/* YT.OpenVibe — Free YouTube Downloader */

:root {
    --bg:        var(--bg-primary, #0e0e12);
    --bg-card:   #16161d;
    --bg-input:  #1e1e28;
    --border:    #2a2a38;
    --text:      var(--text-primary, #e4e4ef);
    --text-dim:  var(--text-secondary, #8888a0);
    --accent:    #ff4444;
    --accent-hover: var(--accent-light, #ff6666);
    --accent-glow: rgba(255, 68, 68, 0.25);
    --green:     #44cc66;
    --green-glow: rgba(68, 204, 102, 0.25);
    --radius:    12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --shadow:    0 4px 24px rgba(0, 0, 0, 0.35);
    --font:      'Outfit', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --max-w:     720px;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; }
body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
}

#app {
    flex: 1;
    width: 100%;
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 24px 20px 48px;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Hero */
.hero {
    text-align: center;
    padding: 40px 0 24px;
}
.hero-icon {
    font-size: 3rem;
    color: var(--accent);
    margin-bottom: 12px;
    filter: drop-shadow(0 0 16px var(--accent-glow));
}
.hero h1 {
    font-size: 2.4rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--accent), #ff8866);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-subtitle {
    color: var(--text-dim);
    font-size: 1.05rem;
    margin-top: 4px;
}

/* URL Input */
.url-section {
    padding: 0 0 8px;
}
.url-input-wrap {
    display: flex;
    align-items: center;
    background: var(--bg-input);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    padding: 4px 6px 4px 16px;
    transition: border-color .2s, box-shadow .2s;
    gap: 8px;
}
.url-input-wrap:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}
.url-icon {
    color: var(--text-dim);
    font-size: 1.05rem;
    flex-shrink: 0;
}
.url-input {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 0.95rem;
    padding: 12px 4px;
    min-width: 0;
}
.url-input::placeholder { color: var(--text-dim); opacity: 0.6; }
.url-hint {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-dim);
    margin-top: 8px;
}

/* Buttons */
.btn {
    font-family: var(--font);
    font-weight: 600;
    border: none;
    cursor: pointer;
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 0.95rem;
    transition: background .2s, transform .15s, box-shadow .2s;
    white-space: nowrap;
    text-decoration: none;
}
.btn:active { transform: scale(0.97); }
.btn-primary {
    background: var(--accent);
    color: #fff;
}
.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 0 0 3px var(--accent-glow);
    text-decoration: none;
}
.btn-secondary {
    background: var(--bg-input);
    color: var(--text);
    border: 1px solid var(--border);
}
.btn-secondary:hover {
    border-color: var(--text-dim);
    text-decoration: none;
}
.btn-lg {
    padding: 14px 32px;
    font-size: 1.05rem;
    border-radius: var(--radius);
}
.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* Loading Spinner */
.loading {
    text-align: center;
    padding: 40px 0;
    color: var(--text-dim);
}
.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 16px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Video Card */
.video-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}
.video-thumb {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #000;
    overflow: hidden;
}
.video-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.video-thumb .duration-badge {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0,0,0,0.85);
    color: #fff;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    padding: 2px 8px;
    border-radius: 4px;
}
.video-info {
    padding: 16px 20px;
}
.video-info h2 {
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.35;
    margin-bottom: 6px;
}
.video-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.85rem;
    color: var(--text-dim);
}
.video-meta span i { margin-right: 4px; }

/* Format Selection */
.format-section {
    margin-bottom: 24px;
}
.format-section h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 16px;
    text-align: center;
}
.format-groups {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 24px;
}
.format-group h4 {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-dim);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.format-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.format-btn {
    font-family: var(--font);
    font-size: 0.85rem;
    font-weight: 500;
    padding: 8px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-input);
    color: var(--text);
    cursor: pointer;
    transition: border-color .2s, background .2s, box-shadow .2s;
}
.format-btn:hover {
    border-color: var(--text-dim);
}
.format-btn.active {
    border-color: var(--accent);
    background: rgba(255, 68, 68, 0.1);
    color: #fff;
    box-shadow: 0 0 0 2px var(--accent-glow);
}
.format-btn .format-sub {
    display: block;
    font-size: 0.72rem;
    color: var(--text-dim);
    font-weight: 400;
    margin-top: 2px;
}
.format-btn.active .format-sub {
    color: var(--accent);
}

#download-btn {
    display: flex;
    margin: 0 auto;
}

/* Progress */
.progress-section {
    text-align: center;
    padding: 20px 0;
}
.progress-section h3 {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 16px;
}
.progress-bar-wrap {
    height: 12px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 12px;
}
.progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent), #ff8866);
    border-radius: 6px;
    transition: width 0.3s;
}
.progress-bar.indeterminate {
    width: 100%;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    background-size: 200% 100%;
    animation: indeterminate 1.5s linear infinite;
}
@keyframes indeterminate {
    0%   { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}
.progress-stats {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--text-dim);
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* Done */
.done-section {
    text-align: center;
    padding: 32px 0;
}
.done-icon {
    font-size: 3rem;
    color: var(--green);
    margin-bottom: 12px;
    filter: drop-shadow(0 0 16px var(--green-glow));
}
.done-section h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 4px;
}
.done-section p {
    color: var(--text-dim);
    font-size: 0.9rem;
    margin-bottom: 20px;
}
.done-actions {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

/* Error */
.error-section {
    text-align: center;
    padding: 32px 0;
}
.error-icon {
    font-size: 2.5rem;
    color: var(--accent);
    margin-bottom: 12px;
}
.error-section p {
    color: var(--text-dim);
    margin-bottom: 20px;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
}

/* Footer */
.site-footer {
    border-top: 1px solid var(--border);
    padding: 20px;
    font-size: 0.82rem;
    color: var(--text-dim);
}
.footer-inner {
    max-width: var(--max-w);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}
.footer-links {
    display: flex;
    gap: 16px;
}

/* Responsive */
@media (max-width: 600px) {
    .hero h1 { font-size: 1.8rem; }
    .url-input-wrap { flex-wrap: wrap; padding: 8px; }
    .url-input { font-size: 0.85rem; }
    .btn .btn-label { display: none; }
    .format-btn { padding: 6px 12px; font-size: 0.8rem; }
    .footer-inner { flex-direction: column; text-align: center; }
}