/* ═══════════════════════════════════════════════════════════════════════════
   Practice theme — neutral studio dark (default dark mode)
   Flat gray-black chrome; color lives on chord tones and keys only.
   Pair with theme-workbook (light).
   ═══════════════════════════════════════════════════════════════════════════ */

body.theme-practice {
  --surface-deep: #08080a;
  --surface: #0e0e11;
  --panel: #111114;
  --panel-raised: #18181c;
  --panel-alt: #0c0c0e;
  --ink: #ededed;
  --ink-soft: #a8a8a8;
  --ink-muted: #6b6b6b;
  --chrome: #f0f0f0;
  --chrome-dim: #525252;

  --bg: var(--surface);
  --bg2: var(--panel);
  --bg3: var(--panel-raised);
  --bg4: #222222;
  --border: #242424;
  --border2: #333333;
  --text: var(--ink);
  --text2: var(--ink-soft);
  --text3: var(--ink-muted);
  --tab-link: #888888;
  --tab-link-hover: var(--ink);
  --tab-studios: #7ec4b8;
  --tab-studios-hover: #9ed8cc;
  --tab-support: #c8a048;
  --tab-support-hover: #e0b858;
  --tab-support-active: #a88030;
  --gold: var(--chrome);
  --gold2: var(--chrome);
  --accent-light: rgba(255, 255, 255, 0.06);

  --pr-subtitle: #949494;
  --pr-coral: #c07868;
  --pr-sage: #68a888;
  --pr-violet: #9080b8;

  --c-root: #5aa8e8;
  --c-3rd: #68c060;
  --c-b3: #68c060;
  --c-b7: #e8a040;
  --c-9th: #a888e0;
  --c-s9: #e06048;
  --c-b5: #e08858;
  --c-13th: #48b890;
  --c-m7: #48b890;

  --c-root-bg: #1a3850;
  --c-3rd-bg: #1e4018;
  --c-b7-bg: #3a3018;
  --c-9th-bg: #302050;
  --c-s9-bg: #4a1810;
  --c-13th-bg: #0a3830;
  --c-m7-bg: #0a3830;

  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Source Sans 3', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', 'Consolas', monospace;

  --radius: 6px;
  --radius-sm: 4px;
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.45);
  --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(255, 255, 255, 0.04);
}

html.theme-practice {
  background: #070709;
}

html.theme-practice,
body.theme-practice {
  min-height: 100%;
}

body.theme-practice {
  background: transparent;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.65;
}

/* Fixed backdrop — visible behind semi-transparent chrome and between cards */
body.theme-practice::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-color: #070709;
  background-image:
    radial-gradient(ellipse 70% 45% at 50% -5%, rgba(140, 155, 200, 0.11) 0%, transparent 55%),
    radial-gradient(ellipse 130% 90% at 50% 110%, #020204 0%, transparent 55%),
    linear-gradient(180deg, #1e1e28 0%, #12121a 38%, #0a0a0f 72%, #070709 100%);
}

/* ── Header ── */
body.theme-practice .site-header {
  padding: 24px 48px 20px;
  background: rgba(17, 17, 20, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.04);
  position: relative;
  z-index: 2;
}
body.theme-practice .site-header::before { display: none; }
body.theme-practice .site-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 6px;
}
body.theme-practice .site-header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
body.theme-practice .site-logo {
  flex-shrink: 0;
  display: block;
  border-radius: 6px;
}
body.theme-practice .site-header h1 {
  font-family: var(--font-sans);
  font-size: 26px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.01em;
  margin-bottom: 0;
}
body.theme-practice .site-header .subtitle {
  font-size: 13px;
  color: var(--ink-soft);
  font-weight: 400;
  max-width: 52em;
  line-height: 1.5;
}

/* ── Tabs ── */
body.theme-practice .tab-bar {
  background: rgba(12, 12, 14, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 0 48px;
  top: 0;
  z-index: 10;
}
body.theme-practice .tab-btn,
body.theme-practice a.tab-btn--link {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  color: var(--tab-link);
  padding: 12px 16px 10px;
  border-bottom: 2px solid transparent;
}
body.theme-practice .tab-btn:hover,
body.theme-practice a.tab-btn--link:hover {
  color: var(--ink);
}
body.theme-practice .tab-btn.active {
  color: var(--chrome);
  border-bottom-color: var(--chrome);
}
body.theme-practice .tab-btn[data-tab="progressions"].active {
  color: #e8a888;
  border-bottom-color: var(--pr-coral);
}
body.theme-practice .tab-btn[data-tab="theory"].active {
  color: #88c8a8;
  border-bottom-color: var(--pr-sage);
}
body.theme-practice .tab-btn[data-tab="tools"].active {
  color: #b8a8e0;
  border-bottom-color: var(--pr-violet);
}
body.theme-practice .tab-btn[data-tab="studios"] { color: var(--tab-studios); }
body.theme-practice .tab-btn[data-tab="studios"]:hover,
body.theme-practice .tab-btn[data-tab="studios"].active {
  color: var(--tab-studios-hover);
  border-bottom-color: var(--tab-studios);
}
body.theme-practice .tab-btn[data-tab="support"] {
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--tab-support);
  filter: none;
  -webkit-text-fill-color: unset;
}
body.theme-practice .tab-btn[data-tab="support"]:hover {
  color: var(--tab-support-hover);
}
body.theme-practice .tab-btn[data-tab="support"].active {
  color: var(--tab-support-active);
  border-bottom-color: var(--tab-support);
  filter: none;
}

/* ── Sub-nav ── */
body.theme-practice .key-nav,
body.theme-practice .prog-top-nav,
body.theme-practice .legend,
body.theme-practice .theory-nav,
body.theme-practice .tools-nav {
  background: rgba(10, 10, 12, 0.72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 10px 48px;
}
body.theme-practice .key-nav a,
body.theme-practice .prog-top-nav a,
body.theme-practice .theory-nav a,
body.theme-practice .tools-nav a {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--ink-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel);
  padding: 4px 10px;
}
body.theme-practice .key-nav a:hover,
body.theme-practice .prog-top-nav a:hover,
body.theme-practice .theory-nav a:hover,
body.theme-practice .tools-nav a:hover {
  color: var(--chrome);
  border-color: var(--border2);
  background: var(--accent-light);
}

/* ── Workbook ── */
body.theme-practice .key-section {
  padding: 36px 48px 44px;
  border-bottom: 1px solid var(--border);
  background: transparent;
}
body.theme-practice .key-section:nth-child(even) {
  background: rgba(255, 255, 255, 0.018);
}
body.theme-practice .key-title {
  font-family: var(--font-sans);
  font-size: 28px;
  font-weight: 700;
  color: var(--ink);
}
body.theme-practice .key-meta {
  font-size: 11px;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: var(--font-mono);
}
body.theme-practice .key-info {
  font-size: 13px;
  background: var(--panel-raised);
  border-left: 3px solid var(--border2);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--ink-soft);
  margin-bottom: 20px;
  padding: 10px 14px;
}
body.theme-practice .key-info span {
  color: var(--chrome);
  font-weight: 600;
}

body.theme-practice .section-label,
body.theme-practice .prog-subsection-title,
body.theme-practice .blues-scale-select-label,
body.theme-practice .legend-caption,
body.theme-practice .voicing-label,
body.theme-practice .hand-tag,
body.theme-practice .prog-card-tag,
body.theme-practice .theory-chapter-sub {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--pr-subtitle);
}
body.theme-practice .section-label {
  border-bottom: 1px solid var(--border);
  padding-bottom: 6px;
  margin-bottom: 14px;
}
body.theme-practice .prog-subsection-title {
  margin: 16px 0 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
body.theme-practice .prog-subsection-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}
body.theme-practice .hand-tag {
  display: inline-block;
  font-size: 9px;
  padding: 1px 5px;
  border-radius: var(--radius-sm);
  background: var(--panel-raised);
  border: 1px solid var(--border2);
  color: var(--ink-soft);
}
body.theme-practice .legend-caption {
  margin-left: auto;
  font-size: 11px;
}

/* ── Chord cards ── */
body.theme-practice .chord-card {
  background: linear-gradient(165deg, #141418 0%, var(--panel) 55%, #0e0e11 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}
body.theme-practice .chord-card:hover {
  border-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.06);
}
body.theme-practice .chord-card.card-ii { border-left: 3px solid #6868b8; }
body.theme-practice .chord-card.card-v  { border-left: 3px solid #b05040; }
body.theme-practice .chord-card.card-i  { border-left: 3px solid #389870; }
body.theme-practice .chord-card-header {
  background: var(--panel-raised);
  border-bottom: 1px solid var(--border);
  padding: 10px 14px;
}
body.theme-practice .chord-name {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
}
body.theme-practice .role-dom  { color: #b0b0b0; background: rgba(255, 255, 255, 0.08); }
body.theme-practice .role-ii   { color: #a0a0e8; background: rgba(90, 90, 180, 0.2); }
body.theme-practice .role-v    { color: #e88878; background: rgba(180, 60, 40, 0.2); }
body.theme-practice .role-i    { color: #60d0a0; background: rgba(30, 140, 90, 0.2); }

body.theme-practice .piano-wrap {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px;
  background: rgba(0, 0, 0, 0.2);
}
body.theme-practice .voicing-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
body.theme-practice .voicing-label span { color: var(--ink); font-weight: 600; }
body.theme-practice .vn { border-radius: var(--radius-sm); }
body.theme-practice .vn-5th {
  background: var(--bg4);
  color: var(--ink-soft);
}

/* ── Progressions ── */
body.theme-practice .prog-group {
  padding: 36px 48px 0;
  background: transparent;
}
body.theme-practice .prog-group:nth-child(even) {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02) 0%, transparent 100%);
}
body.theme-practice .prog-group-title {
  font-family: var(--font-sans);
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
}
body.theme-practice .prog-group-desc {
  font-size: 14px;
  color: var(--ink-soft);
  max-width: 42em;
}
body.theme-practice .prog-subgroup {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px dashed var(--border);
}
body.theme-practice .prog-subgroup-title {
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 700;
  color: var(--pr-coral);
}
body.theme-practice .prog-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
}
body.theme-practice .prog-card-header {
  background: var(--panel-raised);
  border-bottom: 1px solid var(--border);
}
body.theme-practice .form-bar {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
body.theme-practice .form-bar.turnaround {
  background: rgba(140, 155, 200, 0.07);
  border-color: rgba(140, 155, 200, 0.22);
  box-shadow: inset 3px 0 0 rgba(180, 195, 230, 0.6);
}
body.theme-practice .form-bar.highlight {
  background: rgba(104, 168, 136, 0.06);
  border-color: rgba(104, 168, 136, 0.2);
  box-shadow: inset 3px 0 0 var(--pr-sage);
}
body.theme-practice .playing-now {
  outline: 2px solid var(--chrome);
  outline-offset: -2px;
}
body.theme-practice .key-btn {
  font-family: var(--font-mono);
  font-size: 11px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--ink-soft);
}
body.theme-practice .key-btn:hover {
  border-color: var(--border2);
  color: var(--chrome);
}
body.theme-practice .key-btn.active {
  background: var(--chrome);
  color: var(--surface);
  border-color: var(--chrome);
  font-weight: 600;
}

body.theme-practice .play-btn,
body.theme-practice .play-prog-btn {
  background: transparent;
  border: 1px solid var(--border2);
  color: var(--ink-soft);
  border-radius: var(--radius-sm);
  font-weight: 600;
}
body.theme-practice .play-btn:hover,
body.theme-practice .play-prog-btn:hover {
  background: var(--accent-light);
  border-color: var(--chrome-dim);
  color: var(--chrome);
}
body.theme-practice .play-btn.is-playing,
body.theme-practice .play-prog-btn.is-playing {
  background: var(--chrome);
  color: var(--surface);
  border-color: var(--chrome);
}

body.theme-practice #voicing-dock {
  background: var(--panel);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}
body.theme-practice #voicing-picker button.active,
body.theme-practice #voicing-picker button:hover {
  background: var(--chrome);
  color: var(--surface);
  border-color: var(--chrome);
}

/* ── Theory ── */
body.theme-practice .theory-chapter {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  border-left: 4px solid var(--pr-sage);
}
body.theme-practice .theory-chapter h2 {
  font-family: var(--font-sans);
  font-weight: 700;
  color: var(--ink);
}
body.theme-practice .theory-chapter h3 {
  font-family: var(--font-sans);
  font-weight: 700;
  color: var(--pr-sage);
}
body.theme-practice .th-jazz  { background: rgba(90, 130, 180, 0.2); color: #88b8e8; }
body.theme-practice .th-gospel { background: rgba(120, 90, 160, 0.2); color: #b8a0e8; }
body.theme-practice .th-blues  { background: rgba(180, 90, 70, 0.2); color: #e8a088; }
body.theme-practice .theory-note {
  background: var(--panel-raised);
  border-left: 3px solid var(--border2);
  color: var(--ink-soft);
}

/* ── Modals ── */
body.theme-practice.prog-tools-open { overflow: hidden; }
body.theme-practice .prog-tools-overlay {
  background: rgba(10, 8, 6, 0.82);
}
body.theme-practice .prog-tools-sheet {
  background: var(--panel);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}
body.theme-practice .prog-tools-modal-header {
  border-bottom: 1px solid var(--border);
  background: var(--panel-raised);
}
body.theme-practice .prog-tools-modal-title {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 18px;
}
body.theme-practice .beginner-demo {
  background: var(--panel-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
body.theme-practice .prog-blues-scale,
body.theme-practice .blues-scale-block {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
body.theme-practice .blues-scale-select {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--ink);
  font-family: var(--font-mono);
}
body.theme-practice .blues-scale-ivv-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
@media (max-width: 960px) {
  body.theme-practice .blues-scale-ivv-row { grid-template-columns: 1fr; }
}

body.theme-practice .tooltip-inner {
  background: var(--panel-raised);
  border: 1px solid var(--border2);
  color: var(--ink);
  font-family: var(--font-mono);
}

/* ── Support / Studios ── */
body.theme-practice .support-page,
body.theme-practice .studios-page {
  padding: 36px 48px 48px;
  max-width: 42rem;
}
body.theme-practice .support-title,
body.theme-practice .studios-title {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 26px;
  color: var(--ink);
}
body.theme-practice .studios-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--tab-studios);
}
body.theme-practice .studios-lead,
body.theme-practice .support-letter p {
  color: var(--ink-soft);
  line-height: 1.65;
}
body.theme-practice .studios-points {
  border: 1px solid var(--border);
  background: var(--panel-raised);
  padding: 16px 18px;
  border-radius: var(--radius);
}
body.theme-practice .studios-cta,
body.theme-practice .support-email {
  background: var(--tab-studios);
  color: #0e1412;
  font-weight: 600;
  text-decoration: none;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
}

body.theme-practice.welcome-open { overflow: hidden; }
body.theme-practice .welcome-overlay {
  background: rgba(10, 8, 6, 0.85);
}
body.theme-practice .welcome-card {
  background: var(--panel);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
}
body.theme-practice .welcome-title {
  font-family: var(--font-sans);
  font-weight: 700;
  color: var(--ink);
}
body.theme-practice .welcome-cta {
  background: var(--chrome);
  color: var(--surface);
  font-weight: 700;
  border: none;
  border-radius: var(--radius-sm);
}

body.theme-practice .tip-me-badge,
body.theme-practice .donate-link.tip-me-badge {
  background: var(--panel-raised);
  color: var(--ink-soft);
  border: 1px solid var(--border2);
  filter: none;
}

/* ── Footer ── */
body.theme-practice[data-tab="theory"] .site-footer { margin-bottom: 72px; }
body.theme-practice[data-tab="theory"] .theory-page { padding-bottom: 88px; }
body.theme-practice .site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 20px 48px 28px;
  margin-bottom: 132px;
  border-top: 1px solid var(--border);
  background: var(--panel);
  font-size: 12px;
  color: var(--ink-muted);
}
body.theme-practice .site-footer a { color: var(--ink-soft); }
body.theme-practice .footer-suggestions {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-soft);
  border: 1px solid var(--border2);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  text-decoration: none;
}
body.theme-practice .footer-suggestions:hover {
  background: var(--accent-light);
  color: var(--chrome);
}

body.theme-practice .metro-btn.active {
  background: var(--chrome);
  color: var(--surface);
  border-color: var(--chrome);
}
body.theme-practice .progression-flow {
  background: var(--panel-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
}
body.theme-practice .prog-step-chord {
  font-family: var(--font-serif) !important;
}

/* ── Responsive (match workbook mobile tab grid) ── */
@media (max-width: 768px) {
  body.theme-practice .site-header { padding: 20px 20px 16px; }
  body.theme-practice .tab-bar,
  body.theme-practice .key-nav,
  body.theme-practice .legend,
  body.theme-practice .prog-top-nav { padding-left: 16px; padding-right: 16px; }
  body.theme-practice .key-section,
  body.theme-practice .prog-group { padding-left: 20px; padding-right: 20px; }
  body.theme-practice .support-page,
  body.theme-practice .studios-page { padding-left: 20px; padding-right: 20px; }
}

@media (max-width: 600px) {
  body.theme-practice { --tab-bar-sticky-offset: 72px; }
  body.theme-practice .site-header h1 { font-size: 22px; }
  body.theme-practice .tab-bar {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    padding: 0;
  }
  body.theme-practice .tab-btn {
    font-size: 10px;
    padding: 10px 4px 8px;
    min-height: 40px;
    white-space: normal;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1.25;
  }
  body.theme-practice .tab-label-full { display: none; }
  body.theme-practice .tab-label-short { display: inline; }
  body.theme-practice .key-nav,
  body.theme-practice .prog-top-nav,
  body.theme-practice .tools-nav {
    top: var(--tab-bar-sticky-offset);
  }
  body.theme-practice .site-footer {
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 16px 28px;
  }
}