/* ==========================================================================
   MetaTester - Modern Minimalist Design
   ========================================================================== */

/* CSS Variables */
:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-secondary: #64748b;
    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;

    --color-bg: #ffffff;
    --color-bg-secondary: #f8fafc;
    --color-bg-tertiary: #f1f5f9;

    --color-text: #1e293b;
    --color-text-secondary: #64748b;
    --color-text-muted: #94a3b8;

    --color-border: #e2e8f0;
    --color-border-dark: #cbd5e1;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;

    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Monaco, Consolas, monospace;

    --container-max: 1200px;
    --header-height: 64px;
}

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

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

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg-secondary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s;
}

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

ul, ol {
    list-style: none;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
.site-header {
    height: var(--header-height);
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.main-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-text);
}

.logo:hover {
    color: var(--color-text);
}

.logo-img {
    height: 50px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--color-text-secondary);
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-text);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width 0.2s;
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-admin-link {
    opacity: 0.6;
}

.nav-admin-link:hover {
    opacity: 1;
}

/* Navigation Links */
.nav-link,
.nav-dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* Navigation Dropdown */
.nav-dropdown {
    position: relative;
}

.nav-dropdown-toggle {
    cursor: pointer;
}

.nav-dropdown-toggle svg {
    transition: transform 0.2s;
}

.nav-dropdown:hover .nav-dropdown-toggle svg {
    transform: rotate(180deg);
}

.nav-dropdown-menu {
    position: absolute;
    top: 2.1rem;
    left: 0;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 220px;
    margin-top: 0.5rem;
    padding: 0.5rem 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
    z-index: 200;
}

.nav-dropdown:hover .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-dropdown-menu li {
    list-style: none;
}

.nav-dropdown-menu a {
    display: block;
    padding: 0.625rem 1rem;
    color: var(--color-text);
    font-weight: 400;
    font-size: 0.9rem;
    transition: background-color 0.2s;
}

.nav-dropdown-menu a:hover {
    background: var(--color-bg-secondary);
    color: var(--color-primary);
}

.nav-dropdown-menu a::after {
    display: none;
}

.nav-dropdown-divider {
    height: 1px;
    background: var(--color-border);
    margin: 0.5rem 0;
}

.nav-dropdown-all {
    font-weight: 500 !important;
    color: var(--color-primary) !important;
}

/* Mobile Category Menu */
.mobile-nav-category {
    position: relative;
}

.mobile-category-toggle {
    display: flex !important;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    cursor: pointer;
}

.mobile-category-toggle svg {
    transition: transform 0.2s;
}

.mobile-nav-category.active .mobile-category-toggle svg {
    transform: rotate(180deg);
}

.mobile-category-list {
    display: none;
    flex-direction: column;
    gap: 0;
    padding-left: 1rem;
    margin-top: 0.5rem;
}

.mobile-nav-category.active .mobile-category-list {
    display: flex;
}

.mobile-category-list a {
    padding: 0.5rem 1rem !important;
    font-size: 0.9rem;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: 0.2s;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem;
    z-index: 99;
}

.mobile-menu.active {
    display: block;
}

.mobile-nav-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.mobile-nav-links a {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--color-text);
    border-radius: var(--radius-md);
}

.mobile-nav-links a:hover {
    background: var(--color-bg-secondary);
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }
}

/* Main Content */
main {
    flex: 1;
}

main.container {
    padding: 1rem 1.5rem 3rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-text);
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.375rem; }
h4 { font-size: 1.125rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.875rem; }

p {
    margin-bottom: 1rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

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

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

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

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

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

.btn-danger {
    background: var(--color-danger);
    color: #fff;
}

.btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

/* Cards */
.card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: box-shadow 0.2s;
}

.card:hover {
    box-shadow: var(--shadow-md);
}

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

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

.card-body {
    padding: 1.25rem;
}

.card-title {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.card-text {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

/* Product Cards */
.product-card {
    position: relative;
}

.product-rating {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
}

.product-rating.excellent { color: var(--color-success); }
.product-rating.good { color: var(--color-primary); }
.product-rating.average { color: var(--color-warning); }
.product-rating.poor { color: var(--color-danger); }

.product-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    padding: 0.25rem 0.75rem;
    background: var(--color-primary);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
}

.product-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
}

.product-price-old {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    text-decoration: line-through;
}

/* Grid Layouts */
.grid {
    display: grid;
    gap: 1.5rem;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 992px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 576px) {
    .grid-4,
    .grid-3,
    .grid-2 { grid-template-columns: 1fr; }
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--color-text);
}

.form-control {
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-size: 1rem;
    font-family: inherit;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    transition: border-color 0.2s, box-shadow 0.2s;
}

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

.form-control::placeholder {
    color: var(--color-text-muted);
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

select.form-control {
    cursor: pointer;
}

.form-hint {
    margin-top: 0.25rem;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.form-error {
    margin-top: 0.25rem;
    font-size: 0.8125rem;
    color: var(--color-danger);
}

/* Alerts */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
}

.alert-success {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #bbf7d0;
}

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

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

.alert-info {
    background: #eff6ff;
    color: #1e40af;
    border: 1px solid #bfdbfe;
}

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

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

.table th,
.table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.table th {
    font-weight: 600;
    background: var(--color-bg-secondary);
}

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

/* Star Rating */
.stars {
    display: inline-flex;
    gap: 2px;
    color: #fbbf24;
}

.stars svg {
    width: 16px;
    height: 16px;
}

.stars .empty {
    color: var(--color-border-dark);
}

/* Progress Bars */
.progress {
    height: 8px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--color-primary);
    transition: width 0.3s;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    background: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
}

.badge-primary {
    background: rgba(37, 99, 235, 0.1);
    color: var(--color-primary);
}

.badge-success {
    background: rgba(34, 197, 94, 0.1);
    color: var(--color-success);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-danger);
}

/* Sections */
.section {
    padding: 3rem 0;
}

.section-header {
    margin-bottom: 2rem;
}

.section-title {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.section-subtitle {
    color: var(--color-text-secondary);
}

/* Hero Section */
.hero {
    padding: 4rem 0;
    text-align: center;
    background: linear-gradient(to bottom, var(--color-bg-secondary), var(--color-bg));
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto 2rem;
}

@media (max-width: 768px) {
    .hero {
        padding: 2rem 0;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .hero p {
        font-size: 1rem;
    }
}

/* Footer */
.site-footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: 3rem 0 1.5rem;
    margin-top: auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-col h4 {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
    color: var(--color-text);
}

.footer-col p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-col a {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.footer-col a:hover {
    color: var(--color-primary);
}

.share-links {
    display: flex;
    gap: 0.5rem;
}

.share-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.share-link:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

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

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: 0.5rem;
}

.affiliate-notice {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

/* Error Pages */
.error-page {
    text-align: center;
    padding: 4rem 1rem;
}

.error-page h1 {
    font-size: 6rem;
    color: var(--color-primary);
    line-height: 1;
}

.error-page h2 {
    font-size: 1.5rem;
    margin: 1rem 0;
}

.error-page p {
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
}

.error-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Utilities */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--color-text-muted); }
.text-small { font-size: 0.875rem; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

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

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Breadcrumb Navigation */
.breadcrumb-nav {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: var(--color-bg-secondary);
    border-radius: 8px;
    margin-bottom: 2rem;
    font-size: 0.875rem;
}

.breadcrumb-link {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    color: #007bff;
    text-decoration: none;
    transition: color 0.15s;
}

.breadcrumb-link:hover {
    color: #0056b3;
    text-decoration: underline;
}

.breadcrumb-sep {
    color: var(--color-text-secondary);
    opacity: 0.5;
    flex-shrink: 0;
}

.breadcrumb-current {
    color: var(--color-text-secondary);
    font-weight: 500;
}

/* ==========================================================================
   Pagination
   ========================================================================== */

.pagination-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 2.5rem;
    padding: 1rem 0;
}

.pagination-btn {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    background: var(--color-bg);
    color: var(--color-text);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
}

.pagination-btn:hover:not(.disabled) {
    border-color: #007bff;
    color: #007bff;
    background: rgba(0, 123, 255, 0.05);
}

.pagination-btn.disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.pagination-pages {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    margin: 0 0.5rem;
}

.pagination-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 0.5rem;
    border: 1px solid transparent;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    color: var(--color-text);
    transition: all 0.2s;
}

.pagination-page:hover:not(.active) {
    background: var(--color-bg-secondary);
    border-color: var(--color-border);
}

.pagination-page.active {
    background: #007bff;
    color: #fff;
    border-color: #007bff;
}

.pagination-ellipsis {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

@media (max-width: 768px) {
    .pagination-nav {
        flex-wrap: wrap;
    }

    .pagination-btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.8rem;
    }

    .pagination-page {
        min-width: 32px;
        height: 32px;
        font-size: 0.8rem;
    }
}

/* ==========================================================================
   Guide Cards
   ========================================================================== */

.guide-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.guide-card {
    display: flex;
    flex-direction: column;
    border-radius: 12px;
    overflow: hidden;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    text-decoration: none;
    color: var(--color-text);
    transition: transform 0.2s, box-shadow 0.2s;
}

.guide-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}

.guide-card-image {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: #ffffff;
}

.guide-card-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
}

.guide-card-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: flex-end;
    padding: 1.25rem;
    background: linear-gradient(to top, rgba(15, 23, 42, 0.85) 0%, rgba(15, 23, 42, 0.3) 60%, transparent 100%);
}

.guide-card-title {
    color: #fff;
    font-size: 1.05rem;
    font-weight: 700;
    line-height: 1.35;
    margin: 0;
    text-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.guide-card-body {
    padding: 1rem 1.25rem 1.25rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.guide-card-excerpt {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
    margin: 0 0 auto;
}

.guide-card-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--color-border);
    font-size: 0.775rem;
    color: var(--color-text-muted);
}

@media (max-width: 1024px) {
    .guide-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .guide-grid { grid-template-columns: 1fr; }
    .guide-card-title { font-size: 1rem; }
}