/**
 * Kleinanzeigen - Modernes CSS
 * Clean, aufgeräumt, responsiv
 */

/* ========================================
   CSS Variables & Reset
   ======================================== */
:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #3b82f6;
    --color-secondary: #64748b;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    
    --color-bg: #f8fafc;
    --color-bg-alt: #f1f5f9;
    --color-surface: #ffffff;
    --color-border: #e2e8f0;
    --color-border-light: #f1f5f9;
    
    --color-text: #1e293b;
    --color-text-light: #475569;
    --color-text-muted: #64748b;
    
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1);
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-full: 9999px;
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    
    --transition: 0.2s ease;
    --container-width: 1200px;
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.3;
    color: var(--color-text);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }

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

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

/* ========================================
   Layout
   ======================================== */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1rem;
    overflow-x: hidden;
}

.page-content {
    padding: 2rem 0;
    min-height: calc(100vh - 160px);
    overflow-x: hidden;
}

/* ========================================
   Header & Navigation
   ======================================== */
.header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    gap: 1rem;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
}

.nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-link {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    color: var(--color-text);
    font-weight: 500;
    font-size: 0.9rem;
    transition: all var(--transition);
}

.nav-link:hover {
    background: var(--color-bg-alt);
    color: var(--color-primary);
}

.nav-link.active {
    background: var(--color-primary);
    color: white;
}

.btn-post {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: white;
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--transition);
    box-shadow: var(--shadow-md);
}

.btn-post:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
    color: white;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
}

/* ========================================
   Search Bar
   ======================================== */
.search-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    padding: 3rem 0;
}

.search-title {
    color: white;
    text-align: center;
    margin-bottom: 1.5rem;
    font-size: 1.75rem;
}

.search-form {
    display: flex;
    gap: 0.75rem;
    max-width: 800px;
    margin: 0 auto;
    flex-wrap: wrap;
}

.search-input-wrap {
    flex: 1;
    min-width: 200px;
    position: relative;
}

.search-input-wrap .icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
}

.search-input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    box-shadow: var(--shadow-lg);
}

.search-input:focus {
    outline: 3px solid rgba(255,255,255,0.3);
}

.search-select {
    padding: 1rem 1.5rem;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    background: white;
    cursor: pointer;
    min-width: 180px;
}

.search-btn {
    padding: 1rem 2rem;
    background: var(--color-text);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
}

.search-btn:hover {
    background: #000;
    transform: scale(1.02);
}

/* ========================================
   Categories Grid
   ======================================== */
.categories-section {
    padding: 3rem 0;
}

.section-title {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 1rem;
}

.category-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem 1rem;
    text-align: center;
    transition: all var(--transition);
    cursor: pointer;
}

.category-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.category-icon {
    width: 48px;
    height: 48px;
    background: var(--color-bg-alt);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.75rem;
    font-size: 1.5rem;
    transition: all var(--transition);
}

.category-card:hover .category-icon {
    background: var(--color-primary);
    color: white;
}

.category-name {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-text);
}

.category-count {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: 0.25rem;
}

/* ========================================
   Ad Cards Grid
   ======================================== */
.ads-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.ad-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: all var(--transition);
}

.ad-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.ad-card-image {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
    background: var(--color-bg-alt);
}

.ad-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition);
}

.ad-card:hover .ad-card-image img {
    transform: scale(1.05);
}

.ad-card-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    font-size: 3rem;
}

.ad-card-badge {
    position: absolute;
    top: 0.75rem;
    left: 0.75rem;
    background: var(--color-primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.ad-card-favorite {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    width: 36px;
    height: 36px;
    background: white;
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all var(--transition);
}

.ad-card-favorite:hover {
    background: var(--color-error);
    color: white;
}

.ad-card-content {
    padding: 1rem;
}

.ad-card-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.25rem;
}

.ad-card-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ad-card-title a {
    color: var(--color-text);
}

.ad-card-title a:hover {
    color: var(--color-primary);
}

.ad-card-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.ad-card-meta span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.price-free {
    color: var(--color-success);
    font-weight: 600;
}

.price-request {
    color: var(--color-text-light);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
}

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

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

.btn-secondary {
    background: var(--color-bg-alt);
    color: var(--color-text);
}

.btn-secondary:hover {
    background: var(--color-border);
}

.btn-success {
    background: var(--color-success);
    color: white;
}

.btn-danger {
    background: var(--color-error);
    color: white;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--color-border);
    color: var(--color-text);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

.btn-block {
    width: 100%;
}

/* ========================================
   Forms
   ======================================== */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

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

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    transition: all var(--transition);
    background: var(--color-surface);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

.form-hint {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-top: 0.5rem;
}

.form-error {
    color: var(--color-error);
    font-size: 0.85rem;
    margin-top: 0.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

/* ========================================
   Image Upload
   ======================================== */
.image-upload {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    background: var(--color-bg-alt);
}

.image-upload:hover {
    border-color: var(--color-primary);
    background: rgba(37, 99, 235, 0.05);
}

.image-upload.dragover {
    border-color: var(--color-primary);
    background: rgba(37, 99, 235, 0.1);
}

.image-upload-icon {
    font-size: 3rem;
    color: var(--color-text-muted);
    margin-bottom: 1rem;
}

.image-upload-text {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.image-upload-hint {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.image-preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.image-preview-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--color-bg-alt);
}

.image-preview-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-preview-remove {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    width: 24px;
    height: 24px;
    background: var(--color-error);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ========================================
   Cards & Panels
   ======================================== */
.card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    overflow: hidden;
}

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 700;
}

.card-body {
    padding: 1.5rem;
    overflow-wrap: break-word;
    word-break: break-word;
}

.card-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-alt);
}

/* ========================================
   Alerts
   ======================================== */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
}

.alert-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-weight: bold;
}

.alert-success {
    background: #ecfdf5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-success .alert-icon {
    background: var(--color-success);
    color: white;
}

.alert-error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-error .alert-icon {
    background: var(--color-error);
    color: white;
}

.alert-warning {
    background: #fffbeb;
    color: #92400e;
    border: 1px solid #fde68a;
}

/* ========================================
   Pagination
   ======================================== */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 2rem;
}

.pagination a,
.pagination span {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    font-weight: 500;
}

.pagination a:hover {
    background: var(--color-bg-alt);
    color: var(--color-text);
}

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

/* ========================================
   Tables
   ======================================== */
.table-wrap {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.table th {
    background: var(--color-bg-alt);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-light);
}

.table tbody tr:hover {
    background: var(--color-bg-alt);
}

/* ========================================
   User Dashboard
   ======================================== */
.dashboard-layout {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 2rem;
}

.dashboard-sidebar {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    height: fit-content;
    border: 1px solid var(--color-border);
}

.dashboard-nav {
    list-style: none;
}

.dashboard-nav li {
    margin-bottom: 0.5rem;
}

.dashboard-nav a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-weight: 500;
    transition: all var(--transition);
}

.dashboard-nav a:hover,
.dashboard-nav a.active {
    background: var(--color-primary);
    color: white;
}

.dashboard-main {
    min-width: 0;
}

/* ========================================
   Ad Detail Page
   ======================================== */
.ad-detail {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 1.5rem;
    align-items: start;
}

.ad-detail-main {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    min-width: 0;
    overflow: hidden;
}

.ad-gallery {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.ad-gallery-main {
    aspect-ratio: 4/3;
    background: var(--color-bg-alt);
    display: flex;
    align-items: center;
    justify-content: center;
}

.ad-gallery-main img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: var(--color-bg-alt);
}

.ad-gallery-placeholder {
    font-size: 5rem;
    color: var(--color-text-muted);
}

.ad-gallery-thumbs {
    display: flex;
    gap: 0.5rem;
    padding: 1rem;
    overflow-x: auto;
}

.ad-gallery-thumb {
    width: 60px;
    height: 45px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
    opacity: 0.6;
    transition: all var(--transition);
    flex-shrink: 0;
}

.ad-gallery-thumb:hover,
.ad-gallery-thumb.active {
    opacity: 1;
}

.ad-gallery-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.ad-description {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    margin-top: 1.5rem;
    overflow: hidden;
}

.ad-description-content {
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-wrap: break-word;
    word-break: break-word;
    line-height: 1.7;
    max-width: 100%;
    overflow-x: hidden;
}

.ad-info {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    border: 1px solid var(--color-border);
}

.ad-price-tag {
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

/* Neue Preis-Box mit grünem Hintergrund - volle Breite */
.ad-price-box {
    background: #d1fae5;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--color-border);
}

.ad-price-box .price {
    font-size: 1.5rem;
    font-weight: 700;
    color: #000;
}

.ad-price-box .price-free {
    font-size: 1.5rem;
    font-weight: 700;
    color: #000;
}

.ad-price-box .price-request {
    font-size: 1.25rem;
    font-weight: 600;
    color: #000;
}

/* Haupttitel über Beschreibung */
.ad-main-title {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-text);
    margin: 0;
    padding: 1.25rem 1.5rem;
    word-break: break-word;
    overflow-wrap: break-word;
    line-height: 1.35;
    border-bottom: 1px solid var(--color-border);
}

.ad-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    word-break: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
    -webkit-hyphens: auto;
    line-height: 1.35;
}

.ad-title-location {
    font-size: 0.65em;
    font-weight: 500;
    color: var(--color-text-light);
    display: inline;
}

.ad-meta-list {
    list-style: none;
    margin-bottom: 1.5rem;
}

.ad-meta-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border-light);
    color: var(--color-text-light);
}

.ad-meta-list li:last-child {
    border-bottom: none;
}

.ad-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    min-width: 0;
}

.seller-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    border: 1px solid var(--color-border);
}

.seller-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.seller-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--color-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
}

.seller-name {
    font-weight: 600;
}

.seller-since {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

/* ========================================
   Auth Pages
   ======================================== */
.auth-container {
    max-width: 440px;
    margin: 3rem auto;
}

.auth-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 2.5rem;
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-header h1 {
    margin-bottom: 0.5rem;
}

.auth-header p {
    color: var(--color-text-light);
}

.auth-footer {
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-border);
    color: var(--color-text-light);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--color-text);
    color: rgba(255,255,255,0.7);
    padding: 3rem 0 1.5rem;
    margin-top: auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-title {
    color: white;
    font-size: 1rem;
    margin-bottom: 1rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: rgba(255,255,255,0.7);
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
    font-size: 0.9rem;
}

/* ========================================
   Admin Styles
   ======================================== */
.admin-header {
    background: var(--color-text);
    color: white;
    padding: 1rem;
}

.admin-layout {
    display: grid;
    grid-template-columns: 250px 1fr;
    min-height: calc(100vh - 60px);
}

.admin-sidebar {
    background: #1e293b;
    padding: 1.5rem;
}

.admin-nav {
    list-style: none;
}

.admin-nav a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1rem;
    color: rgba(255,255,255,0.7);
    border-radius: var(--radius-md);
    margin-bottom: 0.25rem;
    transition: all var(--transition);
}

.admin-nav a:hover,
.admin-nav a.active {
    background: var(--color-primary);
    color: white;
}

.admin-main {
    padding: 2rem;
    background: var(--color-bg);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    border: 1px solid var(--color-border);
}

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-primary);
}

.stat-label {
    color: var(--color-text-light);
    font-size: 0.9rem;
}

/* ========================================
   Utilities
   ======================================== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--color-text-muted); }
.text-success { color: var(--color-success); }
.text-error { color: var(--color-error); }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }

.hidden { display: none; }

.badge {
    display: inline-flex;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-success {
    background: #d1fae5;
    color: #065f46;
}

.badge-warning {
    background: #fef3c7;
    color: #92400e;
}

.badge-error {
    background: #fee2e2;
    color: #991b1b;
}

.badge-info {
    background: #dbeafe;
    color: #1e40af;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
    .ad-detail {
        grid-template-columns: 1fr;
    }
    
    .ad-sidebar {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 1rem;
    }
    
    .ad-info {
        order: -1;
    }
    
    .dashboard-layout {
        grid-template-columns: 1fr;
    }
    
    .dashboard-sidebar {
        display: none;
    }
    
    .admin-layout {
        grid-template-columns: 1fr;
    }
    
    .admin-sidebar {
        display: none;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 0.75rem;
    }
    
    .page-content {
        padding: 1rem 0;
    }
    
    .header-inner {
        flex-wrap: wrap;
    }
    
    .nav {
        display: none;
        width: 100%;
        flex-direction: column;
        gap: 0.5rem;
        padding-top: 1rem;
    }
    
    .nav.active {
        display: flex;
    }
    
    .nav-link {
        width: 100%;
        text-align: center;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .search-section {
        padding: 2rem 0;
    }
    
    .search-title {
        font-size: 1.25rem;
    }
    
    .search-form {
        flex-direction: column;
    }
    
    .search-select {
        width: 100%;
    }
    
    .categories-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }
    
    .category-card {
        padding: 1rem 0.5rem;
    }
    
    .category-icon {
        width: 40px;
        height: 40px;
        font-size: 1.25rem;
    }
    
    .ads-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: 1rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .auth-container {
        margin: 1rem;
    }
    
    .auth-card {
        padding: 1.5rem;
    }
    
    /* Ad Detail Mobile */
    .ad-detail {
        gap: 1rem;
    }
    
    .ad-sidebar {
        grid-template-columns: 1fr;
    }
    
    .ad-gallery {
        border-radius: var(--radius-md);
    }
    
    .ad-gallery-main {
        aspect-ratio: 16/10;
    }
    
    .ad-gallery-thumbs {
        padding: 0.75rem;
        gap: 0.5rem;
    }
    
    .ad-gallery-thumb {
        width: 60px;
        height: 45px;
    }
    
    .ad-info {
        padding: 1rem;
        border-radius: var(--radius-md);
    }
    
    .ad-title {
        font-size: 1.15rem;
        margin-bottom: 0.75rem;
        line-height: 1.35;
    }
    
    .ad-title-location {
        display: block;
        margin-top: 0.35rem;
        font-size: 0.85rem;
    }

    .ad-price-tag {
        font-size: 1.5rem;
        margin-bottom: 0.5rem;
    }
    
    .ad-title {
        font-size: 1.25rem;
        margin-bottom: 0.75rem;
        line-height: 1.3;
    }
    
    .ad-meta-list {
        margin-bottom: 1rem;
    }
    
    .ad-meta-list li {
        padding: 0.5rem 0;
        font-size: 0.9rem;
    }
    
    .seller-card {
        padding: 1rem;
        border-radius: var(--radius-md);
    }
    
    .seller-info {
        margin-bottom: 0.75rem;
    }
    
    .seller-avatar {
        width: 48px;
        height: 48px;
        font-size: 1.25rem;
    }
    
    .btn-block {
        padding: 0.875rem 1rem;
    }
    
    .card {
        border-radius: var(--radius-md);
    }
    
    .card-header {
        padding: 1rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .card-title {
        font-size: 1rem;
    }
    
    .form-textarea {
        min-height: 120px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 0.5rem;
    }
    
    .ads-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    h1 { font-size: 1.35rem; }
    h2 { font-size: 1.15rem; }
    
    /* Ad Detail extra small */
    .ad-gallery-main {
        aspect-ratio: 4/3;
    }
    
    .ad-gallery-thumbs {
        padding: 0.5rem;
    }
    
    .ad-gallery-thumb {
        width: 50px;
        height: 38px;
    }
    
    .ad-info {
        padding: 0.875rem;
    }
    
    .ad-price-tag {
        font-size: 1.35rem;
    }
    
    .ad-title {
        font-size: 1.1rem;
        margin-bottom: 0.75rem;
        line-height: 1.4;
    }
    
    .ad-title-location {
        display: block;
        margin-top: 0.25rem;
        font-size: 0.8rem;
    }
    
    .ad-meta-list li {
        padding: 0.4rem 0;
        font-size: 0.85rem;
        gap: 0.5rem;
    }
    
    .seller-card {
        padding: 0.875rem;
    }
    
    .seller-avatar {
        width: 42px;
        height: 42px;
        font-size: 1.1rem;
    }
    
    .seller-name {
        font-size: 0.95rem;
    }
    
    .seller-since {
        font-size: 0.8rem;
    }
    
    .btn {
        padding: 0.65rem 1rem;
        font-size: 0.85rem;
    }
    
    .btn-lg {
        padding: 0.875rem 1.25rem;
        font-size: 0.95rem;
    }
    
    /* Breadcrumb Mobile */
    nav[aria-label="Breadcrumb"] {
        font-size: 0.8rem;
        margin-bottom: 0.75rem;
    }
    
    nav[aria-label="Breadcrumb"] ol {
        gap: 0.15rem;
    }
    
    .flex-between {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }
    
    .stat-card {
        padding: 1rem;
    }
    
    .stat-value {
        font-size: 1.5rem;
    }
    
    .stat-label {
        font-size: 0.8rem;
    }
}

/* ========================================
   Loading & Animations
   ======================================== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.3s ease;
}

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}