/* ============================================
   ChemPretty - Enhanced Style v5.0
   Optimized for UX without changing structure
   ============================================ */

/* ============================================
   PART 1: CSS Variables - Enhanced
   ============================================ */

:root {
    /* Primary Colors */
    --primary: #0066cc;
    --primary-dark: #004d99;
    --primary-light: #3b82f6;
    --primary-50: #e6f2ff;
    --primary-100: #cce5ff;
    --primary-gradient: linear-gradient(135deg, #0066cc 0%, #004d99 100%);
    
    /* Secondary Colors */
    --secondary: #ff6600;
    --secondary-dark: #cc5500;
    --secondary-light: #ff8833;
    --secondary-50: #fff0e6;
    
    /* Semantic Colors */
    --success: #10b981;
    --success-bg: #ecfdf5;
    --warning: #f59e0b;
    --warning-bg: #fffbeb;
    --error: #ef4444;
    --error-bg: #fef2f2;
    --info: #3b82f6;
    --info-bg: #eff6ff;
    
    /* Neutral Colors - Enhanced contrast */
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    
    /* Font Sizes - Fluid */
    --text-xs: clamp(0.75rem, 0.7rem + 0.15vw, 0.813rem);
    --text-sm: clamp(0.875rem, 0.8rem + 0.2vw, 0.938rem);
    --text-base: clamp(1rem, 0.9rem + 0.25vw, 1.063rem);
    --text-lg: clamp(1.125rem, 1rem + 0.35vw, 1.25rem);
    --text-xl: clamp(1.25rem, 1.1rem + 0.45vw, 1.5rem);
    --text-2xl: clamp(1.5rem, 1.3rem + 0.6vw, 1.875rem);
    --text-3xl: clamp(1.875rem, 1.6rem + 0.8vw, 2.25rem);
    --text-4xl: clamp(2.25rem, 1.9rem + 1vw, 3rem);
    --text-5xl: clamp(2.75rem, 2.4rem + 1.5vw, 3.75rem);
    
    /* Font Weights */
    --font-light: 300;
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    --font-extrabold: 800;
    
    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows - Enhanced */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-primary: 0 4px 16px rgba(0, 102, 204, 0.25);
    
    /* Layout */
    --container-max: 1280px;
    --container-padding: clamp(1rem, 3vw, 2.5rem);
    --header-height: 72px;
    --content-max-width: 72ch;
    
    /* Transitions - Smooth */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-Index */
    --z-negative: -1;
    --z-low: 10;
    --z-medium: 100;
    --z-high: 1000;
    --z-modal: 10000;
}

/* ============================================
   PART 2: Reset & Base - Enhanced
   ============================================ */

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
    width: 100%;
}

body {
    font-family: var(--font-family);
    font-size: var(--text-base);
    line-height: 1.7;
    color: var(--gray-700);
    background-color: var(--gray-50);
    overflow-x: hidden;
    width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ============================================
   PART 3: Container - Enhanced
   ============================================ */

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    width: 100%;
    overflow-wrap: break-word;
    word-wrap: break-word;
}

/* ============================================
   PART 4: Typography - Enhanced
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-bold);
    line-height: 1.25;
    color: var(--gray-900);
    letter-spacing: -0.025em;
    overflow-wrap: break-word;
    word-wrap: break-word;
}
h1 { font-size: var(--text-5xl); letter-spacing: -0.04em; }
h2 { font-size: var(--text-3xl); letter-spacing: -0.03em; }
h3 { font-size: var(--text-xl); letter-spacing: -0.02em; }
h4 { font-size: var(--text-lg); letter-spacing: -0.01em; }

p {
    max-width: var(--content-max-width);
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: var(--spacing-4);
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast), border-color var(--transition-fast);
    overflow-wrap: break-word;
    word-wrap: break-word;
}
a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* Text Utilities */
.text-primary { color: var(--primary); }
.text-secondary { color: var(--secondary); }
.text-success { color: var(--success); }
.text-error { color: var(--error); }
.text-warning { color: var(--warning); }
.text-gray-500 { color: var(--gray-500); }
.text-gray-600 { color: var(--gray-600); }
.text-gray-700 { color: var(--gray-700); }

.text-gradient {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* ============================================
   PART 5: Buttons - Enhanced
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    line-height: 1.5;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    text-decoration: none !important;
    min-height: 44px;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
}
.btn:hover {
    text-decoration: none !important;
    transform: translateY(-2px);
}
.btn:active {
    transform: translateY(0px);
}

.btn-primary {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    box-shadow: var(--shadow-primary);
}
.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--secondary);
    color: white;
    border-color: var(--secondary);
}
.btn-secondary:hover {
    background: var(--secondary-dark);
    border-color: var(--secondary-dark);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}
.btn-outline:hover {
    background: var(--primary-50);
    color: var(--primary-dark);
    border-color: var(--primary-dark);
}

.btn-sm {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--text-xs);
    min-height: 36px;
}
.btn-lg {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--text-base);
    min-height: 52px;
}
.btn-block {
    width: 100%;
    justify-content: center;
}

/* ============================================
   PART 6: Header - Enhanced
   ============================================ */

.header {
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: var(--z-high);
    border-bottom: 1px solid var(--gray-200);
    width: 100%;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo {
    font-size: 24px;
    font-weight: var(--font-extrabold);
    color: var(--gray-900);
    text-decoration: none !important;
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}
.logo:hover {
    text-decoration: none !important;
}
.logo .text-primary {
    color: var(--primary);
}

nav a {
    margin-left: 20px;
    text-decoration: none;
    color: var(--gray-600);
    font-weight: var(--font-medium);
    font-size: var(--text-sm);
    transition: color var(--transition-fast);
    padding: var(--spacing-1) 0;
    position: relative;
}
nav a:hover {
    color: var(--primary);
    text-decoration: none;
}
nav a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width var(--transition-fast);
}
nav a:hover::after,
nav a.active::after {
    width: 100%;
}
nav a.active {
    color: var(--primary);
}

@media (max-width: 768px) {
    .header .container {
        flex-direction: row;
        flex-wrap: wrap;
        padding: 12px 16px;
    }
    nav a {
        margin: 0 12px;
        font-size: var(--text-sm);
    }
}

/* ============================================
   PART 7: Hero - Enhanced
   ============================================ */

.hero {
    background: var(--primary-gradient);
    color: white;
    text-align: center;
    padding: clamp(3rem, 8vw, 5rem) 0;
    position: relative;
    overflow: hidden;
    width: 100%;
}
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='rgba(255,255,255,0.06)' d='M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,154.7C960,171,1056,181,1152,165.3C1248,149,1344,107,1392,85.3L1440,64L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z'%3E%3C/path%3E%3C/svg%3E") repeat-x bottom;
    background-size: cover;
    opacity: 0.3;
    pointer-events: none;
}
.hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: 20px;
    color: white;
}
.hero p {
    font-size: clamp(1rem, 1.5vw, 1.25rem);
    margin-bottom: 30px;
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}
.hero form {
    display: flex;
    max-width: 500px;
    margin: 0 auto;
}
.hero input {
    flex: 1;
    padding: 14px 20px;
    border: none;
    border-radius: var(--radius-md) 0 0 var(--radius-md);
    font-size: var(--text-base);
    min-height: 52px;
}
.hero input:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
}
.hero button {
    padding: 14px 30px;
    background: var(--secondary);
    color: white;
    border: none;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    cursor: pointer;
    font-weight: var(--font-semibold);
    font-size: var(--text-base);
    min-height: 52px;
    transition: all var(--transition-fast);
}
.hero button:hover {
    background: var(--secondary-dark);
}

@media (max-width: 640px) {
    .hero form {
        flex-direction: column;
        gap: var(--spacing-3);
        max-width: 100%;
    }
    .hero input {
        border-radius: var(--radius-md);
    }
    .hero button {
        border-radius: var(--radius-md);
    }
}

/* ============================================
   PART 8: Categories - Enhanced
   ============================================ */

.categories {
    padding: clamp(3rem, 6vw, 5rem) 0;
    background: var(--gray-50);
}
.categories h2 {
    text-align: center;
    margin-bottom: 15px;
    font-size: var(--text-3xl);
}
.categories .section-desc {
    text-align: center;
    color: var(--gray-500);
    margin-bottom: 40px;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
    gap: 30px;
}

.category-card {
    background: white;
    padding: 28px 24px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border: 1px solid var(--gray-200);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none !important;
    color: inherit;
}
.category-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
    text-decoration: none !important;
}
.category-card h3 {
    margin-bottom: 10px;
    color: var(--gray-800);
    font-size: var(--text-lg);
}
.category-card p {
    color: var(--gray-500);
    margin-bottom: 15px;
    font-size: var(--text-sm);
    max-width: 100%;
}
.category-card .category-icon {
    font-size: 36px;
    margin-bottom: 15px;
}
.category-card .category-count {
    display: inline-block;
    background: var(--gray-100);
    padding: 4px 14px;
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    color: var(--gray-600);
    font-weight: var(--font-medium);
}
.category-card a {
    color: var(--primary);
    text-decoration: none;
    font-weight: var(--font-medium);
}
.category-card a:hover {
    text-decoration: underline;
}

/* ============================================
   PART 9: Featured Chemicals - Enhanced
   ============================================ */

.featured {
    padding: clamp(3rem, 6vw, 5rem) 0;
    background: white;
}
.featured h2 {
    text-align: center;
    margin-bottom: 15px;
    font-size: var(--text-3xl);
}
.featured .section-desc {
    text-align: center;
    color: var(--gray-500);
    margin-bottom: 40px;
}

.chemicals-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
    gap: 30px;
}

.chemical-card {
    background: white;
    padding: 24px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
}
.chemical-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}
.chemical-card h3 {
    margin-bottom: 8px;
    font-size: var(--text-lg);
}
.chemical-card h3 a {
    color: var(--gray-900);
    text-decoration: none;
}
.chemical-card h3 a:hover {
    color: var(--primary);
    text-decoration: none;
}
.chemical-card .chemical-cas {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--gray-500);
    margin-bottom: 12px;
    cursor: pointer;
    padding: 2px 10px;
    border-radius: var(--radius-sm);
    background: var(--gray-50);
    display: inline-block;
    align-self: flex-start;
    transition: all var(--transition-fast);
}
.chemical-card .chemical-cas:hover {
    background: var(--primary-50);
    color: var(--primary);
}
.chemical-card p {
    color: var(--gray-600);
    margin-bottom: 15px;
    font-size: var(--text-sm);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    max-width: 100%;
}
.chemical-card .chemical-properties {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 15px;
}
.chemical-card .property-tag {
    background: var(--gray-100);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    color: var(--gray-600);
}
.chemical-card .chemical-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: 15px;
    border-top: 1px solid var(--gray-200);
    flex-wrap: wrap;
    gap: 8px;
}
.chemical-card .supplier-count {
    font-size: var(--text-sm);
    color: var(--gray-500);
}
.chemical-card .supplier-count strong {
    color: var(--primary);
}
.chemical-card a.btn {
    flex-shrink: 0;
}

/* ============================================
   PART 10: Footer - Enhanced
   ============================================ */

footer {
    background: var(--gray-900);
    color: var(--gray-400);
    text-align: center;
    padding: clamp(3rem, 5vw, 4rem) 0 var(--spacing-6);
    margin-top: auto;
    width: 100%;
}
footer .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-8);
    text-align: left;
    margin-bottom: var(--spacing-8);
}
footer .footer-brand {
    grid-column: span 1;
}
footer .footer-brand .logo {
    color: white;
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-4);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
}
footer .footer-brand p {
    color: var(--gray-400);
    font-size: var(--text-sm);
    max-width: 280px;
    line-height: 1.7;
}
footer h4 {
    color: white;
    margin-bottom: var(--spacing-4);
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
}
footer ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
footer ul li {
    margin-bottom: var(--spacing-2);
}
footer ul a {
    color: var(--gray-400);
    text-decoration: none;
    font-size: var(--text-sm);
    transition: color var(--transition-fast);
}
footer ul a:hover {
    color: white;
    text-decoration: none;
}
footer .social-links {
    display: flex;
    gap: var(--spacing-3);
    margin-top: var(--spacing-4);
}
footer .social-links a {
    width: 38px;
    height: 38px;
    background: var(--gray-800);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    transition: all var(--transition-fast);
    text-decoration: none;
}
footer .social-links a:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px);
    text-decoration: none;
}
footer .footer-bottom {
    grid-column: 1 / -1;
    text-align: center;
    padding-top: var(--spacing-6);
    border-top: 1px solid var(--gray-800);
    font-size: var(--text-sm);
    margin-bottom: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-4);
}
footer .footer-bottom .footer-links {
    display: flex;
    gap: var(--spacing-4);
}
footer .footer-bottom .footer-links a {
    color: var(--gray-400);
    font-size: var(--text-sm);
    text-decoration: none;
}
footer .footer-bottom .footer-links a:hover {
    color: white;
}

@media (max-width: 768px) {
    footer .container {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-6);
        text-align: center;
    }
    footer .footer-brand {
        grid-column: 1 / -1;
        text-align: center;
    }
    footer .footer-brand p {
        margin-left: auto;
        margin-right: auto;
    }
    footer .social-links {
        justify-content: center;
    }
    footer .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-3);
    }
}
@media (max-width: 480px) {
    footer .container {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   PART 11: Responsive - Enhanced
   ============================================ */

@media (max-width: 768px) {
    .hero h1 {
        font-size: var(--text-3xl);
    }
    .hero p {
        font-size: var(--text-base);
    }
    .categories-grid,
    .chemicals-grid {
        grid-template-columns: 1fr;
    }
    .container {
        padding: 0 16px;
    }
    .header .container {
        padding: 12px 16px;
    }
    .chemical-card {
        padding: 20px;
    }
    .category-card {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: var(--text-2xl);
    }
    .hero {
        padding: 40px 0;
    }
    .categories,
    .featured {
        padding: 40px 0;
    }
    h2 {
        font-size: var(--text-2xl);
    }
    .btn {
        padding: var(--spacing-2) var(--spacing-4);
        font-size: var(--text-xs);
        min-height: 38px;
    }
    .btn-lg {
        padding: var(--spacing-3) var(--spacing-5);
        min-height: 46px;
    }
    nav a {
        margin: 0 8px;
        font-size: var(--text-xs);
    }
}

/* ============================================
   PART 12: Print Styles
   ============================================ */

@media print {
    .header,
    footer,
    .back-to-top,
    .nav-actions {
        display: none !important;
    }
    body {
        background: white;
        color: black;
        font-size: 12pt;
    }
    .container {
        max-width: 100%;
        padding: 0;
    }
    a {
        text-decoration: underline;
    }
    .chemical-card,
    .category-card {
        border: 1px solid #ccc !important;
        box-shadow: none !important;
        transform: none !important;
        page-break-inside: avoid;
    }
    .hero {
        background: #0066cc !important;
        padding: 30px 0 !important;
        color: white !important;
    }
    .hero h1 {
        color: white !important;
    }
}

/* ============================================
   PART 13: Utility Classes - Added
   ============================================ */

/* Spacing */
.mt-1 { margin-top: var(--spacing-1); }
.mt-2 { margin-top: var(--spacing-2); }
.mt-3 { margin-top: var(--spacing-3); }
.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }
.mt-8 { margin-top: var(--spacing-8); }
.mt-12 { margin-top: var(--spacing-12); }

.mb-1 { margin-bottom: var(--spacing-1); }
.mb-2 { margin-bottom: var(--spacing-2); }
.mb-3 { margin-bottom: var(--spacing-3); }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mb-8 { margin-bottom: var(--spacing-8); }
.mb-12 { margin-bottom: var(--spacing-12); }

.mx-auto { margin-left: auto; margin-right: auto; }
.ml-auto { margin-left: auto; }
.mr-auto { margin-right: auto; }

.p-4 { padding: var(--spacing-4); }
.p-6 { padding: var(--spacing-6); }
.p-8 { padding: var(--spacing-8); }

/* Flex */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-2 { gap: var(--spacing-2); }
.gap-3 { gap: var(--spacing-3); }
.gap-4 { gap: var(--spacing-4); }
.gap-6 { gap: var(--spacing-6); }

/* Grid */
.grid { display: grid; }
.grid-2 { grid-template-columns: 1fr 1fr; gap: var(--spacing-4); }
@media (max-width: 640px) {
    .grid-2 { grid-template-columns: 1fr; }
}

/* Display */
.block { display: block; }
.hidden { display: none; }
@media (max-width: 768px) {
    .hidden-mobile { display: none; }
}
@media (min-width: 769px) {
    .hidden-desktop { display: none; }
}

/* Width */
.w-full { width: 100%; }
.max-w-full { max-width: 100%; }

/* Border Radius */
.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

/* Shadows */
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* Selection */
::selection {
    background: var(--primary-50);
    color: var(--primary-dark);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--gray-100);
    border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ============================================
   PART 14: Toast Notifications
   ============================================ */

.toast-container {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    z-index: var(--z-modal);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
    align-items: center;
    pointer-events: none;
    max-width: 90%;
}

.toast {
    pointer-events: auto;
    padding: 12px 24px;
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    box-shadow: var(--shadow-lg);
    animation: toastSlideUp 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    color: white;
    min-width: 200px;
    max-width: 100%;
    text-align: center;
}
.toast-success { background: var(--success); }
.toast-error { background: var(--error); }
.toast-info { background: var(--primary); }
.toast-warning { background: var(--warning); }

@keyframes toastSlideUp {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.toast-close {
    background: none;
    border: none;
    color: rgba(255,255,255,0.7);
    cursor: pointer;
    padding: 0 4px;
    font-size: var(--text-base);
    margin-left: var(--spacing-2);
}
.toast-close:hover {
    color: white;
}

/* ============================================
   PART 15: Page Header (for inner pages)
   ============================================ */

.page-header {
    background: var(--primary-gradient);
    padding: clamp(2rem, 4vw, 3.5rem) 0;
    color: white;
    width: 100%;
}
.page-header h1 {
    color: white;
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--spacing-2);
}
.page-header p {
    color: rgba(255, 255, 255, 0.85);
    max-width: 600px;
    margin-bottom: 0;
    font-size: var(--text-lg);
}
.page-header .breadcrumb {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--text-sm);
    margin-bottom: var(--spacing-4);
}
.page-header .breadcrumb a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
}
.page-header .breadcrumb a:hover {
    color: white;
    text-decoration: none;
}
.page-header .breadcrumb .separator {
    margin: 0 var(--spacing-2);
    color: rgba(255, 255, 255, 0.4);
}

/* ============================================
   PART 16: Pagination
   ============================================ */

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-2);
    flex-wrap: wrap;
    margin-top: var(--spacing-8);
}
.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--spacing-3);
    background: white;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--gray-700);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    transition: all var(--transition-fast);
}
.pagination a:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-50);
    text-decoration: none;
}
.pagination .active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}
.pagination .disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}
.pagination .dots {
    border: none;
    background: transparent;
    color: var(--gray-400);
    min-width: 30px;
}

/* ============================================
   PART 17: Alert Messages
   ============================================ */

.alert {
    padding: var(--spacing-4) var(--spacing-6);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-4);
    border-left: 4px solid transparent;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
}
.alert-success {
    background: var(--success-bg);
    border-color: var(--success);
    color: #065f46;
}
.alert-error {
    background: var(--error-bg);
    border-color: var(--error);
    color: #991b1b;
}
.alert-warning {
    background: var(--warning-bg);
    border-color: var(--warning);
    color: #92400e;
}
.alert-info {
    background: var(--info-bg);
    border-color: var(--info);
    color: #1e40af;
}
.alert i {
    flex-shrink: 0;
    margin-top: 2px;
}

/* ============================================
   PART 18: Form Enhancements
   ============================================ */

input, textarea, select {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: var(--text-base);
    font-family: var(--font-family);
    transition: all var(--transition-fast);
    background: white;
    color: var(--gray-800);
    min-height: 48px;
}
input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(0, 102, 204, 0.1);
}
input.error, textarea.error {
    border-color: var(--error);
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.1);
}
textarea {
    min-height: 120px;
    resize: vertical;
}
label {
    font-weight: var(--font-semibold);
    font-size: var(--text-sm);
    color: var(--gray-700);
    margin-bottom: var(--spacing-1);
    display: block;
}
label .required {
    color: var(--error);
    margin-left: 2px;
}
.form-group {
    margin-bottom: var(--spacing-4);
}
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4);
}
@media (max-width: 640px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}
/* ============================================
   FIX: Missing main flex and mobile nav
   Add this to the END of style.css
   ============================================ */

/* Fix: Ensure footer stays at bottom when content is short */
main {
    flex: 1;
}

/* Mobile Navigation */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--gray-700);
    cursor: pointer;
    padding: 0.5rem;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }
    .main-nav {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(12px);
        flex-direction: column;
        padding: 1rem;
        box-shadow: var(--shadow-lg);
        border-top: 1px solid var(--gray-200);
        z-index: var(--z-high);
    }
    .main-nav.active {
        display: flex;
    }
    .main-nav a {
        margin: 0;
        padding: 0.75rem 1rem;
        border-radius: var(--radius-md);
        font-size: var(--text-base);
    }
    .main-nav a:hover,
    .main-nav a.active {
        background: var(--gray-50);
    }
    .main-nav a::after {
        display: none;
    }
}

/* Utility: Hide on desktop */
@media (min-width: 769px) {
    .hidden-desktop {
        display: none !important;
    }
}
/* ============================================
   Suppliers Page Styles
   ============================================ */

/* Verified status badge in page header */
.verified-status {
    display: inline-block;
    margin-top: var(--spacing-4);
    background: rgba(16, 185, 129, 0.15);
    padding: var(--spacing-1) var(--spacing-4);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    color: var(--success);
    font-weight: var(--font-medium);
}

.verified-status i {
    margin-right: var(--spacing-1);
}

/* Suppliers Grid */
.suppliers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
    gap: 30px;
    margin-bottom: var(--spacing-8);
}

/* Supplier Card */
.supplier-card {
    background: white;
    padding: 24px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
}

.supplier-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.supplier-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-4);
}

.supplier-name {
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    color: var(--gray-900);
    line-height: 1.3;
}

.supplier-company {
    font-size: var(--text-sm);
    color: var(--gray-500);
    margin-top: var(--spacing-1);
}

.verified-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
    background: var(--success-bg);
    color: var(--success);
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    flex-shrink: 0;
}

.supplier-address {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-2);
    font-size: var(--text-sm);
    color: var(--gray-600);
    margin-bottom: var(--spacing-4);
    line-height: 1.5;
}

.supplier-address i {
    color: var(--primary);
    margin-top: 2px;
    flex-shrink: 0;
}

.supplier-description {
    color: var(--gray-600);
    font-size: var(--text-sm);
    margin-bottom: var(--spacing-4);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.supplier-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-4);
}

.supplier-highlights .highlight {
    background: var(--gray-100);
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    color: var(--gray-600);
    font-weight: var(--font-medium);
}

.supplier-actions {
    display: flex;
    gap: var(--spacing-3);
    margin-top: auto;
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--gray-200);
    flex-wrap: wrap;
}

.supplier-actions .btn {
    flex: 1;
    min-width: 120px;
    justify-content: center;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-12) var(--spacing-6);
    background: white;
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
}

.empty-state .empty-icon {
    font-size: 48px;
    color: var(--gray-300);
    margin-bottom: var(--spacing-4);
    display: block;
}

.empty-state h3 {
    margin-bottom: var(--spacing-2);
    color: var(--gray-800);
}

.empty-state p {
    color: var(--gray-500);
    margin-bottom: 0;
}

/* Responsive */
@media (max-width: 768px) {
    .suppliers-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .supplier-actions {
        flex-direction: column;
    }
    .supplier-actions .btn {
        width: 100%;
    }
}
/* ============================================
   Supplier Detail Page Styles
   ============================================ */

/* Detail Page Header Overrides */
.supplier-detail-header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-4);
    margin-top: var(--spacing-2);
}

.supplier-detail-title {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-2);
}

.supplier-detail-title h1 {
    color: #fff;
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin: 0;
}

.detail-verified {
    background: rgba(16, 185, 129, 0.2) !important;
    color: #10b981 !important;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.supplier-detail-company {
    font-size: var(--text-lg);
    color: rgba(255, 255, 255, 0.9);
}

.supplier-detail-actions {
    display: flex;
    gap: var(--spacing-3);
    flex-wrap: wrap;
}

.btn-light {
    background: #fff;
    color: var(--primary);
    border-color: #fff;
}

.btn-light:hover {
    background: var(--gray-100);
    border-color: var(--gray-100);
    color: var(--primary-dark);
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    color: #fff;
}

.supplier-detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-6);
    margin-top: var(--spacing-4);
}

.supplier-detail-meta span {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--text-sm);
}

.supplier-detail-meta i {
    color: rgba(255, 255, 255, 0.6);
}

/* Detail Section */
.detail-section {
    padding: var(--spacing-8) 0;
    background: var(--gray-50);
}

/* Two Column Layout */
.detail-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: var(--spacing-8);
    align-items: start;
}

/* Info Cards */
.info-card {
    background: white;
    padding: var(--spacing-6);
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
    margin-bottom: var(--spacing-6);
    box-shadow: var(--shadow-sm);
}

.info-card:last-child {
    margin-bottom: 0;
}

.info-card h2 {
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-4);
    color: var(--gray-900);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    flex-wrap: wrap;
}

.info-card h2 i {
    color: var(--primary);
}

.info-card-body {
    line-height: 1.8;
    color: var(--gray-600);
}

.info-card-body p {
    margin-bottom: var(--spacing-3);
}

.info-card-body p:last-child {
    margin-bottom: 0;
}

/* Certifications */
.cert-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.cert-tag {
    background: var(--success-bg);
    color: var(--success);
    padding: var(--spacing-1) var(--spacing-4);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
}

.cert-tag i {
    font-size: 0.875em;
}

/* Badge */
.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 2px 10px;
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: var(--font-bold);
    min-width: 24px;
    height: 24px;
    line-height: 1;
}

.badge-primary {
    background: var(--primary);
    color: white;
}

/* Products Grid in Detail */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr));
    gap: var(--spacing-4);
}

.product-link-card {
    display: flex;
    flex-direction: column;
    padding: var(--spacing-4);
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}

.product-link-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    background: white;
}

.product-link-name {
    font-weight: var(--font-semibold);
    color: var(--gray-800);
    margin-bottom: var(--spacing-1);
}

.product-link-cas {
    font-size: var(--text-xs);
    color: var(--gray-500);
    font-family: var(--font-mono);
}

.product-link-moq {
    font-size: var(--text-xs);
    color: var(--gray-500);
    margin-top: var(--spacing-1);
}

/* Sidebar */
.supplier-sidebar {
    position: sticky;
    top: calc(var(--header-height) + var(--spacing-4));
}

.sidebar-widget {
    background: white;
    padding: var(--spacing-6);
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
    margin-bottom: var(--spacing-6);
    box-shadow: var(--shadow-sm);
}

.sidebar-widget:last-child {
    margin-bottom: 0;
}

.sidebar-widget h3 {
    font-size: var(--text-base);
    margin-bottom: var(--spacing-4);
    color: var(--gray-900);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.sidebar-widget h3 i {
    color: var(--primary);
}

/* Contact Info */
.contact-info p {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-3);
    color: var(--gray-600);
    font-size: var(--text-sm);
    line-height: 1.5;
}

.contact-info p:last-child {
    margin-bottom: 0;
}

.contact-info i {
    color: var(--primary);
    margin-top: 2px;
    width: 16px;
    flex-shrink: 0;
}

.contact-info a {
    color: var(--primary);
    text-decoration: none;
    word-break: break-all;
}

.contact-info a:hover {
    text-decoration: underline;
}

/* Inquiry Form */
.inquiry-form .form-group {
    margin-bottom: var(--spacing-3);
}

.inquiry-form .form-group:last-child {
    margin-bottom: 0;
}

.inquiry-form input,
.inquiry-form select,
.inquiry-form textarea {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-family: var(--font-family);
    transition: all var(--transition-fast);
    background: white;
    color: var(--gray-800);
    min-height: 44px;
}

.inquiry-form input:focus,
.inquiry-form select:focus,
.inquiry-form textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(0, 102, 204, 0.1);
}

.inquiry-form textarea {
    min-height: 100px;
    resize: vertical;
}

.inquiry-form select {
    cursor: pointer;
}

.inquiry-form .btn-block {
    margin-top: var(--spacing-2);
}

/* Responsive */
@media (max-width: 768px) {
    .detail-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-6);
    }
    
    .supplier-sidebar {
        position: static;
        order: -1;
    }
    
    .supplier-detail-header {
        flex-direction: column;
    }
    
    .supplier-detail-actions {
        width: 100%;
    }
    
    .supplier-detail-actions .btn {
        flex: 1;
        justify-content: center;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .info-card {
        padding: var(--spacing-4);
    }
}
/* ============================================
   Home Page Specific Styles
   ============================================ */

/* Hero Tags */
.hero-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    align-items: center;
}

.hero-tags span {
    margin-right: 4px;
}

.hero-tag {
    color: rgba(255, 255, 255, 0.9);
    background: rgba(255, 255, 255, 0.1);
    padding: 4px 14px;
    border-radius: 20px;
    text-decoration: none;
    font-size: 14px;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}

.hero-tag:hover {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
    text-decoration: none;
    border-color: rgba(255, 255, 255, 0.3);
}

/* Empty Message (used in grids) */
.empty-message {
    text-align: center;
    grid-column: 1 / -1;
    color: var(--gray-400);
    padding: var(--spacing-8) 0;
}

/* Top Suppliers Section */
.top-suppliers {
    padding: clamp(3rem, 6vw, 5rem) 0;
    background: var(--gray-50);
}

.top-suppliers h2 {
    text-align: center;
    margin-bottom: 15px;
    font-size: var(--text-3xl);
}

.top-suppliers .section-desc {
    text-align: center;
    color: var(--gray-500);
    margin-bottom: 40px;
}

/* CTA Section */
.cta-section {
    background: var(--primary-gradient);
    padding: clamp(3rem, 6vw, 5rem) 0;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='rgba(255,255,255,0.06)' d='M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,154.7C960,171,1056,181,1152,165.3C1248,149,1344,107,1392,85.3L1440,64L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z'%3E%3C/path%3E%3C/svg%3E") repeat-x bottom;
    background-size: cover;
    opacity: 0.3;
    pointer-events: none;
}

.cta-section h2 {
    color: #fff;
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: 15px;
    position: relative;
    z-index: 1;
}

.cta-section p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
    z-index: 1;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

/* Button variants for CTA */
.btn-light {
    background: #fff;
    color: var(--primary);
    border-color: #fff;
}

.btn-light:hover {
    background: var(--gray-100);
    border-color: var(--gray-100);
    color: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    color: #fff;
    transform: translateY(-2px);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .hero-tags {
        font-size: 13px;
    }
    .hero-tag {
        padding: 3px 10px;
    }
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    .cta-buttons .btn {
        width: 100%;
        max-width: 280px;
    }
}
/* ============================================
   Category Detail Page Styles
   ============================================ */

/* Category stats in page header */
.category-meta {
    display: flex;
    gap: var(--spacing-4);
    margin-top: var(--spacing-4);
    flex-wrap: wrap;
}

.category-stat {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    background: rgba(255, 255, 255, 0.15);
    padding: var(--spacing-1) var(--spacing-4);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.9);
}

.category-stat i {
    color: rgba(255, 255, 255, 0.7);
}

/* Empty state with CTA button */
.empty-state .btn {
    margin-top: var(--spacing-4);
}
/* ============================================
   Chemicals List Page Styles
   ============================================ */

/* Filter Bar */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 30px;
    padding: 16px;
    background: white;
    border-radius: 12px;
    border: 1px solid var(--gray-200);
}

.filter-chip {
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    border-radius: 20px;
    background: var(--gray-100);
    color: var(--gray-600);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}

.filter-chip:hover {
    background: var(--primary-50);
    color: var(--primary);
    text-decoration: none;
    border-color: var(--primary-100);
}

.filter-chip.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.filter-chip.active:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: white;
}

/* View count in chemical footer */
.view-count {
    font-size: 14px;
    color: var(--gray-500);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
}

.view-count i {
    color: var(--gray-400);
    font-size: 12px;
}
/* ============================================
   Chemical Detail Page Styles
   ============================================ */

/* Chemical Detail Header */
.chemical-detail-header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-4);
    margin-top: var(--spacing-2);
}

.chemical-detail-header h1 {
    color: #fff;
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--spacing-2);
}

.chemical-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
}

.chemical-meta strong {
    color: rgba(255, 255, 255, 0.95);
}

.chemical-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    margin-top: var(--spacing-3);
}

.chemical-tags span {
    background: rgba(255, 255, 255, 0.15);
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-full);
    font-size: 12px;
    color: rgba(255, 255, 255, 0.9);
}

.chemical-detail-actions {
    display: flex;
    gap: var(--spacing-3);
    flex-wrap: wrap;
}

.btn-copy-cas {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-family: var(--font-family);
    font-size: 14px;
    font-weight: var(--font-medium);
    transition: all var(--transition-fast);
    min-height: 44px;
}

.btn-copy-cas:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

/* Property List */
.property-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.property-badge {
    background: var(--primary-50);
    color: var(--primary);
    padding: var(--spacing-1) var(--spacing-4);
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: var(--font-medium);
}

/* Supplier Offer Cards */
.supplier-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.supplier-offer-card {
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-4);
    transition: all var(--transition-base);
}

.supplier-offer-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.supplier-offer-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-3);
}

.supplier-offer-header h3 {
    font-size: var(--text-base);
    margin-bottom: var(--spacing-1);
    color: var(--gray-900);
}

.supplier-offer-company {
    font-size: 14px;
    color: var(--gray-500);
}

.supplier-offer-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
    gap: var(--spacing-2);
    margin: var(--spacing-3) 0;
}

.stat-box {
    background: var(--gray-100);
    padding: var(--spacing-2);
    border-radius: var(--radius-md);
    text-align: center;
}

.stat-box.stat-price {
    background: var(--primary-50);
}

.stat-label {
    font-size: 11px;
    color: var(--gray-500);
    margin-bottom: var(--spacing-1);
}

.stat-value {
    font-weight: var(--font-bold);
    font-size: 13px;
    color: var(--gray-800);
}

.stat-price .stat-value {
    color: var(--primary);
}

.supplier-offer-actions {
    display: flex;
    gap: var(--spacing-3);
    flex-wrap: wrap;
}

/* RFQ CTA Card */
.rfq-cta-card {
    background: linear-gradient(135deg, var(--primary-50), var(--primary-100));
    border-radius: var(--radius-xl);
    padding: var(--spacing-6);
    border: 1px solid var(--primary);
    margin-bottom: var(--spacing-6);
    text-align: center;
}

.rfq-cta-card i {
    font-size: 48px;
    color: var(--primary);
    margin-bottom: var(--spacing-3);
    display: block;
}

.rfq-cta-card h3 {
    color: var(--primary);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-2);
}

.rfq-cta-card p {
    font-size: 14px;
    color: var(--gray-600);
    margin-bottom: var(--spacing-4);
}

/* Quick Info */
.quick-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.quick-info > div {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    padding: var(--spacing-2) 0;
    border-bottom: 1px solid var(--gray-100);
}

.quick-info > div:last-child {
    border-bottom: none;
}

.quick-info span {
    color: var(--gray-500);
}

.quick-info strong {
    font-weight: var(--font-medium);
    color: var(--gray-800);
}

/* RFQ Form Card */
.rfq-form-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: clamp(24px, 4vw, 32px);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
    margin-top: var(--spacing-8);
}

.rfq-form-card h2 {
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-2);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.rfq-form-card h2 i {
    color: var(--primary);
}

.rfq-subtitle {
    color: var(--gray-500);
    margin-bottom: var(--spacing-6);
}

.rfq-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4);
}

.rfq-form .form-group {
    margin-bottom: 0;
}

.rfq-form .form-group:last-child {
    margin-bottom: 0;
}

.rfq-form label {
    font-weight: var(--font-semibold);
    font-size: 14px;
    display: block;
    margin-bottom: var(--spacing-1);
}

.rfq-form label .required {
    color: var(--error);
}

.rfq-form input,
.rfq-form select,
.rfq-form textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 14px;
    font-family: var(--font-family);
    transition: all var(--transition-fast);
    background: white;
    color: var(--gray-800);
    min-height: 44px;
}

.rfq-form input:focus,
.rfq-form select:focus,
.rfq-form textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(0, 102, 204, 0.1);
}

.rfq-form textarea {
    min-height: 100px;
    resize: vertical;
}

.rfq-form select {
    cursor: pointer;
}

.rfq-form .btn-block {
    margin-top: var(--spacing-4);
}

/* Responsive */
@media (max-width: 768px) {
    .chemical-detail-header {
        flex-direction: column;
    }
    
    .chemical-detail-actions {
        width: 100%;
    }
    
    .chemical-detail-actions .btn,
    .chemical-detail-actions .btn-copy-cas {
        flex: 1;
        justify-content: center;
    }
    
    .chemical-meta {
        gap: var(--spacing-2);
    }
    
    .rfq-form .form-row {
        grid-template-columns: 1fr;
    }
    
    .supplier-offer-actions {
        flex-direction: column;
    }
    
    .supplier-offer-actions .btn {
        width: 100%;
        justify-content: center;
    }
}
/* ============================================
   Insights / Blog Page Styles
   ============================================ */

/* Featured Insight */
.insight-featured {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: var(--radius-xl);
    overflow: hidden;
    margin-bottom: var(--spacing-8);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    align-items: stretch;
}

.insight-featured-content {
    padding: var(--spacing-8);
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.insight-category {
    display: inline-block;
    background: rgba(255, 255, 255, 0.15);
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    margin-bottom: var(--spacing-3);
    align-self: flex-start;
}

.insight-featured-content h2 {
    color: #fff;
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    margin-bottom: var(--spacing-3);
}

.insight-featured-content p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-4);
}

.insight-meta {
    display: flex;
    gap: var(--spacing-4);
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-4);
}

.insight-meta i {
    margin-right: var(--spacing-1);
}

.insight-featured-image {
    background: rgba(0, 0, 0, 0.1);
    min-height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 72px;
    color: rgba(255, 255, 255, 0.2);
}

/* Insights Grid */
.insights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr));
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-8);
}

/* Insight Card */
.insight-card {
    background: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--gray-200);
    text-decoration: none;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.insight-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
    text-decoration: none;
}

.insight-card-image {
    background: var(--primary-50);
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    color: var(--primary);
}

.insight-card-body {
    padding: var(--spacing-6);
    display: flex;
    flex-direction: column;
    flex: 1;
}

.insight-card-category {
    display: inline-block;
    background: var(--primary-50);
    color: var(--primary);
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    margin-bottom: var(--spacing-3);
    align-self: flex-start;
}

.insight-card-body h3 {
    font-size: var(--text-lg);
    color: var(--gray-800);
    margin-bottom: var(--spacing-2);
    line-height: 1.4;
}

.insight-card-body p {
    color: var(--gray-500);
    font-size: var(--text-sm);
    margin: 0;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.insight-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--gray-200);
    font-size: var(--text-xs);
    color: var(--gray-400);
}

.insight-card-footer span:last-child {
    color: var(--primary);
    font-weight: var(--font-medium);
}

/* Newsletter Section */
.newsletter-section {
    margin-top: var(--spacing-8);
    background: var(--primary-50);
    padding: var(--spacing-8);
    border-radius: var(--radius-xl);
    text-align: center;
}

.newsletter-section h3 {
    margin-bottom: var(--spacing-2);
    font-size: var(--text-xl);
    color: var(--gray-900);
}

.newsletter-section p {
    color: var(--gray-600);
    margin-bottom: var(--spacing-4);
}

.newsletter-form {
    display: flex;
    gap: var(--spacing-3);
    max-width: 500px;
    margin: 0 auto;
    flex-wrap: wrap;
}

.newsletter-form input {
    flex: 1;
    min-width: 200px;
    padding: var(--spacing-3) var(--spacing-4);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: var(--text-base);
    font-family: var(--font-family);
    transition: all var(--transition-fast);
    background: white;
    color: var(--gray-800);
    min-height: 48px;
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(0, 102, 204, 0.1);
}

.newsletter-form .btn {
    flex-shrink: 0;
}

/* Responsive */
@media (max-width: 768px) {
    .insight-featured {
        grid-template-columns: 1fr;
    }
    
    .insight-featured-image {
        min-height: 160px;
        order: -1;
    }
    
    .insight-featured-content {
        padding: var(--spacing-6);
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .newsletter-form input {
        width: 100%;
    }
    
    .newsletter-form .btn {
        width: 100%;
        justify-content: center;
    }
}
/* ============================================
   Article / Insight Detail Page Styles
   ============================================ */

/* Article Section */
.article-section {
    padding: var(--spacing-8) 0;
    background: var(--gray-50);
}

.article-layout {
    max-width: 900px;
    margin: 0 auto;
}

/* Article Header */
.article-header {
    margin-bottom: var(--spacing-6);
}

.article-category {
    display: inline-block;
    padding: var(--spacing-1) var(--spacing-4);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    margin-bottom: var(--spacing-4);
}

.category-insights {
    background: var(--primary-50);
    color: var(--primary);
}

.category-blog {
    background: var(--success-bg);
    color: var(--success);
}

.article-meta {
    display: flex;
    gap: var(--spacing-6);
    color: var(--gray-500);
    font-size: var(--text-sm);
    flex-wrap: wrap;
}

.article-meta i {
    margin-right: var(--spacing-1);
    color: var(--gray-400);
}

/* Article Image */
.article-image {
    margin-bottom: var(--spacing-8);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.article-image img {
    width: 100%;
    display: block;
    border-radius: var(--radius-xl);
}

.article-image-placeholder {
    background: var(--primary-gradient);
    height: 200px;
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-8);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 48px;
}

/* Article Content */
.article-content {
    font-size: var(--text-base);
    line-height: 1.8;
    color: var(--gray-700);
    margin-bottom: var(--spacing-8);
}

.article-content h2,
.article-content h3,
.article-content h4 {
    color: var(--gray-900);
    margin-top: var(--spacing-8);
    margin-bottom: var(--spacing-4);
}

.article-content p {
    margin-bottom: var(--spacing-4);
    max-width: none;
}

.article-content ul,
.article-content ol {
    margin-bottom: var(--spacing-4);
    padding-left: var(--spacing-6);
}

.article-content li {
    margin-bottom: var(--spacing-2);
}

.article-content img {
    max-width: 100%;
    border-radius: var(--radius-lg);
    margin: var(--spacing-4) 0;
}

.article-content blockquote {
    border-left: 4px solid var(--primary);
    padding-left: var(--spacing-4);
    margin: var(--spacing-6) 0;
    color: var(--gray-600);
    font-style: italic;
}

.article-content a {
    color: var(--primary);
    text-decoration: underline;
}

.article-content a:hover {
    color: var(--primary-dark);
}

/* Article Tags */
.article-tags {
    margin-bottom: var(--spacing-8);
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.article-tags .tag {
    background: var(--gray-100);
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    color: var(--gray-600);
    font-weight: var(--font-medium);
}

/* Article Share */
.article-share {
    border-top: 1px solid var(--gray-200);
    border-bottom: 1px solid var(--gray-200);
    padding: var(--spacing-5) 0;
    margin-bottom: var(--spacing-8);
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    flex-wrap: wrap;
}

.article-share span {
    font-weight: var(--font-bold);
    color: var(--gray-800);
}

.article-share a {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    text-decoration: none;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    transition: opacity var(--transition-fast);
}

.article-share a:hover {
    opacity: 0.8;
    text-decoration: none;
}

.share-facebook { color: #1877f2; }
.share-linkedin { color: #0a66c2; }
.share-twitter { color: #1da1f2; }
.share-whatsapp { color: #25d366; }

/* Related Articles */
.related-articles {
    margin-bottom: var(--spacing-8);
}

.related-articles h3 {
    margin-bottom: var(--spacing-5);
    font-size: var(--text-xl);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 250px), 1fr));
    gap: var(--spacing-5);
}

.related-card {
    background: white;
    padding: var(--spacing-4);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.related-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    text-decoration: none;
}

.related-card h4 {
    margin-bottom: var(--spacing-2);
    color: var(--gray-800);
    font-size: var(--text-base);
    line-height: 1.4;
}

.related-card p {
    font-size: var(--text-xs);
    color: var(--gray-500);
    margin: 0;
}

/* Back Button */
.article-back {
    text-align: center;
}

/* Responsive */
@media (max-width: 768px) {
    .article-section {
        padding: var(--spacing-6) 0;
    }
    
    .article-meta {
        gap: var(--spacing-3);
    }
    
    .article-share {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .related-grid {
        grid-template-columns: 1fr;
    }
}
/* ============================================
   Search Page Styles
   ============================================ */

/* Search Header Content */
.search-header-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.search-header-content h1 {
    color: #fff;
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    margin-bottom: var(--spacing-2);
}

.search-count {
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: var(--spacing-6);
}

.search-count strong {
    color: #fff;
}

/* Inline Search Form */
.search-form-inline {
    max-width: 600px;
    margin: 0 auto;
}

.search-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 16px;
    color: var(--gray-400);
    font-size: 16px;
    pointer-events: none;
}

.search-input {
    flex: 1;
    padding: 14px 20px 14px 44px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md) 0 0 var(--radius-md);
    font-size: var(--text-base);
    font-family: var(--font-family);
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    min-height: 52px;
    transition: all var(--transition-fast);
}

.search-input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.search-input:focus {
    outline: none;
    border-color: rgba(255, 255, 255, 0.5);
    background: rgba(255, 255, 255, 0.2);
}

.search-btn {
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    padding: 14px 24px;
    min-height: 52px;
}

/* Search Results */
.search-results {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-8);
}

.search-result-card {
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    padding: var(--spacing-6);
    transition: all var(--transition-fast);
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-4);
}

.search-result-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.search-result-main {
    flex: 1;
    min-width: 0;
}

.search-result-main h3 {
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-1);
}

.search-result-main h3 a {
    color: var(--gray-900);
    text-decoration: none;
}

.search-result-main h3 a:hover {
    color: var(--primary);
    text-decoration: none;
}

.search-result-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
    font-size: var(--text-sm);
    color: var(--gray-500);
    margin-bottom: var(--spacing-2);
}

.search-result-meta strong {
    color: var(--gray-700);
}

.search-result-main p {
    color: var(--gray-600);
    font-size: var(--text-sm);
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.search-result-card .btn {
    flex-shrink: 0;
}

/* Popular Searches */
.popular-searches {
    margin-top: var(--spacing-8);
    padding: var(--spacing-6);
    background: white;
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
}

.popular-searches h3 {
    font-size: var(--text-base);
    margin-bottom: var(--spacing-4);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.popular-searches h3 i {
    color: var(--warning);
}

.popular-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.popular-tag {
    background: var(--gray-100);
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    text-decoration: none;
    color: var(--gray-700);
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
}

.popular-tag:hover {
    background: var(--primary);
    color: #fff;
    text-decoration: none;
}

.popular-tag span {
    color: var(--gray-400);
    font-size: var(--text-xs);
}

.popular-tag:hover span {
    color: rgba(255, 255, 255, 0.8);
}

/* Pagination dots */
.pagination .dots {
    border: none;
    background: transparent;
    color: var(--gray-400);
    min-width: 30px;
    cursor: default;
}

/* Responsive */
@media (max-width: 768px) {
    .search-wrapper {
        flex-direction: column;
    }
    
    .search-input {
        border-radius: var(--radius-md);
        margin-bottom: var(--spacing-2);
    }
    
    .search-btn {
        border-radius: var(--radius-md);
        width: 100%;
    }
    
    .search-result-card {
        flex-direction: column;
    }
    
    .search-result-card .btn {
        width: 100%;
        justify-content: center;
    }
}
/* ============================================
   Contact Page Styles
   ============================================ */

/* Contact Section */
.contact-section {
    padding: var(--spacing-8) 0;
    background: var(--gray-50);
}

.contact-container {
    max-width: 1100px;
}

/* Contact Layout */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-8);
}

/* Contact Form Card */
.contact-form-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-6);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
}

.contact-form-card h2 {
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-4);
}

.contact-form-card .form-group {
    margin-bottom: var(--spacing-4);
}

.contact-form-card .form-group:last-of-type {
    margin-bottom: var(--spacing-5);
}

/* Error List */
.error-list {
    margin-top: var(--spacing-2);
    margin-left: var(--spacing-6);
}

.error-list li {
    margin-bottom: var(--spacing-1);
}

/* Contact Info Column */
.contact-info-column {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
}

/* Contact Info Card */
.contact-info-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-6);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
}

.contact-info-card h2 {
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-4);
}

/* Contact Info List */
.contact-info-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

/* Contact Info Item */
.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
}

.contact-info-icon {
    width: 40px;
    height: 40px;
    background: var(--primary-50);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    flex-shrink: 0;
}

.contact-info-item h4 {
    font-size: var(--text-sm);
    color: var(--gray-800);
    margin-bottom: var(--spacing-1);
    font-weight: var(--font-semibold);
}

.contact-info-item p {
    font-size: var(--text-sm);
    color: var(--gray-500);
    margin: 0;
}

.contact-info-item a {
    color: var(--primary);
    text-decoration: none;
}

.contact-info-item a:hover {
    text-decoration: underline;
}

/* Social Card */
.social-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-6);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
}

.social-card h3 {
    font-size: var(--text-base);
    margin-bottom: var(--spacing-4);
}

.social-links-row {
    display: flex;
    gap: var(--spacing-3);
}

.social-link {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-size: var(--text-lg);
    color: white;
    transition: all var(--transition-fast);
}

.social-link:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    text-decoration: none;
    color: white;
}

.social-link.facebook { background: #1877f2; }
.social-link.linkedin { background: #0a66c2; }
.social-link.telegram { background: #0088cc; }
.social-link.whatsapp { background: #25d366; }

/* FAQ CTA */
.faq-cta {
    margin-top: var(--spacing-8);
    text-align: center;
    padding: var(--spacing-6);
    background: var(--primary-50);
    border-radius: var(--radius-xl);
}

.faq-cta h3 {
    font-size: var(--text-base);
    margin-bottom: var(--spacing-2);
}

.faq-cta p {
    color: var(--gray-500);
    margin-bottom: var(--spacing-4);
}

/* Responsive */
@media (max-width: 768px) {
    .contact-layout {
        grid-template-columns: 1fr;
    }
    
    .contact-form-card {
        order: 1;
    }
    
    .contact-info-column {
        order: -1;
    }
    
    .social-links-row {
        justify-content: center;
    }
}
/* ============================================
   About Page Styles
   ============================================ */

/* About Section */
.about-section {
    padding: var(--spacing-8) 0;
    background: var(--gray-50);
}

.about-container {
    max-width: 900px;
}

/* Mission Card */
.mission-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-8);
    border: 1px solid var(--gray-200);
    margin-bottom: var(--spacing-8);
}

.mission-card h2 {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-4);
}

.mission-card h2 i {
    color: var(--primary);
}

.mission-card p {
    font-size: var(--text-lg);
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 0;
}

/* Values Grid */
.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-8);
}

/* Value Card */
.value-card {
    text-align: center;
    padding: var(--spacing-6);
    background: white;
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
    transition: all var(--transition-base);
}

.value-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.value-icon {
    font-size: 40px;
    margin-bottom: var(--spacing-3);
}

.value-card h3 {
    font-size: var(--text-base);
    margin-bottom: var(--spacing-1);
    color: var(--gray-800);
}

.value-card p {
    font-size: var(--text-sm);
    color: var(--gray-500);
    margin: 0;
}

/* Stats Bar */
.stats-bar {
    background: var(--primary-gradient);
    padding: var(--spacing-8);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-8);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-6);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.stats-bar::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='rgba(255,255,255,0.06)' d='M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,154.7C960,171,1056,181,1152,165.3C1248,149,1344,107,1392,85.3L1440,64L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z'%3E%3C/path%3E%3C/svg%3E") repeat-x bottom;
    background-size: cover;
    opacity: 0.3;
    pointer-events: none;
}

.stat-item {
    position: relative;
    z-index: 1;
}

.stat-number {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: var(--font-extrabold);
    color: #fff;
    line-height: 1.2;
    margin-bottom: var(--spacing-1);
}

.stat-label {
    font-size: var(--text-sm);
}

/* About CTA */
.about-cta {
    text-align: center;
    padding: var(--spacing-8);
    background: white;
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
}

.about-cta h2 {
    margin-bottom: var(--spacing-3);
}

.about-cta p {
    color: var(--gray-500);
    margin-bottom: var(--spacing-6);
}

/* Responsive */
@media (max-width: 768px) {
    .values-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .stats-bar {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-4);
    }
}

@media (max-width: 480px) {
    .values-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-bar {
        grid-template-columns: 1fr;
    }
}
/* ============================================
   FAQ Page Styles
   ============================================ */

/* FAQ Section */
.faq-section {
    padding: var(--spacing-8) 0;
    background: var(--gray-50);
}

.faq-container {
    max-width: 900px;
}

/* FAQ Search */
.faq-search-wrapper {
    margin-bottom: var(--spacing-6);
}

.faq-search {
    max-width: 500px;
    margin: 0 auto;
}

/* FAQ List */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

/* FAQ Item */
.faq-item {
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: var(--spacing-4) var(--spacing-6);
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    cursor: pointer;
    font-family: var(--font-family);
    font-weight: var(--font-semibold);
    font-size: var(--text-base);
    color: var(--gray-800);
    text-align: left;
    transition: all var(--transition-fast);
}

.faq-question:hover {
    border-color: var(--primary);
}

.faq-item.open .faq-question {
    border-color: var(--primary);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    border-bottom: none;
}

.faq-number {
    color: var(--primary);
    margin-right: var(--spacing-2);
}

.faq-icon {
    transition: transform var(--transition-fast);
    color: var(--gray-400);
    flex-shrink: 0;
    margin-left: var(--spacing-2);
}

.faq-item.open .faq-icon {
    transform: rotate(180deg);
}

/* FAQ Answer */
.faq-answer {
    display: none;
    padding: 0 var(--spacing-6) var(--spacing-6) var(--spacing-6);
    background: white;
    border: 1px solid var(--primary);
    border-top: none;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.faq-item.open .faq-answer {
    display: block;
}

.faq-answer-content {
    color: var(--gray-600);
    line-height: 1.8;
}

.faq-answer-content p {
    margin-bottom: var(--spacing-3);
}

.faq-answer-content p:last-child {
    margin-bottom: 0;
}

/* FAQ CTA */
.faq-cta {
    margin-top: var(--spacing-8);
    text-align: center;
    padding: var(--spacing-8);
    background: linear-gradient(135deg, var(--primary-50), var(--primary-100));
    border-radius: var(--radius-xl);
}

.faq-cta h2 {
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-2);
}

.faq-cta p {
    color: var(--gray-600);
    margin-bottom: var(--spacing-6);
}

.faq-cta-buttons {
    display: flex;
    gap: var(--spacing-4);
    justify-content: center;
    flex-wrap: wrap;
}

/* Responsive */
@media (max-width: 768px) {
    .faq-cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .faq-cta-buttons .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
}
/* ============================================
   RFQ Page Styles
   ============================================ */

/* RFQ Section */
.rfq-section {
    padding: var(--spacing-8) 0;
    background: var(--gray-50);
}

.rfq-container {
    max-width: 800px;
}

/* RFQ Form Card */
.rfq-form-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: clamp(var(--spacing-6), 4vw, var(--spacing-8));
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
}

/* RFQ Section Block */
.rfq-section-block {
    margin-bottom: var(--spacing-8);
}

.rfq-section-block:last-of-type {
    margin-bottom: var(--spacing-6);
}

.rfq-section-block h3 {
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-4);
    padding-bottom: var(--spacing-3);
    border-bottom: 2px solid var(--primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.rfq-section-block h3 i {
    color: var(--primary);
}

/* Form Group in RFQ */
.rfq-form-card .form-group {
    margin-bottom: var(--spacing-4);
}

.rfq-form-card .form-group:last-child {
    margin-bottom: 0;
}

/* RFQ Terms */
.rfq-terms {
    text-align: center;
    margin-top: var(--spacing-4);
    font-size: var(--text-xs);
    color: var(--gray-400);
    margin-bottom: 0;
}

.rfq-terms a {
    color: var(--primary);
    text-decoration: none;
}

.rfq-terms a:hover {
    text-decoration: underline;
}

/* RFQ Benefits */
.rfq-benefits {
    margin-top: var(--spacing-8);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-4);
}

/* Benefit Card */
.benefit-card {
    text-align: center;
    padding: var(--spacing-4);
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    transition: all var(--transition-base);
}

.benefit-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.benefit-icon {
    font-size: 32px;
    margin-bottom: var(--spacing-2);
}

.benefit-card h4 {
    font-size: var(--text-sm);
    margin-bottom: var(--spacing-1);
    color: var(--gray-800);
}

.benefit-card p {
    font-size: var(--text-xs);
    color: var(--gray-500);
    margin: 0;
}

/* Responsive */
@media (max-width: 768px) {
    .rfq-benefits {
        grid-template-columns: 1fr;
    }
}
/* ============================================
   Success Page Styles
   ============================================ */

/* Success Section */
.success-section {
    padding: var(--spacing-8) 0;
    background: var(--gray-50);
}

.success-container {
    max-width: 800px;
}

/* Success Card */
.success-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: clamp(30px, 4vw, 50px);
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
}

/* Success Icon */
.success-icon {
    font-size: 80px;
    color: var(--success);
    margin-bottom: var(--spacing-5);
    line-height: 1;
}

/* Success Title */
.success-title {
    color: var(--primary);
    margin-bottom: var(--spacing-3);
    font-size: var(--text-2xl);
}

/* Success Message */
.success-message {
    font-size: var(--text-lg);
    color: var(--gray-700);
    margin-bottom: var(--spacing-5);
}

/* Success Steps */
.success-steps {
    background: var(--primary-50);
    border-radius: var(--radius-lg);
    padding: var(--spacing-5);
    margin: var(--spacing-6) 0;
    text-align: left;
}

.success-steps h3 {
    margin-bottom: var(--spacing-3);
    font-size: var(--text-base);
}

.success-steps ol {
    margin-left: var(--spacing-6);
    color: var(--gray-600);
}

.success-steps li {
    margin-bottom: var(--spacing-2);
}

.success-steps li:last-child {
    margin-bottom: 0;
}

/* Success Actions */
.success-actions {
    display: flex;
    gap: var(--spacing-4);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-6);
}

/* Success Support */
.success-support {
    margin-top: var(--spacing-6);
    font-size: var(--text-sm);
    color: var(--gray-500);
    margin-bottom: 0;
}

.success-support a {
    color: var(--primary);
    text-decoration: none;
}

.success-support a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
    .success-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .success-actions .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
}
/* ============================================
   Pagination Styles (for category detail)
   ============================================ */

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
    margin-top: var(--spacing-8);
    flex-wrap: wrap;
}

.pagination a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    border-radius: var(--radius-md);
    background: white;
    border: 1px solid var(--gray-200);
    color: var(--gray-700);
    text-decoration: none;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    transition: all var(--transition-fast);
}

.pagination a:hover {
    background: var(--primary-50);
    border-color: var(--primary);
    color: var(--primary);
    text-decoration: none;
}

.pagination a.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.pagination .dots {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    color: var(--gray-400);
    font-size: var(--text-sm);
    cursor: default;
}

.pagination-prev,
.pagination-next {
    padding: 0 14px !important;
}

.pagination-info {
    text-align: center;
    margin-top: var(--spacing-4);
    font-size: var(--text-sm);
    color: var(--gray-500);
}

/* Responsive */
@media (max-width: 768px) {
    .pagination a {
        min-width: 36px;
        height: 36px;
        padding: 0 10px;
        font-size: 13px;
    }
    
    .pagination .dots {
        min-width: 36px;
        height: 36px;
    }
}
/* Fix: section-desc center alignment */
.section-desc {
    max-width: none !important;
    margin-left: auto !important;
    margin-right: auto !important;
}

/* Literature */
.literature-item {
    background: #f8faff;
    border: 1px solid #e9edf4;
    border-radius: 8px;
    padding: 18px;
    margin-bottom: 16px;
    transition: all 0.2s;
}
.literature-item:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.06);
}
.lit-title {
    font-weight: 600;
    font-size: 1.05rem;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.lit-title i {
    color: #0066cc;
}
.lit-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 10px;
}
.lit-meta a {
    color: #0066cc;
    text-decoration: none;
}
.lit-meta a:hover {
    text-decoration: underline;
}
.lit-abstract {
    font-size: 0.95rem;
    line-height: 1.6;
    color: #444;
    margin-bottom: 10px;
}
.lit-cas {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
}
.lit-cas .label {
    font-weight: 500;
    color: #666;
    margin-right: 4px;
}
.cas-tag {
    background: #eef2f7;
    padding: 2px 10px;
    border-radius: 14px;
    color: #0066cc;
    text-decoration: none;
    font-family: monospace;
    font-size: 0.8rem;
}
.cas-tag:hover {
    background: #dce5f0;
    text-decoration: none;
}