/* ===========================
   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);
}

/* ===========================
   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);
}

/* ===========================
   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));
    background-size: 200% 100%;
    animation: shimmer 2s infinite;
    position: relative;
    overflow: hidden;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
    animation: loading-shine 1.5s infinite;
}

@keyframes shimmer {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@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;
    transition: all 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;
}

.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;
}

.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);
    animation: pulse-badge 2s ease-in-out infinite;
}

@keyframes pulse-badge {
    0%, 100% { box-shadow: 0 0 0 0 rgba(139, 92, 246, 0.4); }
    50% { box-shadow: 0 0 0 6px rgba(139, 92, 246, 0); }
}

.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);
    animation: pulse-badge 2s ease-in-out infinite;
}

.status-downloading {
    background: rgba(14, 165, 233, 0.15);
    color: #38bdf8;
    border: 1px solid rgba(14, 165, 233, 0.3);
    animation: pulse-badge 2s ease-in-out infinite;
}

/* ===========================
   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);
}

/* ===========================
   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);
}

/* ===========================
   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-card);
    border-color: var(--border-color) var(--border-color) var(--bg-card);
}

.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;
}