/* ========================================
   Premium Unsplash Gallery - Stylesheet
   ======================================== */

/* ================
   CSS Variables
   ================ */
:root {
    /* Dark Theme Colors */
    --dark-bg-primary: #0a0a0f;
    --dark-bg-secondary: #1a1a2e;
    --dark-bg-tertiary: #16213e;
    --dark-text-primary: #ffffff;
    --dark-text-secondary: #b4b4b4;
    --dark-border: rgba(255, 255, 255, 0.1);

    /* Light Theme Colors */
    --light-bg-primary: #ffffff;
    --light-bg-secondary: #f8f9fa;
    --light-bg-tertiary: #e9ecef;
    --light-text-primary: #1a1a1a;
    --light-text-secondary: #6c757d;
    --light-border: rgba(0, 0, 0, 0.1);

    /* Accent Colors */
    --accent-primary: #6c63ff;
    --accent-secondary: #8b5cf6;
    --accent-tertiary: #ec4899;
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6c63ff 0%, #8b5cf6 50%, #ec4899 100%);
    --gradient-overlay: linear-gradient(180deg, rgba(0,0,0,0) 0%, rgba(0,0,0,0.7) 100%);

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 32px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
    --shadow-xl: 0 20px 50px rgba(0,0,0,0.2);
    --shadow-glow: 0 0 20px rgba(108,99,255,0.3);

    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Display', system-ui, sans-serif;
    --font-heading: 'Poppins', 'Inter', sans-serif;

    /* Layout */
    --header-height: 80px;
    --max-width: 1400px;
}

/* ================
   Global Styles
   ================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Dark Theme (Default) */
body.dark-theme {
    background-color: var(--dark-bg-primary);
    color: var(--dark-text-primary);
}

/* Light Theme */
body.light-theme {
    background-color: var(--light-bg-primary);
    color: var(--light-text-primary);
}

/* ================
   Loading Screen
   ================ */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--dark-bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 1;
    transition: opacity var(--transition-slow);
}

.loading-screen.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-content {
    text-align: center;
}

.loader-icon {
    margin-bottom: var(--spacing-lg);
}

.loading-circle {
    transform-origin: center;
    animation: rotate 1.5s linear infinite;
}

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

.loading-text {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.loading-subtitle {
    font-size: 14px;
    color: var(--dark-text-secondary);
}

/* ================
   Scroll Progress
   ================ */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 4px;
    background: var(--gradient-primary);
    width: 0%;
    z-index: 9999;
    transition: width 0.1s ease-out;
}

/* ================
   Header
   ================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    z-index: 1000;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
}

.dark-theme .header {
    background: rgba(26, 26, 46, 0.8);
    border-bottom: 1px solid var(--dark-border);
}

.light-theme .header {
    background: rgba(255, 255, 255, 0.8);
    border-bottom: 1px solid var(--light-border);
    box-shadow: var(--shadow-sm);
}

.header-container {
    max-width: var(--max-width);
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-lg);
    gap: var(--spacing-lg);
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.logo:hover {
    transform: scale(1.05);
}

.logo-icon {
    animation: logoFloat 3s ease-in-out infinite;
}

@keyframes logoFloat {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-5px);
    }
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Search Container */
.search-container {
    position: relative;
    flex: 1;
    max-width: 500px;
}

.search-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--dark-text-secondary);
    pointer-events: none;
}

.light-theme .search-icon {
    color: var(--light-text-secondary);
}

.search-input {
    width: 100%;
    height: 48px;
    padding: 0 48px;
    border-radius: var(--radius-full);
    border: 1px solid transparent;
    font-family: var(--font-primary);
    font-size: 15px;
    transition: all var(--transition-normal);
}

.dark-theme .search-input {
    background: rgba(255, 255, 255, 0.05);
    color: var(--dark-text-primary);
}

.light-theme .search-input {
    background: var(--light-bg-secondary);
    color: var(--light-text-primary);
}

.search-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 4px rgba(108, 99, 255, 0.1);
}

.search-input::placeholder {
    color: var(--dark-text-secondary);
}

.light-theme .search-input::placeholder {
    color: var(--light-text-secondary);
}

.clear-search {
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--dark-text-secondary);
    transition: color var(--transition-fast);
}

.clear-search:hover {
    color: var(--dark-text-primary);
}

.light-theme .clear-search:hover {
    color: var(--light-text-primary);
}

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

.icon-button {
    position: relative;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.dark-theme .icon-button {
    background: rgba(255, 255, 255, 0.05);
    color: var(--dark-text-primary);
}

.light-theme .icon-button {
    background: var(--light-bg-secondary);
    color: var(--light-text-primary);
}

.icon-button:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.icon-button:active {
    transform: scale(0.95);
}

.badge {
    position: absolute;
    top: -4px;
    right: -4px;
    min-width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-tertiary);
    color: white;
    font-size: 11px;
    font-weight: 600;
    border-radius: var(--radius-full);
    padding: 0 6px;
}

.theme-icon-light {
    display: none;
}

.light-theme .theme-icon-dark {
    display: none;
}

.light-theme .theme-icon-light {
    display: block;
}

/* ================
   Hero Section
   ================ */
.hero {
    position: relative;
    height: 50vh;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: var(--header-height);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0.1;
    z-index: 0;
}

.dark-theme .hero-background {
    background: var(--gradient-primary);
    opacity: 0.15;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 0 var(--spacing-lg);
    animation: fadeInUp var(--transition-slow);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(32px, 5vw, 56px);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(16px, 2vw, 20px);
    margin-bottom: var(--spacing-xl);
}

.dark-theme .hero-subtitle {
    color: var(--dark-text-secondary);
}

.light-theme .hero-subtitle {
    color: var(--light-text-secondary);
}

.scroll-indicator {
    width: 32px;
    height: 32px;
    margin: 0 auto;
    animation: bounce 2s infinite;
    opacity: 0.6;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* ================
   Category Bar
   ================ */
.category-bar {
    position: sticky;
    top: var(--header-height);
    z-index: 999;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: var(--spacing-md) 0;
    overflow-x: auto;
    scrollbar-width: none;
}

.category-bar::-webkit-scrollbar {
    display: none;
}

.dark-theme .category-bar {
    background: rgba(26, 26, 46, 0.9);
    border-bottom: 1px solid var(--dark-border);
}

.light-theme .category-bar {
    background: rgba(255, 255, 255, 0.9);
    border-bottom: 1px solid var(--light-border);
}

.category-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    gap: var(--spacing-sm);
}

.category-pill {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    border: none;
    font-family: var(--font-primary);
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.dark-theme .category-pill {
    background: rgba(255, 255, 255, 0.05);
    color: var(--dark-text-secondary);
}

.light-theme .category-pill {
    background: var(--light-bg-secondary);
    color: var(--light-text-secondary);
}

.category-pill:hover {
    transform: translateY(-2px);
}

.dark-theme .category-pill:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--dark-text-primary);
}

.light-theme .category-pill:hover {
    background: var(--light-bg-tertiary);
    color: var(--light-text-primary);
}

.category-pill.active {
    background: var(--accent-primary);
    color: white;
    box-shadow: var(--shadow-glow);
}

/* ================
   Main Content
   ================ */
.main-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-lg);
    min-height: 60vh;
}

/* Results Info */
.results-info {
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.dark-theme .results-info {
    color: var(--dark-text-secondary);
}

.light-theme .results-info {
    color: var(--light-text-secondary);
}

/* ================
   Gallery Grid
   ================ */
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

/* Image Card */
.image-card {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-normal);
    animation: fadeIn var(--transition-slow);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.dark-theme .image-card {
    background: var(--dark-bg-secondary);
    box-shadow: var(--shadow-md);
}

.light-theme .image-card {
    background: var(--light-bg-secondary);
    box-shadow: var(--shadow-sm);
}

.image-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.image-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 125%;
    overflow: hidden;
}

.image-card img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-overlay);
    opacity: 0;
    transition: opacity var(--transition-normal);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--spacing-md);
}

.image-card:hover .image-overlay {
    opacity: 1;
}

.image-info {
    color: white;
}

.photographer-name {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.image-stats {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 14px;
    opacity: 0.9;
}

.image-stats span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.favorite-btn {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(10px);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    cursor: pointer;
    opacity: 0;
    transform: scale(0.8);
    transition: all var(--transition-fast);
    z-index: 10;
}

.image-card:hover .favorite-btn {
    opacity: 1;
    transform: scale(1);
}

.favorite-btn:hover {
    transform: scale(1.1);
    background: rgba(236, 72, 153, 0.9);
}

.favorite-btn.active {
    opacity: 1;
    background: var(--accent-tertiary);
}

.favorite-btn.active svg {
    fill: white;
}

/* Skeleton Loader */
.skeleton {
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0.05) 25%,
        rgba(255, 255, 255, 0.1) 50%,
        rgba(255, 255, 255, 0.05) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

.light-theme .skeleton {
    background: linear-gradient(
        90deg,
        rgba(0, 0, 0, 0.05) 25%,
        rgba(0, 0, 0, 0.1) 50%,
        rgba(0, 0, 0, 0.05) 75%
    );
    background-size: 200% 100%;
}

@keyframes shimmer {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* ================
   Loading Indicator
   ================ */
.loading-indicator {
    text-align: center;
    padding: var(--spacing-2xl) 0;
}

.spinner {
    width: 40px;
    height: 40px;
    margin: 0 auto var(--spacing-md);
    border: 4px solid transparent;
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ================
   Load More Button
   ================ */
.load-more-container {
    text-align: center;
    margin: var(--spacing-2xl) 0;
}

.load-more-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--accent-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.load-more-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
    background: var(--accent-secondary);
}

.load-more-btn:active {
    transform: translateY(0);
}

/* ================
   Empty State
   ================ */
.empty-state,
.error-state {
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-lg);
}

.empty-icon,
.error-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    opacity: 0.5;
}

.empty-title,
.error-title {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.empty-message,
.error-message {
    margin-bottom: var(--spacing-lg);
}

.dark-theme .empty-message,
.dark-theme .error-message {
    color: var(--dark-text-secondary);
}

.light-theme .empty-message,
.light-theme .error-message {
    color: var(--light-text-secondary);
}

.primary-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--accent-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
    background: var(--accent-secondary);
}

/* ================
   Lightbox Modal
   ================ */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    animation: fadeIn var(--transition-normal);
}

.lightbox-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(20px);
}

.lightbox-content {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
}

.lightbox-close {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    cursor: pointer;
    transition: all var(--transition-fast);
    z-index: 10;
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    cursor: pointer;
    transition: all var(--transition-fast);
    z-index: 10;
}

.lightbox-prev {
    left: var(--spacing-lg);
}

.lightbox-next {
    right: var(--spacing-lg);
}

.lightbox-nav:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-50%) scale(1.05);
}

.lightbox-image-container {
    max-width: 90vw;
    max-height: calc(90vh - 100px);
    animation: scaleIn var(--transition-normal);
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.lightbox-image {
    max-width: 100%;
    max-height: calc(90vh - 100px);
    object-fit: contain;
    border-radius: var(--radius-lg);
}

.lightbox-info {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: var(--spacing-lg);
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.lightbox-photographer {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: white;
}

.photographer-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
}

.photographer-label {
    font-size: 12px;
    opacity: 0.7;
}

.photographer-name {
    font-size: 16px;
    font-weight: 600;
    color: white;
    text-decoration: none;
    transition: opacity var(--transition-fast);
}

.photographer-name:hover {
    opacity: 0.8;
}

.lightbox-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.lightbox-action-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-family: var(--font-primary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lightbox-action-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.lightbox-download-btn {
    background: var(--accent-primary);
}

.lightbox-download-btn:hover {
    background: var(--accent-secondary);
}

/* ================
   Toast Notifications
   ================ */
.toast-container {
    position: fixed;
    top: calc(var(--header-height) + var(--spacing-lg));
    right: var(--spacing-lg);
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    min-width: 300px;
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-md);
    color: white;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    animation: slideInRight var(--transition-normal);
    box-shadow: var(--shadow-xl);
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.toast.success {
    background: rgba(16, 185, 129, 0.9);
}

.toast.error {
    background: rgba(239, 68, 68, 0.9);
}

.toast-message {
    flex: 1;
}

.toast-close {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.toast-close:hover {
    opacity: 1;
}

/* ================
   Footer
   ================ */
.footer {
    padding: var(--spacing-2xl) var(--spacing-lg);
    text-align: center;
    border-top: 1px solid var(--dark-border);
}

.dark-theme .footer {
    background: var(--dark-bg-secondary);
    border-top-color: var(--dark-border);
}

.light-theme .footer {
    background: var(--light-bg-secondary);
    border-top-color: var(--light-border);
}

.footer-content {
    max-width: var(--max-width);
    margin: 0 auto;
}

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

.dark-theme .footer-text {
    color: var(--dark-text-secondary);
}

.light-theme .footer-text {
    color: var(--light-text-secondary);
}

.footer-link {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--accent-secondary);
}

.footer-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.footer-divider {
    opacity: 0.3;
}

/* ================
   Responsive Design
   ================ */
@media (max-width: 1024px) {
    .gallery {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }

    .header-container {
        padding: 0 var(--spacing-md);
        gap: var(--spacing-md);
    }

    .logo-text {
        display: none;
    }

    .search-container {
        max-width: none;
    }

    .hero {
        height: 40vh;
        min-height: 300px;
    }

    .category-container {
        padding: 0 var(--spacing-md);
    }

    .main-content {
        padding: var(--spacing-lg) var(--spacing-md);
    }

    .gallery {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: var(--spacing-sm);
    }

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

    .lightbox-nav {
        width: 40px;
        height: 40px;
    }

    .lightbox-prev {
        left: var(--spacing-sm);
    }

    .lightbox-next {
        right: var(--spacing-sm);
    }

    .lightbox-info {
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-md);
    }

    .lightbox-actions {
        width: 100%;
        justify-content: space-between;
    }

    .lightbox-action-btn span {
        display: none;
    }

    .toast-container {
        right: var(--spacing-md);
        left: var(--spacing-md);
    }

    .toast {
        min-width: 0;
    }
}

@media (max-width: 480px) {
    .gallery {
        grid-template-columns: 1fr;
    }

    .hero-title {
        font-size: 28px;
    }

    .hero-subtitle {
        font-size: 16px;
    }
}

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

*:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* ================
   Print Styles
   ================ */
@media print {
    .header,
    .category-bar,
    .hero,
    .footer {
        display: none;
    }

    .main-content {
        padding: 0;
    }

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

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