/* CSS Variables for Theming */
:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #151923;
    --text-primary: #e8eaed;
    --text-secondary: #9aa0a6;
    --border-color: #2d3548;
    --shadow-color: rgba(0,0,0,0.4);
    --accent-color: #7c5cde;
    --accent-hover: #9b7fef;
}

/* Main Styles - Mobile First Approach */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    background: var(--bg-primary);
}

/* Touch-friendly button sizing */
button, .btn, .nav-link {
    min-height: 44px; /* iOS recommended touch target */
    min-width: 44px;
}

/* Header */
.header {
    background: url('../img/site-header.png') center center / cover no-repeat;
    color: white;
    padding: 0;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    position: relative;
    overflow: hidden;
    min-height: 200px;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.1);
    z-index: 0;
}

.header h1 {
    display: none;
}

.header p {
    display: none;
}

/* Tablet and up */
@media (min-width: 768px) {
    .header {
        min-height: 300px;
    }

    .header h1 {
        font-size: 3em;
        margin-bottom: 12px;
        padding: 40px 30px 10px;
    }

    .header p {
        font-size: 1.2em;
        padding: 0 30px 40px;
    }
}

/* Navigation - Mobile First */
.nav {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    padding: 15px 20px;
    background: var(--bg-secondary);
    border-bottom: 2px solid var(--border-color);
    gap: 12px;
    position: sticky;
    top: 0;
    z-index: 999;
    box-shadow: 0 2px 15px var(--shadow-color);
}

/* Hamburger Menu Button */
.hamburger-menu {
    display: block;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1000;
    align-self: flex-start;
}

.hamburger-menu span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 5px 0;
    transition: 0.3s;
    border-radius: 2px;
}

.hamburger-menu.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

.hamburger-menu.active span:nth-child(2) {
    opacity: 0;
}

.hamburger-menu.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

/* Mobile: Hide nav items by default, show when menu is open */
.nav-left,
.nav-right {
    display: none;
    flex-direction: column;
    gap: 8px;
    align-items: stretch;
}

.nav.mobile-open .nav-left,
.nav.mobile-open .nav-right {
    display: flex;
}

/* Language Selector */
.language-select {
    padding: 8px 12px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
    background: var(--bg-primary);
    color: var(--text-primary);
    cursor: pointer;
    transition: border-color 0.3s ease;
    min-height: 44px;
}

.language-select:hover {
    border-color: var(--accent-color);
}

.language-select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(124, 92, 222, 0.2);
}

/* Tablet and up */
@media (min-width: 768px) {
    /* Hide hamburger menu on desktop */
    .hamburger-menu {
        display: none;
    }
    
    /* Always show nav items on desktop */
    .nav-left,
    .nav-right {
        display: flex !important;
    }
    
    .nav {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        padding: 15px 20px;
        gap: 20px;
    }
    
    .nav-left,
    .nav-right {
        flex-direction: row;
        gap: 15px;
        align-items: center;
        width: auto;
    }
}

.nav-link {
    padding: 12px 20px;
    border-radius: 10px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    border: 2px solid transparent;
    transition: all 0.3s ease;
    cursor: pointer;
    text-align: center;
    font-size: 15px;
}

/* Dynamic UI based on login state */
body.logged-out .user-is-logged-in {
    display: none !important;
}

body.logged-in .user-is-logged-out {
    display: none !important;
}


.nav-link:hover {
    background: rgba(124, 92, 222, 0.15);
    color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(124, 92, 222, 0.3);
}

.nav-link.active {
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-hover) 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.search-input {
    padding: 12px 20px;
    border: 2px solid var(--border-color);
    border-radius: 25px;
    width: 100%;
    font-size: 14px;
    transition: all 0.3s ease;
    background: var(--bg-primary);
    font-weight: 500;
    color: var(--text-primary);
}

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

/* Tablet and up */
@media (min-width: 768px) {
    .search-input {
        width: 300px;
    }
}

.username-display {
    font-weight: 700;
    color: var(--text-primary);
    margin-right: 12px;
    padding: 8px 16px;
    background: rgba(124, 92, 222, 0.15);
    border-radius: 20px;
    font-size: 14px;
    border: 2px solid var(--border-color);
}

.search-input:hover {
    background: var(--bg-secondary);
    border-color: var(--text-secondary);
}

.search-input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 4px rgba(124, 92, 222, 0.2);
    background: var(--bg-secondary);
}

/* Main Content - Mobile First */
.main-content {
    padding: 25px 20px;
    min-height: calc(100vh - 200px);
    background: var(--bg-primary);
}

#gallery-view,
#upload-view,
#folders-view,
#login-view,
#register-view,
#settings-view,
#admin-view {
    background: var(--bg-secondary);
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 4px 20px var(--shadow-color);
    border: 1px solid var(--border-color);
}

@media (max-width: 768px) {
    #gallery-view,
    #upload-view,
    #folders-view,
    #login-view,
    #register-view,
    #settings-view,
    #admin-view {
        padding: 20px;
    }
}

@media (min-width: 768px) {
    .main-content {
        padding: 20px;
    }
    
    #gallery-view,
    #upload-view,
    #folders-view,
    #login-view,
    #register-view {
        padding: 25px;
    }
}

.view {
    display: none;
}

.view.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

/* Gallery Header */
.gallery-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding: 20px;
    background: rgba(124, 92, 222, 0.1);
    border-radius: 16px;
    box-shadow: 0 4px 15px var(--shadow-color);
    flex-wrap: wrap;
    gap: 18px;
    border: 1px solid var(--border-color);
}

.gallery-header h2 {
    font-size: 1.8em;
    margin: 0;
    color: var(--text-primary);
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-hover) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@media (max-width: 768px) {
    .gallery-header {
        flex-direction: column;
        align-items: stretch;
    }

    .gallery-header h2 {
        font-size: 1.5em;
    }
}

.gallery-filters {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.folder-filter {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 15px;
    background: var(--bg-primary);
    border-radius: 10px;
    box-shadow: 0 2px 6px var(--shadow-color);
}

.folder-filter label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 14px;
}

.folder-filter select {
    padding: 10px 14px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-weight: 500;
    transition: all 0.3s ease;
    min-width: 150px;
}

.folder-filter select:hover {
    border-color: var(--accent-color);
}

.folder-filter select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(124, 92, 222, 0.2);
}

.media-type-filter {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 15px;
    background: var(--bg-primary);
    border-radius: 10px;
    box-shadow: 0 2px 6px var(--shadow-color);
}

.media-type-filter label {
    font-weight: 600;
    font-size: 14px;
    color: var(--text-primary);
}

.filter-buttons {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 20px;
    border: 2px solid var(--border-color);
    border-radius: 20px;
    background: var(--bg-secondary);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-primary);
}

.filter-btn:hover {
    border-color: var(--accent-color);
    background: rgba(124, 92, 222, 0.15);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(124, 92, 222, 0.3);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-hover) 100%);
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(124, 92, 222, 0.4);
}

@media (max-width: 768px) {
    .media-type-filter,
    .folder-filter {
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
    }

    .filter-buttons {
        width: 100%;
        justify-content: stretch;
    }

    .filter-btn {
        flex: 1;
        text-align: center;
    }
}

/* Gallery Grid */
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

@media (max-width: 480px) {
    .gallery {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 15px;
    }
}

@media (min-width: 1200px) {
    .gallery {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

.gallery-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.gallery-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.gallery-item.is-video::after {
    content: '▶️';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 48px;
    opacity: 0.8;
    pointer-events: none;
}

.video-indicator {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(0,0,0,0.8);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: bold;
    z-index: 2;
}

/* Upload Container */
.upload-container {
    max-width: 800px;
    margin: 0 auto;
}

.upload-container h2 {
    font-size: 1.6em;
    margin-bottom: 20px;
    color: #667eea;
}

/* Upload Form */
.upload-form {
    max-width: 100%;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 700;
    color: #495057;
    font-size: 15px;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 14px;
    font-family: inherit;
    transition: all 0.3s ease;
    background: var(--bg-primary);
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input:hover,
.form-group textarea:hover,
.form-group select:hover {
    background: var(--bg-secondary);
    border-color: var(--text-secondary);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 4px rgba(124, 92, 222, 0.2);
    background: var(--bg-secondary);
}

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

.form-group small {
    display: block;
    margin-top: 8px;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
}

/* File Input Styling */
.file-input-wrapper {
    position: relative;
    display: inline-block;
    width: 100%;
    cursor: pointer;
    background: rgba(124, 92, 222, 0.1);
    border: 3px dashed var(--accent-color);
    border-radius: 16px;
    padding: 40px 20px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px var(--shadow-color);
}

.file-input-wrapper:hover {
    background: rgba(124, 92, 222, 0.2);
    border-color: var(--accent-hover);
    transform: translateY(-4px);
    box-shadow: 0 6px 20px rgba(124, 92, 222, 0.3);
}

.file-input-wrapper.dragover {
    background: rgba(124, 92, 222, 0.25);
    border-color: var(--accent-hover);
    border-width: 4px;
    box-shadow: 0 8px 25px rgba(124, 92, 222, 0.4);
    transform: scale(1.02);
}

.file-input-wrapper input[type="file"] {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
    top: 0;
    left: 0;
}

.file-name {
    display: block;
    color: var(--accent-hover);
    font-weight: 600;
    font-size: 14px;
}

.file-input-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    pointer-events: none;
    color: var(--accent-hover);
}

.file-input-display svg {
    width: 32px;
    height: 32px;
    color: var(--accent-hover);
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-transform: none;
    letter-spacing: 0.3px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-hover) 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(124, 92, 222, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(124, 92, 222, 0.5);
    background: linear-gradient(135deg, var(--accent-hover) 0%, #b49dff 100%);
}

.btn-primary:active {
    transform: translateY(-1px);
    box-shadow: 0 3px 10px rgba(102, 126, 234, 0.3);
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    box-shadow: 0 2px 8px var(--shadow-color);
}

.btn-secondary:hover {
    background: var(--bg-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-color);
    border-color: var(--accent-color);
}

.btn-danger {
    background: linear-gradient(135deg, #f44336 0%, #d32f2f 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(244, 67, 54, 0.3);
}

.btn-danger:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(244, 67, 54, 0.4);
    background: linear-gradient(135deg, #e53935 0%, #c62828 100%);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

/* Folders Management */
.folders-container {
    max-width: 900px;
    margin: 0 auto;
}

.folders-container h2 {
    font-size: 1.6em;
    margin-bottom: 20px;
    color: var(--accent-hover);
}

.create-folder {
    margin-bottom: 25px;
    padding: 20px;
    background: rgba(124, 92, 222, 0.1);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    border: 1px solid var(--border-color);
}

@media (min-width: 768px) {
    .create-folder {
        flex-direction: row;
        align-items: center;
    }
}

/* Auth Forms */
.auth-container {
    max-width: 480px;
    margin: 0 auto;
    padding: 40px;
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.15);
    border: 1px solid #e9ecef;
}

.auth-container h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #212529;
    font-size: 2em;
    font-weight: 800;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.auth-status {
    margin-top: 20px;
    padding: 15px 20px;
    border-radius: 12px;
    text-align: center;
    font-weight: 600;
    font-size: 14px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.auth-status.success {
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    color: #155724;
    border: 2px solid #28a745;
}

.auth-status.error {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    color: #721c24;
    border: 2px solid #dc3545;
}

/* OAuth Styles */
.oauth-separator {
    position: relative;
    text-align: center;
    margin: 25px 0;
}

.oauth-separator::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: #ddd;
}

.oauth-separator span {
    position: relative;
    display: inline-block;
    background: #fff;
    padding: 0 15px;
    color: #888;
    font-size: 14px;
    font-weight: 500;
}

.oauth-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.oauth-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 12px 20px;
    border: 1px solid #ddd;
    border-radius: 6px;
    background: white;
    color: #333;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: 44px;
}

.oauth-btn:hover {
    background: #f8f9fa;
    border-color: #bbb;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.oauth-btn:active {
    transform: translateY(0);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.oauth-btn svg {
    flex-shrink: 0;
}

.oauth-google:hover {
    background: #f8f9ff;
    border-color: #4285F4;
}

.oauth-facebook:hover {
    background: #f0f7ff;
    border-color: #1877F2;
}

.oauth-github:hover {
    background: #f6f8fa;
    border-color: #333;
}

.oauth-microsoft:hover {
    background: #fff9f0;
    border-color: #ffba08;
}


/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-top: 40px;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: 16px;
    box-shadow: 0 4px 15px var(--shadow-color);
    border: 1px solid var(--border-color);
}

.pagination button {
    min-width: 100px;
}

.pagination #pageInfo {
    font-weight: 700;
    color: var(--text-primary);
    font-size: 15px;
    padding: 10px 20px;
    background: rgba(124, 92, 222, 0.15);
    border-radius: 10px;
    border: 2px solid var(--border-color);
}

/* Loading Spinner */
.spinner {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 9999;
}

.spinner.active {
    display: block;
}

.spinner-inner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-color);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Add spacing for the lock icon */
.aspect-ratio-lock {
    margin-left: 4px;
}

/* Vertically align aspect ratio lock icons */
.aspect-ratio-lock svg {
    margin-bottom: -4px;
}

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

/* Modal Tool Section Layout */
.modal-tools .tool-section {
    display: flex;
    align-items: center;
    gap: 10px; /* Space between label, input group, and button */
    margin-bottom: 15px;
}

.modal-tools .tool-section .input-group {
    display: flex;
    align-items: center;
    flex-grow: 1; /* Allow input group to take available space */
    justify-content: space-between; /* Push icon to the right */
}

.modal-tools .tool-section .input-group .input-fields {
    display: flex;
    gap: 5px; /* Space between width and height inputs */
}

/* Modal Share Section */
.modal-share-section {
    margin-top: 20px;
    margin-bottom: 20px;
    padding: 20px;
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    border-radius: 12px;
    border: 1px solid #90caf9;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.share-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    color: #1565c0;
}

.share-label input[type="checkbox"] {
    margin-right: 12px;
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: #1976d2;
}

.share-label .share-text {
    font-size: 15px;
}

.modal-share-section small {
    display: block;
    margin-top: 8px;
    color: #1565c0;
    font-size: 13px;
}

/* Gallery Item Folder Label */
.gallery-item-folder-label {
    position: absolute;
    top: 8px;
    left: 8px;
    background-color: rgba(102, 126, 234, 0.85); /* Semi-transparent primary color */
    color: white;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    z-index: 2;
    text-transform: capitalize;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

/* Gallery Item Overlay Buttons */
.gallery-item-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    padding: 15px 10px 10px;
    opacity: 0;
    transition: opacity 0.2s ease;
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
    justify-content: center;
    z-index: 3;
}

.gallery-item:hover .gallery-item-overlay {
    opacity: 1;
}

.gallery-item-overlay .btn {
    font-size: 11px;
    padding: 6px 10px;
    white-space: nowrap;
    background: rgba(255,255,255,0.95);
    border: none;
}

.gallery-item-overlay .btn:hover {
    background: white;
}

.gallery-item-overlay .btn-danger {
    background: rgba(220, 53, 69, 0.95);
    color: white;
}

.gallery-item-overlay .btn-danger:hover {
    background: rgb(200, 35, 51);
}

.gallery-item-overlay .btn-design {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
}

.gallery-item-overlay .btn-design:hover {
    background: linear-gradient(135deg, #5568d3 0%, #63398b 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

@media (max-width: 768px) {
    .gallery-item-overlay {
        opacity: 1; /* Always show on mobile */
        background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
    }
}

/* Settings Page Styles - Modern & Clean */
.settings-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 30px 20px;
}

.settings-container > h2 {
    color: #1a1a1a;
    margin-bottom: 30px;
    font-size: 2em;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 12px;
}

.settings-container > h2::before {
    content: "⚙️";
    font-size: 0.9em;
}

/* Setting Section Cards */
.setting-section {
    background: white;
    border: none;
    border-radius: 12px;
    padding: 0;
    margin-bottom: 24px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    transition: box-shadow 0.3s ease;
}

.setting-section:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.setting-section h3 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    margin: 0;
    padding: 18px 25px;
    font-size: 1.1em;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.setting-content {
    padding: 25px;
}

/* Profile Info Grid */
.profile-info {
    display: grid;
    gap: 16px;
}

.profile-info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 18px;
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 3px solid #667eea;
    transition: background 0.2s ease;
}

.profile-info-item:hover {
    background: #e9ecef;
}

.info-label {
    font-weight: 600;
    color: #495057;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.info-value {
    color: #212529;
    font-size: 14px;
    font-weight: 500;
    text-align: right;
}

/* Forms */
.setting-content form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.form-group {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #212529;
    font-size: 14px;
}

.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="text"],
.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.3s ease;
    background: white;
}

.form-group input:focus,
.form-control:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* Buttons */
.setting-content .btn {
    padding: 12px 24px;
    font-weight: 600;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.setting-content .btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
}

.setting-content .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.setting-content .btn-danger {
    background: linear-gradient(135deg, #f56565 0%, #c53030 100%);
    border: none;
}

.setting-content .btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(245, 101, 101, 0.4);
}

.setting-content .btn-secondary {
    background: #6c757d;
    border: none;
    color: white;
}

.setting-content .btn-secondary:hover {
    background: #5a6268;
}

.form-status {
    margin-top: 12px;
    padding: 10px 12px;
    border-radius: 4px;
    font-size: 13px;
    display: none;
}

.form-status.success,
.form-status.error {
    display: block;
}

.form-status.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-status.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
}

.stat-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 24px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
    transition: transform 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-4px);
}

.stat-value {
    font-size: 2.5em;
    font-weight: 700;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 0.9em;
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.danger-zone {
    border: 2px solid #dc3545 !important;
    background: #fff5f5 !important;
}

.danger-zone h3 {
    color: #dc3545 !important;
}

.danger-zone p {
    color: #666;
    margin: 10px 0 15px 0;
    background: white;
    padding: 15px;
    border-radius: 6px;
    font-size: 14px;
    border-left: 4px solid #dc3545;
}

.btn-danger {
    background-color: #f44336;
    color: white;
    border: none;
}

.btn-danger:hover {
    background-color: #da190b;
}

/* Admin Dashboard Styles */
.admin-container {
    max-width: 1200px;
    margin: 0 auto;
}

.admin-section {
    background: white;
    padding: 25px;
    margin-bottom: 25px;
    border-radius: 8px;
    border: 1px solid #e0e0e0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.admin-section h3 {
    color: #333;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid #667eea;
    font-size: 18px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 15px;
}

.stat-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 15px;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.stat-icon {
    font-size: 32px;
    opacity: 0.9;
}

.stat-content {
    flex: 1;
}

.stat-label {
    font-size: 13px;
    opacity: 0.9;
    margin-bottom: 5px;
}

.stat-value {
    font-size: 28px;
    font-weight: 600;
}

.stat-change {
    font-size: 12px;
    opacity: 0.8;
    margin-top: 5px;
}

/* Analytics Dashboard */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.chart-container {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    border: 1px solid #e0e0e0;
}

.chart-container h4 {
    margin: 0 0 15px 0;
    color: #333;
    font-size: 16px;
}

.chart-container canvas {
    max-height: 250px;
}

.chart-summary {
    display: flex;
    justify-content: space-around;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid #dee2e6;
    font-size: 13px;
    color: #666;
}

.chart-summary strong {
    color: #333;
    font-weight: 600;
}

.analytics-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.analytics-box {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    border: 1px solid #e0e0e0;
}

.analytics-box h5 {
    margin: 0 0 15px 0;
    color: #333;
    font-size: 15px;
}

.analytics-grid {
    display: grid;
    gap: 12px;
}

.analytics-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid #dee2e6;
}

.analytics-item:last-child {
    border-bottom: none;
}

.analytics-item .label {
    color: #666;
    font-size: 13px;
}

.analytics-item .value {
    color: #333;
    font-weight: 600;
    font-size: 13px;
}

.top-users-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.top-user-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px;
    background: white;
    border-radius: 6px;
    border: 1px solid #e0e0e0;
}

.top-user-rank {
    font-weight: 600;
    color: #667eea;
    width: 30px;
}

.top-user-name {
    flex: 1;
    font-size: 14px;
}

.top-user-count {
    font-weight: 600;
    color: #666;
    font-size: 13px;
}

.peak-times-heatmap {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 5px;
}

.heatmap-cell {
    aspect-ratio: 1;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    cursor: pointer;
    transition: transform 0.2s;
}

.heatmap-cell:hover {
    transform: scale(1.1);
}

/* System Health */
.health-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.health-card {
    background: #f8f9fa;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    overflow: hidden;
}

.health-header {
    background: white;
    padding: 15px;
    border-bottom: 1px solid #e0e0e0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.health-header h4 {
    margin: 0;
    font-size: 15px;
    color: #333;
}

.health-badge {
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.health-badge.healthy {
    background: #d4edda;
    color: #155724;
}

.health-badge.warning {
    background: #fff3cd;
    color: #856404;
}

.health-badge.critical {
    background: #f8d7da;
    color: #721c24;
}

.health-metrics {
    padding: 15px;
}

.metric {
    margin-bottom: 15px;
}

.metric:last-of-type {
    margin-bottom: 0;
}

.metric-label {
    display: block;
    font-size: 13px;
    color: #666;
    margin-bottom: 5px;
}

.metric-bar {
    height: 8px;
    background: #e9ecef;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 5px;
}

.metric-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    transition: width 0.5s ease;
}

.metric-fill.warning {
    background: linear-gradient(90deg, #ffc107 0%, #ff9800 100%);
}

.metric-fill.critical {
    background: linear-gradient(90deg, #dc3545 0%, #c82333 100%);
}

.metric-value {
    font-size: 12px;
    color: #333;
    font-weight: 600;
}

.metric-info {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 13px;
    color: #666;
}

.metric-info strong {
    color: #333;
    font-weight: 600;
}

.error-summary {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 15px;
}

.error-stat {
    text-align: center;
}

.error-count {
    display: block;
    font-size: 32px;
    font-weight: 600;
    color: #dc3545;
    margin-bottom: 5px;
}

.error-count.warning {
    color: #ffc107;
}

.error-label {
    font-size: 12px;
    color: #666;
}

/* Real-time Monitoring */
.realtime-monitor {
    margin-top: 20px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 8px;
    border: 1px solid #e0e0e0;
}

.realtime-monitor h4 {
    margin: 0 0 15px 0;
    color: #333;
    font-size: 16px;
}

.monitor-toggle {
    margin-bottom: 15px;
}

.monitor-toggle label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: #666;
    cursor: pointer;
}

.realtime-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.realtime-item {
    background: white;
    padding: 15px;
    border-radius: 6px;
    border: 1px solid #e0e0e0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.realtime-label {
    font-size: 12px;
    color: #666;
    text-align: center;
}

.realtime-value {
    font-size: 24px;
    font-weight: 600;
    color: #667eea;
}

/* Button variations */
.btn.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

/* Info Boxes */
.info-box {
    padding: 15px;
    border-radius: 6px;
    margin-top: 20px;
}

.info-warning {
    background: #fff3cd;
    border: 1px solid #ffc107;
    color: #856404;
}

.info-box strong {
    display: block;
    margin-bottom: 5px;
}

/* OAuth Providers */
.oauth-providers-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
}

@media (min-width: 768px) {
    .oauth-providers-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

.provider-card {
    background: #f8f9fa;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.provider-header {
    display: flex;
    align-items: center;
    gap: 12px;
}

.provider-header h4 {
    margin: 0;
    font-size: 18px;
    color: #333;
}

.provider-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.provider-status {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 13px;
    font-weight: 500;
}

.provider-status.status-enabled {
    background: #d4edda;
    color: #155724;
}

.provider-status.status-disabled {
    background: #f8d7da;
    color: #721c24;
}

.provider-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* Users Management */
.users-list {
    overflow-x: auto;
}

.users-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.users-table thead {
    background: #f8f9fa;
    border-bottom: 2px solid #dee2e6;
}

.users-table th,
.users-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #e9ecef;
}

.users-table th {
    font-weight: 600;
    color: #495057;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.users-table tr:hover {
    background: #f8f9fa;
}

.users-table td .btn {
    padding: 6px 12px;
    font-size: 13px;
    min-height: auto;
    min-width: auto;
    margin-right: 5px;
}

/* System Settings */
.settings-category {
    margin-bottom: 30px;
    padding-bottom: 25px;
    border-bottom: 1px solid #e9ecef;
}

.settings-category:last-of-type {
    border-bottom: none;
    padding-bottom: 0;
}

.settings-category h4 {
    color: #495057;
    font-size: 16px;
    margin-bottom: 15px;
    padding-left: 5px;
    border-left: 4px solid #667eea;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.setting-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.setting-item label {
    font-weight: 500;
    color: #333;
    font-size: 14px;
}

.setting-item input[type="text"],
.setting-item input[type="email"],
.setting-item input[type="password"],
.setting-item input[type="number"],
.setting-item select {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.setting-item input[type="text"]:focus,
.setting-item input[type="email"]:focus,
.setting-item input[type="password"]:focus,
.setting-item input[type="number"]:focus,
.setting-item select:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.1);
}

.setting-item input[type="checkbox"] {
    margin-right: 8px;
}

.setting-item small {
    color: #666;
    font-size: 12px;
    line-height: 1.4;
}

/* Activity Log */
.activity-log {
    max-height: 400px;
    overflow-y: auto;
}

.activity-item {
    padding: 12px;
    border-left: 3px solid #667eea;
    background: #f8f9fa;
    margin-bottom: 10px;
    border-radius: 4px;
}

.activity-item .activity-time {
    font-size: 12px;
    color: #666;
    margin-bottom: 5px;
}

.activity-item .activity-text {
    font-size: 14px;
    color: #333;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #5568d3 0%, #6a3f8f 100%);
}

.btn.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

/* Admin Tabs Navigation */
.admin-tabs {
    display: flex;
    gap: 5px;
    margin-bottom: 30px;
    border-bottom: 2px solid #e0e0e0;
    flex-wrap: wrap;
}

.admin-tab-btn {
    padding: 12px 20px;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: #666;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.admin-tab-btn:hover {
    color: #667eea;
    background: rgba(102, 126, 234, 0.05);
}

.admin-tab-btn.active {
    color: #667eea;
    border-bottom-color: #667eea;
    background: rgba(102, 126, 234, 0.1);
}

.admin-tab-content {
    display: none !important;
}

.admin-tab-content.active {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    height: auto !important;
    animation: fadeIn 0.3s ease;
}

#admin-tab-logs.active {
    display: block !important;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Enhanced Security */
.security-overview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 25px;
}

.security-stat {
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.security-icon {
    font-size: 32px;
}

.security-content {
    display: flex;
    flex-direction: column;
}

.security-value {
    font-size: 24px;
    font-weight: 600;
    color: #333;
}

.security-label {
    font-size: 12px;
    color: #666;
}

.security-tabs {
    display: flex;
    gap: 5px;
    margin-bottom: 20px;
    border-bottom: 2px solid #e0e0e0;
    overflow-x: auto;
}

.security-tab {
    padding: 10px 20px;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    font-size: 14px;
    color: #666;
    white-space: nowrap;
    transition: all 0.3s;
}

.security-tab:hover {
    color: #667eea;
}

.security-tab.active {
    color: #667eea;
    border-bottom-color: #667eea;
    font-weight: 600;
}

.security-tab-content {
    display: none;
    padding: 20px 0;
}

.security-tab-content.active {
    display: block;
}

.sessions-list,
.failed-logins-list,
.security-audit-log {
    max-height: 400px;
    overflow-y: auto;
}

.session-item,
.failed-login-item,
.audit-log-item {
    background: #f8f9fa;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    padding: 15px;
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.session-info,
.login-info,
.audit-info {
    flex: 1;
}

.session-info h5,
.login-info h5,
.audit-info h5 {
    margin: 0 0 8px 0;
    font-size: 14px;
    color: #333;
}

.session-meta,
.login-meta,
.audit-meta {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    font-size: 12px;
    color: #666;
}

.session-meta span,
.login-meta span,
.audit-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.session-actions {
    display: flex;
    gap: 5px;
}

.ip-management-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

@media (max-width: 768px) {
    .ip-management-grid {
        grid-template-columns: 1fr;
    }
}

.ip-list-container {
    background: #f8f9fa;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 15px;
}

.ip-list-container h5 {
    margin: 0 0 15px 0;
    font-size: 15px;
    color: #333;
}

.ip-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ip-item {
    background: white;
    border: 1px solid #dee2e6;
    border-radius: 4px;
    padding: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.ip-address {
    font-family: monospace;
    font-size: 13px;
    font-weight: 600;
}

.ip-reason {
    font-size: 12px;
    color: #666;
    margin-top: 3px;
}

.user-2fa-status {
    display: grid;
    gap: 10px;
}

.user-2fa-item {
    background: #f8f9fa;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    padding: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.user-2fa-name {
    font-weight: 500;
    color: #333;
}

.badge-2fa {
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 500;
}

.badge-2fa.enabled {
    background: #d4edda;
    color: #155724;
}

.badge-2fa.disabled {
    background: #f8d7da;
    color: #721c24;
}

/* Storage Management */
.storage-overview {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 30px;
    margin-bottom: 25px;
}

.storage-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.storage-chart {
    flex-shrink: 0;
}

.storage-details {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.storage-stat .label {
    color: #666;
}

.storage-stat .value {
    font-weight: 600;
    color: #333;
}

.storage-actions {
    display: flex;
    gap: 10px;
    margin-bottom: 25px;
    flex-wrap: wrap;
}

.storage-breakdown {
    margin-top: 25px;
    padding-top: 25px;
    border-top: 1px solid #e0e0e0;
}

.storage-breakdown h4 {
    margin: 0 0 15px 0;
    font-size: 16px;
    color: #333;
}

.storage-user-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.storage-user-item {
    background: #f8f9fa;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    padding: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.storage-user-name {
    font-weight: 500;
    color: #333;
}

.storage-user-size {
    font-weight: 600;
    color: #667eea;
}

.storage-user-bar {
    height: 6px;
    background: #e9ecef;
    border-radius: 3px;
    overflow: hidden;
    margin-top: 8px;
}

.storage-user-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    transition: width 0.5s ease;
}

.storage-section {
    margin-top: 25px;
    padding-top: 25px;
    border-top: 1px solid #e0e0e0;
}

.storage-section h4 {
    margin: 0 0 15px 0;
    font-size: 16px;
    color: #333;
}

.large-files-list,
.duplicates-list,
.orphaned-files-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.file-item {
    background: #f8f9fa;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    padding: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.file-info {
    flex: 1;
}

.file-name {
    font-weight: 500;
    color: #333;
    font-size: 14px;
    margin-bottom: 5px;
}

.file-meta {
    display: flex;
    gap: 15px;
    font-size: 12px;
    color: #666;
}

.file-actions {
    display: flex;
    gap: 5px;
}

.duplicate-group {
    background: #fff3cd;
    border: 1px solid #ffc107;
    border-radius: 6px;
    padding: 15px;
    margin-bottom: 15px;
}

.duplicate-group-header {
    font-weight: 600;
    color: #856404;
    margin-bottom: 10px;
    font-size: 13px;
}

.duplicate-files {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-left: 15px;
}

/* OAuth Provider Cards */
.oauth-providers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.oauth-provider-card {
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 20px;
    text-align: center;
}

.oauth-provider-card h4 {
    margin: 0 0 15px 0;
    color: #333;
}

.provider-status {
    padding: 8px 12px;
    border-radius: 4px;
    margin: 15px 0;
    font-weight: 500;
    font-size: 14px;
}

.provider-status.status-enabled {
    background: #d4edda;
    color: #155724;
}

.provider-status.status-disabled {
    background: #f8d7da;
    color: #721c24;
}

.oauth-provider-card .btn {
    margin: 5px;
}

/* Lightbox Styles */
.lightbox {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lightbox.active {
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
}

.lightbox-content {
    max-width: 90%;
    max-height: 90%;
    display: flex;
    flex-direction: column;
    align-items: center;
    animation: lightboxZoom 0.3s ease;
}

@keyframes lightboxZoom {
    from {
        transform: scale(0.8);
    }
    to {
        transform: scale(1);
    }
}

.lightbox-content img {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: 4px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.lightbox-caption {
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 15px 20px;
    border-radius: 4px;
    margin-top: 15px;
    text-align: center;
    max-width: 600px;
}

.lightbox-caption h3 {
    margin: 0 0 8px 0;
    font-size: 18px;
}

.lightbox-caption p {
    margin: 0;
    font-size: 14px;
    color: #ccc;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: absolute;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: none;
    font-size: 35px;
    font-weight: bold;
    cursor: pointer;
    padding: 10px 15px;
    border-radius: 4px;
    transition: background 0.3s ease;
    z-index: 10001;
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
    background: rgba(255, 255, 255, 0.4);
}

.lightbox-close {
    top: 20px;
    right: 35px;
    font-size: 40px;
}

.lightbox-prev {
    left: 35px;
    top: 50%;
    transform: translateY(-50%);
}

.lightbox-next {
    right: 35px;
    top: 50%;
    transform: translateY(-50%);
}

/* Mobile responsive */
@media (max-width: 768px) {
    .lightbox-close {
        top: 10px;
        right: 10px;
        font-size: 30px;
        padding: 5px 10px;
    }
    
    .lightbox-prev,
    .lightbox-next {
        font-size: 25px;
        padding: 8px 12px;
    }
    
    .lightbox-prev {
        left: 10px;
    }
    
    .lightbox-next {
        right: 10px;
    }
    
    .lightbox-caption {
        font-size: 14px;
        padding: 10px 15px;
    }
    
    .lightbox-caption h3 {
        font-size: 16px;
    }
}

/* Remove old desktop-first media query - now using mobile-first approach above */

/* ====================================
   THEME SYSTEM STYLES
   ==================================== */

/* Dark Theme */
body[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --text-primary: #e9ecef;
    --text-secondary: #adb5bd;
    --border-color: #495057;
    --shadow-color: rgba(0,0,0,0.3);
}

body[data-theme="dark"] .container {
    background: var(--bg-secondary);
}

body[data-theme="dark"] .header {
    background: url('../img/site-header.png') center center / cover no-repeat;
}

body[data-theme="dark"] .header::before {
    background: rgba(0, 0, 0, 0.4);
}

body[data-theme="dark"] .modal-content {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

body[data-theme="dark"] input,
body[data-theme="dark"] textarea,
body[data-theme="dark"] select {
    background: var(--bg-primary);
    color: var(--text-primary);
    border-color: var(--border-color);
}

body[data-theme="dark"] .gallery-item {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

body[data-theme="dark"] .folder-item {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

body[data-theme="dark"] .filter-btn {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-color: var(--border-color);
}

body[data-theme="dark"] .filter-btn:hover {
    background: var(--bg-primary);
    border-color: #667eea;
}

body[data-theme="dark"] .filter-btn.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-color: transparent;
}

body[data-theme="dark"] .media-type-filter label {
    color: var(--text-primary);
}

/* Dark Mode - Gallery Header */
body[data-theme="dark"] .gallery-header {
    background: linear-gradient(135deg, #2d2d2d 0%, #1a1a1a 100%);
    border-color: #495057;
}

body[data-theme="dark"] .gallery-header h2 {
    color: var(--text-primary);
}

/* Dark Mode - Folder & Media Filters */
body[data-theme="dark"] .folder-filter,
body[data-theme="dark"] .media-type-filter {
    background: #2d2d2d;
}

body[data-theme="dark"] .folder-filter label,
body[data-theme="dark"] .media-type-filter label {
    color: var(--text-primary);
}

body[data-theme="dark"] .folder-filter select {
    background: #1a1a1a;
    color: var(--text-primary);
    border-color: #495057;
}

body[data-theme="dark"] .folder-filter select:hover,
body[data-theme="dark"] .folder-filter select:focus {
    border-color: #667eea;
    background: #2d2d2d;
}

/* Apply Accent Color */
.btn-primary,
button[type="submit"],
.nav-link.active {
    background: var(--accent-color) !important;
    border-color: var(--accent-color) !important;
}

.btn-primary:hover,
button[type="submit"]:hover {
    background: var(--accent-hover) !important;
    border-color: var(--accent-hover) !important;
}

a {
    color: var(--accent-color);
}

a:hover {
    color: var(--accent-hover);
}

/* Theme Control Buttons */
.theme-toggle,
.theme-settings {
    background: rgba(255,255,255,0.2);
    border: 1px solid rgba(255,255,255,0.3);
    color: white;
    border-radius: 50%;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin: 0 5px;
}

.theme-toggle:hover,
.theme-settings:hover {
    background: rgba(255,255,255,0.3);
    transform: scale(1.1);
}

/* Theme Modal */
.theme-modal-content {
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
}

.theme-section {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.theme-section:last-child {
    border-bottom: none;
}

.theme-section h3 {
    margin-bottom: 15px;
    color: var(--text-primary);
    font-size: 1.2em;
}

/* Theme Mode Toggle */
.theme-mode-toggle {
    display: flex;
    gap: 10px;
}

.theme-mode-btn {
    flex: 1;
    padding: 15px;
    border: 2px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 16px;
    font-weight: 500;
}

.theme-mode-btn:hover {
    border-color: var(--accent-color);
    transform: translateY(-2px);
}

.theme-mode-btn.active {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

/* Color Schemes */
.color-schemes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 10px;
}

.scheme-btn {
    padding: 15px;
    border: 3px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    color: white;
    font-weight: 500;
    font-size: 14px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.scheme-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.scheme-btn.active {
    border-color: white;
    box-shadow: 0 0 0 3px var(--accent-color);
}

/* Custom Accent */
.custom-accent {
    display: flex;
    gap: 10px;
    align-items: center;
}

#accentPicker {
    width: 80px;
    height: 44px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
}

#applyAccent,
#resetAccent {
    padding: 10px 20px;
}

/* Theme Preview */
.preview-box {
    padding: 20px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.preview-box p {
    color: var(--text-primary);
    flex-basis: 100%;
    margin-top: 10px;
}

/* Mobile adjustments for theme modal */
@media (max-width: 768px) {
    .theme-modal-content {
        max-width: 95%;
        margin: 20px;
    }
    
    .color-schemes {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .custom-accent {
        flex-wrap: wrap;
    }
    
    #accentPicker {
        flex: 1 0 100%;
    }
}

/* Enhanced Theme System Improvements */
body[data-animations="disabled"] * {
    transition: none !important;
    animation: none !important;
}

body[data-animations="enabled"] {
    transition: background-color 0.4s cubic-bezier(0.4, 0, 0.2, 1), 
                color 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

body[data-animations="enabled"] * {
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

/* Theme notification toast */
.theme-notification {
    position: fixed;
    bottom: -60px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 12px 24px;
    border-radius: 8px;
    box-shadow: 0 4px 12px var(--shadow-color);
    z-index: 10000;
    transition: bottom 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color);
    font-size: 14px;
    font-weight: 500;
}

.theme-notification.show {
    bottom: 24px;
}

/* Animated toggle switch for animations setting */
.toggle-switch {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    user-select: none;
}

.toggle-switch input[type="checkbox"] {
    display: none;
}

.toggle-slider {
    position: relative;
    width: 50px;
    height: 26px;
    background: var(--border-color);
    border-radius: 13px;
    transition: background-color 0.3s;
}

.toggle-slider::before {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.toggle-switch input:checked + .toggle-slider {
    background: var(--accent-color);
}

.toggle-switch input:checked + .toggle-slider::before {
    transform: translateX(24px);
}

.toggle-label {
    font-size: 14px;
    color: var(--text-secondary);
}

/* Enhanced theme modal for mobile */
@media (max-width: 768px) {
    .theme-modal {
        padding: 0;
    }
    
    .theme-modal-content {
        max-width: 100%;
        max-height: 100%;
        border-radius: 0;
        margin: 0;
    }
    
    .theme-section {
        padding: 20px;
    }
    
    .color-schemes {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .scheme-btn {
        padding: 12px;
        font-size: 13px;
    }
}

/* Accent light color support for subtle highlights */
.gallery-item:hover {
    box-shadow: 0 4px 12px var(--accent-light, rgba(0,123,255,0.2));
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    box-shadow: 0 4px 12px var(--accent-light, rgba(0,123,255,0.3));
}

.theme-toggle:hover,
.theme-settings:hover {
    background-color: var(--accent-color);
    transform: scale(1.1) rotate(10deg);
}

/* Smooth theme transition overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    opacity: 0;
    pointer-events: none;
    z-index: 9999;
    transition: opacity 0.3s;
}

body.theme-transitioning::before {
    opacity: 0.5;
}

/* Enhanced scheme button animations */
.scheme-btn {
    transition: transform 0.2s, box-shadow 0.2s;
}

.scheme-btn:hover {
    transform: translateY(-2px) scale(1.05);
}

.scheme-btn.active {
    transform: scale(1.08);
    animation: pulse 0.5s ease-out;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 var(--accent-color); }
    50% { box-shadow: 0 0 0 8px transparent; }
}

/* Keyboard shortcut hints */
.theme-section h3::after {
    content: attr(data-shortcut);
    font-size: 11px;
    font-weight: normal;
    color: var(--text-secondary);
    margin-left: 8px;
    padding: 2px 6px;
    background: var(--bg-primary);
    border-radius: 4px;
    font-family: monospace;
}


/* ===== ENHANCED DARK MODE SUPPORT ===== */

/* Dark Mode - Navigation */
body[data-theme="dark"] .nav {
    background: #2d2d2d;
    border-bottom-color: #495057;
}

body[data-theme="dark"] .nav-link {
    color: #adb5bd;
}

body[data-theme="dark"] .nav-link:hover {
    background: linear-gradient(135deg, #343a40 0%, #495057 100%);
    color: #667eea;
}

body[data-theme="dark"] .nav-link.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

body[data-theme="dark"] .username-display {
    background: linear-gradient(135deg, #343a40 0%, #495057 100%);
    color: #e9ecef;
    border-color: #495057;
}

body[data-theme="dark"] .search-input {
    background: #1a1a1a;
    border-color: #495057;
    color: #e9ecef;
}

body[data-theme="dark"] .search-input::placeholder {
    color: #6c757d;
}

body[data-theme="dark"] .search-input:hover {
    background: #2d2d2d;
    border-color: #6c757d;
}

body[data-theme="dark"] .search-input:focus {
    background: #2d2d2d;
    border-color: #667eea;
}

/* Dark Mode - Main Content & Views */
body[data-theme="dark"] .main-content {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 5%, #1a1a1a 100%);
}

body[data-theme="dark"] #gallery-view,
body[data-theme="dark"] #upload-view,
body[data-theme="dark"] #folders-view,
body[data-theme="dark"] #login-view,
body[data-theme="dark"] #register-view,
body[data-theme="dark"] #settings-view,
body[data-theme="dark"] #admin-view {
    background: #2d2d2d;
    border-color: #495057;
}

/* Dark Mode - Forms */
body[data-theme="dark"] .form-group label {
    color: #e9ecef;
}

body[data-theme="dark"] .form-group input,
body[data-theme="dark"] .form-group textarea,
body[data-theme="dark"] .form-group select {
    background: #1a1a1a;
    border-color: #495057;
    color: #e9ecef;
}

body[data-theme="dark"] .form-group input:hover,
body[data-theme="dark"] .form-group textarea:hover,
body[data-theme="dark"] .form-group select:hover {
    background: #343a40;
    border-color: #6c757d;
}

body[data-theme="dark"] .form-group input:focus,
body[data-theme="dark"] .form-group textarea:focus,
body[data-theme="dark"] .form-group select:focus {
    background: #343a40;
    border-color: #667eea;
}

body[data-theme="dark"] .form-group small {
    color: #adb5bd;
}

/* Dark Mode - File Input */
body[data-theme="dark"] .file-input-wrapper {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    border-color: #667eea;
}

body[data-theme="dark"] .file-input-wrapper:hover {
    background: linear-gradient(135deg, #2d2d2d 0%, #343a40 100%);
}

body[data-theme="dark"] .file-input-wrapper.dragover {
    background: linear-gradient(135deg, #343a40 0%, #495057 100%);
}

body[data-theme="dark"] .file-name {
    color: #667eea;
}

/* Dark Mode - Pagination */
body[data-theme="dark"] .pagination {
    background: #2d2d2d;
    border-color: #495057;
}

body[data-theme="dark"] .pagination #pageInfo {
    background: linear-gradient(135deg, #343a40 0%, #495057 100%);
    color: #e9ecef;
    border-color: #6c757d;
}

/* Dark Mode - Auth */
body[data-theme="dark"] .auth-container {
    background: #2d2d2d;
    border-color: #495057;
}

body[data-theme="dark"] .auth-container h2 {
    color: #e9ecef;
}

body[data-theme="dark"] .auth-status.success {
    background: linear-gradient(135deg, #1e4620 0%, #2d5a2e 100%);
    color: #a8e6a8;
    border-color: #28a745;
}

body[data-theme="dark"] .auth-status.error {
    background: linear-gradient(135deg, #5a1a1a 0%, #721c24 100%);
    color: #f8b4b4;
    border-color: #dc3545;
}

body[data-theme="dark"] .oauth-separator::before {
    background: #495057;
}

body[data-theme="dark"] .oauth-separator span {
    background: #2d2d2d;
    color: #adb5bd;
}

body[data-theme="dark"] .oauth-btn {
    background: #1a1a1a;
    border-color: #495057;
    color: #e9ecef;
}

body[data-theme="dark"] .oauth-btn:hover {
    background: #343a40;
}

/* Dark Mode - Language Select */
body[data-theme="dark"] .language-select {
    background: #1a1a1a;
    border-color: #495057;
    color: #e9ecef;
}

body[data-theme="dark"] .language-select:hover {
    border-color: #667eea;
    background: #2d2d2d;
}

body[data-theme="dark"] .language-select:focus {
    border-color: #667eea;
    background: #2d2d2d;
}