@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

:root {
    --bg-dark: #0b0f19;
    --bg-card: rgba(20, 26, 46, 0.65);
    --bg-glass: rgba(17, 24, 43, 0.8);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-focus: rgba(139, 92, 246, 0.6);
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    
    --primary: #8b5cf6;
    --primary-hover: #7c3aed;
    --primary-glow: rgba(139, 92, 246, 0.3);
    
    --secondary: #3b82f6;
    --secondary-hover: #2563eb;
    
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    
    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-sans);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.5;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

/* Background Gradients */
.bg-glow {
    position: fixed;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(150px);
    z-index: -1;
    opacity: 0.15;
    pointer-events: none;
}
.bg-glow-1 {
    background: var(--primary);
    top: -200px;
    left: -200px;
}
.bg-glow-2 {
    background: var(--secondary);
    bottom: -200px;
    right: -200px;
}

/* Authentication Page */
.auth-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    position: relative;
    z-index: 1;
}

.auth-card {
    background: rgba(17, 24, 43, 0.95);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    width: 100%;
    max-width: 440px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    animation: fadeIn 0.35s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

.auth-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 30px;
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--text-main) 30%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.auth-logo svg {
    width: 36px;
    height: 36px;
    fill: var(--primary);
}

.auth-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 8px;
    text-align: center;
}

.auth-subtitle {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 24px;
    text-align: center;
}

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

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-main);
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-main);
    font-family: var(--font-sans);
    font-size: 15px;
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.07);
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-glow);
}

select.form-input option,
select option {
    background-color: #1a1f36 !important;
    color: #ffffff !important;
    padding: 10px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 12px 24px;
    border-radius: 12px;
    font-family: var(--font-sans);
    font-size: 16px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    color: white;
    box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
}

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

.btn-danger:hover {
    opacity: 0.9;
}

.auth-footer {
    margin-top: 24px;
    text-align: center;
    font-size: 14px;
    color: var(--text-muted);
}

.auth-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.auth-link:hover {
    text-decoration: underline;
}

/* Dashboard Layout */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background: var(--bg-glass);
    border-right: 1px solid var(--border-color);
    padding: 24px;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 10;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 32px;
    text-decoration: none;
    color: var(--text-main);
}

.brand svg {
    width: 28px;
    height: 28px;
    fill: var(--primary);
}

.sidebar-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: auto;
}

.menu-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 12px;
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.menu-link:hover, .menu-link.active {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.05);
}

.menu-link.active {
    background: rgba(139, 92, 246, 0.15);
    color: var(--primary);
    border-left: 3px solid var(--primary);
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

.menu-link svg {
    width: 20px;
    height: 20px;
}

/* Storage Card */
.storage-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 20px;
    margin-top: 24px;
}

.storage-title {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.storage-bar-bg {
    background: rgba(255, 255, 255, 0.08);
    height: 8px;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 12px;
}

.storage-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--secondary) 0%, var(--primary) 100%);
    border-radius: 4px;
    transition: width 0.5s ease-out;
}

.storage-info {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.storage-info strong {
    color: var(--text-main);
}

.storage-btn {
    font-size: 12px;
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    display: inline-block;
    transition: var(--transition);
}

.storage-btn:hover {
    color: var(--primary-hover);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 280px;
    width: calc(100% - 280px);
    max-width: calc(100% - 280px);
    padding: 32px 40px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    box-sizing: border-box;
}

/* Top bar */
.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    gap: 20px;
}

.search-bar {
    position: relative;
    width: 100%;
    max-width: 480px;
}

.search-input {
    width: 100%;
    padding: 10px 16px 10px 44px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-main);
    font-family: var(--font-sans);
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.07);
}

.search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    fill: var(--text-muted);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: white;
    font-size: 16px;
    border: 2px solid var(--border-color);
}

/* Breadcrumbs */
.breadcrumbs {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 24px;
    flex-wrap: wrap;
    font-size: 18px;
    font-weight: 600;
}

.breadcrumb-item {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
}

.breadcrumb-item:hover {
    color: var(--text-main);
}

.breadcrumb-separator {
    color: var(--text-muted);
    font-weight: 400;
}

.breadcrumb-current {
    color: var(--text-main);
}

/* Toolbar actions */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 16px;
}

.toolbar-group {
    display: flex;
    gap: 12px;
}

/* Dashboard Grid/Lists */
.section-title {
    font-size: 15px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 16px;
    margin-top: 12px;
}

.grid-folders, .grid-files {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.grid-files {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}

/* Folder Card */
.card-folder {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: var(--transition);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
}

.card-folder:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.folder-info {
    display: flex;
    align-items: center;
    gap: 12px;
    overflow: hidden;
}

.folder-icon {
    width: 24px;
    height: 24px;
    fill: var(--warning);
    flex-shrink: 0;
}

.folder-name {
    font-weight: 500;
    font-size: 14px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* File Card */
.card-file {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
    position: relative;
    cursor: pointer;
}

.card-file:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.25);
}

.file-preview {
    height: 120px;
    background: rgba(255, 255, 255, 0.02);
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-muted);
}

.file-preview svg {
    width: 48px;
    height: 48px;
    opacity: 0.6;
}

.file-body {
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.file-name {
    font-weight: 500;
    font-size: 14px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-meta {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-muted);
}

/* Card actions dropdown */
.card-actions {
    position: relative;
    display: inline-block;
}

.btn-icon {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    padding: 6px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.btn-icon:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.08);
}

.btn-icon svg {
    width: 16px;
    height: 16px;
}

.dropdown-menu {
    position: absolute;
    right: 0;
    top: 100%;
    background: rgba(17, 24, 43, 0.96);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    z-index: 100;
    min-width: 160px;
    display: none;
    flex-direction: column;
    padding: 6px;
    margin-top: 4px;
}

.dropdown-menu.show {
    display: flex;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 8px;
    color: var(--text-main);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    cursor: pointer;
    transition: var(--transition);
}

.dropdown-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.dropdown-item.danger {
    color: var(--danger);
}

.dropdown-item.danger:hover {
    background: rgba(239, 68, 68, 0.1);
}

/* Modal styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.75);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
}

.modal.show {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 30px;
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    transform: scale(0.9);
    transition: var(--transition);
}

.modal.show .modal-content {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.modal-title {
    font-size: 20px;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 24px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 24px;
}

/* Floating Upload Panel Drawer */
.upload-drawer {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 360px;
    background: rgba(17, 24, 43, 0.96);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    z-index: 1000;
    transform: translateY(200px) translateZ(0);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
    overflow: hidden;
}

.upload-drawer.show {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
}

.drawer-header {
    background: rgba(255, 255, 255, 0.02);
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

.drawer-title {
    font-weight: 600;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.drawer-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 18px;
}

.drawer-body {
    max-height: 240px;
    overflow-y: auto;
    padding: 12px 20px;
}

.upload-item {
    margin-bottom: 14px;
}

.upload-item-header {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    margin-bottom: 6px;
    gap: 10px;
}

.upload-filename {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-weight: 500;
}

.upload-speed {
    color: var(--text-muted);
    font-size: 11px;
    flex-shrink: 0;
}

.upload-progress-bar-bg {
    background: rgba(255, 255, 255, 0.08);
    height: 6px;
    border-radius: 3px;
    overflow: hidden;
}

.upload-progress-bar {
    height: 100%;
    width: 0%;
    background: var(--primary);
    border-radius: 3px;
    transition: width 0.1s linear;
}

/* Alert styles */
.alert {
    padding: 14px 20px;
    border-radius: 12px;
    margin-bottom: 24px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid transparent;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    border-color: rgba(16, 185, 129, 0.2);
}

.alert-danger {
    background: rgba(239, 68, 110, 0.1);
    color: var(--danger);
    border-color: rgba(239, 68, 68, 0.2);
}

/* Client Select Page Styles */
.client-container {
    max-width: 960px;
    margin: 40px auto;
    padding: 0 20px;
}

.client-header-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.client-title {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 10px;
}

.client-desc {
    color: var(--text-muted);
    font-size: 15px;
}

.client-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 100px; /* Leave space for floating action bar */
}

/* Selectable File Card */
.card-select-file {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    user-select: none;
}

.card-select-file:hover {
    transform: translateY(-3px);
    border-color: rgba(255, 255, 255, 0.15);
}

.card-select-file.selected {
    border-color: var(--primary);
    box-shadow: 0 0 15px rgba(139, 92, 246, 0.4);
    background: rgba(139, 92, 246, 0.08);
}

.select-indicator {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.4);
    background: rgba(11, 15, 25, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 6;
}

.card-select-file.selected .select-indicator {
    background: var(--primary);
    border-color: var(--primary);
}

.card-select-file.selected .select-indicator::after {
    content: '';
    width: 6px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
    margin-bottom: 2px;
}

/* Floating Actions Bar for Client Page */
.floating-bar {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px) translateZ(0);
    background: rgba(17, 24, 43, 0.96);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 16px 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: calc(100% - 40px);
    max-width: 760px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    z-index: 1000;
    opacity: 0;
    transition: var(--transition);
}

.floating-bar.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.selected-count-text {
    font-size: 16px;
    font-weight: 500;
}

.selected-count-text strong {
    color: var(--primary);
}

.floating-bar .btn {
    width: auto;
}

/* Client Select limits shake animation */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-6px); }
    40%, 80% { transform: translateX(6px); }
}

.shake {
    animation: shake 0.4s ease-in-out;
}

/* Admin Dashboard Table CSS */
.admin-table-container {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    overflow-x: auto;
    max-width: 100%;
    margin-top: 24px;
    -webkit-overflow-scrolling: touch;
}

.admin-table {
    width: 100%;
    min-width: 700px;
    border-collapse: collapse;
    text-align: left;
}

.admin-table th, .admin-table td {
    padding: 16px 20px;
    font-size: 14px;
}

.admin-table th {
    background: rgba(255, 255, 255, 0.02);
    font-weight: 600;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
    text-transform: uppercase;
    font-size: 12px;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.admin-table td {
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.admin-table tr:last-child td {
    border-bottom: none;
}

.admin-table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

.badge {
    display: inline-flex;
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-primary {
    background: rgba(139, 92, 246, 0.15);
    color: var(--primary);
}

.badge-secondary {
    background: rgba(59, 130, 246, 0.15);
    color: var(--secondary);
}

.badge-success {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.15);
    color: var(--warning);
}

.admin-config-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

/* ==========================================================================
   Media Preview Lightbox & Gallery Modal
   ========================================================================== */
.preview-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(7, 10, 18, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.preview-modal.show {
    opacity: 1;
    pointer-events: auto;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--border-color);
    z-index: 10;
}

.preview-title-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
    overflow: hidden;
}

.preview-filename {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 400px;
}

.preview-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.preview-body {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 20px;
    overflow: hidden;
}

.preview-content-box {
    max-width: 90%;
    max-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    border-radius: 12px;
    overflow: hidden;
}

.preview-content-box img {
    max-width: 100%;
    max-height: 82vh;
    object-fit: contain;
    border-radius: 12px;
    transition: transform 0.25s ease;
}

.preview-content-box iframe {
    width: 85vw;
    height: 80vh;
    border: none;
    border-radius: 12px;
    background: #ffffff;
}

.preview-content-box video {
    max-width: 90vw;
    max-height: 80vh;
    border-radius: 12px;
    outline: none;
}

.preview-nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-color);
    color: white;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    z-index: 10;
}

.preview-nav-btn:hover {
    background: var(--primary);
    transform: translateY(-50%) scale(1.1);
}

.preview-nav-prev { left: 24px; }
.preview-nav-next { right: 24px; }

/* Checkbox overlay for cards (Multi-Select) */
.card-checkbox {
    position: absolute;
    top: 12px;
    left: 12px;
    width: 22px;
    height: 22px;
    border-radius: 6px;
    border: 2px solid var(--text-muted);
    background: rgba(11, 15, 25, 0.6);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 5;
    opacity: 0.5;
}

.card-folder:hover .card-checkbox,
.card-file:hover .card-checkbox,
.card-checkbox.checked {
    opacity: 1;
}

.card-checkbox.checked {
    background: var(--primary);
    border-color: var(--primary);
}

.card-checkbox.checked::after {
    content: '';
    width: 5px;
    height: 9px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
    margin-bottom: 2px;
}

.card-folder.selected,
.card-file.selected {
    border-color: var(--primary) !important;
    background: rgba(139, 92, 246, 0.12) !important;
    box-shadow: 0 0 0 2px var(--primary-glow) !important;
}

/* Bulk Toolbar */
.bulk-toolbar {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(-100px) translateZ(0);
    background: rgba(17, 24, 43, 0.96);
    border: 1px solid var(--border-focus);
    border-radius: 16px;
    padding: 12px 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.3s ease;
}

.bulk-toolbar.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    pointer-events: auto;
}

/* Eye preview button on card */
.btn-preview-eye {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: rgba(11, 15, 25, 0.75);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    transition: var(--transition);
    z-index: 5;
}

/* Position eye preview button on top-left for client selection card to avoid collision with check indicator */
.card-select-file .btn-preview-eye {
    right: auto;
    left: 12px;
    opacity: 0.8;
}

.card-file:hover .btn-preview-eye,
.card-select-file:hover .btn-preview-eye {
    opacity: 1;
}

.btn-preview-eye:hover {
    background: var(--primary);
    border-color: var(--primary);
    transform: scale(1.1);
}

/* Mobile Sidebar Overlay */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.75);
    z-index: 999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.sidebar-overlay.show {
    opacity: 1;
    pointer-events: auto;
}

/* Mobile Toggle Bar */
.mobile-nav-toggle {
    display: none;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    background: #0f172a;
    border-bottom: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    box-sizing: border-box;
    z-index: 998;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

/* Ultra-Responsive Media Queries (TV, Laptop, Tablet, Mobile HP) */
@media (max-width: 1024px) {
    .main-content {
        margin-left: 240px;
        width: calc(100% - 240px);
        max-width: calc(100% - 240px);
        padding: 24px;
    }
    .sidebar {
        width: 240px;
    }
}

@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
        padding-top: 52px !important;
    }

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

    .sidebar {
        position: fixed;
        left: -300px;
        top: 0;
        width: 280px;
        height: 100vh;
        height: 100dvh;
        z-index: 1000;
        transition: left 0.3s ease;
        background: #0f172a;
        padding: 16px 16px 90px 16px !important;
        box-sizing: border-box !important;
        display: flex;
        flex-direction: column;
        overflow-y: auto;
    }

    .sidebar .sidebar-menu {
        margin-bottom: 12px !important;
    }

    .sidebar .storage-card {
        margin-top: 12px !important;
        margin-bottom: 20px !important;
        padding: 12px !important;
        flex-shrink: 0;
    }

    .sidebar.open {
        left: 0;
        box-shadow: 10px 0 30px rgba(0, 0, 0, 0.7);
    }

    .main-content {
        margin-left: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
        padding: 12px 14px !important;
    }

    .topbar {
        flex-direction: column;
        align-items: stretch;
        gap: 8px !important;
        margin-bottom: 12px !important;
    }

    .topbar .user-profile {
        display: none !important;
    }

    .search-bar {
        max-width: 100%;
    }

    /* Toolbar buttons grid responsive */
    .toolbar {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }

    .toolbar-group {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 8px;
        width: 100%;
    }

    .toolbar-group .btn,
    .toolbar-group label.btn {
        width: 100%;
        font-size: 12px;
        padding: 10px 8px;
        text-align: center;
        justify-content: center;
        line-height: 1.2;
    }

    /* Cards grid: 2 columns on mobile for clean layout */
    .grid-folders, .grid-files {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 10px !important;
    }

    .card-file {
        padding: 8px;
    }

    .card-file .file-name {
        font-size: 12px;
    }

    .card-file .file-meta {
        font-size: 10px;
    }

    /* Ensure btn-preview-eye options button is ALWAYS visible on touch screens */
    .btn-preview-eye {
        opacity: 0.9 !important;
        background: rgba(15, 23, 42, 0.8) !important;
    }

    /* Lightbox Preview Modal Responsive Improvements */
    .preview-modal {
        padding: 10px !important;
    }

    .preview-header {
        padding: 8px 12px !important;
        gap: 6px !important;
    }

    .preview-filename {
        font-size: 13px !important;
        max-width: 160px !important;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .preview-actions .btn {
        padding: 4px 10px !important;
        font-size: 12px !important;
    }

    .preview-content-box iframe {
        width: 96vw !important;
        height: 70vh !important;
    }

    .preview-content-box img,
    .preview-content-box video {
        max-width: 96vw !important;
        max-height: 70vh !important;
    }

    .preview-nav-btn {
        width: 38px !important;
        height: 38px !important;
        font-size: 16px !important;
        background: rgba(0, 0, 0, 0.6) !important;
    }

    .preview-nav-prev { left: 4px !important; }
    .preview-nav-next { right: 4px !important; }

    /* Bulk Toolbar on Mobile */
    .bulk-toolbar {
        width: 94% !important;
        padding: 10px 12px !important;
        font-size: 12px !important;
        gap: 6px !important;
    }

    /* Mobile Layout Container Fixes */
    html, body {
        max-width: 100vw !important;
        overflow-x: hidden !important;
    }

    .main-content {
        margin-left: 0 !important;
        width: 100% !important;
        max-width: 100vw !important;
        padding: 12px 14px 100px 14px !important;
        box-sizing: border-box !important;
        overflow-x: hidden !important;
    }

    /* Admin Configuration Grid Responsive Fix */
    .admin-config-grid {
        display: flex !important;
        flex-direction: column !important;
        width: 100% !important;
        max-width: 100% !important;
        gap: 12px !important;
        margin-bottom: 24px !important;
    }

    /* Admin User Table Mobile Stacked Cards */
    .admin-table-container {
        background: transparent !important;
        border: none !important;
        box-shadow: none !important;
        overflow-x: hidden !important;
        margin-top: 16px !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }

    .admin-table {
        min-width: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
    }

    .admin-table, 
    .admin-table thead, 
    .admin-table tbody, 
    .admin-table th, 
    .admin-table td, 
    .admin-table tr {
        display: block !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }

    .admin-table thead {
        display: none !important;
    }

    .admin-table tr {
        background: var(--bg-card) !important;
        border: 1px solid var(--border-color) !important;
        border-radius: 16px !important;
        padding: 16px !important;
        margin-bottom: 16px !important;
        box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4) !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }

    .admin-table td {
        display: flex !important;
        flex-direction: column !important;
        align-items: flex-start !important;
        padding: 10px 0 !important;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05) !important;
        font-size: 13px !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }

    .admin-table td:last-child {
        border-bottom: none !important;
        padding-top: 12px !important;
    }

    .admin-table td::before {
        content: attr(data-label);
        font-weight: 700;
        color: var(--primary);
        font-size: 11px;
        text-transform: uppercase;
        letter-spacing: 0.6px;
        margin-bottom: 4px;
        display: block !important;
    }

    .admin-table td .td-val {
        display: block !important;
        width: 100% !important;
        max-width: 100% !important;
        overflow-wrap: anywhere !important;
        word-break: break-all !important;
        color: var(--text-main) !important;
        text-align: left !important;
        font-size: 14px !important;
        box-sizing: border-box !important;
    }

    /* Modal Responsive on Mobile */
    .modal {
        padding: 12px !important;
    }

    .modal-content {
        width: 94vw !important;
        max-width: 94vw !important;
        padding: 20px 16px !important;
        box-sizing: border-box !important;
        margin: 0 auto !important;
    }

    .modal-footer {
        display: flex !important;
        gap: 8px !important;
    }
}

@media (max-width: 480px) {
    .grid-folders, .grid-files {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 8px !important;
    }
    
    .toolbar-group {
        grid-template-columns: 1fr 1fr;
    }
}

/* Global High-Performance & Hardware Acceleration Rules */
*, *::before, *::after {
    -webkit-tap-highlight-color: transparent;
}

.modal, .upload-drawer, .floating-bar, .bulk-toolbar, .preview-modal, .sidebar {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}

/* Device-wide performance overrides for ultra-smooth 60fps rendering */
@media (max-width: 768px) {
    *, *::before, *::after {
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
    }
    
    .card-file:hover, .card-folder:hover, .card-select-file:hover {
        transform: none !important;
    }
}