/* === CSS Variables & Theme === */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-card: #ffffff;
    --text-primary: #1a1a2e;
    --text-secondary: #6c757d;
    --border-color: #e9ecef;
    --accent: #6366f1;
    --accent-hover: #4f46e5;
    --accent-light: #eef2ff;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
    --transition: all 0.2s ease;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #0f172a;
        --bg-secondary: #1e293b;
        --bg-card: #1e293b;
        --text-primary: #f1f5f9;
        --text-secondary: #94a3b8;
        --border-color: #334155;
        --accent-light: #1e1b4b;
        --shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
        --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
    }
}

/* === Reset & Base === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* === Layout === */
.container {
    max-width: 720px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

header {
    text-align: center;
    margin-bottom: 2.5rem;
}

header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* === Input Section === */
.input-section {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
}

.prompt-group {
    margin-bottom: 1rem;
}

.prompt-group label {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.95rem;
    resize: vertical;
    transition: var(--transition);
    font-family: inherit;
}

textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

/* === Advanced Params === */
.advanced-params {
    margin-bottom: 1.25rem;
}

.advanced-params summary {
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--text-secondary);
    padding: 0.5rem 0;
    user-select: none;
}

.advanced-params summary:hover {
    color: var(--accent);
}

.params-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 1rem;
    padding-top: 0.75rem;
}

.param-group label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 0.3rem;
}

select,
input[type="number"] {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.85rem;
    transition: var(--transition);
}

select:focus,
input[type="number"]:focus {
    outline: none;
    border-color: var(--accent);
}

/* === Toggle Switch === */
.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--border-color);
    border-radius: 24px;
    transition: var(--transition);
}

.slider::before {
    content: "";
    position: absolute;
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    border-radius: 50%;
    transition: var(--transition);
}

input:checked + .slider {
    background-color: var(--accent);
}

input:checked + .slider::before {
    transform: translateX(20px);
}

/* === Buttons === */
.btn-primary {
    width: 100%;
    padding: 0.85rem 1.5rem;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-primary .btn-loading {
    display: none;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-primary.loading .btn-text {
    display: none;
}

.btn-primary.loading .btn-loading {
    display: flex;
}

.spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.btn-secondary {
    display: inline-block;
    padding: 0.6rem 1.2rem;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
}

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

.btn-text-only {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 0.8rem;
    cursor: pointer;
    transition: var(--transition);
}

.btn-text-only:hover {
    color: var(--error);
}

/* === Status Section === */
.status-section {
    margin-bottom: 1.5rem;
}

.status-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1.25rem;
    box-shadow: var(--shadow);
}

.status-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.status-icon {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--warning);
    animation: pulse 2s infinite;
}

.status-icon.running {
    background: var(--accent);
}

.status-icon.succeeded {
    background: var(--success);
    animation: none;
}

.status-icon.failed {
    background: var(--error);
    animation: none;
}

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

.status-text {
    font-weight: 600;
    font-size: 0.95rem;
}

.status-details {
    margin-bottom: 0.75rem;
}

.status-details p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 0.2rem;
}

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

.progress-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 4px;
    transition: width 0.5s ease;
    width: 0%;
}

/* === Video Section === */
.video-section {
    margin-bottom: 1.5rem;
}

.video-container {
    border-radius: var(--radius);
    overflow: hidden;
    background: #000;
    box-shadow: var(--shadow-lg);
}

video {
    width: 100%;
    display: block;
}

.video-actions {
    margin-top: 0.75rem;
    text-align: center;
}

/* === History Section === */
.history-section {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1.25rem;
    box-shadow: var(--shadow);
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.history-header h2 {
    font-size: 1rem;
    font-weight: 600;
}

.history-list {
    max-height: 300px;
    overflow-y: auto;
}

.empty-tip {
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-align: center;
    padding: 1rem;
}

.history-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem;
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
    background: var(--bg-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.history-item:hover {
    background: var(--accent-light);
}

.history-item-left {
    flex: 1;
    min-width: 0;
}

.history-item-prompt {
    font-size: 0.85rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.history-item-time {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.history-item-status {
    font-size: 0.75rem;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-weight: 500;
    flex-shrink: 0;
    margin-left: 0.5rem;
}

.history-item-status.succeeded {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.history-item-status.failed {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
}

.history-item-status.running,
.history-item-status.pending {
    background: rgba(99, 102, 241, 0.1);
    color: var(--accent);
}

/* === Utility === */
.hidden {
    display: none !important;
}

/* === Responsive === */
@media (max-width: 600px) {
    .container {
        padding: 1rem;
    }

    header h1 {
        font-size: 1.4rem;
    }

    .params-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* === Notify Hint === */
.notify-hint {
    margin-top: 1.5rem;
    text-align: center;
}

.notify-hint .hint-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
}