/* ===========================================================================
 * studio-session.css — unified Studio tabbed shell.
 * Auto-loaded by lib/landing-context.js buildThemeCSS() — no manual wiring.
 * Stays narrow-scoped: just the .session-shell + tabs + panels.
 * All chat bubbles reuse the existing .pb-msg styles defined for the
 * coach-room + chat widget, so the read experience stays identical.
 * =========================================================================== */

.studio-session-body {
  background: var(--bg, #0a0a10);
  color: var(--fg, #f0f0f0);
  margin: 0;
  font-family: 'Space Grotesk', system-ui, sans-serif;
  min-height: 100vh;
}

.session-shell {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding-bottom: 64px; /* bottom-nav clearance */
}

/* ── header ────────────────────────────────────────────────────── */
.session-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px 6px;
  gap: 12px;
}
.session-header-left { display: flex; align-items: center; gap: 10px; min-width: 0; }
.session-back {
  display: flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: 10px;
  background: var(--card-bg, #13131c); color: var(--fg, #f0f0f0);
  text-decoration: none; font-size: 1.1rem; border: 1px solid var(--card-border, #1e1e2e);
}
.session-title-block { min-width: 0; }
.session-title-label {
  font-size: 0.66rem; color: var(--fg-muted, #8888a0);
  letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 2px;
}
.session-title {
  font-family: 'Syne', sans-serif; font-weight: 700; font-size: 1.05rem;
  color: var(--fg, #f0f0f0); white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.session-crew-strip {
  display: flex; align-items: center; gap: 6px; flex-wrap: wrap;
}
.session-crew-chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 10px; border-radius: 999px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--card-border, #1e1e2e);
  color: var(--fg-muted, #8888a0); font-size: 0.74rem; font-weight: 600;
  white-space: nowrap;
}
.session-crew-chip .chip-dot {
  width: 10px; height: 10px; border-radius: 50%; display: inline-block;
}
.session-crew-chip.is-active { color: var(--fg, #f0f0f0); border-color: rgba(255,255,255,0.18); }

/* ── tabs (sticky top) ─────────────────────────────────────────── */
.studio-tabs {
  position: sticky; top: 0; z-index: 30;
  display: flex; gap: 4px;
  background: var(--bg, #0a0a10);
  padding: 8px 12px;
  border-top: 1px solid var(--card-border, #1e1e2e);
  border-bottom: 1px solid var(--card-border, #1e1e2e);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.studio-tab {
  flex: 1; appearance: none; border: none;
  background: transparent; color: var(--fg-muted, #8888a0);
  font-family: 'Syne', sans-serif; font-size: 0.85rem; font-weight: 700;
  padding: 8px 10px; border-radius: 8px; cursor: pointer;
  position: relative; transition: color 0.2s, background 0.2s;
  white-space: nowrap;
}
.studio-tab:hover { color: var(--fg, #f0f0f0); }
.studio-tab.is-active {
  color: var(--fg, #f0f0f0);
  background: rgba(255,255,255,0.06);
}
.studio-tab.is-active::after {
  content: ''; position: absolute; left: 14px; right: 14px; bottom: 2px;
  height: 2px; background: var(--accent, #4ecaff); border-radius: 2px;
}
.studio-tab.has-hint::before {
  content: ''; position: absolute; top: 6px; right: 8px;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent, #4ecaff);
  box-shadow: 0 0 6px var(--accent, #4ecaff);
}

/* ── panels ───────────────────────────────────────────────────── */
.studio-tabpanels { flex: 1; padding: 12px 16px 16px; }
.studio-tabpanel { display: none; }
.studio-tabpanel.is-active { display: flex; flex-direction: column; }

/* ── Chat panel ───────────────────────────────────────────────── */
#tab-chat.is-active {
  flex: 1;
  min-height: calc(100vh - 220px);
}
.session-thread {
  flex: 1; display: flex; flex-direction: column; gap: 10px;
  padding: 4px 4px 12px;
}
.session-empty { padding: 28px 12px; text-align: center; }
.session-empty-title {
  font-family: 'Syne', sans-serif; font-weight: 700; font-size: 1.1rem;
  color: var(--fg, #f0f0f0); margin-bottom: 6px;
}
.session-empty-sub { color: var(--fg-muted, #8888a0); font-size: 0.92rem; }

/* Specialist join bubble — purple gradient strip with crew avatar dot. */
.specialist-join-bubble {
  align-self: center;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 16px; border-radius: 999px;
  background: linear-gradient(135deg, rgba(167,139,250,0.18), rgba(196,181,253,0.10));
  border: 1px solid rgba(167,139,250,0.35);
  color: var(--fg, #f0f0f0); font-family: 'Syne', sans-serif;
  font-size: 0.82rem; font-weight: 700; animation: fadeUp 0.4s ease-out;
}
@keyframes fadeUp { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.specialist-join-dot { width: 14px; height: 14px; border-radius: 50%; display: inline-block; }
.specialist-join-text { letter-spacing: 0.02em; }
.specialist-join-role { color: var(--fg-muted, #8888a0); font-weight: 500; }

/* chat input row */
.session-input-area { padding-top: 8px; }
.session-input-row {
  display: flex; align-items: flex-end; gap: 8px;
  background: var(--card-bg, #13131c);
  border: 1px solid var(--card-border, #1e1e2e);
  border-radius: 14px; padding: 8px 8px 8px 12px;
}
.session-input-row textarea {
  flex: 1; background: transparent; border: none; outline: none; color: var(--fg, #f0f0f0);
  font-family: 'Space Grotesk', sans-serif; font-size: 0.95rem; resize: none;
  min-height: 36px; max-height: 140px; line-height: 1.4; padding: 6px 0;
}
.session-input-row textarea::placeholder { color: var(--fg-muted, #8888a0); }
.session-input-row button {
  appearance: none; border: none; cursor: pointer;
  width: 38px; height: 38px; border-radius: 50%;
  background: linear-gradient(135deg, #4ecaff, #67e8f9);
  color: #0a0a10;
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.2s;
}
.session-input-row button svg { width: 16px; height: 16px; }
.session-input-row button:disabled { opacity: 0.4; cursor: not-allowed; }

/* ── Lyrics panel ─────────────────────────────────────────────── */
.tab-section-stack { display: flex; flex-direction: column; gap: 14px; }
.lyrics-section-card {
  background: var(--card-bg, #13131c);
  border: 1px solid var(--card-border, #1e1e2e);
  border-radius: 14px; padding: 16px;
}
.lyrics-section-head { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.lyrics-section-letter {
  width: 28px; height: 28px; border-radius: 8px;
  background: rgba(78,202,255,0.12); border: 1px solid rgba(78,202,255,0.20);
  display: flex; align-items: center; justify-content: center;
  font-family: 'Syne', sans-serif; font-weight: 700; font-size: 0.9rem;
}
.lyrics-section-label {
  font-family: 'Syne', sans-serif; font-weight: 700; font-size: 0.95rem;
  color: var(--fg, #f0f0f0); text-transform: capitalize;
}
.lyrics-section-textarea {
  width: 100%; background: var(--bg, #0a0a10);
  border: 1px solid var(--card-border, #1e1e2e); border-radius: 10px;
  padding: 12px; color: var(--fg, #f0f0f0);
  font-family: 'Space Grotesk', sans-serif; font-size: 0.95rem;
  min-height: 90px; resize: vertical; outline: none;
  transition: border-color 0.2s; box-sizing: border-box;
}
.lyrics-section-textarea:focus { border-color: rgba(78,202,255,0.5); }
.lyrics-section-actions { display: flex; gap: 8px; margin-top: 10px; }
.lyrics-section-btn {
  appearance: none; border: none; cursor: pointer;
  background: linear-gradient(135deg, #4ecaff, #67e8f9);
  color: #0a0a10; font-weight: 700; font-family: 'Syne', sans-serif; font-size: 0.82rem;
  padding: 8px 14px; border-radius: 8px;
}
.lyrics-section-btn-secondary {
  appearance: none; cursor: pointer;
  background: transparent; color: var(--fg-muted, #8888a0);
  border: 1px solid var(--card-border, #1e1e2e); font-weight: 600;
  padding: 8px 14px; border-radius: 8px; font-family: 'Space Grotesk', sans-serif;
  font-size: 0.82rem; transition: color 0.2s, border-color 0.2s;
}
.lyrics-section-btn-secondary:hover { color: var(--fg, #f0f0f0); border-color: rgba(255,255,255,0.15); }

.lyrics-tools { display: flex; gap: 10px; margin-top: 10px; }
.lyrics-tool-link {
  display: flex; flex-direction: column; gap: 2px;
  background: var(--card-bg, #13131c); border: 1px solid var(--card-border, #1e1e2e);
  border-radius: 12px; padding: 12px 14px; color: var(--fg, #f0f0f0);
  text-decoration: none; transition: background 0.2s;
}
.lyrics-tool-link:hover { background: rgba(255,255,255,0.04); }
.lyrics-tool-link strong { font-family: 'Syne', sans-serif; font-size: 0.9rem; }
.lyrics-tool-link span { color: var(--fg-muted, #8888a0); font-size: 0.82rem; }

/* ── Audio sub-tabs ───────────────────────────────────────────── */
.audio-subtabs {
  display: flex; gap: 6px; margin-bottom: 14px; overflow-x: auto;
  border-bottom: 1px solid var(--card-border, #1e1e2e);
}
.audio-subtab {
  appearance: none; border: none; background: transparent;
  color: var(--fg-muted, #8888a0); cursor: pointer;
  font-family: 'Syne', sans-serif; font-size: 0.82rem; font-weight: 700;
  padding: 8px 12px; border-bottom: 2px solid transparent; transition: color 0.2s;
}
.audio-subtab.is-active { color: var(--fg, #f0f0f0); border-bottom-color: var(--accent, #ef4444); }

.audio-subpanel { display: none; }
.audio-subpanel.is-active { display: block; }

.audio-card {
  background: var(--card-bg, #13131c); border: 1px solid var(--card-border, #1e1e2e);
  border-radius: 14px; padding: 18px;
}
.audio-card-head { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.audio-card-icon {
  width: 36px; height: 36px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: 'Syne', sans-serif; font-weight: 700; color: #fff; flex-shrink: 0;
}
.audio-card-name { font-family: 'Syne', sans-serif; font-weight: 700; font-size: 1rem; color: var(--fg, #f0f0f0); }
.audio-card-role { color: var(--fg-muted, #8888a0); font-size: 0.78rem; }
.audio-card-sub { color: var(--fg-muted, #8888a0); font-size: 0.88rem; margin: 6px 0 14px; line-height: 1.5; }

.beat-prompt {
  width: 100%; box-sizing: border-box; background: var(--bg, #0a0a10);
  border: 1px solid var(--card-border, #1e1e2e); border-radius: 10px;
  padding: 10px 12px; color: var(--fg, #f0f0f0);
  font-family: 'Space Grotesk', sans-serif; font-size: 0.92rem;
  resize: vertical; min-height: 56px; outline: none; margin-bottom: 10px;
}
.beat-prompt:focus { border-color: rgba(239,68,68,0.5); }
.beat-genre-chips { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 10px; }
.beat-genre-chip {
  appearance: none; border: 1px solid var(--card-border, #1e1e2e);
  background: rgba(255,255,255,0.04); color: var(--fg-muted, #8888a0);
  border-radius: 999px; padding: 6px 12px; cursor: pointer;
  font-family: 'Space Grotesk', sans-serif; font-size: 0.8rem;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.beat-genre-chip:hover { color: var(--fg, #f0f0f0); }
.beat-genre-chip.is-selected {
  color: #fff; border-color: rgba(239,68,68,0.6);
  background: rgba(239,68,68,0.15);
}
.beat-bpm-row { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.beat-bpm-row label { color: var(--fg-muted, #8888a0); font-size: 0.85rem; }
.beat-bpm-row input {
  width: 80px; background: var(--bg, #0a0a10); border: 1px solid var(--card-border, #1e1e2e);
  border-radius: 8px; padding: 6px 10px; color: var(--fg, #f0f0f0);
  font-family: 'Space Grotesk', sans-serif;
}
.beat-generate {
  appearance: none; border: none; cursor: pointer;
  background: linear-gradient(135deg, #ef4444, #c847f4);
  color: #fff; font-weight: 700; font-family: 'Syne', sans-serif;
  padding: 10px 16px; border-radius: 10px; font-size: 0.88rem;
  transition: opacity 0.2s;
}
.beat-generate:hover { opacity: 0.92; }
.beat-result { margin-top: 14px; display: none; }
.beat-result-line { font-size: 0.88rem; color: var(--fg, #f0f0f0); margin-bottom: 6px; line-height: 1.4; }
.beat-result-error { color: #ef4444; }
.beat-save-btn {
  appearance: none; border: 1px solid rgba(34,197,94,0.5); background: rgba(34,197,94,0.12);
  color: #22c55e; font-family: 'Syne', sans-serif; font-weight: 700;
  font-size: 0.82rem; padding: 8px 14px; border-radius: 8px; cursor: pointer;
  margin-top: 6px;
}
.beat-save-btn:disabled { opacity: 0.6; cursor: not-allowed; }

.mix-review-btn {
  appearance: none; border: none; cursor: pointer;
  background: linear-gradient(135deg, #fb923c, #fbbf24);
  color: #0a0a10; font-weight: 700; font-family: 'Syne', sans-serif;
  padding: 10px 16px; border-radius: 10px; font-size: 0.88rem;
}
.mix-result { margin-top: 14px; display: none; background: rgba(251,146,60,0.08); padding: 12px; border-radius: 10px; border: 1px solid rgba(251,146,60,0.25); }

.audio-card-open-standalone {
  display: inline-block; margin-top: 10px; color: var(--fg-muted, #8888a0);
  font-size: 0.82rem; text-decoration: none; border: 1px solid var(--card-border, #1e1e2e);
  padding: 8px 12px; border-radius: 8px; transition: color 0.2s, border-color 0.2s;
}
.audio-card-open-standalone:hover { color: var(--fg, #f0f0f0); border-color: rgba(255,255,255,0.15); }

/* ── Blueprint ────────────────────────────────────────────────── */
.blueprint-wrap { padding: 8px 0; }
.blueprint-loading { color: var(--fg-muted, #8888a0); font-size: 0.92rem; padding: 14px 4px; }
.blueprint-list { display: flex; flex-direction: column; gap: 8px; }
.blueprint-row {
  display: flex; align-items: center; gap: 10px;
  background: var(--card-bg, #13131c); border: 1px solid var(--card-border, #1e1e2e);
  border-radius: 10px; padding: 12px 14px;
}
.blueprint-num {
  width: 28px; height: 28px; border-radius: 50%;
  background: rgba(200,71,244,0.15); border: 1px solid rgba(200,71,244,0.30);
  display: flex; align-items: center; justify-content: center;
  font-family: 'Syne', sans-serif; font-weight: 700; font-size: 0.85rem;
  color: #c847f4;
}
.blueprint-key {
  font-family: 'Syne', sans-serif; font-weight: 700; font-size: 0.95rem;
  color: var(--fg, #f0f0f0); text-transform: capitalize;
}
.blueprint-hint { color: var(--fg-muted, #8888a0); font-size: 0.78rem; }
.blueprint-foot { color: var(--fg-muted, #8888a0); font-size: 0.82rem; margin-top: 14px; }

/* ── Files ────────────────────────────────────────────────────── */
.files-wrap { display: flex; flex-direction: column; gap: 14px; }
.files-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.files-card {
  background: var(--card-bg, #13131c); border: 1px solid var(--card-border, #1e1e2e);
  border-radius: 14px; padding: 16px;
}
.files-card-wide { grid-column: 1 / -1; }
.files-card-head { font-family: 'Syne', sans-serif; font-weight: 700; font-size: 0.95rem; color: var(--fg, #f0f0f0); margin-bottom: 4px; }
.files-card-sub { color: var(--fg-muted, #8888a0); font-size: 0.85rem; margin-bottom: 10px; }
.files-list { color: var(--fg-muted, #8888a0); font-size: 0.88rem; }
.files-version-row {
  display: flex; align-items: baseline; gap: 12px; padding: 6px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.files-version-row:last-child { border-bottom: none; }
.files-version-label { font-weight: 600; color: var(--fg, #f0f0f0); font-family: 'Syne', sans-serif; font-size: 0.88rem; }
.files-version-meta { color: var(--fg-muted, #8888a0); font-size: 0.76rem; }

/* ── Bottom nav (kept consistent across studio) ─────────────── */
.mobile-bottom-nav .mbn-tab.active { color: var(--accent, #4ecaff); }
.mobile-bottom-nav .mbn-tab.active .mbn-tab-icon svg { stroke: var(--accent, #4ecaff); }

/* ── color tokens (mirror studio.ejs) ─────────────────────────── */
:root {
  --studio-cyan: #4ecaff;
  --studio-purple: #c847f4;
  --studio-amber: #f59e0b;
  --studio-green: #22c55e;
}

/* ── responsive ────────────────────────────────────────────────── */
@media (max-width: 720px) {
  .files-row { grid-template-columns: 1fr; }
  .studio-tab { font-size: 0.78rem; padding: 8px 6px; }
  .session-title { font-size: 0.95rem; }
}
@media (max-width: 480px) {
  .studio-tabs { padding: 6px 8px; }
  .studio-tab { font-size: 0.74rem; padding: 8px 4px; }
  .session-header { padding: 10px 12px 6px; }
  .studio-tabpanels { padding: 10px 12px 14px; }
}