/**
 * LankaMarket - Modern Sri Lankan Classified Marketplace
 * High Quality Vanilla CSS3 Design System
 */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
    --primary: #008a5e;
    --primary-hover: #00704c;
    --primary-light: #e6f6f0;
    --primary-dark: #004d34;
    
    --accent: #ffb800;
    --accent-hover: #e6a600;
    --accent-light: #fffbeb;
    
    --whatsapp: #25d366;
    --whatsapp-dark: #128c7e;
    
    --slate-900: #0f172a;
    --slate-800: #1e293b;
    --slate-700: #334155;
    --slate-600: #475569;
    --slate-500: #64748b;
    --slate-400: #94a3b8;
    --slate-300: #cbd5e1;
    --slate-200: #e2e8f0;
    --slate-100: #f1f5f9;
    --slate-50: #f8fafc;
    
    --white: #ffffff;
    --danger: #ef4444;
    --danger-light: #fef2f2;
    --success: #10b981;
    --warning: #f59e0b;
    --info: #3b82f6;
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--slate-50);
    color: var(--slate-700);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
}

main {
    flex: 1 0 auto;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* Container */
.container {
    width: 100%;
    max-width: 1240px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.25rem;
    padding-right: 1.25rem;
}

/* Top Bar */
.top-bar {
    background-color: var(--slate-900);
    color: var(--slate-400);
    font-size: 0.825rem;
    padding: 0.45rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.top-bar-left, .top-bar-right {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}
.top-bar a:hover {
    color: var(--white);
}

/* Navbar */
.navbar {
    background-color: var(--white);
    border-bottom: 1px solid var(--slate-200);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}
.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--slate-900);
    letter-spacing: -0.5px;
}
.logo-icon {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.15rem;
    box-shadow: 0 4px 10px rgba(0, 138, 94, 0.35);
}
.logo span.lk {
    color: var(--primary);
}

/* Nav Links */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    list-style: none;
}
.nav-link {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--slate-700);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}
.nav-link:hover, .nav-link.active {
    color: var(--primary);
}

/* Nav Actions */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.65rem 1.25rem;
    font-size: 0.925rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}
.btn-sm {
    padding: 0.4rem 0.85rem;
    font-size: 0.825rem;
}
.btn-lg {
    padding: 0.85rem 1.75rem;
    font-size: 1rem;
}
.btn-primary {
    background-color: var(--primary);
    color: var(--white);
}
.btn-primary:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 4px 12px rgba(0, 138, 94, 0.25);
    color: var(--white);
}
.btn-accent {
    background: linear-gradient(135deg, #ffb800, #f59e0b);
    color: var(--slate-900);
    box-shadow: 0 4px 12px rgba(255, 184, 0, 0.35);
}
.btn-accent:hover {
    background: linear-gradient(135deg, #e6a600, #d97706);
    color: var(--slate-900);
}
.btn-outline {
    border-color: var(--slate-300);
    background-color: transparent;
    color: var(--slate-700);
}
.btn-outline:hover {
    background-color: var(--slate-100);
    border-color: var(--slate-400);
}
.btn-outline-primary {
    border-color: var(--primary);
    color: var(--primary);
    background: transparent;
}
.btn-outline-primary:hover {
    background: var(--primary-light);
    color: var(--primary);
}
.btn-whatsapp {
    background-color: var(--whatsapp);
    color: var(--white);
}
.btn-whatsapp:hover {
    background-color: var(--whatsapp-dark);
    color: var(--white);
}
.btn-danger {
    background-color: var(--danger);
    color: var(--white);
}
.btn-danger:hover {
    background-color: #dc2626;
}
.btn-post-ad {
    background: linear-gradient(135deg, #ffb800, #f59e0b);
    color: var(--slate-900);
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}
.btn-post-ad:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(245, 158, 11, 0.4);
}

/* User Menu & Badges */
.nav-user-item {
    position: relative;
}
.nav-badge {
    position: absolute;
    top: -6px;
    right: -8px;
    background-color: var(--danger);
    color: var(--white);
    font-size: 0.65rem;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: var(--radius-full);
}
.user-dropdown-btn {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.35rem 0.65rem;
    border-radius: var(--radius-full);
    border: 1px solid var(--slate-200);
    background: var(--slate-50);
    cursor: pointer;
}
.user-dropdown-btn:hover {
    background: var(--slate-100);
}
.user-avatar-sm {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    object-fit: cover;
}
.dropdown-menu {
    position: absolute;
    right: 0;
    top: calc(100% + 8px);
    background: var(--white);
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 210px;
    padding: 0.5rem 0;
    z-index: 150;
    display: none;
}
.dropdown-menu.show {
    display: block;
    animation: fadeInDown 0.15s ease-out;
}
.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 1.15rem;
    color: var(--slate-700);
    font-size: 0.9rem;
    font-weight: 500;
}
.dropdown-item:hover {
    background-color: var(--slate-50);
    color: var(--primary);
}
.dropdown-divider {
    height: 1px;
    background-color: var(--slate-200);
    margin: 0.4rem 0;
}

/* Mobile Menu Toggle */
.mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.35rem;
    color: var(--slate-700);
    cursor: pointer;
    padding: 0.5rem;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--slate-900) 0%, #134e4a 100%);
    color: var(--white);
    padding: 3.5rem 0 4rem;
    position: relative;
    overflow: hidden;
}
.hero-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 80% 20%, rgba(0, 138, 94, 0.25) 0%, transparent 60%);
    pointer-events: none;
}
.hero-content {
    max-width: 860px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 2;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 0.35rem 0.95rem;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 1.25rem;
}
.hero-title {
    font-size: 2.75rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
}
.hero-subtitle {
    font-size: 1.15rem;
    color: var(--slate-300);
    margin-bottom: 2rem;
}

/* Hero Search Box */
.hero-search-box {
    background: var(--white);
    padding: 0.65rem;
    border-radius: var(--radius-xl);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
    display: grid;
    grid-template-columns: 2fr 1.25fr 1.25fr auto;
    gap: 0.5rem;
    align-items: center;
}
.search-input-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 1rem;
    border-right: 1px solid var(--slate-200);
}
.search-input-group:last-of-type {
    border-right: none;
}
.search-input-group i {
    color: var(--primary);
    font-size: 1.1rem;
}
.search-input-group input, 
.search-input-group select {
    width: 100%;
    border: none;
    outline: none;
    background: transparent;
    color: var(--slate-800);
    font-size: 0.95rem;
    font-weight: 500;
}
.search-input-group input::placeholder {
    color: var(--slate-400);
}
.hero-search-btn {
    padding: 0.85rem 1.75rem;
    font-size: 1rem;
    border-radius: var(--radius-lg);
}

/* Popular Suggestions */
.popular-searches {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 1.5rem;
    font-size: 0.875rem;
    color: var(--slate-300);
}
.search-tag {
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    color: var(--white);
    font-size: 0.8rem;
    transition: var(--transition);
}
.search-tag:hover {
    background: rgba(255, 255, 255, 0.25);
    color: var(--white);
}

/* Section Header */
.section-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 1.75rem;
}
.section-title {
    font-size: 1.65rem;
    font-weight: 800;
    color: var(--slate-900);
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 0.65rem;
}
.section-title i {
    color: var(--primary);
}
.section-subtitle {
    color: var(--slate-500);
    font-size: 0.95rem;
    margin-top: 0.25rem;
}
.view-all-link {
    font-weight: 700;
    color: var(--primary);
    font-size: 0.925rem;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}
.view-all-link:hover {
    gap: 0.55rem;
}

/* Categories Grid */
.categories-section {
    padding: 3.5rem 0;
    background: var(--white);
}
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
    gap: 1.25rem;
}
.category-card {
    background: var(--slate-50);
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-lg);
    padding: 1.35rem 1rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
}
.category-card:hover {
    background: var(--white);
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: 0 10px 20px rgba(0, 138, 94, 0.1);
}
.category-icon-wrap {
    width: 58px;
    height: 58px;
    border-radius: var(--radius-md);
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.45rem;
    margin-bottom: 0.85rem;
    transition: var(--transition);
}
.category-card:hover .category-icon-wrap {
    background: var(--primary);
    color: var(--white);
    transform: scale(1.08);
}
.category-name {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--slate-800);
    margin-bottom: 0.25rem;
}
.category-count {
    font-size: 0.775rem;
    color: var(--slate-500);
    font-weight: 500;
}

/* Advertisement Cards Grid */
.ads-section {
    padding: 3.5rem 0;
}
.ads-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
    gap: 1.5rem;
}
.ad-card {
    background: var(--white);
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
    position: relative;
}
.ad-card:hover {
    border-color: var(--slate-300);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.ad-card-img-wrap {
    position: relative;
    width: 100%;
    height: 190px;
    background-color: var(--slate-100);
    overflow: hidden;
}
.ad-card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.ad-card:hover .ad-card-img {
    transform: scale(1.05);
}
.ad-badge-featured {
    position: absolute;
    top: 10px;
    left: 10px;
    background: linear-gradient(135deg, #ffb800, #f59e0b);
    color: var(--slate-900);
    font-size: 0.7rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 3px 8px;
    border-radius: var(--radius-sm);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    gap: 0.3rem;
    z-index: 2;
}
.ad-badge-condition {
    position: absolute;
    bottom: 10px;
    left: 10px;
    background: rgba(15, 23, 42, 0.75);
    backdrop-filter: blur(4px);
    color: var(--white);
    font-size: 0.7rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    z-index: 2;
}
.btn-favorite-card {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.9);
    border: none;
    color: var(--slate-400);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    z-index: 3;
    font-size: 0.95rem;
}
.btn-favorite-card:hover {
    background: var(--white);
    color: var(--danger);
    transform: scale(1.1);
}
.btn-favorite-card.active {
    color: var(--danger);
    background: var(--white);
}

.ad-card-body {
    padding: 1.15rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}
.ad-card-meta {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    font-size: 0.775rem;
    color: var(--slate-500);
    margin-bottom: 0.4rem;
}
.ad-card-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--slate-900);
    line-height: 1.35;
    margin-bottom: 0.6rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    height: 2.7rem;
}
.ad-card-title:hover {
    color: var(--primary);
}
.ad-card-price {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 0.65rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.price-type-tag {
    font-size: 0.7rem;
    font-weight: 600;
    background: var(--slate-100);
    color: var(--slate-600);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}
.ad-card-footer {
    margin-top: auto;
    padding-top: 0.75rem;
    border-top: 1px solid var(--slate-100);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--slate-500);
}
.ad-card-location {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

/* Locations Pill Grid */
.locations-section {
    padding: 3.5rem 0;
    background: var(--white);
    border-top: 1px solid var(--slate-200);
    border-bottom: 1px solid var(--slate-200);
}
.locations-pill-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
}
.location-pill {
    background: var(--slate-50);
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-full);
    padding: 0.45rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--slate-700);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: var(--transition);
}
.location-pill span.badge {
    background: var(--slate-200);
    color: var(--slate-600);
    font-size: 0.75rem;
    padding: 1px 6px;
    border-radius: var(--radius-full);
}
.location-pill:hover {
    background: var(--primary-light);
    border-color: var(--primary);
    color: var(--primary);
}

/* How It Works & Safety */
.features-section {
    padding: 4rem 0;
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}
.feature-card {
    background: var(--white);
    padding: 2.25rem 1.75rem;
    border-radius: var(--radius-xl);
    border: 1px solid var(--slate-200);
    text-align: center;
    transition: var(--transition);
}
.feature-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}
.feature-icon-box {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    margin: 0 auto 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.65rem;
}
.feature-icon-1 { background: #e0f2fe; color: #0284c7; }
.feature-icon-2 { background: #fef3c7; color: #d97706; }
.feature-icon-3 { background: #dcfce7; color: #16a34a; }
.feature-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--slate-900);
    margin-bottom: 0.5rem;
}
.feature-desc {
    color: var(--slate-500);
    font-size: 0.9rem;
}

/* CTA Banner */
.cta-banner {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: var(--radius-xl);
    padding: 3rem;
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    margin: 2rem auto 4rem;
    box-shadow: 0 15px 30px rgba(0, 138, 94, 0.25);
}
.cta-text h3 {
    font-size: 1.85rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}
.cta-text p {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.85);
}

/* Footer */
.footer {
    background-color: var(--slate-900);
    color: var(--slate-400);
    padding-top: 4rem;
    font-size: 0.9rem;
}
.footer-top {
    display: grid;
    grid-template-columns: 1.75fr 1fr 1fr 1fr;
    gap: 3rem;
    padding-bottom: 3.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand p {
    margin: 1rem 0 1.5rem;
    line-height: 1.6;
    max-width: 320px;
}
.footer-socials {
    display: flex;
    gap: 0.75rem;
}
.social-icon {
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: var(--transition);
}
.social-icon:hover {
    background: var(--primary);
    transform: translateY(-2px);
}
.footer-title {
    color: var(--white);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
}
.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}
.footer-links a:hover {
    color: var(--white);
    padding-left: 4px;
}
.footer-bottom {
    padding: 1.5rem 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.825rem;
}

/* Auth Pages (Login / Register) */
.auth-wrapper {
    min-height: calc(100vh - 180px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2.5rem 1.25rem;
}
.auth-card {
    background: var(--white);
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 480px;
    padding: 2.5rem;
}
.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}
.auth-title {
    font-size: 1.65rem;
    font-weight: 800;
    color: var(--slate-900);
}
.auth-subtitle {
    color: var(--slate-500);
    font-size: 0.9rem;
    margin-top: 0.35rem;
}
.form-group {
    margin-bottom: 1.25rem;
}
.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--slate-700);
    margin-bottom: 0.4rem;
}
.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--slate-300);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    color: var(--slate-800);
    background-color: var(--white);
    transition: var(--transition);
}
.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 138, 94, 0.15);
    outline: none;
}
textarea.form-control {
    min-height: 120px;
    resize: vertical;
}
.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
}
.alert {
    padding: 0.85rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.65rem;
}
.alert-danger {
    background: var(--danger-light);
    color: #991b1b;
    border: 1px solid #fecaca;
}
.alert-success {
    background: #ecfdf5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}
.alert-info {
    background: #eff6ff;
    color: #1e40af;
    border: 1px solid #bfdbfe;
}

/* Ad Details Page Layout */
.ad-details-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    margin: 2rem 0 3.5rem;
}
.gallery-main-img {
    width: 100%;
    height: 440px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    background-color: var(--slate-100);
}
.gallery-thumbs {
    display: flex;
    gap: 0.75rem;
    margin-top: 0.75rem;
    overflow-x: auto;
    padding-bottom: 0.5rem;
}
.gallery-thumb-item {
    width: 80px;
    height: 60px;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    opacity: 0.7;
    transition: var(--transition);
    flex-shrink: 0;
}
.gallery-thumb-item.active, .gallery-thumb-item:hover {
    border-color: var(--primary);
    opacity: 1;
}
.gallery-thumb-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.details-box {
    background: var(--white);
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    margin-bottom: 1.5rem;
}
.details-title {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--slate-900);
    line-height: 1.3;
    margin-bottom: 0.5rem;
}
.details-price {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.details-meta-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1.25rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--slate-200);
    font-size: 0.875rem;
    color: var(--slate-500);
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin: 1.5rem 0;
    background: var(--slate-50);
    padding: 1.25rem;
    border-radius: var(--radius-md);
}
.spec-item {
    display: flex;
    flex-direction: column;
}
.spec-label {
    font-size: 0.775rem;
    color: var(--slate-400);
    text-transform: uppercase;
    font-weight: 600;
}
.spec-value {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--slate-800);
}

.seller-card {
    background: var(--white);
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    position: sticky;
    top: 90px;
}
.seller-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.25rem;
}
.seller-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    object-fit: cover;
}
.seller-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--slate-900);
}
.seller-verified {
    font-size: 0.75rem;
    color: var(--primary);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}
.phone-reveal-box {
    background: var(--slate-50);
    border: 1px dashed var(--slate-300);
    border-radius: var(--radius-md);
    padding: 0.75rem;
    text-align: center;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--slate-800);
    cursor: pointer;
    margin-bottom: 0.75rem;
    transition: var(--transition);
}
.phone-reveal-box:hover {
    background: var(--slate-100);
}

/* User & Dashboard Layout */
.dashboard-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 2rem;
    padding: 2.5rem 0;
}
.dashboard-sidebar {
    background: var(--white);
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    height: fit-content;
}
.sidebar-user-info {
    text-align: center;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--slate-200);
    margin-bottom: 1rem;
}
.sidebar-avatar {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    margin: 0 auto 0.75rem;
    object-fit: cover;
}
.sidebar-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}
.sidebar-menu a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.7rem 0.95rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--slate-600);
}
.sidebar-menu a:hover, .sidebar-menu a.active {
    background: var(--primary-light);
    color: var(--primary);
}
.sidebar-menu a i {
    width: 20px;
    margin-right: 0.5rem;
}

/* Stat Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.25rem;
    margin-bottom: 1.75rem;
}
.stat-card {
    background: var(--white);
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-lg);
    padding: 1.35rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
}
.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
}
.stat-val {
    font-size: 1.65rem;
    font-weight: 800;
    color: var(--slate-900);
    line-height: 1;
}
.stat-label {
    font-size: 0.825rem;
    color: var(--slate-500);
    font-weight: 600;
    margin-top: 0.25rem;
}

/* Data Table */
.table-responsive {
    overflow-x: auto;
    background: var(--white);
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-lg);
}
.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.9rem;
}
.data-table th {
    background: var(--slate-50);
    color: var(--slate-600);
    font-weight: 700;
    padding: 0.85rem 1.15rem;
    border-bottom: 1px solid var(--slate-200);
}
.data-table td {
    padding: 0.95rem 1.15rem;
    border-bottom: 1px solid var(--slate-100);
    vertical-align: middle;
}
.data-table tr:last-child td {
    border-bottom: none;
}
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 3px 8px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
}
.status-approved { background: #dcfce7; color: #15803d; }
.status-pending { background: #fef3c7; color: #b45309; }
.status-rejected { background: #fee2e2; color: #b91c1c; }
.status-sold { background: #e2e8f0; color: #475569; }

/* Image Upload Preview Box */
.image-upload-dropzone {
    border: 2px dashed var(--slate-300);
    border-radius: var(--radius-lg);
    padding: 2.5rem 1.5rem;
    text-align: center;
    background: var(--slate-50);
    cursor: pointer;
    transition: var(--transition);
}
.image-upload-dropzone:hover {
    border-color: var(--primary);
    background: var(--primary-light);
}
.preview-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: 0.85rem;
    margin-top: 1.25rem;
}
.preview-item {
    position: relative;
    width: 100%;
    height: 90px;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--slate-200);
}
.preview-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.preview-remove-btn {
    position: absolute;
    top: 4px;
    right: 4px;
    background: rgba(239, 68, 68, 0.9);
    color: var(--white);
    border: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    cursor: pointer;
}

/* Chat & Messages Interface */
.chat-container {
    display: grid;
    grid-template-columns: 320px 1fr;
    background: var(--white);
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-lg);
    min-height: 580px;
    overflow: hidden;
}
.chat-sidebar {
    border-right: 1px solid var(--slate-200);
    overflow-y: auto;
}
.conv-item {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 1rem;
    border-bottom: 1px solid var(--slate-100);
    cursor: pointer;
    transition: var(--transition);
}
.conv-item:hover, .conv-item.active {
    background: var(--slate-50);
}
.conv-item.active {
    border-left: 4px solid var(--primary);
}
.chat-main {
    display: flex;
    flex-direction: column;
}
.chat-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--slate-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.chat-messages {
    flex-grow: 1;
    padding: 1.5rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-height: 440px;
}
.message-bubble {
    max-width: 70%;
    padding: 0.75rem 1.15rem;
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
    line-height: 1.4;
    position: relative;
}
.message-outgoing {
    align-self: flex-end;
    background: var(--primary);
    color: var(--white);
    border-bottom-right-radius: var(--radius-sm);
}
.message-incoming {
    align-self: flex-start;
    background: var(--slate-100);
    color: var(--slate-800);
    border-bottom-left-radius: var(--radius-sm);
}
.message-time {
    font-size: 0.7rem;
    opacity: 0.75;
    margin-top: 0.25rem;
    text-align: right;
}
.chat-form {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--slate-200);
    display: flex;
    gap: 0.75rem;
}

/* Search Sidebar */
.search-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 2rem;
    margin: 2.5rem 0;
}
.filter-card {
    background: var(--white);
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}
.filter-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--slate-900);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--slate-100);
}

/* Modals */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}
.modal-backdrop.show {
    display: flex;
    animation: fadeIn 0.2s ease-out;
}
.modal-box {
    background: var(--white);
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 520px;
    padding: 2rem;
    position: relative;
    box-shadow: var(--shadow-xl);
}
.modal-close-btn {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--slate-400);
    cursor: pointer;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
    .hero-search-box {
        grid-template-columns: 1fr 1fr;
    }
    .hero-search-btn {
        grid-column: span 2;
    }
    .ad-details-layout,
    .dashboard-layout,
    .search-layout {
        grid-template-columns: 1fr;
    }
    .features-grid {
        grid-template-columns: 1fr;
    }
    .footer-top {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .top-bar {
        display: none;
    }
    .mobile-toggle {
        display: block;
    }
    .nav-menu {
        position: fixed;
        top: 72px;
        left: -100%;
        width: 80%;
        max-width: 300px;
        height: calc(100vh - 72px);
        background: var(--white);
        flex-direction: column;
        align-items: flex-start;
        padding: 1.5rem;
        box-shadow: var(--shadow-xl);
        transition: left 0.3s ease;
        z-index: 99;
    }
    .nav-menu.open {
        left: 0;
    }
    .hero-title {
        font-size: 2rem;
    }
    .hero-search-box {
        grid-template-columns: 1fr;
    }
    .hero-search-btn {
        grid-column: span 1;
    }
    .search-input-group {
        border-right: none;
        border-bottom: 1px solid var(--slate-100);
    }
    .cta-banner {
        flex-direction: column;
        text-align: center;
        padding: 2rem 1.5rem;
    }
    .footer-top {
        grid-template-columns: 1fr;
    }
    .chat-container {
        grid-template-columns: 1fr;
    }
    .chat-sidebar {
        display: none; /* can toggle in mobile */
    }
}