/* ============================================================
   SERANA Music Studio — Styles
   ============================================================ */

.studio-hero {
  padding: 8rem 2rem 3rem;
  text-align: center;
  background: linear-gradient(180deg, var(--navy) 0%, var(--navy2) 100%);
}
.studio-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.8rem, 5vw, 4.5rem);
  font-weight: 300;
  margin-bottom: 1rem;
}
.studio-hero h1 em { font-style: italic; color: var(--purple-light); }
.studio-sub { color: var(--muted); font-size: 1.05rem; max-width: 540px; margin: 0 auto; }

/* ── STUDIO CONTAINER ── */
.studio-main { padding: 0 2rem 4rem; background: var(--navy); }
.studio-container { max-width: 1200px; margin: 0 auto; }

/* ── TABS ── */
.studio-tabs {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid rgba(139,92,246,0.15);
  margin-bottom: 2.5rem;
  overflow-x: auto;
  padding-bottom: 0;
}
.tab-btn {
  background: transparent;
  border: none;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  padding: 1rem 1.5rem;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.3s;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.tab-btn:hover { color: var(--white); }
.tab-btn.active {
  color: var(--amber);
  border-bottom-color: var(--amber);
}
.tab-icon { font-size: 1.1rem; }

/* ── PANELS ── */
.tab-panel { display: none; }
.tab-panel.active { display: block; }

.tab-panel h2 {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 300;
  margin-bottom: 0.5rem;
}
.panel-desc { color: var(--muted); margin-bottom: 2rem; font-size: 0.95rem; }

/* ── FORM ELEMENTS ── */
.form-group { margin-bottom: 1.2rem; }
.form-group label {
  display: block;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

.form-group select,
.form-group input[type="text"],
.form-group textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  background: rgba(139,92,246,0.08);
  border: 1px solid rgba(139,92,246,0.2);
  border-radius: 10px;
  color: var(--white);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.3s;
  resize: vertical;
}
.form-group select:focus,
.form-group input:focus,
.form-group textarea:focus { border-color: var(--purple); }
.form-group select option { background: var(--navy2); }

/* ── BUTTONS ── */
.btn-studio {
  background: linear-gradient(135deg, var(--purple), var(--amber));
  color: var(--navy);
  padding: 0.8rem 1.8rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  border: none;
  cursor: pointer;
  transition: opacity 0.3s, transform 0.3s;
  display: inline-block;
  text-decoration: none;
  text-align: center;
}
.btn-studio:hover { opacity: 0.88; transform: translateY(-2px); }
.btn-studio:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

.btn-studio-ghost {
  background: transparent;
  color: var(--muted);
  padding: 0.8rem 1.8rem;
  border-radius: 50px;
  font-size: 0.9rem;
  border: 1px solid rgba(255,255,255,0.15);
  cursor: pointer;
  transition: all 0.3s;
  display: inline-block;
  text-decoration: none;
}
.btn-studio-ghost:hover { border-color: var(--purple-light); color: var(--white); }

.btn-studio-small {
  background: linear-gradient(135deg, var(--purple), var(--amber));
  color: var(--navy);
  padding: 0.5rem 1.2rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.8rem;
  border: none;
  cursor: pointer;
  margin-top: 0.75rem;
}

.icon-btn {
  background: rgba(139,92,246,0.1);
  border: 1px solid rgba(139,92,246,0.2);
  border-radius: 8px;
  padding: 0.4rem 0.6rem;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.3s;
}
.icon-btn:hover { border-color: var(--purple); background: rgba(139,92,246,0.2); }

/* ═══ WRITE TAB ═══ */
.write-layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 2rem;
}
.write-controls { position: sticky; top: 100px; }

.lyrics-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}
.lyrics-header h3 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 400;
}
.lyrics-actions { display: flex; gap: 0.5rem; }

#lyricsOutput {
  width: 100%;
  min-height: 500px;
  padding: 1.5rem;
  background: rgba(7,9,26,0.6);
  border: 1px solid rgba(139,92,246,0.15);
  border-radius: 14px;
  color: var(--white);
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: 1.15rem;
  line-height: 1.9;
  resize: vertical;
  outline: none;
  transition: border-color 0.3s;
}
#lyricsOutput:focus { border-color: var(--purple); }
#lyricsOutput::placeholder { color: rgba(138,143,168,0.4); }

.lyrics-meta {
  display: flex;
  gap: 1.5rem;
  margin-top: 0.75rem;
  font-size: 0.78rem;
  color: var(--muted);
}

/* ═══ GENERATE TAB ═══ */
.generate-layout { max-width: 700px; }
.suno-flow { display: flex; flex-direction: column; gap: 2rem; }

.flow-step {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}
.step-num {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--purple), var(--amber));
  color: var(--navy);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1rem;
}
.step-content h3 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  margin-bottom: 0.4rem;
}
.step-content p { color: var(--muted); font-size: 0.9rem; margin-bottom: 0.75rem; }

.copy-confirm {
  color: var(--teal);
  font-size: 0.85rem;
  margin-top: 0.5rem;
}

.upload-zone {
  position: relative;
  border: 2px dashed rgba(139,92,246,0.3);
  border-radius: 14px;
  padding: 2rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.3s, background 0.3s;
}
.upload-zone:hover {
  border-color: var(--purple);
  background: rgba(139,92,246,0.06);
}
.upload-zone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}
.upload-label { display: flex; flex-direction: column; gap: 0.5rem; align-items: center; }
.upload-icon { font-size: 2rem; }
.upload-label span { color: var(--muted); font-size: 0.9rem; }
.upload-formats { font-size: 0.75rem; color: rgba(138,143,168,0.5); }

.imported-track {
  background: rgba(139,92,246,0.08);
  border: 1px solid rgba(139,92,246,0.2);
  border-radius: 14px;
  padding: 1.5rem;
}
.track-info { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 1rem; }
.track-icon { font-size: 1.5rem; }
.track-name { font-weight: 500; }
.imported-track audio { width: 100%; margin-bottom: 0.5rem; }

/* ═══ RECORD TAB ═══ */
.record-layout { max-width: 800px; }
.record-studio { display: flex; flex-direction: column; gap: 2rem; }

.beat-player {
  background: rgba(139,92,246,0.06);
  border: 1px solid rgba(139,92,246,0.15);
  border-radius: 14px;
  padding: 1.5rem;
}
.beat-player h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
}
.beat-player audio { width: 100%; }

.record-controls {
  background: rgba(245,166,35,0.04);
  border: 1px solid rgba(245,166,35,0.15);
  border-radius: 14px;
  padding: 2rem;
  text-align: center;
}
.record-viz {
  margin-bottom: 1rem;
  display: flex;
  justify-content: center;
}
#recordViz {
  background: rgba(7,9,26,0.4);
  border-radius: 10px;
  max-width: 100%;
}

.record-timer {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 300;
  color: var(--amber);
  margin-bottom: 1.5rem;
}

.record-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.rec-btn {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 1rem 2rem;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  font-family: var(--font-sans);
  font-weight: 600;
  transition: all 0.3s;
  background: linear-gradient(135deg, #e74c3c, #c0392b);
  color: white;
}
.rec-btn:hover { transform: translateY(-2px); opacity: 0.9; }
.rec-btn:disabled { opacity: 0.3; cursor: not-allowed; transform: none; }
.rec-btn.secondary {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  color: var(--white);
}
.rec-btn.recording {
  animation: recPulse 1s ease-in-out infinite;
}

.rec-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: white;
}
.rec-btn.recording .rec-dot { background: #e74c3c; animation: recDotPulse 1s ease-in-out infinite; }
.stop-icon { font-size: 0.8rem; }

@keyframes recPulse { 0%,100% { box-shadow: 0 0 0 0 rgba(231,76,60,0.4); } 50% { box-shadow: 0 0 0 15px rgba(231,76,60,0); } }
@keyframes recDotPulse { 0%,100% { opacity: 1; } 50% { opacity: 0.3; } }

.record-options {
  display: flex;
  gap: 2rem;
  justify-content: center;
}
.check-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--muted);
  cursor: pointer;
}
.check-label input[type="checkbox"] { accent-color: var(--purple); }

.takes-list h3 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  margin-bottom: 1rem;
}
.takes-empty { color: var(--muted); font-size: 0.9rem; font-style: italic; }

.take-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: rgba(139,92,246,0.06);
  border: 1px solid rgba(139,92,246,0.12);
  border-radius: 10px;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}
.take-item audio { flex: 1; min-width: 200px; }
.take-name { font-size: 0.85rem; font-weight: 500; min-width: 80px; }
.take-actions { display: flex; gap: 0.5rem; }

/* ═══ MIX TAB ═══ */
.mix-layout { max-width: 800px; }
.mix-board { display: flex; flex-direction: column; gap: 1.5rem; }

.mix-track {
  background: rgba(139,92,246,0.06);
  border: 1px solid rgba(139,92,246,0.15);
  border-radius: 14px;
  padding: 1.5rem;
}
.mix-track-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.mix-track-icon { font-size: 1.5rem; }
.mix-track-name { font-weight: 500; font-size: 1rem; }
.mix-track-status { color: var(--muted); font-size: 0.8rem; margin-left: auto; }

.mix-track-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.mix-track-controls label { font-size: 0.8rem; color: var(--muted); }
.mix-track-controls input[type="range"] {
  flex: 1;
  accent-color: var(--purple);
  max-width: 300px;
}

.mix-playback {
  display: flex;
  gap: 1rem;
  justify-content: center;
  padding: 1.5rem 0;
}

.mix-export {
  background: rgba(245,166,35,0.06);
  border: 1px solid rgba(245,166,35,0.15);
  border-radius: 14px;
  padding: 2rem;
  text-align: center;
}
.mix-export h3 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  margin-bottom: 1.5rem;
}
.export-options { max-width: 300px; margin: 0 auto 1.5rem; }
.export-btn { font-size: 1rem; padding: 1rem 2.5rem; }
.export-note { color: var(--muted); font-size: 0.8rem; margin-top: 1rem; }

/* ═══ LIBRARY TAB ═══ */
.library-layout { max-width: 800px; }
.library-grid { display: flex; flex-direction: column; gap: 1rem; }
.library-empty { color: var(--muted); font-style: italic; font-size: 0.9rem; padding: 3rem; text-align: center; }

.library-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.2rem;
  background: rgba(139,92,246,0.06);
  border: 1px solid rgba(139,92,246,0.12);
  border-radius: 12px;
  transition: border-color 0.3s;
}
.library-item:hover { border-color: rgba(139,92,246,0.3); }
.library-item audio { flex: 1; min-width: 200px; }

/* ── SERANA VOICE LOADING ── */
.serana-speaking {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: rgba(139,92,246,0.15);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(139,92,246,0.3);
  border-radius: 14px;
  padding: 1rem 1.5rem;
  color: var(--white);
  font-size: 0.9rem;
  z-index: 100;
  display: none;
  animation: fadeIn 0.3s ease;
}
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* ── COUNTDOWN OVERLAY ── */
.countdown-overlay {
  position: fixed;
  inset: 0;
  background: rgba(7,9,26,0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
}
.countdown-num {
  font-family: var(--font-serif);
  font-size: 8rem;
  font-weight: 300;
  color: var(--amber);
  animation: countPulse 1s ease;
}
@keyframes countPulse { 0% { transform: scale(1.3); opacity: 0; } 50% { opacity: 1; } 100% { transform: scale(1); opacity: 1; } }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .write-layout { grid-template-columns: 1fr; }
  .studio-tabs { gap: 0; }
  .tab-btn { padding: 0.8rem 1rem; font-size: 0.8rem; }
  .record-options { flex-direction: column; align-items: center; }
  .mix-track-controls { flex-wrap: wrap; }
}