/* V.A.M.P. — Vibe Amplified Music Prompter */

:root {
    --vamp-bg: #0a0a12;
    --vamp-surface: #0f0f1e;
    --vamp-surface-2: #161628;
    --vamp-cyan: #00e5ff;
    --vamp-purple: #b388ff;
    --vamp-violet: #7c4dff;
    --vamp-magenta: #e040fb;
    --vamp-gold: #ffd740;
    --vamp-green: #69f0ae;
    --vamp-red: #ff5f5f;
    --vamp-text: #e0e0e8;
    --vamp-text-dim: #8a8aa0;
    --vamp-border: rgba(0, 229, 255, 0.1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Rajdhani', sans-serif;
    background: var(--vamp-bg);
    color: var(--vamp-text);
    min-height: 100vh;
    overflow-x: hidden;
}

/* ── Wave Background ── */
.wave-bg {
    position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden;
}
.wave-bg canvas { width: 100%; height: 100%; }

/* ── Header ── */
.vamp-header {
    position: relative; z-index: 10;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 2rem; height: 64px;
    background: rgba(10, 10, 18, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--vamp-border);
}
.vamp-brand {
    font-family: 'Orbitron', sans-serif; font-weight: 900; font-size: 1.2rem;
    letter-spacing: 0.15em;
    background: linear-gradient(135deg, var(--vamp-gold), var(--vamp-magenta));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text; text-decoration: none;
}
.vamp-brand-sub {
    font-weight: 400; font-size: 0.7rem; letter-spacing: 0.1em;
    color: var(--vamp-text-dim); margin-left: 0.75rem;
}
.vamp-nav a {
    color: var(--vamp-text-dim); text-decoration: none; font-size: 0.9rem;
    font-weight: 600; transition: color 0.2s;
}
.vamp-nav a:hover { color: var(--vamp-cyan); }
.info-btn {
    background: none;
    border: 1px solid rgba(0,229,255,0.2);
    color: var(--vamp-cyan);
    padding: 0.35rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    transition: all 0.2s;
}
.info-btn:hover {
    background: rgba(0,229,255,0.08);
    border-color: var(--vamp-cyan);
    box-shadow: 0 0 12px rgba(0,229,255,0.15);
}

/* ── Main ── */
.vamp-main {
    position: relative; z-index: 1;
    max-width: 1200px; margin: 0 auto;
    padding: 2rem 2rem 4rem;
}

/* ── Hero ── */
.vamp-hero { text-align: center; padding: 3rem 0 2rem; }
.vamp-hero h1 {
    font-family: 'Orbitron', sans-serif; font-weight: 900;
    font-size: clamp(2rem, 5vw, 3.2rem); letter-spacing: 0.1em;
    background: linear-gradient(135deg, var(--vamp-gold), var(--vamp-magenta), var(--vamp-cyan));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 20px rgba(255, 215, 64, 0.2));
    margin-bottom: 0.75rem;
}
.vamp-hero .subtitle {
    font-size: 1.2rem; color: var(--vamp-text-dim);
    max-width: 600px; margin: 0 auto; line-height: 1.6;
}

/* ── ACE Status ── */
.ace-status {
    display: inline-flex; align-items: center; gap: 0.5rem;
    margin-top: 1rem; padding: 0.4rem 1rem;
    border-radius: 20px; font-size: 0.8rem; font-weight: 600; border: 1px solid;
}
.ace-status.connected { color: var(--vamp-green); border-color: rgba(105,240,174,0.3); background: rgba(105,240,174,0.06); }
.ace-status.disconnected { color: var(--vamp-red); border-color: rgba(255,95,95,0.3); background: rgba(255,95,95,0.06); }
.ace-status.checking { color: var(--vamp-gold); border-color: rgba(255,215,64,0.3); background: rgba(255,215,64,0.06); }
.ace-status .dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
.ace-status.checking .dot { animation: pulse-dot 1.5s ease-in-out infinite; }
@keyframes pulse-dot { 0%,100%{opacity:1} 50%{opacity:0.3} }

/* ── Mode Tabs ── */
.mode-tabs {
    display: flex; margin: 2rem auto; max-width: 400px;
    border-radius: 8px; overflow: hidden; border: 1px solid var(--vamp-border);
}
.mode-tab {
    flex: 1; padding: 0.75rem 1rem; text-align: center;
    font-family: 'Orbitron', sans-serif; font-size: 0.8rem; font-weight: 700;
    letter-spacing: 0.08em; background: var(--vamp-surface);
    color: var(--vamp-text-dim); border: none; cursor: pointer; transition: all 0.3s;
}
.mode-tab.active {
    background: linear-gradient(135deg, var(--vamp-violet), var(--vamp-purple));
    color: #fff; box-shadow: 0 0 20px rgba(124,77,255,0.3);
}
.mode-tab:not(.active):hover { background: var(--vamp-surface-2); color: var(--vamp-text); }

/* ── Input Panel ── */
.input-panel {
    background: var(--vamp-surface); border: 1px solid var(--vamp-border);
    border-radius: 12px; padding: 2rem; margin-bottom: 2rem;
    box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}
.input-section { display: none; }
.input-section.active { display: block; }

.input-panel label {
    display: block; font-family: 'Orbitron', sans-serif; font-size: 0.75rem;
    font-weight: 700; letter-spacing: 0.1em; color: var(--vamp-purple);
    margin-bottom: 0.5rem; text-transform: uppercase;
}
.input-panel label .hint {
    font-family: 'Rajdhani', sans-serif; font-weight: 400; font-size: 0.85rem;
    letter-spacing: 0; color: var(--vamp-text-dim); text-transform: none;
}
.input-panel textarea,
.input-panel input[type="text"],
.input-panel input[type="number"],
.input-panel select {
    width: 100%; padding: 0.75rem 1rem;
    background: var(--vamp-bg);
    border: 1px solid rgba(0,229,255,0.12); border-radius: 6px;
    color: var(--vamp-text); font-family: 'Rajdhani', sans-serif; font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s; margin-bottom: 1.25rem;
}
.input-panel textarea:focus,
.input-panel input:focus,
.input-panel select:focus {
    outline: none; border-color: var(--vamp-cyan);
    box-shadow: 0 0 0 2px rgba(0,229,255,0.1);
}
.input-panel textarea { resize: vertical; min-height: 80px; line-height: 1.6; }
.input-panel select {
    appearance: none; cursor: pointer;
    background-image: url('data:image/svg+xml;utf8,<svg width="10" height="6" viewBox="0 0 10 6" fill="none"><path d="M1 1l3 3l3-3" stroke="%2300e5ff" stroke-width="1.5" stroke-linecap="round"/></svg>');
    background-repeat: no-repeat; background-position: right 0.75rem center;
}

/* ── Params Grid ── */
.params-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1rem;
}
.params-grid label { margin-bottom: 0.35rem; }

/* ── Presets ── */
.presets-label {
    font-family: 'Orbitron', sans-serif; font-size: 0.7rem; font-weight: 700;
    letter-spacing: 0.1em; color: var(--vamp-text-dim); margin-bottom: 0.5rem;
    text-transform: uppercase;
}
.presets-grid { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1.5rem; }
.preset-chip {
    padding: 0.35rem 0.85rem;
    background: rgba(124,77,255,0.1); border: 1px solid rgba(124,77,255,0.2);
    border-radius: 20px; color: var(--vamp-purple);
    font-size: 0.85rem; font-weight: 600; cursor: pointer;
    transition: all 0.2s; white-space: nowrap;
}
.preset-chip:hover {
    background: rgba(124,77,255,0.2); border-color: var(--vamp-purple);
    box-shadow: 0 0 12px rgba(124,77,255,0.2);
}

/* ── Action Buttons ── */
.action-row {
    display: flex; flex-direction: column; gap: 0.75rem;
}
.generate-btn,
.stop-btn {
    width: 100%; padding: 1rem;
    font-family: 'Orbitron', sans-serif; font-weight: 900; font-size: 1.1rem;
    letter-spacing: 0.15em; text-transform: uppercase; color: #fff;
    border: none; border-radius: 8px; cursor: pointer;
    transition: transform 0.2s, box-shadow 0.3s;
}
.generate-btn {
    background: linear-gradient(135deg, var(--vamp-violet), var(--vamp-magenta));
    box-shadow: 0 4px 20px rgba(124,77,255,0.3);
}
.generate-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(124,77,255,0.4);
}
.stop-btn {
    background: linear-gradient(135deg, #d32f2f, #ff5f5f);
    box-shadow: 0 4px 20px rgba(255,95,95,0.3);
    animation: stop-pulse 1.5s ease-in-out infinite;
}
.stop-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(255,95,95,0.4);
}
.stop-btn:active {
    transform: translateY(0);
}
@keyframes stop-pulse {
    0%, 100% { box-shadow: 0 4px 20px rgba(255,95,95,0.3); }
    50% { box-shadow: 0 4px 30px rgba(255,95,95,0.6); }
}

/* ── Advanced Toggle ── */
.advanced-toggle {
    display: flex; align-items: center; gap: 0.5rem; margin-top: 1.5rem;
    cursor: pointer; color: var(--vamp-text-dim); font-size: 0.85rem;
    font-weight: 600; user-select: none; border: none; background: none; padding: 0;
    font-family: 'Rajdhani', sans-serif;
}
.advanced-toggle .arrow { transition: transform 0.3s; }
.advanced-toggle.open .arrow { transform: rotate(90deg); }
.advanced-section { display: none; margin-top: 1.5rem; padding-top: 1.5rem; border-top: 1px solid var(--vamp-border); }
.advanced-section.visible { display: block; }

/* ── Results Panel ── */
.results-panel {
    background: var(--vamp-surface); border: 1px solid var(--vamp-border);
    border-radius: 12px; overflow: hidden;
}
.results-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 1.25rem 1.5rem; border-bottom: 1px solid var(--vamp-border);
}
.results-header h3 {
    font-family: 'Orbitron', sans-serif; font-size: 0.85rem; font-weight: 700;
    letter-spacing: 0.1em; color: var(--vamp-cyan);
}

/* ── Generation Progress ── */
.gen-progress {
    padding: 3rem 2rem; text-align: center;
}
.gen-progress .spinner {
    width: 48px; height: 48px; margin: 0 auto 1.5rem;
    border: 3px solid var(--vamp-border);
    border-top-color: var(--vamp-cyan);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.gen-progress p { color: var(--vamp-text-dim); font-size: 1rem; margin-top: 0.5rem; }

/* ── Audio Track Card ── */
.audio-track {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--vamp-border);
}
.audio-track:last-child { border-bottom: none; }
.track-header {
    display: flex; align-items: center; gap: 1rem; margin-bottom: 0.75rem;
}
.track-seed {
    font-family: 'IBM Plex Mono', monospace; font-size: 0.75rem;
    color: var(--vamp-text-dim); background: var(--vamp-surface-2);
    padding: 0.2rem 0.5rem; border-radius: 4px;
}
.track-metas {
    display: flex; gap: 0.75rem; font-size: 0.8rem; color: var(--vamp-text-dim);
}
.track-metas span { white-space: nowrap; }

/* ── Audio Player ── */
.audio-player-wrap {
    display: flex; align-items: center; gap: 1rem;
}
.audio-player-wrap audio {
    flex: 1; height: 40px; border-radius: 6px;
}
.track-actions {
    display: flex; gap: 0.5rem; flex-shrink: 0;
}
.track-btn {
    display: inline-flex; align-items: center; gap: 0.35rem;
    padding: 0.4rem 0.85rem;
    background: rgba(0,229,255,0.08);
    border: 1px solid rgba(0,229,255,0.2); border-radius: 6px;
    color: var(--vamp-cyan); font-size: 0.8rem; font-weight: 600;
    cursor: pointer; text-decoration: none;
    transition: all 0.2s;
    font-family: 'Rajdhani', sans-serif;
}
.track-btn:hover {
    background: rgba(0,229,255,0.15);
    border-color: var(--vamp-cyan);
    box-shadow: 0 0 12px rgba(0,229,255,0.15);
}
.download-group {
    display: flex; gap: 0.5rem;
}
.track-btn-wav {
    border-color: rgba(124,77,255,0.3);
    color: var(--vamp-purple);
    background: rgba(124,77,255,0.08);
}
.track-btn-wav:hover {
    background: rgba(124,77,255,0.15);
    border-color: var(--vamp-purple);
    box-shadow: 0 0 12px rgba(124,77,255,0.15);
}
.track-btn-mp3 {
    border-color: rgba(255,215,64,0.3);
    color: var(--vamp-gold);
    background: rgba(255,215,64,0.08);
}
.track-btn-mp3:hover {
    background: rgba(255,215,64,0.15);
    border-color: var(--vamp-gold);
    box-shadow: 0 0 12px rgba(255,215,64,0.15);
}

/* ── Empty State ── */
.empty-state {
    padding: 3rem 2rem; text-align: center;
    color: var(--vamp-text-dim); font-size: 1rem;
}

/* ── Footer ── */
.vamp-footer {
    position: relative; z-index: 1;
    text-align: center; padding: 2rem;
    border-top: 1px solid var(--vamp-border);
    font-size: 0.85rem; color: var(--vamp-text-dim);
}
.vamp-footer a { color: var(--vamp-cyan); text-decoration: none; }
.vamp-footer a:hover { text-decoration: underline; }

/* ── Modal ── */
.vamp-modal {
    display: none; position: fixed; inset: 0; z-index: 1000;
    align-items: center; justify-content: center;
}
.vamp-modal.visible { display: flex; }
.vamp-modal-overlay {
    position: absolute; inset: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(4px);
}
.vamp-modal-content {
    position: relative; z-index: 1;
    background: var(--vamp-surface);
    border: 1px solid var(--vamp-border);
    border-radius: 12px;
    padding: 2rem 2.5rem;
    max-width: 620px; width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 16px 64px rgba(0, 0, 0, 0.5);
}
.vamp-modal-close {
    position: absolute; top: 1rem; right: 1rem;
    background: none; border: none;
    color: var(--vamp-text-dim); font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
    transition: color 0.2s;
}
.vamp-modal-close:hover { color: var(--vamp-cyan); }
.vamp-modal-content h2 {
    font-family: 'Orbitron', sans-serif; font-weight: 900;
    font-size: 1.4rem; letter-spacing: 0.1em;
    background: linear-gradient(135deg, var(--vamp-gold), var(--vamp-magenta));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.25rem;
}
.vamp-modal-content h3 {
    font-family: 'Orbitron', sans-serif; font-weight: 700;
    font-size: 0.8rem; letter-spacing: 0.08em;
    color: var(--vamp-cyan);
    margin: 1.25rem 0 0.5rem;
    text-transform: uppercase;
}
.vamp-modal-content p,
.vamp-modal-content li {
    color: var(--vamp-text-dim);
    line-height: 1.6;
    font-size: 0.95rem;
}
.vamp-modal-content ul {
    padding-left: 1.25rem;
    margin: 0.5rem 0;
}
.vamp-modal-content li {
    margin-bottom: 0.35rem;
}
.vamp-modal-content code {
    background: var(--vamp-surface-2);
    padding: 0.1rem 0.4rem;
    border-radius: 3px;
    font-size: 0.85rem;
    color: var(--vamp-purple);
}
.vamp-modal-content a {
    color: var(--vamp-cyan);
    text-decoration: none;
}
.vamp-modal-content a:hover {
    text-decoration: underline;
}
.vamp-modal-content strong {
    color: var(--vamp-text);
}

/* ── Scanlines ── */
body::after {
    content: ''; position: fixed; inset: 0; z-index: 999; pointer-events: none;
    background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0,0,0,0.03) 2px, rgba(0,0,0,0.03) 4px);
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .vamp-main { padding: 1rem; }
    .vamp-hero { padding: 2rem 0 1.5rem; }
    .input-panel { padding: 1.5rem; }
    .params-grid { grid-template-columns: 1fr 1fr; }
    .mode-tabs { max-width: 100%; }
    .vamp-header { padding: 0 1rem; }
}
@media (max-width: 480px) {
    .params-grid { grid-template-columns: 1fr; }
    .track-header { flex-wrap: wrap; }
}