/*
Theme Name: 3D Models Host
Theme URI: https://3dmodelshost.com/
Author: 3D Models Host Team
Author URI: https://3dmodelshost.com/
Description: Мінімалістична тема для каталогу 3D моделей для 3D принтерів. Підтримка 8 мов через Polylang.
Version: 1.0.0
Tested up to: 6.5
Requires at least: 6.0
Requires PHP: 8.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: 3dmodels-theme
Tags: 3d-models, catalog, multilingual, responsive, grid-layout

3D Models Host Theme - Каталог безкоштовних 3D моделей для друку
*/

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

:root {
    /* Colors */
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #3b82f6;
    --color-secondary: #64748b;
    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-danger: #ef4444;

    /* Neutrals */
    --color-white: #ffffff;
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;

    /* Container */
    --container-max: 1280px;
    --container-padding: 1rem;
}

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-gray-50);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-gray-900);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--spacing-md);
}

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

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

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

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

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

.btn-secondary {
    background-color: var(--color-gray-200);
    color: var(--color-gray-700);
}

.btn-secondary:hover {
    background-color: var(--color-gray-300);
}

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

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

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
}

/* Header */
.site-header {
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-gray-200);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
    gap: var(--spacing-lg);
}

.site-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-gray-900);
}

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

.site-logo svg {
    width: 32px;
    height: 32px;
    color: var(--color-primary);
}

/* Navigation */
.main-nav ul {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.main-nav a {
    color: var(--color-gray-600);
    font-weight: 500;
    padding: var(--spacing-sm) 0;
    position: relative;
}

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

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

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

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* Language Switcher */
.language-switcher {
    position: relative;
}

.language-switcher-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-gray-100);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.language-switcher-btn:hover {
    background-color: var(--color-gray-200);
}

.language-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--spacing-xs);
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 150px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: 50;
}

.language-switcher:hover .language-dropdown,
.language-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-dropdown a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-gray-700);
    font-size: var(--font-size-sm);
}

.language-dropdown a:hover {
    background-color: var(--color-gray-50);
    color: var(--color-primary);
}

.language-dropdown a.active {
    background-color: var(--color-primary);
    color: var(--color-white);
}

/* Language name variants */
.lang-short {
    display: none;
}

.lang-full {
    display: inline;
}

/* Search Form */
.search-form {
    display: flex;
    align-items: center;
}

.search-input {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md) 0 0 var(--radius-md);
    font-size: var(--font-size-sm);
    width: 200px;
    transition: all var(--transition-fast);
}

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

.search-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-primary);
    color: var(--color-white);
    border: 1px solid var(--color-primary);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

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

/* Mobile Menu */
.mobile-menu-toggle {
    display: none;
    padding: var(--spacing-sm);
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-gray-700);
    margin: 5px 0;
    transition: all var(--transition-fast);
}

/* Main Content */
.site-main {
    flex: 1;
    padding: var(--spacing-2xl) 0;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    margin-bottom: var(--spacing-2xl);
    border-radius: var(--radius-xl);
}

.hero h1 {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.hero p {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

.hero .btn {
    margin: 0 var(--spacing-sm);
}

/* Section Headers */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.section-title {
    font-size: var(--font-size-2xl);
}

/* Models Grid */
.models-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

/* Model Card */
.model-card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

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

.model-card-image {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
    background-color: var(--color-gray-100);
}

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

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

.model-card-badge {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--color-primary);
    color: var(--color-white);
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
}

.model-card-content {
    padding: var(--spacing-lg);
}

.model-card-category {
    display: inline-block;
    font-size: var(--font-size-xs);
    color: var(--color-primary);
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-sm);
}

.model-card-title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
}

.model-card-title a {
    color: var(--color-gray-900);
}

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

.model-card-excerpt {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.model-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-gray-100);
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.model-card-meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.model-card-meta svg {
    width: 16px;
    height: 16px;
}

/* Difficulty Badges */
.difficulty-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.difficulty-easy {
    background-color: #dcfce7;
    color: #166534;
}

.difficulty-medium {
    background-color: #fef3c7;
    color: #92400e;
}

.difficulty-hard {
    background-color: #fee2e2;
    color: #991b1b;
}

/* Filters */
.filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

/* Single Model Page */
.single-model {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--spacing-2xl);
}

.model-gallery {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.model-main-image {
    aspect-ratio: 4/3;
    background-color: var(--color-gray-100);
}

.model-main-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.model-thumbnails {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    overflow-x: auto;
}

.model-thumbnail {
    width: 80px;
    height: 60px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity var(--transition-fast);
    flex-shrink: 0;
}

.model-thumbnail:hover,
.model-thumbnail.active {
    opacity: 1;
}

.model-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.model-info {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.model-title {
    margin-bottom: var(--spacing-md);
}

.model-categories {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.model-category-link {
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--color-gray-100);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.model-category-link:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.model-description {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xl);
}

.model-specs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.model-spec {
    padding: var(--spacing-md);
    background-color: var(--color-gray-50);
    border-radius: var(--radius-md);
}

.model-spec-label {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-xs);
}

.model-spec-value {
    font-weight: 600;
    color: var(--color-gray-900);
}

.download-btn {
    width: 100%;
    padding: var(--spacing-md);
    font-size: var(--font-size-lg);
}

.download-count {
    text-align: center;
    margin-top: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-2xl);
}

.pagination a,
.pagination span {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.pagination a {
    background-color: var(--color-white);
    color: var(--color-gray-700);
    border: 1px solid var(--color-gray-200);
}

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

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

/* Footer */
.site-footer {
    background-color: var(--color-gray-900);
    color: var(--color-gray-400);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

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

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.footer-logo svg {
    color: var(--color-primary);
}

.footer-description {
    font-size: var(--font-size-sm);
    line-height: 1.7;
}

.footer-title {
    color: var(--color-white);
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-lg);
}

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

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--color-gray-400);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-gray-800);
    font-size: var(--font-size-sm);
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
}

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background-color: var(--color-gray-800);
    color: var(--color-gray-400);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
}

/* 404 Page */
.error-404 {
    text-align: center;
    padding: var(--spacing-3xl) 0;
}

.error-404 h1 {
    font-size: 8rem;
    color: var(--color-gray-200);
    line-height: 1;
}

.error-404 h2 {
    margin-bottom: var(--spacing-md);
}

.error-404 p {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xl);
}

/* No Results */
.no-results {
    text-align: center;
    padding: var(--spacing-3xl);
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
}

.no-results svg {
    width: 64px;
    height: 64px;
    color: var(--color-gray-300);
    margin-bottom: var(--spacing-lg);
}

/* Share Model Page */
.share-model-page {
    max-width: 700px;
    margin: 0 auto;
    padding: var(--spacing-xl) 0;
}

.share-model-page .page-title {
    margin-bottom: var(--spacing-lg);
}

.submission-intro {
    margin-bottom: var(--spacing-xl);
    color: var(--color-gray-600);
}

.model-submission-form {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--color-gray-700);
}

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

.form-group input[type="text"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

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

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

.file-upload-wrapper {
    position: relative;
}

.file-upload-wrapper input[type="file"] {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px dashed var(--color-gray-300);
    border-radius: var(--radius-md);
    background: var(--color-gray-50);
    cursor: pointer;
}

.file-upload-wrapper input[type="file"]:hover {
    border-color: var(--color-primary);
    background: var(--color-gray-100);
}

.file-upload-info {
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.form-submit {
    margin-top: var(--spacing-xl);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

.btn-large svg {
    width: 20px;
    height: 20px;
    margin-right: var(--spacing-sm);
}

.form-note {
    margin-top: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    text-align: center;
}

/* Submission Success */
.submission-success {
    text-align: center;
    padding: var(--spacing-3xl);
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.submission-success .success-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: var(--color-success);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
}

.submission-success h2 {
    margin-bottom: var(--spacing-md);
    color: var(--color-success);
}

.submission-success p {
    margin-bottom: var(--spacing-xl);
    color: var(--color-gray-600);
}

/* Submission Error */
.submission-error {
    background: #fef2f2;
    color: var(--color-error);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    border: 1px solid #fecaca;
}

/* Login Required */
.login-required {
    text-align: center;
    padding: var(--spacing-3xl);
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.login-required h2 {
    margin-bottom: var(--spacing-md);
}

.login-required p {
    margin-bottom: var(--spacing-xl);
    color: var(--color-gray-600);
}

.auth-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

/* Responsive */
@media (max-width: 1024px) {
    .single-model {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 768px) {
    :root {
        --font-size-4xl: 1.875rem;
        --font-size-3xl: 1.5rem;
        --font-size-2xl: 1.25rem;
    }

    .header-inner {
        flex-wrap: wrap;
    }

    .main-nav {
        display: none;
        width: 100%;
        order: 3;
    }

    .main-nav.active {
        display: block;
    }

    .main-nav ul {
        flex-direction: column;
        gap: 0;
    }

    .main-nav a {
        display: block;
        padding: var(--spacing-md);
        border-top: 1px solid var(--color-gray-100);
    }

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

    .search-input {
        width: 150px;
    }

    /* Language switcher - show short names on mobile */
    .lang-short {
        display: inline;
    }

    .lang-full {
        display: none;
    }

    .language-dropdown {
        min-width: auto;
    }

    .language-dropdown a {
        padding: var(--spacing-sm) var(--spacing-md);
        justify-content: center;
    }

    .hero {
        padding: var(--spacing-2xl) var(--spacing-md);
    }

    .models-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: var(--spacing-md);
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand {
        max-width: none;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    /* Form responsive */
    .form-row {
        grid-template-columns: 1fr;
    }

    .model-submission-form {
        padding: var(--spacing-md);
    }

    .auth-buttons {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .header-actions {
        gap: var(--spacing-sm);
    }

    .search-form {
        display: none;
    }

    .models-grid {
        grid-template-columns: 1fr;
    }

    .model-specs {
        grid-template-columns: 1fr;
    }
}

/* Print Styles */
@media print {
    .site-header,
    .site-footer,
    .filters,
    .download-btn {
        display: none;
    }

    .single-model {
        grid-template-columns: 1fr;
    }
}