/* ===========================
   CSS Variables — Dark Mode Palette
   =========================== */
:root {
    /* Background layers */
    --bg-body: #111113;
    --bg-surface: #1a1a1e;
    --bg-surface-hover: #252529;
    --bg-elevated: #202024;
    --bg-input: #18181c;

    /* Text */
    --text-primary: #e4e4e7;
    --text-secondary: #8b8b94;
    --text-muted: #5c5c66;

    /* Borders */
    --border-color: #2a2a2e;
    --border-color-light: #353539;

    /* Brand / accent */
    --primary: #8b5cf6;
    --primary-hover: #7c3aed;
    --primary-glow: rgba(139, 92, 246, 0.15);
    --primary-color: #8b5cf6;

    /* Status colors */
    --success: #10b981;
    --success-color: #10b981;
    --success-dark: #059669;

    --danger: #ef4444;
    --danger-color: #ef4444;
    --danger-dark: #dc2626;

    --warning: #f59e0b;
    --warning-color: #f59e0b;
    --warning-dark: #d97706;

    --info: #8b5cf6;
    --info-color: #8b5cf6;
    --info-dark: #7c3aed;

    --secondary: #6b7280;

    /* Gray scale */
    --gray-100: #1e1e22;
    --gray-200: #2a2a2e;
    --gray-300: #353539;
    --gray-400: #5c5c66;
    --gray-500: #6b6b75;
    --gray-600: #8b8b94;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);

    --border-radius: 0.5rem;
}

/* ===========================
   Base Styles
   =========================== */
html {
    font-size: 14px;
}

@media (min-width: 768px) {
    html {
        font-size: 16px;
    }
}

body {
    min-height: 100vh;
    background-color: var(--bg-body);
    color: var(--text-primary);
}

.main-content {
    margin-top: 64px;
    margin-bottom: 60px;
}

@media (min-width: 768px) {
    .main-content {
        margin-top: 76px;
    }
}

/* ===========================
   Typography
   =========================== */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-weight: 600;
}

.text-muted {
    color: var(--text-secondary) !important;
}

/* ===========================
   Navbar
   =========================== */
.navbar {
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-color) !important;
    box-shadow: 0 1px 8px rgba(0, 0, 0, 0.4);
}

.navbar-brand {
    font-weight: 700;
    color: var(--text-primary);
}

.navbar-brand:hover {
    color: var(--primary);
}

/* ===========================
   Footer
   =========================== */
footer {
    background-color: var(--bg-surface);
    border-top: 1px solid var(--border-color) !important;
    margin-top: auto;
    padding: 1rem 0;
}

footer a.text-muted {
    transition: color 0.3s ease, text-shadow 0.3s ease;
}

footer a.text-muted:hover {
    color: var(--primary) !important;
    text-shadow: 0 0 8px var(--primary-glow);
}

.luna-service-link,
.luna-service-link:visited {
    color: var(--primary);
    font-weight: 600;
    text-decoration-color: color-mix(in srgb, var(--primary) 55%, transparent);
    text-underline-offset: 0.18em;
}

.luna-service-link:hover {
    color: var(--primary-hover);
    text-shadow: 0 0 8px var(--primary-glow);
}

.luna-service-link:focus-visible {
    color: var(--primary-hover);
    border-radius: 2px;
    outline: 2px solid var(--primary);
    outline-offset: 3px;
}

/* ===========================
   Cards
   =========================== */
.card {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    background: var(--bg-surface);
    transition: box-shadow 0.2s ease, transform 0.2s ease;
    overflow: hidden;
}

.card:hover {
    box-shadow: 0 0 15px rgba(139, 92, 246, 0.08);
}

.card-header {
    background-color: var(--bg-elevated);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
}

.card-body {
    padding: 1rem;
}

.card-footer {
    background-color: var(--bg-elevated);
    border-top: 1px solid var(--border-color);
    padding: 0.75rem 1rem;
}

/* ===========================
   Stats Cards
   =========================== */
.stats-card {
    text-align: center;
    padding: 1.5rem;
}

.stats-card i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.stats-card h3 {
    font-size: 1.75rem;
    margin: 0.5rem 0 0.25rem 0;
}

.stats-card p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* ===========================
   Buttons
   =========================== */
.btn {
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: all 0.2s ease;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn:active {
    transform: translateY(0);
}

.btn-icon {
    padding: 0.375rem 0.75rem;
}

.btn-primary,
.btn-primary:hover,
.btn-primary:focus,
.btn-primary:active,
.btn-primary:disabled,
.btn-primary.disabled,
.btn-primary:first-child:active,
.btn-primary.show,
.btn-primary:active:focus-visible,
.btn-check:checked + .btn-primary,
.btn-check:active + .btn-primary {
    background-color: var(--primary) !important;
    border-color: var(--primary) !important;
}

.btn-primary:hover {
    background-color: var(--primary-hover) !important;
    border-color: var(--primary-hover) !important;
}

.btn-primary:focus-visible,
.btn-primary:active:focus-visible {
    box-shadow: 0 0 0 0.25rem var(--primary-glow) !important;
}

.btn-outline-primary,
.btn-outline-primary:disabled,
.btn-outline-primary:hover,
.btn-outline-primary:active,
.btn-outline-primary:focus,
.btn-outline-primary.show,
.btn-check:checked + .btn-outline-primary {
    color: var(--primary) !important;
    border-color: var(--primary) !important;
}

.btn-outline-primary:hover,
.btn-outline-primary:active,
.btn-outline-primary.show {
    background-color: var(--primary) !important;
    color: #fff !important;
}

.btn-outline-info,
.btn-outline-info:disabled,
.btn-outline-info:hover,
.btn-outline-info:active,
.btn-outline-info:focus {
    color: var(--primary) !important;
    border-color: var(--primary) !important;
}

.btn-outline-info:hover,
.btn-outline-info:active {
    background-color: var(--primary) !important;
    color: #fff !important;
}

/* ===========================
   Progress Bars
   =========================== */
.progress {
    height: 18px;
    border-radius: 10px;
    background-color: var(--gray-200);
    overflow: hidden;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.2);
}

.progress-bar {
    border-radius: 10px;
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    background: linear-gradient(90deg, var(--primary-color), var(--info-color));
    position: relative;
    overflow: hidden;
}

/* Shimmer + shine carried by a single composite-only translateX overlay.
 * The original used `background-position` (paint per frame) on the bar
 * itself; this moves the moving highlight onto a pseudo-element so the
 * GPU can composite it without repainting. Gradient stops are slightly
 * widened so the band's plateau is more substantial — it now carries
 * both the original shine sweep and the subtle motion the shimmer was
 * producing on the bar itself. */
.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(90deg, transparent 10%, rgba(255, 255, 255, 0.15) 50%, transparent 90%);
    animation: loading-shine 1.5s infinite;
    will-change: transform;
    contain: paint;
}

@keyframes loading-shine {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.progress-label {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 700;
    color: #fff;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    pointer-events: none;
    z-index: 1;
}

.progress-bar.bg-success {
    background: linear-gradient(90deg, var(--success-color), var(--success-dark)) !important;
}

.progress-bar.bg-danger {
    background: linear-gradient(90deg, var(--danger-color), var(--danger-dark)) !important;
}

.progress-bar.bg-warning {
    background: linear-gradient(90deg, var(--warning-color), var(--warning-dark)) !important;
}

/* Large progress bar variant (for work items) */
.progress.progress-lg {
    height: 1.5rem;
}

/* ===========================
   Work Items
   =========================== */
.work-item {
    border-left: 4px solid transparent;
    /* Targeted to the two properties the hover state actually animates.
     * `transition: all` made every SignalR-driven attribute change (class
     * flips, style updates from updateWorkItemDom) trigger transitions
     * over every computed-style delta the browser found. */
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    margin-bottom: 1rem;
    padding: 1.25rem;
    background: var(--bg-surface);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
    /* Skip layout/paint/animation work for rows scrolled out of the
     * viewport. Onscreen rows render exactly as before; offscreen rows
     * cost nothing until they scroll into view. The intrinsic size keeps
     * scrollbar height stable and prevents reflow as rows enter/exit. */
    content-visibility: auto;
    contain-intrinsic-size: 0 8rem;
}

.work-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, currentColor, transparent);
    opacity: 0.6;
}

.work-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.work-item.pending {
    border-left-color: var(--warning-color);
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.08) 0%, var(--bg-surface) 50%);
}

.work-item.pending::before {
    color: var(--warning-color);
}

.work-item.processing {
    border-left-color: var(--info-color);
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.08) 0%, var(--bg-surface) 50%);
}

.work-item.processing::before {
    color: var(--info-color);
}

.work-item.completed {
    border-left-color: var(--success-color);
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.08) 0%, var(--bg-surface) 50%);
}

.work-item.completed::before {
    color: var(--success-color);
}

.work-item.failed {
    border-left-color: var(--danger-color);
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.08) 0%, var(--bg-surface) 50%);
}

.work-item.failed::before {
    color: var(--danger-color);
}

.work-item.cancelled {
    border-left-color: var(--gray-500);
    background: linear-gradient(135deg, rgba(107, 114, 128, 0.08) 0%, var(--bg-surface) 50%);
    opacity: 0.8;
}

.work-item.cancelled::before {
    color: var(--gray-500);
}

/* ===========================
   Status Badges (glowing chips)
   =========================== */
.status-badge {
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.375rem 0.75rem;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    position: relative;
    isolation: isolate;
}

.status-pending {
    background: rgba(245, 158, 11, 0.15);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.status-processing {
    background: rgba(139, 92, 246, 0.15);
    color: #a78bfa;
    border: 1px solid rgba(139, 92, 246, 0.3);
}

/* Halo pulse: previously animated `box-shadow` spread (paint per frame).
 * Now produced by a pseudo-element with a static box-shadow whose
 * transform/opacity is animated — both composite-only properties, so
 * the GPU never repaints the halo. */
.status-processing::after,
.status-uploading::after,
.status-downloading::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    pointer-events: none;
    z-index: -1;
    animation: pulse-badge 2s ease-in-out infinite;
    will-change: transform, opacity;
}

.status-processing::after  { box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.4); }
.status-uploading::after   { box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.4); }
.status-downloading::after { box-shadow: 0 0 0 2px rgba(14, 165, 233, 0.4); }

@keyframes pulse-badge {
    0%, 100% { transform: scale(1);    opacity: 0; }
    50%      { transform: scale(1.03); opacity: 0.4; }
}

.status-completed {
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.status-failed {
    background: rgba(239, 68, 68, 0.15);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.status-cancelled {
    background: rgba(107, 114, 128, 0.15);
    color: #9ca3af;
    border: 1px solid rgba(107, 114, 128, 0.3);
}

.status-stopped {
    background: rgba(234, 179, 8, 0.15);
    color: #facc15;
    border: 1px solid rgba(234, 179, 8, 0.3);
}

.status-uploading {
    background: rgba(59, 130, 246, 0.15);
    color: #60a5fa;
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.status-downloading {
    background: rgba(14, 165, 233, 0.15);
    color: #38bdf8;
    border: 1px solid rgba(14, 165, 233, 0.3);
}

/* No-savings: the encode ran but the output wasn't kept (didn't shrink). Not an
   error and not a success — a neutral warm grey, distinct from the cool grey of
   Cancelled and the green of Completed. */
.status-nosavings {
    background: rgba(120, 113, 108, 0.18);
    color: #c8b6a6;
    border: 1px solid rgba(120, 113, 108, 0.35);
}

/* ===========================
   Queue Filter Tabs
   =========================== */
.queue-filter-btn.active {
    background-color: var(--accent-primary) !important;
    border-color: var(--accent-primary) !important;
    color: #fff !important;
}

.queue-filter-btn .badge {
    font-size: 0.7rem;
    vertical-align: middle;
}

/* ===========================
   File and Duration Info
   =========================== */
.file-size, .duration {
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', monospace;
    font-size: 0.875rem;
    color: var(--text-secondary);
    background: var(--gray-100);
    padding: 0.25rem 0.625rem;
    border-radius: 6px;
    font-weight: 500;
}

/* ===========================
   Forms
   =========================== */
.form-control,
.form-select {
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus,
.form-select:focus {
    background-color: var(--bg-input);
    border-color: var(--primary);
    color: var(--text-primary);
    box-shadow: 0 0 0 0.25rem var(--primary-glow);
}

.form-label {
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

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

.form-check-input {
    background-color: var(--bg-input);
    border-color: var(--border-color-light);
}

.form-check-input:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}

.form-check-label {
    color: var(--text-primary);
}

/* -----------------------------------------------------------------------
   Encoder-panel form-check alignment.
   Bootstrap's default .form-check / .form-switch apply padding-left: 1.5em
   / 2.5em on the container to make room for the input, then negative-margin
   the input back to position 0. Inside our encoder panels that leaves the
   label text visually indented from the section heading. We want the whole
   row (input + label) to sit flush with the heading, so we strip the
   padding, lay out as a flex row, and let form-text descriptions wrap to a
   new line aligned with the label.
   ----------------------------------------------------------------------- */
.encoder-panel .form-check {
    padding-left: 0;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    column-gap: 0.5rem;
    row-gap: 0.25rem;
}

.encoder-panel .form-check .form-check-input {
    margin-left: 0;
    margin-top: 0;
    flex-shrink: 0;
}

.encoder-panel .form-check .form-check-label {
    margin-bottom: 0;
}

/* Descriptions under a form-check row wrap to a new line aligned with the
   container's left edge — no need for the explicit ms-4 spacing used
   before these overrides existed. */
.encoder-panel .form-check .form-text {
    flex-basis: 100%;
    margin-left: 0 !important;
}

/* ===========================
   Lists
   =========================== */
.list-group-item {
    border: 1px solid var(--border-color);
    background: var(--bg-surface);
    color: var(--text-primary);
    transition: background-color 0.15s ease;
}

.list-group-item:hover {
    background-color: var(--bg-surface-hover);
}

.list-group-item.active {
    background-color: var(--primary);
    border-color: var(--primary);
}

.file-item,
.directory-item {
    padding: 0.75rem 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
}

.file-item:hover,
.directory-item:hover {
    background-color: var(--bg-surface-hover);
}

.file-item i,
.directory-item i {
    width: 20px;
    text-align: center;
}

/* ===========================
   Tables
   =========================== */
.table {
    background: var(--bg-surface);
    color: var(--text-primary);
}

.table th {
    border-top: none;
    font-weight: 600;
    color: var(--text-primary);
}

/* ===========================
    Modals
    =========================== */
.modal-content {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    background: var(--bg-elevated);
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-surface);
    color: var(--text-primary);
}

.modal-footer {
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-surface);
}

.modal-title {
    font-weight: 600;
    color: var(--text-primary);
}

.modal-body {
    background: var(--bg-elevated);
    color: var(--text-primary);
}

/* Enhanced tab styling for better UX */
.nav-tabs .nav-link {
    transition: all 0.2s ease;
    border-radius: var(--border-radius);
    margin-bottom: -1px;
}

.nav-tabs .nav-link:hover,
.nav-tabs .nav-link:focus {
    color: var(--primary);
    background-color: var(--bg-surface-hover);
    border-color: transparent;
}

.nav-tabs .nav-link.active {
    color: var(--primary) !important;
    background-color: var(--bg-surface);
    border-color: var(--border-color) var(--border-color) var(--bg-surface);
    font-weight: 600;
    box-shadow: inset 0 -2px 0 var(--primary);
}

/* Improved form elements */
.form-control,
.form-select {
    transition: all 0.2s ease;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 0.25rem var(--primary-glow);
    transform: translateY(-1px);
}

/* Enhanced button hover effects */
.btn {
    transition: all 0.2s ease;
}

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

.btn:active {
    transform: translateY(0);
}

/* Enhanced encoder panel hover */
.encoder-panel {
    transition: all 0.3s ease;
    border: 1px solid var(--border-color) !important;
}

.encoder-panel:hover {
    border-color: var(--primary);
    box-shadow: 0 0 0 0.2rem var(--primary-glow);
}

/* ===========================
   Badges
   =========================== */
.badge {
    font-weight: 500;
    padding: 0.35em 0.65em;
}

/* ===========================
   Custom Scrollbars
   =========================== */
.scrollable {
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 255, 255, 0.15) transparent;
}

.scrollable::-webkit-scrollbar {
    width: 8px;
}

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

.scrollable::-webkit-scrollbar-thumb {
    background-color: rgba(255, 255, 255, 0.15);
    border-radius: 4px;
}

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

/* Global scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-body);
}

::-webkit-scrollbar-thumb {
    background-color: rgba(255, 255, 255, 0.12);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

/* ===========================
   Directory/File Browsers
   =========================== */
.directory-list,
.file-list {
    max-height: 450px;
    overflow-y: auto;
}

.current-path {
    padding: 0.5rem 1rem;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 0.5rem;
    font-family: monospace;
    font-size: 0.875rem;
    color: var(--text-primary);
}

/* ===========================
   Toast Notifications
   =========================== */
.toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 1090;
}

.toast {
    border: none;
    box-shadow: var(--shadow-lg);
}

.toast-header {
    font-weight: 600;
}

.bg-primary {
    background-color: var(--primary) !important;
}

.bg-info {
    background-color: var(--primary) !important;
}

.text-primary {
    color: var(--primary) !important;
}

.text-info {
    color: var(--primary) !important;
}

.border-info {
    border-color: var(--primary) !important;
}

.nav-tabs .nav-link {
    color: var(--text-secondary);
}

.nav-tabs .nav-link:hover,
.nav-tabs .nav-link:focus {
    color: var(--primary);
    border-color: transparent;
}

.nav-tabs .nav-link.active {
    color: var(--primary) !important;
    background-color: var(--bg-surface);
    border-color: var(--border-color) var(--border-color) var(--bg-surface);
}

.nav-tabs {
    border-bottom-color: var(--border-color);
}

/* ===========================
   Queue Section
   =========================== */
#queueSection {
    margin-top: 2rem;
}

.queue-item {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-bottom: 1rem;
    box-shadow: var(--shadow-sm);
}

.queue-item h5 {
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.queue-item .progress {
    margin-top: 0.5rem;
}

/* ===========================
   Log Viewer (Terminal Style)
   =========================== */
#logContent {
    max-height: 500px;
    overflow-y: auto;
    background-color: #0c0c0e;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 0.75rem;
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.8rem;
    line-height: 1.4;
    word-wrap: break-word;
    overflow-wrap: break-word;
    color: #22c55e;
    text-shadow: 0 0 2px rgba(34, 197, 94, 0.3);
}

#logContent .log-entry {
    margin-bottom: 0.15rem;
    padding: 0.1rem 0;
}

#logContent .text-muted {
    color: #4ade80 !important;
    opacity: 0.7;
}

/* ===========================
   Encoder Options Panels
   =========================== */
.encoder-panel {
    background: var(--bg-elevated);
    border: 1px solid var(--border-color) !important;
    border-radius: var(--border-radius);
    padding: 1rem;
}

/* ===========================
   Utility Classes
   =========================== */
.text-truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.cursor-pointer {
    cursor: pointer;
}

.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 1rem; }
.gap-4 { gap: 1.5rem; }

.hover-lift {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.hover-lift:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.shadow-glow {
    box-shadow: 0 0 20px var(--primary-glow);
}

.shadow-glow:hover {
    box-shadow: 0 0 30px rgba(139, 92, 246, 0.25);
}

/* ===========================
   Responsive Adjustments
   =========================== */
/* ===========================
   Mobile Stats Strip
   =========================== */
.stats-strip {
    display: flex;
    justify-content: space-around;
    align-items: center;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 0.5rem 0;
}

.stats-strip-item {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.stats-strip-item i {
    font-size: 0.85rem;
}

.stats-strip-item span {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* ===========================
   Tablet (768px - 1199px)
   =========================== */
@media (max-width: 1199px) {
    /* Tighter modal padding at tablet sizes */
    .modal-body {
        padding: 0.75rem;
    }

    .modal-footer {
        padding: 0.5rem 0.75rem;
    }

    /* Library browser: reduce inner padding */
    #directoryList,
    #fileList {
        padding: 0.5rem !important;
    }

    /* Encoder options panels need less padding */
    .encoder-panel {
        padding: 0.75rem;
    }

    .encoder-panel .mb-3 {
        margin-bottom: 0.5rem !important;
    }

    .encoder-panel .form-text {
        font-size: 0.75rem;
    }
}

/* Library browser: compact directory action items */
@media (max-width: 1199px) {
    .directory-item {
        font-size: 0.85rem;
        padding: 0.35rem 0.5rem !important;
    }
}

/* Tablet: shorter lists when library browser stacks (below lg breakpoint) */
@media (max-width: 991px) {
    #directoryList {
        height: 200px !important;
    }

    #fileList {
        height: 300px !important;
        margin-top: 0.5rem;
    }

    /* Settings: stack to single column below lg */
    #settingsModal .col-md-6 {
        width: 100%;
    }
}

@media (max-width: 768px) {
    /* Compact header */
    .display-6 {
        font-size: 1.1rem;
    }

    /* Compact cards */
    .card-header {
        padding: 0.4rem 0.6rem;
    }

    .card-header h5 {
        font-size: 0.85rem;
    }

    .card-body {
        padding: 0.5rem;
    }

    /* Compact work items */
    .work-item {
        padding: 0.6rem;
        margin-bottom: 0.4rem;
    }

    .work-item strong {
        font-size: 0.8rem;
        word-break: break-word;
        white-space: normal;
    }

    .work-item small {
        font-size: 0.7rem;
    }

    .status-badge {
        font-size: 0.55rem;
        padding: 0.15rem 0.4rem;
    }

    /* Progress bar */
    .progress {
        height: 18px;
        font-size: 0.65rem;
    }

    /* Buttons */
    .shadow-glow {
        box-shadow: none;
    }

    .btn-group .btn-sm {
        padding: 0.2rem 0.4rem;
        font-size: 0.75rem;
    }

    /* Complex modals go fullscreen on mobile — simple dialogs stay normal */
    .modal-fullscreen-mobile .modal-dialog {
        margin: 0;
        max-width: 100%;
        height: 100%;
    }

    .modal-fullscreen-mobile .modal-content {
        height: 100%;
        border: none;
        border-radius: 0;
    }

    .modal-body {
        padding: 0.5rem;
    }

    /* Log viewer */
    #logContent {
        font-size: 0.7rem;
        max-height: 300px;
    }

    /* Encoder options */
    .encoder-panel {
        padding: 0.5rem;
    }

    .hover-lift:hover {
        transform: none;
    }
}

/* ===========================
   Loading States
   =========================== */
.spinner-border-sm {
    width: 1rem;
    height: 1rem;
    border-width: 0.15em;
}

/* ===========================
   Empty States
   =========================== */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state p {
    margin: 0;
}

/* ===========================
   Alerts (dark-friendly overrides)
   =========================== */
.alert-danger {
    background-color: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.25);
    color: #f87171;
}

/* ===========================
   Border utility for browser panels
   =========================== */
.border {
    border-color: var(--border-color) !important;
}

.border-bottom {
    border-bottom-color: var(--border-color) !important;
}

/* ===========================
   SnacksModal — custom modal system
   =========================== */
.snacks-modal-backdrop {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: var(--snacks-modal-z, 9000);
    background: rgba(0, 0, 0, 0.55);
    overflow: auto;
}

.snacks-modal-backdrop.open {
    display: block;
    animation: snacksBackdropIn 0.15s linear;
}

.snacks-modal-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100%;
    padding: 1.75rem;
}

.snacks-modal-dialog {
    position: relative;
    width: 100%;
    max-width: 900px;
    max-height: 85vh;
    background: var(--bg-surface, #1a1a1e);
    color: var(--text-primary, #e4e4e7);
    border: 1px solid var(--border-color, #2a2a2e);
    border-radius: 0.5rem;
    box-shadow: 0 0.5rem 2rem rgba(0, 0, 0, 0.6);
    display: flex;
    flex-direction: column;
    margin: 0 auto;
}

.snacks-modal-backdrop.open .snacks-modal-dialog {
    animation: snacksDialogIn 0.3s ease-out;
}

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

@keyframes snacksDialogIn {
    from { transform: translateY(-50px); opacity: 0; }
    to   { transform: translateY(0); opacity: 1; }
}

/* Explicit padding overrides for Bootstrap modal-header/body/footer inside our custom dialog.
   Bootstrap 5 expects these to live under a .modal parent that sets CSS variables;
   since .snacks-modal-dialog is not .modal, we apply the padding directly. */
.snacks-modal-dialog > .modal-header {
    padding: 1rem 1rem;
    border-bottom: 1px solid var(--border-color, #2a2a2e);
    border-top-left-radius: 0.5rem;
    border-top-right-radius: 0.5rem;
    background-color: var(--bg-surface, #1a1a1e);
}

.snacks-modal-dialog > .modal-body {
    padding: 1rem;
    overflow-y: auto;
    flex-grow: 1;
    background-color: var(--bg-elevated, #202024);
}

.snacks-modal-dialog > .modal-footer {
    padding: 1rem 1rem;
    border-top: 1px solid var(--border-color, #2a2a2e);
    border-bottom-left-radius: 0.5rem;
    border-bottom-right-radius: 0.5rem;
    background-color: var(--bg-surface, #1a1a1e);
    gap: 0.5rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
}

/* Ensure first/last children get proper border-radius even if the order varies */
.snacks-modal-dialog > :first-child {
    border-top-left-radius: 0.5rem;
    border-top-right-radius: 0.5rem;
}

.snacks-modal-dialog > :last-child {
    border-bottom-left-radius: 0.5rem;
    border-bottom-right-radius: 0.5rem;
}


/* ===========================
   Settings: Horizontal Swipeable Tabs
   =========================== */
.settings-tabs-wrapper {
    position: relative;
    display: flex;
    align-items: stretch;
}

.settings-tabs-wrapper .settings-tabs {
    flex: 1 1 auto;
    flex-wrap: nowrap;
    overflow-x: auto;
    scroll-behavior: smooth;
    scrollbar-width: none;
    -ms-overflow-style: none;
    -webkit-overflow-scrolling: touch;
    border-bottom: 1px solid var(--border-color);
    margin: 0;
    padding: 0;
    scroll-snap-type: x proximity;
}
.settings-tabs-wrapper .settings-tabs::-webkit-scrollbar { display: none; }

.settings-tabs-wrapper .settings-tabs .nav-item {
    flex: 0 0 auto;
    scroll-snap-align: start;
}
.settings-tabs-wrapper .settings-tabs .nav-link {
    white-space: nowrap;
    border: 1px solid transparent;
    border-bottom: none;
    transition: color 0.15s ease, background 0.15s ease;
}

.settings-tab-arrow {
    flex: 0 0 auto;
    display: none;
    align-items: center;
    justify-content: center;
    width: 34px;
    background: linear-gradient(90deg, var(--bg-surface, #fff), transparent);
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0 0.25rem;
    z-index: 2;
    transition: opacity 0.2s ease, color 0.15s ease;
}
.settings-tab-arrow:hover { color: var(--primary); }
.settings-tab-arrow.visible { display: inline-flex; }
.settings-tab-arrow.disabled { opacity: 0.25; pointer-events: none; }
.settings-tab-arrow-right {
    background: linear-gradient(270deg, var(--bg-surface, #fff), transparent);
}

/* ===========================
   Chip input (language / pattern lists)
   =========================== */
.chip-input {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.35rem;
    padding: 0.375rem 0.5rem;
    border: 1px solid var(--border-color, #ced4da);
    border-radius: 0.375rem;
    background: var(--bg-surface, #fff);
    min-height: 38px;
}
.chip-input .chip-list {
    display: contents;
}
.chip-input .chip {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.15rem 0.55rem;
    background: rgba(13, 110, 253, 0.12);
    color: var(--primary, #0d6efd);
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 500;
}
.chip-input .chip .chip-remove {
    background: none;
    border: none;
    color: inherit;
    opacity: 0.6;
    cursor: pointer;
    padding: 0;
    line-height: 1;
    font-size: 0.8rem;
}
.chip-input .chip .chip-remove:hover { opacity: 1; }
.chip-input .chip-new {
    flex: 1 1 140px;
    min-width: 80px;
    border: none;
    outline: none;
    padding: 0.25rem;
    background: transparent;
    font-size: 0.9rem;
}
.chip-input .chip-new.chip-input-invalid {
    background: rgba(220, 53, 69, 0.12);
    box-shadow: inset 0 0 0 1px rgba(220, 53, 69, 0.6);
    border-radius: 0.25rem;
    animation: chip-shake 0.3s;
}
@keyframes chip-shake {
    0%, 100% { transform: translateX(0);    }
    25%      { transform: translateX(-3px); }
    75%      { transform: translateX( 3px); }
}

.chip-input { position: relative; }
.chip-suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-top: 2px;
    z-index: 20;
    max-height: 14rem;
    overflow-y: auto;
    background: var(--bg-surface, #fff);
    border: 1px solid var(--border-color, #ced4da);
    border-radius: 0.375rem;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}
.chip-suggestion {
    display: flex;
    align-items: baseline;
    gap: 0.6rem;
    padding: 0.35rem 0.6rem;
    cursor: pointer;
    font-size: 0.85rem;
}
.chip-suggestion.active,
.chip-suggestion:hover { background: rgba(13, 110, 253, 0.1); }
.chip-suggestion-code {
    font-weight: 600;
    font-family: var(--bs-font-monospace, monospace);
    color: var(--primary, #0d6efd);
    min-width: 1.8rem;
}
.chip-suggestion-name { color: var(--text-muted, #6c757d); }

/* Drag-to-reorder chips (data-reorderable="true" on the .chip-input root) */
.chip-input[data-reorderable="true"] .chip {
    cursor: grab;
    user-select: none;
}
.chip-input[data-reorderable="true"] .chip:focus-visible {
    outline: 2px solid var(--primary, #0d6efd);
    outline-offset: 1px;
}
.chip-input .chip-grip {
    display: inline-flex;
    align-items: center;
    color: currentColor;
    opacity: 0.55;
    font-size: 0.7rem;
    cursor: grab;
}
.chip-input .chip.chip-dragging {
    opacity: 0.5;
    cursor: grabbing;
}
.chip-input .chip.chip-drop-before {
    box-shadow: -3px 0 0 0 var(--primary, #0d6efd);
}
.chip-input .chip.chip-drop-after {
    box-shadow:  3px 0 0 0 var(--primary, #0d6efd);
}

/* ===========================
   Folder picker rows
   =========================== */
.folder-picker-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.5rem;
    border-radius: 0.25rem;
    cursor: pointer;
    transition: background 0.12s ease;
}
.folder-picker-row:hover { background: rgba(13, 110, 253, 0.08); }
.folder-picker-row.active { background: rgba(13, 110, 253, 0.18); }
.folder-picker-row .fa-folder { color: #e0b95b; }
.folder-picker-row .folder-picker-name { flex: 1 1 auto; }
.folder-picker-row .folder-picker-expand {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 0 0.25rem;
}

.notification-dest-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    margin-bottom: 0.35rem;
    background: rgba(0,0,0,0.02);
}
.notification-dest-row .badge { flex: 0 0 auto; }
.notification-dest-row .dest-url { flex: 1 1 auto; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 0.85rem; }

@media (max-width: 768px) {
    .settings-tab-arrow { width: 28px; }
    .settings-tabs-wrapper .settings-tabs .nav-link {
        padding: 0.5rem 0.75rem;
        font-size: 0.9rem;
    }
}

/* ===========================
   Cluster Card Hardware Chips
   =========================== */
.cluster-card .cluster-card-body {
    position: relative;
    overflow: hidden;
}

/* Top-right chip stack — chips don't push card content down because they're
   absolutely positioned. The title row reserves space via padding-right so
   hostnames truncate cleanly instead of running under the chips. */
.cluster-card-chips {
    position: absolute;
    top: 0.45rem;
    right: 0.45rem;
    display: flex;
    flex-direction: column;
    gap: 3px;
    align-items: flex-end;
    z-index: 1;
    pointer-events: none;
    max-width: 55%;
}

.cluster-card-title {
    padding-right: 4.5rem;       /* Room for the chip stack */
}

.device-chip-mini {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    padding: 0.12rem 0.4rem;
    border-radius: 999px;
    border: 1px solid var(--border-color);
    background: var(--bg-elevated);
    color: var(--text-secondary);
    white-space: nowrap;
    pointer-events: auto;        /* tooltips need hover */
    line-height: 1.2;
    font-variant-numeric: tabular-nums;
    transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.device-chip-mini.state-idle {
    /* No active jobs — muted slate. */
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.02);
}
.device-chip-mini.state-busy {
    /* Some slots in use, headroom available — primary brand glow. */
    color: #c4b5fd;
    background: rgba(139, 92, 246, 0.16);
    border-color: rgba(139, 92, 246, 0.45);
    box-shadow: 0 0 6px rgba(139, 92, 246, 0.25);
}
.device-chip-mini.state-full {
    /* Saturated — warm amber so it reads "running flat out" at a glance. */
    color: #fcd34d;
    background: rgba(245, 158, 11, 0.18);
    border-color: rgba(245, 158, 11, 0.5);
    box-shadow: 0 0 6px rgba(245, 158, 11, 0.25);
}
.device-chip-mini.state-off {
    /* User-disabled — strikethrough cue without making it disappear. */
    color: var(--text-muted);
    opacity: 0.55;
    text-decoration: line-through;
}

/* ===========================
   Dashboard Page
   =========================== */
.dashboard-page .range-btn { min-width: 3rem; }
.dashboard-page .range-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

/* Hero stat cards — gradient corner washes match the work-item palette. */
.hero-card { position: relative; overflow: hidden; }
.hero-card .card-body { padding: 1.25rem 1.25rem 1rem; }
.hero-saved  { background: linear-gradient(135deg, rgba(139, 92, 246, 0.15) 0%, var(--bg-surface) 60%); border-left: 3px solid var(--primary); }
.hero-files  { background: linear-gradient(135deg, rgba(14, 165, 233, 0.13) 0%, var(--bg-surface) 60%); border-left: 3px solid #0ea5e9; }
.hero-hours  { background: linear-gradient(135deg, rgba(245, 158, 11, 0.13) 0%, var(--bg-surface) 60%); border-left: 3px solid var(--warning); }
.hero-ratio  { background: linear-gradient(135deg, rgba(16, 185, 129, 0.13) 0%, var(--bg-surface) 60%); border-left: 3px solid var(--success); }

.hero-label {
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
}
.hero-icon { color: var(--text-muted); font-size: 1rem; opacity: 0.7; }
.hero-value {
    font-size: 2.25rem;
    font-weight: 700;
    line-height: 1.1;
    color: var(--text-primary);
    margin: 0.25rem 0;
    font-variant-numeric: tabular-nums;
}
.hero-saved .hero-value { color: #c4b5fd; }
.hero-files .hero-value { color: #7dd3fc; }
.hero-hours .hero-value { color: #fcd34d; }
.hero-ratio .hero-value { color: #6ee7b7; }
.hero-subtext {
    font-size: 0.78rem;
    color: var(--text-muted);
    min-height: 1.1em;
    margin-bottom: 0.5rem;
}
.hero-spark {
    width: 100%;
    height: 32px;
    display: block;
    opacity: 0.95;
}

/* Chart card frame */
.chart-card .card-body { padding: 1rem; }

.savings-chart {
    width: 100%;
    height: 280px;
    display: block;
}
.savings-legend {
    display: flex;
    gap: 1rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
    padding-left: 56px;
}
.savings-legend .dot,
.codec-legend .dot,
.device-row .dot,
.dashboard-page .dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 6px;
    vertical-align: middle;
}

/* Device workload */
.device-util-container { display: flex; flex-direction: column; gap: 0.85rem; }
.device-row { display: flex; flex-direction: column; gap: 0.3rem; }
.device-row-head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 0.25rem;
}
.device-name { font-weight: 600; color: var(--text-primary); font-size: 0.85rem; letter-spacing: 0.03em; }
.device-stats { font-size: 0.72rem; color: var(--text-muted); }
.device-bar {
    height: 8px;
    background: var(--bg-elevated);
    border-radius: 999px;
    overflow: hidden;
    position: relative;
}
.device-bar-fill {
    height: 100%;
    border-radius: 999px;
    transition: width 0.4s ease;
    box-shadow: 0 0 8px currentColor;
}

/* Codec donut */
.codec-mix-body { display: flex; gap: 1rem; align-items: center; flex-wrap: wrap; }
.codec-donut { width: 200px; height: 200px; flex: 0 0 auto; }
.codec-legend { flex: 1; display: flex; flex-direction: column; gap: 0.5rem; min-width: 120px; }
.codec-legend-item {
    display: grid;
    grid-template-columns: auto auto 1fr auto;
    align-items: baseline;
    gap: 0.4rem;
    font-size: 0.85rem;
}
.codec-legend-pct { color: var(--text-primary); font-weight: 600; font-variant-numeric: tabular-nums; }
.codec-legend-sub { color: var(--text-muted); font-size: 0.7rem; text-align: right; }

/* Node throughput */
.node-throughput { display: flex; flex-direction: column; gap: 0.7rem; }
.node-row { display: flex; flex-direction: column; gap: 0.3rem; }
.node-row-head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 0.25rem;
}
.node-name { font-weight: 600; color: var(--text-primary); font-size: 0.85rem; }
.node-stats { font-size: 0.72rem; color: var(--text-muted); }
.node-bar { height: 6px; background: var(--bg-elevated); border-radius: 999px; overflow: hidden; }
.node-bar-fill {
    height: 100%;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--primary), #c4b5fd);
    transition: width 0.4s ease;
}

/* Tables */
.dash-table-wrap { max-height: 480px; overflow-y: auto; }
.dash-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
.dash-table thead th {
    position: sticky; top: 0;
    background: var(--bg-elevated);
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 0.04em;
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid var(--border-color);
}
.dash-table tbody td {
    padding: 0.6rem 0.75rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    vertical-align: middle;
}
.dash-table tbody tr:hover { background: rgba(139, 92, 246, 0.04); }

/* The file cell stays a normal table-cell so its width tracks the column model and
   the sticky header stays aligned with the body. `display:flex` on the <td> itself
   pulls it out of the table layout and drifts the header columns out of alignment —
   so the flex row lives on an inner wrapper instead. */
.dash-file { max-width: 320px; }
.dash-file-inner { display: flex; align-items: center; gap: 0.5rem; min-width: 0; }
.dash-fileicon {
    flex: 0 0 auto;
    width: 28px;
    height: 28px;
    border-radius: 6px;
    background: rgba(139, 92, 246, 0.12);
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
}
.dash-filename {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
    min-width: 0;
}
.dash-codec { white-space: nowrap; }
.dash-arrow { font-size: 0.7rem; margin: 0 0.3rem; }
.dash-size, .dash-saved, .dash-when { font-variant-numeric: tabular-nums; white-space: nowrap; }
.dash-when { color: var(--text-muted); font-size: 0.75rem; }

.codec-pill {
    display: inline-block;
    background: var(--bg-elevated);
    color: var(--text-secondary);
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    border: 1px solid var(--border-color);
}
.codec-pill-after {
    background: rgba(139, 92, 246, 0.15);
    color: #c4b5fd;
    border-color: rgba(139, 92, 246, 0.4);
}

.device-chip {
    display: inline-block;
    background: rgba(255, 255, 255, 0.04);
    color: var(--c, var(--text-primary));
    padding: 0.15rem 0.55rem;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    border: 1px solid currentColor;
}

.ratio-pill {
    display: inline-block;
    background: rgba(16, 185, 129, 0.12);
    color: #6ee7b7;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    font-weight: 700;
    font-size: 0.85rem;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

/* Hover tooltip */
.dash-tooltip {
    position: absolute;
    display: none;
    pointer-events: none;
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.5rem 0.75rem;
    font-size: 0.78rem;
    color: var(--text-primary);
    box-shadow: var(--shadow-lg);
    z-index: 10000;
    line-height: 1.4;
    white-space: nowrap;
}

@media (max-width: 768px) {
    .hero-value { font-size: 1.65rem; }
    .savings-chart { height: 220px; }
    .codec-donut { width: 160px; height: 160px; }
    .dash-file { max-width: 220px; }
}

/* =========================================================================
   Per-node scheduling panel — day-of-week chips and section accordion
   ========================================================================= */

.scheduling-day-chips {
    display: inline-flex;
    gap: 4px;
}

.scheduling-day-chips .day-chip {
    width: 32px;
    padding: 0.25rem 0;
    font-weight: 600;
    font-size: 0.85rem;
}

.scheduling-day-chips .day-chip.active {
    background-color: var(--bs-purple, #6f42c1);
    color: #fff;
    border-color: var(--bs-purple, #6f42c1);
}

.scheduling-node-section > summary {
    cursor: pointer;
    list-style: none;
    user-select: none;
    background: rgba(0, 0, 0, 0.025);
}

.scheduling-node-section > summary::-webkit-details-marker { display: none; }

.scheduling-node-section .scheduling-node-caret {
    transition: transform 0.15s ease;
    width: 0.75rem;
}

.scheduling-node-section[open] > summary .scheduling-node-caret {
    transform: rotate(90deg);
}

.scheduling-window-row {
    padding: 0.4rem 0.5rem;
    border-radius: 6px;
    background: rgba(0, 0, 0, 0.02);
}

/* ---------------------------------------------------------------------------
   Library Health page — summary cards that double as issue filters
   --------------------------------------------------------------------------- */

.health-filter-card {
    /* <button class="card"> — strip button chrome, keep card visuals */
    appearance: none;
    cursor: pointer;
    transition: border-color 0.15s ease, transform 0.15s ease;
}

.health-filter-card:hover {
    transform: translateY(-1px);
}

.health-filter-card.active {
    border-color: var(--primary, #8b5cf6);
    box-shadow: 0 0 0 1px var(--primary, #8b5cf6);
}

/* ---------------------------------------------------------------------------
   Quality preset cards (settings → General)
   --------------------------------------------------------------------------- */

.preset-card {
    appearance: none;
    cursor: pointer;
    transition: border-color 0.15s ease, transform 0.15s ease;
}

.preset-card:hover {
    transform: translateY(-1px);
    border-color: var(--primary, #8b5cf6);
}

.preset-card.active {
    border-color: var(--primary, #8b5cf6);
    box-shadow: 0 0 0 1px var(--primary, #8b5cf6);
}

/* ---------------------------------------------------------------------------
   Settings — section titles inside merged tab panes (Video+Mode, Audio+Subs,
   Cluster+Networking+Scheduling, Security+Advanced)
   --------------------------------------------------------------------------- */

.settings-section-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary, #e5e7eb);
    border-bottom: 1px solid var(--border-color, rgba(255, 255, 255, 0.1));
    padding-bottom: 0.4rem;
    margin-bottom: 1rem;
}

/* ---------------------------------------------------------------------------
   Settings — env-locked controls (values driven by SNACKS_* environment
   variables; the server re-applies them on load and strips them from saves)
   --------------------------------------------------------------------------- */

.env-locked {
    opacity: 0.65;
    cursor: not-allowed;
}

.env-locked-container {
    opacity: 0.65;
    pointer-events: none;
}

.env-locked-badge {
    cursor: help;
}

.env-locked-note {
    color: var(--text-secondary, #9ca3af);
}

/* ===========================
   Advanced Video: decision flow, recipes, library impact
   =========================== */
.av-section-head {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.av-step {
    flex: 0 0 auto;
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 50%;
    background: var(--primary-glow);
    color: var(--primary);
    border: 1px solid var(--primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
}

.av-flow {
    position: relative;
    padding-left: 1.25rem;
}

/* The rail: the literal path a file falls down. */
.av-flow::before {
    content: "";
    position: absolute;
    left: 0.55rem;
    top: 0.75rem;
    bottom: 0.75rem;
    width: 2px;
    background: linear-gradient(var(--primary), var(--border-color-light));
}

.av-flow-node {
    position: relative;
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 0.6rem 0.9rem;
    margin: 0.5rem 0;
    color: var(--text-secondary);
}

.av-flow-node::before,
.av-rule-card::before {
    content: "";
    position: absolute;
    left: -0.98rem;
    top: 50%;
    width: 0.65rem;
    height: 2px;
    background: var(--border-color-light);
}

.av-flow-source {
    color: var(--text-primary);
    border-style: dashed;
}

.av-flow-default {
    border-left: 3px solid var(--gray-400);
}

.av-flow-empty {
    border-style: dashed;
}

.av-rule-card {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--primary);
    border-radius: var(--border-radius);
    padding: 0.5rem 0.75rem;
    margin: 0.5rem 0;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.av-rule-card:hover {
    border-color: var(--primary);
}

.av-rule-card.selected {
    border-color: var(--primary);
    box-shadow: 0 0 0 0.15rem var(--primary-glow);
}

.av-rule-card.paused {
    opacity: 0.55;
    border-left-color: var(--gray-400);
}

.av-flow-num {
    flex: 0 0 auto;
    width: 1.4rem;
    height: 1.4rem;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
}

.av-rule-card.paused .av-flow-num {
    background: var(--gray-400);
}

.av-rule-main {
    flex: 1 1 auto;
    min-width: 0;
    background: none;
    border: none;
    text-align: left;
    padding: 0;
    color: var(--text-primary);
    cursor: pointer;
}

.av-rule-name {
    display: block;
    font-weight: 600;
}

.av-rule-sentence {
    display: block;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.av-rule-actions {
    flex: 0 0 auto;
    display: inline-flex;
    gap: 0.25rem;
}

.av-count-badge {
    background: var(--primary-glow);
    color: var(--primary);
    border: 1px solid var(--primary);
    font-variant-numeric: tabular-nums;
}

.av-editor-panel {
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--primary);
    border-radius: var(--border-radius);
    padding: 0.9rem;
}

.av-args-strip {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 0.5rem 0.75rem;
}

.av-args-strip pre {
    white-space: pre-wrap;
    word-break: break-word;
    font-size: 0.8rem;
    color: var(--success);
}

.av-impact-bar {
    display: flex;
    height: 1.6rem;
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.av-impact-seg {
    display: block;
    min-width: 4px;
}

.av-impact-row {
    display: flex;
    align-items: baseline;
    gap: 0.6rem;
    padding: 0.25rem 0;
}

.av-impact-swatch {
    flex: 0 0 auto;
    width: 0.8rem;
    height: 0.8rem;
    border-radius: 3px;
    align-self: center;
}

.av-impact-count {
    flex: 0 0 auto;
    min-width: 3rem;
    text-align: right;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

.av-impact-samples ul {
    list-style: none;
    padding-left: 1.4rem;
    margin: 0.25rem 0 0;
}

/* Impact recalculating: keep old content readable but visibly stale. */
.av-impact-pending {
    opacity: 0.55;
    transition: opacity 0.2s ease;
}

/* Reorder affordance: the card a dragged rule would land on. */
.av-rule-card.av-drop-target {
    border-top: 3px solid var(--primary);
}

/* Hypothetical-tester result: the card (or default node) the sample landed on. */
.av-rule-card.matched,
.av-flow-default.matched {
    border-color: var(--success);
    box-shadow: 0 0 0 0.15rem rgba(16, 185, 129, 0.25);
}

.av-matched-badge {
    font-size: 0.65rem;
    vertical-align: middle;
}

/* Statically unreachable rule: warning tone without killing readability. */
.av-rule-card.shadowed {
    border-left-color: var(--warning);
}

.av-rule-shadowed {
    display: block;
    color: var(--warning);
    font-size: 0.8rem;
    margin-top: 0.15rem;
}

.av-user-template {
    position: relative;
}

.av-user-template .av-user-template-delete {
    position: absolute;
    right: 0.35rem;
    bottom: 0.35rem;
    padding: 0.05rem 0.4rem;
    line-height: 1.2;
}

.av-impact-matches ul {
    list-style: none;
    padding-left: 0;
    margin: 0;
}

/* Phone-width pass: cards stack their controls instead of crowding one row. */
@media (max-width: 576px) {
    .av-rule-card {
        flex-wrap: wrap;
    }

    .av-rule-main {
        flex-basis: calc(100% - 2.2rem);
    }

    .av-rule-actions {
        margin-left: 2rem;
    }

    .av-count-badge {
        order: 5;
        margin-left: 2rem;
    }

    .av-section-head {
        flex-wrap: wrap;
    }

    .av-impact-row {
        flex-wrap: wrap;
    }
}