/* Base Styles */
:root {
    --primary: #3b82f6;
    --primary-light: #60a5fa;
    --text: #1e293b;
    --text-light: #64748b;
    --bg: #f8fafc;
    --card-bg: #ffffff;
    --header-bg: rgba(255, 255, 255, 0.3);
    --overlay: rgba(0, 0, 0, 0.95);
    --shadow: 0 4px 30px rgba(0, 0, 0, 0.08);
    --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --border-radius: 16px;
}

[data-theme="dark"] {
    --primary: #60a5fa;
    --primary-light: #93c5fd;
    --text: #f1f5f9;
    --text-light: #94a3b8;
    --bg: #0f172a;
    --card-bg: #1e293b;
    --header-bg: rgba(15, 23, 42, 0.3);
    --overlay: rgba(0, 0, 0, 0.98);
    --shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Loading Screen */
.loader-wrapper {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

.loader-wrapper.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader {
    width: 80px;
    height: 80px;
    position: relative;
}

.camera-icon {
    position: absolute;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2.5rem;
    color: var(--primary);
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    background-color: var(--header-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 100;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.logo {
    display: flex;
    align-items: center;
    font-weight: 700;
    font-size: 1.8rem;
    letter-spacing: 1px;
}

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

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

/* Theme Toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    cursor: pointer;
}

.toggle-track {
    width: 60px;
    height: 30px;
    background-color: var(--text-light);
    border-radius: 15px;
    padding: 3px;
    position: relative;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

[data-theme="dark"] .toggle-track {
    background-color: var(--primary-light);
}

.toggle-thumb {
    width: 24px;
    height: 24px;
    background-color: var(--card-bg);
    border-radius: 50%;
    position: absolute;
    left: 4px;
    transition: var(--transition);
    z-index: 2;
}

[data-theme="dark"] .toggle-thumb {
    left: calc(100% - 27px);
}

.toggle-track i {
    font-size: 0.9rem;
    padding: 0 6px;
    color: var(--card-bg);
    z-index: 1;
}

/* Navigation */
.main-nav {
    position: fixed;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    background-color: var(--header-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 0.75rem;
    border-radius: 2rem;
    box-shadow: var(--shadow);
    z-index: 100;
    gap: 0.5rem;
    transition: var(--transition);
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 2rem;
    background-color: transparent;
    color: var(--text-light);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.nav-btn i {
    font-size: 1.1rem;
}

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

/* Main Content */
.main-content {
    padding: 7rem 2rem 6rem;
    max-width: 1400px;
    margin: 0 auto;
}

.gallery-section, .albums-section {
    display: none;
    animation: fadeIn 0.6s ease forwards;
}

.gallery-section.active-section, .albums-section.active-section {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Gallery Grid */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
}

.gallery-item {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: 1/1;
    background-color: var(--card-bg);
    box-shadow: var(--shadow);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
}

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

.gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.gallery-item img, 
.gallery-item video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease, filter 0.5s ease;
}

.gallery-item:hover img,
.gallery-item:hover video {
    transform: scale(1.05);
}

/* Albums Grid */
.albums-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.album-card {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: 4/3;
    background-color: var(--card-bg);
    box-shadow: var(--shadow);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
    text-decoration: none;
    color: inherit;
}

.album-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.album-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: filter 0.5s ease;
}

.album-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1.5rem;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
}

.album-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.album-count {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Image Viewer */
.image-viewer {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--overlay);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

.image-viewer.active {
    opacity: 1;
    pointer-events: all;
}

.viewer-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    animation: scaleUp 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

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

.viewer-content img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 0.5rem;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
}

.close-btn {
    position: absolute;
    top: -50px;
    right: 0;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.close-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(90deg);
}

.close-btn i {
    font-size: 1.2rem;
}

/* Video Player Modal */
.video-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--overlay);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

.video-modal.active {
    opacity: 1;
    pointer-events: all;
}

.video-modal-content {
    position: relative;
    width: 90%;
    max-width: 1000px;
    animation: scaleUp 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.video-modal video {
    width: 100%;
    max-height: 80vh;
    border-radius: var(--border-radius);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
}

.video-meta {
    padding: 1rem;
    text-align: center;
    color: white;
}

.video-title {
    font-size: 1.4rem;
    font-weight: 600;
}

/* Video play button */
.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background-color: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    transition: var(--transition);
    z-index: 2;
}

.gallery-item:hover .play-button {
    background-color: var(--primary);
    transform: translate(-50%, -50%) scale(1.1);
}

/* Media loader */
.media-loader {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.5);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1;
}

[data-theme="dark"] .media-loader {
    background-color: rgba(0, 0, 0, 0.5);
}

.media-loader::after {
    content: "";
    width: 40px;
    height: 40px;
    border: 4px solid var(--primary);
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 1s linear infinite;
}

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

.hidden {
    display: none;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    }
    
    .albums-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
}

@media (max-width: 768px) {
    .header {
        padding: 1.2rem;
    }
    
    .main-content {
        padding: 6rem 1.5rem 6rem;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
        gap: 1rem;
    }
    
    .albums-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 1.5rem;
    }
    
    .nav-btn span {
        display: none;
    }
    
    .nav-btn {
        padding: 0.75rem;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 1rem;
    }
    
    .logo {
        font-size: 1.5rem;
    }
    
    .main-content {
        padding: 5rem 1rem 6rem;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
    
    .albums-grid {
        grid-template-columns: 1fr;
    }
    
    .main-nav {
        bottom: 1rem;
    }
    
    .toggle-track {
        width: 50px;
        height: 26px;
    }
    
    .toggle-thumb {
        width: 20px;
        height: 20px;
    }
    
    [data-theme="dark"] .toggle-thumb {
        left: calc(100% - 23px);
    }
}