/**
 * Components CSS
 * Reusable UI component styles - adapted from mockup designs
 */

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
    font-family: var(--font-ui);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    border: 1px solid var(--color-border-solid);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition);
    text-align: center;
    text-decoration: none;
}

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

.btn-primary {
    background: var(--color-accent-primary);
    color: var(--color-bg-primary);
    border-color: var(--color-accent-primary);
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    color: var(--color-bg-primary);
    box-shadow: var(--shadow-glow-strong);
}

.btn-secondary {
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    border-color: var(--color-border-solid);
}

.btn-secondary:hover {
    background: var(--color-bg-elevated);
    border-color: var(--color-accent-primary);
    color: var(--color-accent-primary);
}

.btn-danger {
    background: transparent;
    color: var(--color-error);
    border-color: var(--color-error);
}

.btn-danger:hover {
    background: var(--color-error);
    color: #fff;
}

.btn-ghost {
    background: transparent;
    border-color: transparent;
    color: var(--color-text-secondary);
}

.btn-ghost:hover {
    background: rgba(43, 205, 238, 0.1);
    color: var(--color-accent-primary);
}

.btn-sm {
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--space-md) var(--space-lg);
    font-size: var(--font-size-base);
}

.btn-block {
    width: 100%;
}

.btn-icon {
    padding: var(--space-sm);
    width: 36px;
    height: 36px;
}

.btn-icon.btn-sm {
    width: 28px;
    height: 28px;
    padding: var(--space-xs);
}

/* ============================================
   Forms
   ============================================ */
.form-group {
    margin-bottom: var(--space-md);
}

.form-label {
    display: block;
    margin-bottom: var(--space-xs);
    color: var(--color-text-secondary);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    background: var(--color-bg-deep);
    color: var(--color-text-primary);
    font-family: var(--font-ui);
    font-size: var(--font-size-base);
    border: 1px solid var(--color-border-solid);
    border-radius: var(--border-radius);
    transition: all var(--transition);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 2px rgba(43, 205, 238, 0.2);
}

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

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='%239aa0b3'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-sm) center;
    padding-right: var(--space-xl);
}

.form-textarea {
    resize: vertical;
    min-height: 80px;
}

/* ============================================
   Cards
   ============================================ */
.card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-solid);
    border-radius: var(--border-radius-lg);
    padding: var(--space-lg);
    transition: all var(--transition);
}

.card:hover {
    border-color: rgba(43, 205, 238, 0.3);
    box-shadow: var(--shadow-glow);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--color-border-solid);
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

.card-body {
    color: var(--color-text-secondary);
}

.card-footer {
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border-solid);
}

/* ============================================
   Tables
   ============================================ */
.table-container {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-solid);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

.table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.table th {
    padding: var(--space-md);
    background: var(--color-bg-deep);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--color-border-solid);
}

.table td {
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--color-border-solid);
    color: var(--color-text-primary);
}

.table tr:hover td {
    background: rgba(43, 205, 238, 0.05);
}

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

/* ============================================
   Badges & Tags
   ============================================ */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 2px 10px;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--border-radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-primary {
    background: rgba(43, 205, 238, 0.2);
    color: var(--color-accent-primary);
    border: 1px solid rgba(43, 205, 238, 0.3);
}

.badge-admin {
    background: rgba(168, 85, 247, 0.1);
    color: var(--color-role-admin);
    border: 1px solid rgba(168, 85, 247, 0.2);
}

.badge-editor {
    background: rgba(59, 130, 246, 0.1);
    color: var(--color-role-editor);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.badge-viewer {
    background: rgba(107, 114, 128, 0.1);
    color: var(--color-role-viewer);
    border: 1px solid rgba(107, 114, 128, 0.2);
}

.badge-success {
    background: rgba(76, 175, 80, 0.1);
    color: var(--color-success);
}

.badge-error {
    background: rgba(244, 67, 54, 0.1);
    color: var(--color-error);
}

.badge-magenta {
    background: rgba(238, 43, 205, 0.1);
    color: var(--color-accent-magenta);
    border: 1px solid rgba(238, 43, 205, 0.2);
}

.tag {
    display: inline-block;
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    border-radius: var(--border-radius-sm);
    background: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border-solid);
}

/* ============================================
   Alerts
   ============================================ */
.alert {
    padding: var(--space-md);
    border-radius: var(--border-radius);
    border-left: 4px solid;
    background: var(--color-bg-secondary);
}

.alert-error {
    border-left-color: var(--color-error);
    color: var(--color-error);
}

.alert-success {
    border-left-color: var(--color-success);
    color: var(--color-success);
}

.alert-warning {
    border-left-color: var(--color-warning);
    color: var(--color-warning);
}

.alert-info {
    border-left-color: var(--color-accent-primary);
    color: var(--color-accent-primary);
}

/* ============================================
   Toast Notifications
   ============================================ */
.toast {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    z-index: var(--z-tooltip);
    min-width: 280px;
    padding: var(--space-md);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-solid);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.3s ease;
}

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

/* ============================================
   Layout
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--color-border-solid);
}

.page-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

/* ============================================
   Modal
   ============================================ */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: var(--z-modal-backdrop);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
}

.modal {
    max-width: 480px;
    width: 90%;
    padding: var(--space-xl);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-solid);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-modal);
}

.modal-header {
    margin-bottom: var(--space-lg);
}

.modal-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
}

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

/* ============================================
   Loading States
   ============================================ */
@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        rgba(43, 205, 238, 0) 0%,
        rgba(43, 205, 238, 0.1) 50%,
        rgba(43, 205, 238, 0) 100%
    );
    background-size: 1000px 100%;
    animation: shimmer 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* ============================================
   Main Navigation
   ============================================ */
.main-nav {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
    padding: 0 var(--space-lg);
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border-solid);
}

.main-nav .logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-display);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    text-decoration: none;
}

.main-nav .logo-icon {
    width: 32px;
    height: 32px;
    background: var(--color-accent-primary);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-bg-primary);
    font-weight: var(--font-weight-bold);
    box-shadow: var(--shadow-glow);
}

.main-nav .nav-right {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.main-nav .user-info {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* ============================================
   Global Notifications
   Rationale: reuse existing avatar controls as notification trigger points and remove floating bell overlap.
   ============================================ */

.notification-avatar-trigger {
    position: relative;
    overflow: visible;
}

.notification-count-badge {
    position: absolute;
    top: -3px;
    right: -3px;
    min-width: 16px;
    height: 16px;
    padding: 0 4px;
    border-radius: var(--border-radius-full);
    background: var(--color-error);
    color: #fff;
    font-size: 10px;
    line-height: 16px;
    text-align: center;
    font-weight: var(--font-weight-bold);
}

.notifications-panel {
    position: fixed;
    top: 52px;
    right: var(--space-md);
    width: min(420px, calc(100vw - (var(--space-md) * 2)));
    max-height: min(70vh, 560px);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-solid);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 96;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.notifications-panel[hidden] {
    display: none !important;
}

.notifications-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--color-border-solid);
}

.notifications-panel-header h2 {
    margin: 0;
    font-size: var(--font-size-base);
}

.notifications-panel-body {
    overflow-y: auto;
    padding: var(--space-sm);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.notifications-item {
    padding: var(--space-sm);
    border: 1px solid var(--color-border-solid);
    border-radius: var(--border-radius);
    background: var(--color-bg-primary);
}

.notifications-item.unread {
    border-color: var(--color-accent-primary);
    box-shadow: var(--shadow-glow);
}

.notifications-item-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: var(--space-sm);
}

.notifications-item-head h3 {
    margin: 0;
    font-size: var(--font-size-sm);
}

.notifications-item-head time {
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
    white-space: nowrap;
}

.notifications-item-meta {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-xs);
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
}

.notifications-item-preview {
    margin-top: var(--space-xs);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    white-space: pre-wrap;
    word-break: break-word;
}

.notifications-item-actions {
    margin-top: var(--space-sm);
    display: flex;
    gap: var(--space-xs);
}

/* ============================================
   Avatars
   ============================================ */
.avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--border-radius-full);
    object-fit: cover;
    border: 2px solid var(--color-bg-primary);
}

.avatar-sm { width: 24px; height: 24px; }
.avatar-lg { width: 40px; height: 40px; }
.avatar-xl { width: 48px; height: 48px; }

.avatar-stack {
    display: flex;
}

.avatar-stack .avatar {
    margin-left: -8px;
}

.avatar-stack .avatar:first-child {
    margin-left: 0;
}

.avatar-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
}

.avatar-generated {
    color: transparent !important;
    font-size: 0 !important;
}

/* ============================================
   Progress Bar
   ============================================ */
.progress {
    height: 6px;
    background: var(--color-bg-deep);
    border-radius: var(--border-radius-full);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--color-accent-primary);
    border-radius: var(--border-radius-full);
    transition: width var(--transition);
}

.progress-bar.success { background: var(--color-success); }
.progress-bar.warning { background: var(--color-warning); }
.progress-bar.error { background: var(--color-error); }

/* ============================================
   Dropdown
   ============================================ */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 180px;
    padding: var(--space-xs) 0;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-solid);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-dropdown);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--transition-fast);
}

.dropdown.open .dropdown-menu,
.dropdown:focus-within .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(4px);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background: rgba(43, 205, 238, 0.1);
    color: var(--color-accent-primary);
}

.dropdown-divider {
    height: 1px;
    margin: var(--space-xs) 0;
    background: var(--color-border-solid);
}

/* ============================================
   Tabs
   ============================================ */
.tabs {
    display: flex;
    border-bottom: 1px solid var(--color-border-solid);
}

.tab {
    padding: var(--space-md);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    margin-bottom: -1px;
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
}

.tab:hover {
    color: var(--color-accent-primary);
}

.tab.active {
    color: var(--color-accent-primary);
    border-bottom-color: var(--color-accent-primary);
}

/* Dashboard tabs specific styles */
.dashboard-tabs .tab {
    padding: var(--space-sm) var(--space-md);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    border-radius: var(--border-radius);
    border-bottom: none;
    position: relative;
}

.dashboard-tabs .tab:hover {
    color: var(--color-text-primary);
    background: rgba(43, 205, 238, 0.05);
}

.dashboard-tabs .tab.active {
    color: var(--color-accent-primary);
    background: rgba(43, 205, 238, 0.1);
}

.dashboard-tabs .tab.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--color-accent-primary);
    border-radius: 1px;
}

/* ============================================
   Empty State
   ============================================ */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-2xl);
    text-align: center;
    color: var(--color-text-muted);
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: var(--space-md);
    opacity: 0.5;
}

.empty-state-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.empty-state-description {
    font-size: var(--font-size-sm);
    max-width: 300px;
}

/* ============================================
   Sidebar Navigation (Icon Nav)
   ============================================ */
.sidebar-nav {
    width: 80px;
    background: var(--color-bg-deep);
    border-right: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-xl) 0;
    z-index: 20;
    flex-shrink: 0;
}

.sidebar-logo {
    margin-bottom: var(--space-2xl);
}

.sidebar-logo .logo-icon {
    width: 40px;
    height: 40px;
    background: var(--color-accent-primary);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-bg-primary);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-xl);
    box-shadow: 0 0 15px rgba(43, 205, 238, 0.4);
}

.sidebar-nav-items {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    width: 100%;
    padding: 0 var(--space-md);
}

.sidebar-nav-bottom {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    width: 100%;
    padding: 0 var(--space-md);
    align-items: center;
}

.sidebar-nav-item {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius-lg);
    color: var(--color-text-muted);
    transition: all var(--transition);
    position: relative;
    text-decoration: none;
}

.sidebar-nav-item:hover {
    background: rgba(43, 205, 238, 0.1);
    color: var(--color-accent-primary);
}

.sidebar-nav-item.active {
    background: rgba(43, 205, 238, 0.1);
    color: var(--color-accent-primary);
}

.sidebar-nav-item.active::before {
    content: '';
    position: absolute;
    left: -12px;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 24px;
    background: var(--color-accent-primary);
    border-radius: 0 2px 2px 0;
}

.sidebar-nav-item .material-icons,
.sidebar-nav-item .material-icons-outlined {
    font-size: 24px;
}

/* ============================================
   File Menu Dropdown (Dashboard)
   ============================================ */
.file-menu-dropdown {
    min-width: 160px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-solid);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.file-menu-dropdown .dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.file-menu-dropdown .dropdown-item:hover {
    background: rgba(43, 205, 238, 0.1);
    color: var(--color-accent-primary);
}

.file-menu-dropdown .dropdown-item .material-icons {
    font-size: 18px;
    color: var(--color-text-muted);
}

.file-menu-dropdown .dropdown-item:hover .material-icons {
    color: var(--color-accent-primary);
}

.file-menu-dropdown .dropdown-item.text-error {
    color: var(--color-error);
}

.file-menu-dropdown .dropdown-item.text-error:hover {
    background: rgba(244, 67, 54, 0.1);
    color: var(--color-error);
}

.file-menu-dropdown .dropdown-item.text-error .material-icons {
    color: var(--color-error);
}

.file-menu-dropdown .dropdown-divider {
    height: 1px;
    margin: var(--space-xs) 0;
    background: var(--color-border-solid);
}

/* ============================================
   Upload Progress Container
   ============================================ */
.upload-progress-container {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    z-index: var(--z-tooltip);
    width: 320px;
    max-height: 300px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.upload-item {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-solid);
    border-radius: var(--border-radius);
    padding: var(--space-md);
    animation: slideIn 0.3s ease;
}

.upload-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-sm);
}

.upload-filename {
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 200px;
}

.upload-percentage {
    font-size: var(--font-size-sm);
    font-family: var(--font-code);
    color: var(--color-accent-primary);
    flex-shrink: 0;
}

.upload-progress-bar {
    height: 4px;
    background: var(--color-bg-deep);
    border-radius: var(--border-radius-full);
    overflow: hidden;
}

.upload-progress-fill {
    height: 100%;
    background: linear-gradient(to right, var(--color-accent-primary), var(--color-accent-magenta));
    border-radius: var(--border-radius-full);
    transition: width 0.3s ease;
}

.upload-cancel {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    font-size: var(--font-size-lg);
    line-height: 1;
    padding: 2px 6px;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
}

.upload-cancel:hover {
    background: rgba(244, 67, 54, 0.1);
    color: var(--color-error);
}

.upload-item {
    position: relative;
}

.upload-success .upload-progress-fill {
    background: var(--color-success);
}

.upload-success .upload-percentage {
    color: var(--color-success);
}

.upload-error .upload-progress-fill {
    background: var(--color-error);
}

.upload-error .upload-percentage {
    color: var(--color-error);
}

.upload-error-message {
    display: block;
    color: var(--color-error);
    font-size: var(--font-size-xs);
    margin-top: var(--space-xs);
}

.upload-dismiss {
    margin-top: var(--space-sm);
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border-solid);
    border-radius: var(--border-radius-sm);
    color: var(--color-text-secondary);
    font-size: var(--font-size-xs);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.upload-dismiss:hover {
    background: var(--color-bg-deep);
    color: var(--color-text-primary);
}

/* Spinning loader for upload state */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.upload-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-bg-deep);
    border-top-color: var(--color-accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ============================================
   Image Modal (Dashboard)
   ============================================ */
.image-modal {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(4px);
}

.image-modal-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-modal-content img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: var(--border-radius);
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.5);
}

.image-modal-close {
    position: absolute;
    top: -40px;
    right: 0;
    background: none;
    border: none;
    color: #fff;
    font-size: 32px;
    cursor: pointer;
    padding: 8px;
    line-height: 1;
    transition: color var(--transition);
}

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

/* Inline audio on dashboard */
.inline-audio {
    display: none;
}

/* ============================================
   Mobile Top Bar
   ============================================ */

.mobile-top-bar {
    display: none;
    align-items: center;
    justify-content: space-between;
    height: 56px;
    padding: 0 var(--space-md);
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border-solid);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
}

@media (max-width: 768px) {
    .mobile-top-bar {
        display: flex;
    }

    .notifications-panel {
        top: 60px;
        right: var(--space-sm);
        width: calc(100vw - (var(--space-sm) * 2));
        max-height: calc(100vh - 72px);
    }
}

.hamburger-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--color-text-primary);
    cursor: pointer;
    border-radius: var(--border-radius);
    transition: all var(--transition);
}

.hamburger-btn:hover {
    background: rgba(43, 205, 238, 0.1);
    color: var(--color-accent-primary);
}

.mobile-logo {
    font-family: var(--font-display);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.mobile-logo-icon {
    width: 28px;
    height: 28px;
    background: var(--color-accent-primary);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-bg-primary);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-sm);
}

.mobile-actions {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

/* ============================================
   Mobile Navigation Backdrop
   ============================================ */

.mobile-nav-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 85;
    opacity: 0;
    transition: opacity var(--transition);
}

.mobile-nav-backdrop.visible {
    display: block;
    opacity: 1;
}

/* ============================================
   Mobile Sidebar Navigation
   ============================================ */

@media (max-width: 768px) {
    .sidebar-nav {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        z-index: 90;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        box-shadow: var(--shadow-lg);
    }
    
    .sidebar-nav.open {
        transform: translateX(0);
    }
    
    /* When mobile nav is open, prevent body scroll */
    body.mobile-nav-open {
        overflow: hidden;
    }
}

/* ============================================
   Mobile Search
   ============================================ */

@media (max-width: 768px) {
    .search-box {
        position: static;
    }
    
    .search-input {
        width: 100%;
    }
    
    .search-input:focus {
        width: 100%;
    }
    
    .mobile-search-toggle {
        display: flex;
        width: 44px;
        height: 44px;
        align-items: center;
        justify-content: center;
        background: none;
        border: none;
        color: var(--color-text-primary);
        cursor: pointer;
        border-radius: var(--border-radius);
    }
    
    .mobile-search-toggle:hover {
        background: rgba(43, 205, 238, 0.1);
        color: var(--color-accent-primary);
    }
    
    .mobile-search-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: var(--color-bg-primary);
        z-index: 100;
        padding: var(--space-md);
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .mobile-search-overlay.visible {
        display: flex;
    }
    
    .mobile-search-header {
        display: flex;
        align-items: center;
        gap: var(--space-md);
    }
    
    .mobile-search-input {
        flex: 1;
        padding: var(--space-md);
        background: var(--color-bg-secondary);
        border: 1px solid var(--color-border-solid);
        border-radius: var(--border-radius);
        color: var(--color-text-primary);
        font-size: var(--font-size-base);
    }
    
    .mobile-search-input:focus {
        outline: none;
        border-color: var(--color-accent-primary);
    }
}

/* ============================================
   Mobile Modal Adjustments
   ============================================ */

@media (max-width: 768px) {
    .modal {
        width: 95%;
        max-width: none;
        max-height: 90vh;
        overflow-y: auto;
        margin: var(--space-md);
    }
    
    .modal-overlay {
        padding: var(--space-md);
    }
    
    .toast {
        left: var(--space-md);
        right: var(--space-md);
        bottom: var(--space-md);
        min-width: auto;
    }
}

/* ============================================
   Mobile Dropdown Adjustments
   ============================================ */

@media (max-width: 768px) {
    .dropdown-menu {
        position: fixed;
        left: var(--space-md);
        right: var(--space-md);
        bottom: var(--space-md);
        top: auto;
        width: auto;
        min-width: auto;
        border-radius: var(--border-radius-lg);
        transform: translateY(100%);
        opacity: 0;
        visibility: hidden;
    }
    
    .dropdown.open .dropdown-menu,
    .dropdown:focus-within .dropdown-menu {
        transform: translateY(0);
    }
}

/* ============================================
   Mobile Button Adjustments
   ============================================ */

@media (max-width: 768px) {
    .btn {
        padding: var(--space-sm) var(--space-md);
    }
    
    .btn-lg {
        padding: var(--space-md) var(--space-lg);
    }
    
    /* Full width buttons on mobile for primary actions */
    .btn-mobile-block {
        width: 100%;
        justify-content: center;
    }
    
    /* Hide button text on mobile, show only icon */
    .btn-mobile-icon-only .btn-text {
        display: none;
    }
}

/* ============================================
   Mobile Table Adjustments
   ============================================ */

@media (max-width: 768px) {
    .table-container {
        overflow-x: auto;
    }
    
    .table {
        min-width: 600px;
    }
    
    /* Card-style table on very small screens */
    .table-mobile-cards {
        min-width: auto;
    }
    
    .table-mobile-cards thead {
        display: none;
    }
    
    .table-mobile-cards tr {
        display: block;
        margin-bottom: var(--space-md);
        border: 1px solid var(--color-border-solid);
        border-radius: var(--border-radius);
    }
    
    .table-mobile-cards td {
        display: flex;
        justify-content: space-between;
        padding: var(--space-sm) var(--space-md);
        border-bottom: 1px solid var(--color-border-solid);
    }
    
    .table-mobile-cards td:last-child {
        border-bottom: none;
    }
    
    .table-mobile-cards td::before {
        content: attr(data-label);
        font-weight: var(--font-weight-semibold);
        color: var(--color-text-secondary);
    }
}

/* ============================================
   Mobile Card Adjustments
   ============================================ */

@media (max-width: 768px) {
    .card {
        padding: var(--space-md);
    }
    
    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }
}

/* ============================================
   Mobile Tabs Adjustments
   ============================================ */

@media (max-width: 768px) {
    .tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    
    .tabs::-webkit-scrollbar {
        display: none;
    }
    
    .tab {
        white-space: nowrap;
        flex-shrink: 0;
    }
    
    .dashboard-tabs {
        flex-wrap: nowrap;
        overflow-x: auto;
        padding-bottom: var(--space-sm);
    }
    
    .dashboard-tabs .tab-spacer {
        display: none;
    }
}

/* ============================================
   Radio Sidebar Launcher
   Rationale: keep Help/Radio entries inside existing sidebar icon menu to avoid overlap.
   ============================================ */

#radio-sidebar-launcher.sidebar-nav-item {
    border: none;
}

#radio-sidebar-launcher {
    margin-top: var(--space-xs);
}

.sidebar-nav-extra {
    margin-top: var(--space-sm);
    padding-top: var(--space-sm);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    width: 100%;
    align-items: center;
}

.sidebar-nav-bottom button.sidebar-nav-item {
    appearance: none;
    -webkit-appearance: none;
    background: transparent;
    border: none;
    padding: 0;
    margin: 0;
    line-height: 1;
}