/* === Custom Theme Variables === */

:root[data-theme="dark"] {
    --accent: #00d4ff;
    --accent-alt: #7b61ff;
    --glow: rgba(0, 212, 255, 0.25);
    --glow-alt: rgba(123, 97, 255, 0.25);
    --glass-bg: rgba(255, 255, 255, 0.04);
    --glass-border: rgba(255, 255, 255, 0.08);
    --pico-primary: var(--accent);
    --pico-primary-hover: #33ddff;
    --pico-primary-focus: rgba(0, 212, 255, 0.15);
}

/* === Global === */

body {
    background: #0b0e14;
}

* {
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, opacity 0.2s ease;
}

/* === Header === */

.site-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-header h1 {
    margin-bottom: 0;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.grad {
    background: linear-gradient(135deg, var(--accent), var(--accent-alt));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.lang-wrapper {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.lang-icon {
    width: 18px;
    height: 18px;
    color: var(--accent);
    flex-shrink: 0;
}

.lang-select {
    width: auto;
    margin-bottom: 0;
    padding: 0.25rem 0.5rem;
    font-size: 0.85rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 6px;
}

/* === Wasm Loading === */

.wasm-loading {
    text-align: center;
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 8px;
    background: var(--glass-bg);
    border-left: 3px solid var(--accent);
    color: var(--pico-muted-color);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.wasm-loading::before {
    content: '';
    width: 18px;
    height: 18px;
    border: 2px solid var(--glass-border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.wasm-loading[hidden] {
    display: none;
}

.wasm-loading.error {
    border-left-color: #ff4d6a;
    color: #ff4d6a;
    animation: none;
}

.wasm-loading.error::before {
    display: none;
}

.wasm-loading.ready {
    border-left-color: #00e68a;
    color: #00e68a;
    animation: none;
}

.wasm-loading.ready::before {
    display: none;
}

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

/* === Drop Zone === */

.drop-zone {
    border: 2px dashed var(--glass-border);
    border-radius: 12px;
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    background: var(--glass-bg);
    transition: border-color 0.3s, background-color 0.3s, box-shadow 0.3s;
}

.drop-zone:hover,
.drop-zone.drag-over {
    border-color: var(--accent);
    background: rgba(0, 212, 255, 0.04);
    box-shadow: 0 0 24px rgba(0, 212, 255, 0.1), inset 0 0 24px rgba(0, 212, 255, 0.03);
}

.drop-zone p {
    margin: 0;
    color: var(--pico-muted-color);
}

.drop-icon {
    width: 48px;
    height: 48px;
    color: var(--pico-muted-color);
    margin-bottom: 0.75rem;
    transition: color 0.3s, transform 0.3s;
}

.drop-zone:hover .drop-icon,
.drop-zone.drag-over .drop-icon {
    color: var(--accent);
    transform: translateY(-4px) scale(1.1);
}

/* === Video Preview === */

.video-wrapper {
    background: #000;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 0.75rem;
    border: 1px solid var(--glass-border);
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.4);
}

.video-wrapper video {
    display: block;
    width: 100%;
    max-height: 480px;
    object-fit: contain;
}

/* === Timeline Range Selector === */

.timeline-container {
    margin-bottom: 1rem;
    user-select: none;
}

.timeline-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    margin-bottom: 0.25rem;
    color: var(--accent);
    font-weight: 600;
}

.timeline-track {
    position: relative;
    height: 32px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 8px;
    cursor: pointer;
    border: 1px solid var(--glass-border);
}

.timeline-selected {
    position: absolute;
    top: 0;
    height: 100%;
    background: linear-gradient(90deg, rgba(0, 212, 255, 0.2), rgba(123, 97, 255, 0.2));
    border-radius: 8px;
    pointer-events: none;
}

.timeline-playhead {
    position: absolute;
    top: 0;
    width: 2px;
    height: 100%;
    background: #fff;
    pointer-events: none;
    z-index: 3;
    opacity: 0.8;
    box-shadow: 0 0 6px rgba(255, 255, 255, 0.5);
    transition: left 0.05s linear;
}

.timeline-handle {
    position: absolute;
    top: -2px;
    width: 14px;
    height: 36px;
    background: linear-gradient(180deg, var(--accent), var(--accent-alt));
    border-radius: 4px;
    cursor: ew-resize;
    z-index: 4;
    transform: translateX(-50%);
    transition: box-shadow 0.15s;
    box-shadow: 0 0 8px var(--glow);
}

.timeline-handle:hover,
.timeline-handle.dragging {
    box-shadow: 0 0 16px var(--glow), 0 0 4px var(--accent);
}

.timeline-handle::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 2px;
    height: 14px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 1px;
}

.timeline-times {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--pico-muted-color);
    margin-top: 0.2rem;
}

/* === File Info Bar === */

.file-info-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    font-size: 0.9rem;
    padding: 0.75rem 0;
    border-top: 1px solid var(--glass-border);
    margin-top: 0.5rem;
}

.file-info-bar strong {
    color: var(--accent);
}

/* === Selection Hint === */

.selection-hint {
    font-size: 0.9rem;
    color: var(--pico-muted-color);
    margin-bottom: 1rem;
}

/* === Operation Cards === */

article {
    padding: 1.5rem;
    background: var(--glass-bg) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border) !important;
    border-radius: 12px !important;
    transition: border-color 0.3s, box-shadow 0.3s;
}

article:hover {
    border-color: rgba(255, 255, 255, 0.15) !important;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

article h3 {
    margin-top: 0;
    background: linear-gradient(135deg, var(--accent), var(--accent-alt));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

/* === Trim Inputs === */

.trim-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

/* === GIF Options === */

.gif-options {
    margin: 0.75rem 0;
    padding: 1rem;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.gif-options-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem 0.75rem;
}

.gif-options-grid label {
    font-size: 0.85rem;
    margin-bottom: 0.15rem;
}

.gif-options-grid select,
.gif-options-grid input {
    margin-bottom: 0.25rem;
    padding: 0.35rem 0.5rem;
    font-size: 0.9rem;
}

/* === Buttons === */

button:not(.lang-btn),
[type="submit"] {
    background: linear-gradient(135deg, var(--accent), var(--accent-alt)) !important;
    border: none !important;
    color: #fff !important;
    font-weight: 600;
    border-radius: 8px !important;
    transition: box-shadow 0.3s, opacity 0.3s, transform 0.2s;
}

button:not(.lang-btn):hover:not(:disabled),
[type="submit"]:hover:not(:disabled) {
    box-shadow: 0 0 20px var(--glow), 0 0 40px var(--glow-alt);
    transform: translateY(-1px);
}

button:not(.lang-btn):active:not(:disabled) {
    transform: translateY(0);
}

button:disabled {
    opacity: 0.35 !important;
    cursor: not-allowed;
    box-shadow: none !important;
    transform: none !important;
}

/* === Tasks Table === */

#tasks-section table {
    width: 100%;
}

#tasks-section td progress {
    margin: 0;
    width: 100%;
}

#tasks-section progress::-webkit-progress-value {
    background: linear-gradient(90deg, var(--accent), var(--accent-alt));
    border-radius: 4px;
}

#tasks-section progress::-moz-progress-bar {
    background: linear-gradient(90deg, var(--accent), var(--accent-alt));
    border-radius: 4px;
}

#tasks-section tbody tr {
    transition: background-color 0.2s;
}

#tasks-section tbody tr:hover {
    background: rgba(255, 255, 255, 0.03);
}

#tasks-section a[role="button"] {
    background: transparent !important;
    border: 1px solid var(--accent) !important;
    color: var(--accent) !important;
    font-weight: 500;
}

#tasks-section a[role="button"]:hover {
    background: rgba(0, 212, 255, 0.1) !important;
    box-shadow: 0 0 12px var(--glow);
}

/* === Section Headers === */

section > h2 {
    font-weight: 700;
    letter-spacing: -0.3px;
}

/* === Upload Progress === */

#upload-progress progress::-webkit-progress-value {
    background: linear-gradient(90deg, var(--accent), var(--accent-alt));
    border-radius: 4px;
}

#upload-progress progress::-moz-progress-bar {
    background: linear-gradient(90deg, var(--accent), var(--accent-alt));
    border-radius: 4px;
}

/* === Footer === */

.site-footer {
    margin-top: 3rem;
    padding: 1.5rem 0;
    border-top: 1px solid var(--glass-border);
    text-align: center;
    font-size: 0.85rem;
    color: var(--pico-muted-color);
}

.site-footer p {
    margin: 0.4rem 0;
}

.github-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s, text-shadow 0.2s;
}

.github-link:hover {
    color: #fff;
    text-shadow: 0 0 10px var(--glow);
}