/* Navbar */
.navbar {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: 0 20px;
    height: var(--navbar-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
    gap: 12px;
}

.navbar-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.navbar-brand {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.navbar-brand i {
    font-size: 24px;
}

.nav-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    font-size: 18px;
    color: var(--text-secondary);
}

.nav-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.navbar-center {
    flex: 1;
    max-width: 500px;
    margin: 0 16px;
}

.search-bar-nav {
    display: flex;
    align-items: center;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 0 12px;
    transition: var(--transition);
}

.search-bar-nav:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.1);
}

.search-bar-nav i {
    color: var(--text-muted);
    font-size: 14px;
}

.search-bar-nav input {
    border: none;
    background: transparent;
    padding: 8px 8px 8px 12px;
    width: 100%;
    font-size: 14px;
    color: var(--text-primary);
    outline: none;
}

.search-bar-nav input::placeholder {
    color: var(--text-muted);
}

.navbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 12px 4px 4px;
    border-radius: var(--radius);
    cursor: pointer;
    position: relative;
    transition: var(--transition);
}

.user-menu:hover {
    background: var(--bg-tertiary);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
    flex-shrink: 0;
}

.username {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.user-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    min-width: 180px;
    padding: 8px 0;
    display: none;
    z-index: 50;
}

.user-dropdown.show {
    display: block;
}

.user-dropdown a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 16px;
    color: var(--text-secondary);
    font-size: 14px;
    transition: var(--transition);
}

.user-dropdown a:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.user-dropdown hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 4px 0;
}

/* Sidebar */
.sidebar {
    background: var(--bg-primary);
    border-right: 1px solid var(--border-color);
    width: var(--sidebar-width);
    height: calc(100vh - var(--navbar-height));
    position: fixed;
    top: var(--navbar-height);
    left: 0;
    overflow-y: auto;
    padding: 16px 0;
    transition: transform var(--transition);
    z-index: 50;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sidebar-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 20px;
    color: var(--text-secondary);
    transition: var(--transition);
    cursor: pointer;
    border-left: 3px solid transparent;
    font-size: 14px;
    font-weight: 500;
}

.sidebar-item:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.sidebar-item.active {
    color: var(--primary-color);
    background: var(--bg-tertiary);
    border-left-color: var(--primary-color);
}

.sidebar-item i {
    width: 20px;
    text-align: center;
    font-size: 16px;
}

.sidebar hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 8px 16px;
}

/* Sidebar responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .sidebar-overlay {
        display: none;
        position: fixed;
        top: var(--navbar-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0,0,0,0.3);
        z-index: 40;
    }
    
    .sidebar-overlay.show {
        display: block;
    }
    
    #sidebar-toggle {
        display: flex;
    }
}

@media (min-width: 769px) {
    #sidebar-toggle {
        display: none;
    }
}

/* Toast */
#toast-container {
    position: fixed;
    top: calc(var(--navbar-height) + 16px);
    right: 16px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-width: 380px;
    width: 100%;
}

.toast {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 12px 16px;
    box-shadow: var(--shadow-lg);
    animation: toastSlideIn 0.3s ease;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
}

.toast-success { border-left: 4px solid #22c55e; }
.toast-error { border-left: 4px solid #ef4444; }
.toast-warning { border-left: 4px solid #f59e0b; }
.toast-info { border-left: 4px solid var(--primary-color); }

.toast i {
    font-size: 18px;
    flex-shrink: 0;
}

.toast-success i { color: #22c55e; }
.toast-error i { color: #ef4444; }
.toast-warning i { color: #f59e0b; }
.toast-info i { color: var(--primary-color); }

.toast .toast-close {
    margin-left: auto;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 16px;
    background: none;
    border: none;
}

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

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease;
}

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

.modal {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 32px;
    max-width: 520px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    animation: modalSlideUp 0.3s ease;
}

@keyframes modalSlideUp {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

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

.modal-header h3 {
    font-size: 20px;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

/* Context Menu */
#context-menu {
    position: fixed;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    padding: 6px 0;
    z-index: 200;
    display: none;
}

#context-menu.show {
    display: block;
}

.context-menu-item {
    padding: 8px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
    color: var(--text-secondary);
}

.context-menu-item:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.context-menu-item.danger {
    color: #ef4444;
}

.context-menu-item.danger:hover {
    background: #fef2f2;
}

.context-menu-item i {
    width: 18px;
    text-align: center;
    font-size: 14px;
}

.context-menu hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 4px 0;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.stat-card .value {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-card .label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* Recent items */
.recent-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.recent-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    transition: var(--transition);
    cursor: pointer;
}

.recent-item:hover {
    background: var(--bg-tertiary);
}

.recent-item i {
    font-size: 20px;
    color: var(--text-muted);
}

.recent-item .info {
    flex: 1;
    min-width: 0;
}

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

.recent-item .info .path {
    font-size: 12px;
    color: var(--text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.recent-item .time {
    font-size: 12px;
    color: var(--text-muted);
    flex-shrink: 0;
}

/* Upload Zone */
.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    background: var(--bg-secondary);
    margin-bottom: 16px;
}

.upload-zone:hover {
    border-color: var(--primary-color);
}

.upload-zone.dragover {
    border-color: var(--primary-color);
    background: var(--bg-tertiary);
}

.upload-zone i {
    font-size: 48px;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.upload-zone .upload-text {
    font-size: 16px;
    color: var(--text-secondary);
}

.upload-zone .upload-subtext {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Admin */
.user-list-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    margin-bottom: 8px;
    flex-wrap: wrap;
    gap: 8px;
}

.user-list-item .user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
    min-width: 0;
}

.user-list-item .user-info .avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    flex-shrink: 0;
}

.user-list-item .user-info .details {
    min-width: 0;
}

.user-list-item .user-info .details .name {
    font-weight: 500;
}

.user-list-item .user-info .details .role {
    font-size: 12px;
    color: var(--text-muted);
}

.user-list-item .user-actions {
    display: flex;
    gap: 4px;
    flex-shrink: 0;
}

/* Search bar */
.search-bar {
    display: flex;
    gap: 8px;
    align-items: center;
}

.search-bar input {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 14px;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-width: 200px;
}

.search-bar input:focus {
    outline: none;
    border-color: var(--primary-color);
}