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

:root {
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-bg-strong: rgba(255, 255, 255, 0.14);
    --glass-border: rgba(255, 255, 255, 0.15);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --primary: #6C63FF;
    --primary-hover: #5A52D5;
    --danger: #ff4757;
    --success: #2ed573;
    --warning: #ffa502;
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.75);
    --text-muted: rgba(255, 255, 255, 0.45);
    --bg-overlay: rgba(10, 10, 25, 0.55);
    --bg-card: rgba(255, 255, 255, 0.06);
    --sidebar-bg: rgba(15, 15, 30, 0.55);
    --blur-glass: blur(18px);
    --blur-heavy: blur(24px);
}

html, body {
    height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    color: var(--text-primary);
    overflow-x: hidden;
}

body {
    min-height: 100vh;
}

/* Video Background */
.bg-video-container {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    background: url('/background.jpg') center / cover no-repeat;
}

.bg-video {
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.bg-overlay {
    position: absolute;
    inset: 0;
    background: var(--bg-overlay);
}

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

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

/* Glass Card */
.glass-card {
    background: var(--glass-bg-strong);
    backdrop-filter: var(--blur-glass);
    -webkit-backdrop-filter: var(--blur-glass);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 24px;
    border: none;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(108, 99, 255, 0.4);
}

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

.btn-danger:hover {
    background: #e84147;
    transform: translateY(-1px);
}

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

.btn-success:hover {
    background: #26bd62;
    transform: translateY(-1px);
}

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

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.15);
}

.btn-sm {
    padding: 6px 14px;
    font-size: 12px;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-icon:hover {
    background: rgba(255, 255, 255, 0.12);
    color: var(--text-primary);
}

/* Form elements */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 14px;
    transition: all 0.2s;
    outline: none;
}

.form-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.2);
    background: rgba(255, 255, 255, 0.08);
}

.form-input::placeholder {
    color: var(--text-muted);
}

/* Badge */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
}

.badge-admin {
    background: rgba(108, 99, 255, 0.2);
    color: var(--primary);
}

.badge-user {
    background: rgba(46, 213, 115, 0.2);
    color: var(--success);
}

.badge-used {
    background: rgba(255, 71, 87, 0.2);
    color: var(--danger);
}

.badge-active {
    background: rgba(46, 213, 115, 0.2);
    color: var(--success);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.25);
}

/* Toast */
.toast {
    position: fixed;
    top: 24px;
    right: 24px;
    padding: 14px 24px;
    border-radius: 12px;
    color: white;
    font-size: 14px;
    font-weight: 500;
    z-index: 9999;
    animation: slideIn 0.3s ease;
    backdrop-filter: var(--blur-glass);
    -webkit-backdrop-filter: var(--blur-glass);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.toast-success {
    background: rgba(46, 213, 115, 0.85);
}

.toast-error {
    background: rgba(255, 71, 87, 0.85);
}

.toast-info {
    background: rgba(108, 99, 255, 0.85);
}

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

/* Loading spinner */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--glass-border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    display: inline-block;
}

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

/* Pagination */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
}

.pagination a, .pagination span {
    padding: 8px 14px;
    border-radius: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    text-decoration: none;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--glass-border);
    transition: all 0.2s;
}

.pagination a:hover {
    background: rgba(108, 99, 255, 0.2);
    color: var(--primary);
    border-color: var(--primary);
}

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

/* Context menu */
.context-menu {
    position: fixed;
    background: rgba(20, 20, 40, 0.48);
    backdrop-filter: var(--blur-heavy);
    -webkit-backdrop-filter: var(--blur-heavy);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    padding: 6px;
    min-width: 160px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    z-index: 1000;
    display: none;
}

.context-menu .menu-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 14px;
    border-radius: 6px;
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
}

.context-menu .menu-item:hover {
    background: rgba(108, 99, 255, 0.15);
    color: var(--text-primary);
}

.context-menu .menu-item.danger:hover {
    background: rgba(255, 71, 87, 0.15);
    color: var(--danger);
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(6px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease;
}

.modal-content {
    background: rgba(20, 20, 40, 0.38);
    backdrop-filter: var(--blur-heavy);
    -webkit-backdrop-filter: var(--blur-heavy);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 32px;
    min-width: 400px;
    max-width: 500px;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
}

.modal-content h3 {
    font-size: 18px;
    margin-bottom: 20px;
}

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

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

/* File size */
.file-size {
    color: var(--text-muted);
    font-size: 12px;
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state .empty-icon {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state p {
    font-size: 14px;
}