:root {
  --deg-prime: #b91c1c;
  --deg-synergist: #c2410c;
  --deg-stabilizer: #2563eb;
  --deg-passive: #94a3b8;

  --nav-h: 82px;
  --gap: 12px;

  /* Type scale */
  --text-xs: 11px;
  /* badges, meta labels, fine print */
  --text-sm: 14px;
  /* secondary copy, filter chips, tab descriptions */
  --text-base: 15px;
  /* body text, exercise names, sheet content */
  --text-lg: 19px;
  /* card titles, section headers, sheet name */
  --text-xl: 24px;
  /* subsection headings, vocab display */
  --text-display: clamp(40px, 8vw, 64px);
  /* hero heading scale */

  /* Border radius scale */
  --r-xs: 4px;
  /* progress bars, thin insets */
  --r-sm: 8px;
  /* inline badges, small tags */
  --r-md: 14px;
  /* filter chips, sub-cards, row items */
  --r-lg: 18px;
  /* nav buttons, section cards */
  --r-xl: 22px;
  /* hero cards, detail sheet top */
  --r-full: 999px;
  /* pill badges */
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  color-scheme: light;
}

body {
  font-family: var(--font-body);
  background: var(--page-glow), linear-gradient(180deg, var(--bg-top) 0%, var(--bg) 100%);
  color: var(--text);
  min-height: 100dvh;
  padding-bottom: calc(var(--nav-h) + env(safe-area-inset-bottom));
  overscroll-behavior: none;
  transition: background 0.25s ease, color 0.2s ease;
}

body[data-theme="folk"] {
  /* Core surfaces / text / borders — acid green canvas, folk art naïve painting */
  --bg: #c0c84a;
  --bg-top: #ccd258;
  --page-glow: radial-gradient(ellipse at top center, rgba(255, 250, 200, 0.22), transparent 45%);
  --surface: rgba(252, 250, 228, 0.97);
  --surface-2: #eeeabc;
  --surface-3: #e4e0a8;
  --paper: #f8f6d8;
  --panel-bg: rgba(252, 250, 228, 0.97);
  --panel-bg-muted: rgba(244, 240, 212, 0.90);
  --sheet-bg: rgba(253, 251, 232, 0.988);
  --summary-card-bg: rgba(254, 252, 236, 0.86);
  --card-bg: rgba(253, 251, 232, 0.96);
  --card-bg-pressed: #eeeabc;
  --paper-card-bg: rgba(254, 252, 236, 0.88);
  --paper-card-bg-strong: rgba(255, 253, 240, 0.94);
  --paper-card-bg-soft: rgba(252, 250, 228, 0.80);

  --text: #18180a;
  --text-2: #565828;
  --accent: #c83828;
  --accent-soft: rgba(200, 56, 40, 0.09);
  --accent-2: #2a7878;
  --navy: #18180a;

  --border: rgba(26, 26, 10, 0.14);
  --border-strong: rgba(26, 26, 10, 0.24);

  /* Typography */
  --title-shadow: rgba(26, 26, 10, 0.14);
  --font-body: "DM Sans", "Helvetica Neue", Arial, sans-serif;
  --font-display: "Cormorant", Georgia, serif;
  --font-kicker: "DM Sans", "Helvetica Neue", Arial, sans-serif;
  --display-letterspacing: 0.02em;
  --display-transform: uppercase;
  --title-transform: none;
  --kicker-transform: uppercase;

  --kicker-size: 12px;
  --kicker-weight: 600;
  --kicker-letterspacing: 0.14em;
  --kicker-line-height: 1;
  --kicker-margin-bottom: 10px;

  --title-size: clamp(36px, 7.5vw, 58px);
  --title-weight: 600;
  --title-line-height: 0.93;
  --title-letterspacing: 0.01em;
  --title-margin-bottom: 10px;
  --title-shadow-x: 0px;
  --title-shadow-y: 1px;
  --title-shadow-blur: 8px;
  --title-stroke-width: 0px;
  --title-stroke-color: transparent;
  --title-shadow-stack: 0 1px 12px rgba(26, 26, 10, 0.16);

  /* Elevation / shadow */
  --shadow-card: 0 6px 18px rgba(26, 26, 10, 0.10);
  --shadow-panel: 0 6px 16px rgba(26, 26, 10, 0.08);
  --shadow-nav: 0 -10px 24px rgba(26, 26, 10, 0.12);
  --shadow-sheet: 0 -14px 32px rgba(26, 26, 10, 0.16);
  --shadow-control: 0 3px 8px rgba(26, 26, 10, 0.07);
  --shadow-hero: 0 8px 22px rgba(26, 26, 10, 0.10);
  --shadow-inline: 0 5px 14px rgba(26, 26, 10, 0.08);
  --shadow-pressed: inset 0 1px 0 rgba(255, 255, 255, 0.60);

  /* Hero / card / sheet / panel backgrounds */
  --hero-bg:
    linear-gradient(180deg, rgba(253, 251, 232, 0.97) 0%, rgba(248, 246, 224, 0.97) 100%);
  --sheet-handle-bg: linear-gradient(180deg, rgba(253, 251, 232, 0.988) 72%, rgba(253, 251, 232, 0));
  --overlay-scrim: rgba(18, 18, 8, 0.42);

  /* Controls and interactive surfaces */
  --control-bg: rgba(252, 250, 228, 0.86);
  --control-bg-strong: rgba(254, 252, 236, 0.94);
  --control-bg-hover: rgba(248, 246, 220, 0.94);
  --control-border: rgba(26, 26, 10, 0.14);
  --control-text: #18180a;
  --control-active-bg: linear-gradient(180deg, #18180a 0%, #2a2a10 100%);
  --control-active-text: #f8f6d8;
  --control-active-border: #2a2a10;
  --control-quiet-bg: rgba(248, 246, 220, 0.88);
  --control-quiet-text: #565828;
  --focus-ring-on-dark: rgba(248, 246, 224, 0.92);
  --input-bg: rgba(255, 253, 238, 0.96);
  --input-border: rgba(26, 26, 10, 0.13);
  --input-focus-ring: rgba(200, 56, 40, 0.14);
  --toggle-track-bg: rgba(238, 234, 200, 0.60);
  --toggle-track-border: rgba(26, 26, 10, 0.12);
  --toggle-active-bg: linear-gradient(180deg, #18180a 0%, #2a2a10 100%);
  --toggle-active-shadow: 0 6px 14px rgba(26, 26, 10, 0.18);
  --input-wash: linear-gradient(180deg, rgba(255, 255, 220, 0.24), rgba(255, 255, 220, 0));

  /* Navigation / dock — dark ink bar floating over green */
  --nav-bg: linear-gradient(180deg, rgba(20, 20, 10, 0.82), rgba(14, 14, 6, 0.68));
  --nav-border: rgba(26, 26, 10, 0.22);
  --nav-desktop-border: rgba(26, 26, 10, 0.18);
  --nav-text: rgba(248, 246, 224, 0.88);
  --nav-btn-bg: rgba(255, 255, 255, 0.04);
  --nav-btn-border: rgba(248, 246, 224, 0.10);
  --nav-btn-inset: inset 0 1px 0 rgba(255, 255, 220, 0.06);
  --nav-active-bg: linear-gradient(180deg, #f8f6d8 0%, #e8e6b8 100%);
  --nav-active-text: #18180a;
  --nav-active-border: rgba(248, 246, 224, 0.38);
  --dock-bg: rgba(252, 250, 228, 0.82);
  --dock-border: rgba(26, 26, 10, 0.14);
  --dock-text: rgba(24, 24, 10, 0.68);
  --dock-toggle-bg: rgba(252, 250, 228, 0.82);
  --dock-toggle-text: rgba(24, 24, 10, 0.68);
  --dock-toggle-bg-hover: rgba(254, 252, 236, 0.95);
  --dock-toggle-border-hover: rgba(26, 26, 10, 0.22);
  --dock-menu-bg: rgba(254, 252, 236, 0.97);
  --dock-swatch-ring: rgba(26, 26, 10, 0.14);
  --stepper-dot-border: rgba(248, 246, 224, 0.5);
  --stepper-dot-fill: #f8f6d8;
  --stepper-dot-hover: rgba(248, 246, 224, 0.88);
  --stepper-nav-bg: rgba(248, 246, 224, 0.16);
  --stepper-nav-border: rgba(248, 246, 224, 0.28);
  --stepper-nav-hover: rgba(248, 246, 224, 0.28);

  /* Section / label / note styling */
  --section-title-color: #18180a;
  --kicker-color: #6a6c28;
  --context-note-bg: rgba(238, 234, 200, 0.90);
  --context-note-border: rgba(26, 26, 10, 0.13);
  --context-note-text: #2a2a10;
  --empty-bg: transparent;
  --pill-bg: rgba(252, 250, 228, 0.90);
  --pill-text: #18180a;

  /* SVG body map / diagram styling */
  --body-outline: rgba(26, 26, 10, 0.68);
  --body-outline-soft: rgba(26, 26, 10, 0.50);
  --body-fill: rgba(254, 252, 236, 0.28);
  --body-axis: rgba(26, 26, 10, 0.20);
  --region-fill: rgba(253, 251, 232, 0.96);
  --region-fill-emphasis: rgba(255, 253, 238, 0.98);
  --region-stroke: rgba(200, 56, 40, 0.22);
  --region-callout: rgba(26, 26, 10, 0.44);
  --region-label: #18180a;
  --region-label-stroke: rgba(253, 251, 232, 0.96);
  --region-hover-fill: rgba(248, 246, 218, 0.98);
  --region-hover-stroke: rgba(200, 56, 40, 0.36);
  --region-highlight-fill: #c83828;
  --region-highlight-stroke: rgba(200, 56, 40, 0.40);
  --region-highlight-text: #f8f6d8;
  --region-highlight-callout: rgba(200, 56, 40, 0.80);
  --region-muted-opacity: 0.36;
  --region-muted-ink-opacity: 0.44;

  /* State / badge / tag styling */
  --badge-compound-bg: #f0e0b0;
  --badge-compound-text: #6a4a18;
  --badge-isolation-bg: #e8e4c8;
  --badge-isolation-text: #4a4820;
  --badge-combo-bg: #d8e8e4;
  --badge-combo-text: #1e5050;
  --badge-modality-bg: #f0eccc;
  --badge-modality-text: #18180a;
  --tag-bg: rgba(253, 251, 232, 0.90);
  --tag-text: #18180a;
  --tag-primary-bg: rgba(26, 26, 10, 0.06);
  --tag-primary-text: #18180a;
  --tag-primary-border: rgba(26, 26, 10, 0.20);
  --badge-consensus-bg: #d0e8c8;
  --badge-consensus-text: #1e4820;
  --badge-union-bg: #c8d8e8;
  --badge-union-text: #1a3858;
  --badge-gap-bg: #f0e0a0;
  --badge-gap-text: #6a4a10;
  --badge-override-bg: #e8d0e4;
  --badge-override-text: #522050;
  --badge-deferred-bg: #f0c8c0;
  --badge-deferred-text: #6a1818;
  --badge-cross-bg: #d0e8c8;
  --badge-cross-text: #1e4820;
  --badge-single-bg: #ece8c8;
  --badge-single-text: #4a4820;

  /* Mini-region chips — painterly, on cream card surface */
  --mini-legs-front-bg: #f0c8b8;
  --mini-legs-front-text: #7a2818;
  --mini-hamstrings-bg: #f0dca0;
  --mini-hamstrings-text: #7a5010;
  --mini-glutes-bg: #e4cce4;
  --mini-glutes-text: #622060;
  --mini-calves-bg: #c8e4c0;
  --mini-calves-text: #1e5820;
  --mini-core-bg: #c4d8f0;
  --mini-core-text: #1a3870;
  --mini-back-bg: #b8e0d8;
  --mini-back-text: #105850;
  --mini-shoulders-bg: #d8ccf0;
  --mini-shoulders-text: #402878;
  --mini-chest-bg: #f0dca8;
  --mini-chest-text: #7a4a10;
  --mini-arms-bg: #f0c8e0;
  --mini-arms-text: #6a1858;
  --mini-hips-bg: #f0d4b8;
  --mini-hips-text: #7a3818;
}

body[data-theme="dark"] {
  color-scheme: dark;

  /* Core surfaces / text / borders — warm olive, from embroidered denim */
  --bg: #131108;
  --bg-top: #1c1a0e;
  --page-glow: radial-gradient(ellipse at top, rgba(184, 147, 74, 0.07), transparent 50%);
  --surface: rgba(30, 27, 14, 0.96);
  --surface-2: #28230f;
  --surface-3: #342d18;
  --paper: #1a1809;
  --panel-bg: rgba(30, 27, 14, 0.96);
  --panel-bg-muted: rgba(38, 34, 18, 0.82);
  --sheet-bg: rgba(24, 21, 10, 0.985);
  --summary-card-bg: rgba(36, 32, 18, 0.9);
  --card-bg: rgba(28, 25, 12, 0.95);
  --card-bg-pressed: #1e1c0e;
  --paper-card-bg: rgba(32, 29, 15, 0.88);
  --paper-card-bg-strong: rgba(38, 34, 18, 0.94);
  --paper-card-bg-soft: rgba(30, 27, 14, 0.8);

  --text: #ead8b8;
  --text-2: #8c7f5e;
  --accent: #c4788a;
  --accent-soft: rgba(196, 120, 138, 0.10);
  --accent-2: #b88c42;
  --navy: #ead8b8;

  --border: rgba(184, 140, 66, 0.14);
  --border-strong: rgba(184, 140, 66, 0.26);

  /* Typography */
  --title-shadow: rgba(0, 0, 0, 0.4);
  --font-body: "DM Sans", "Helvetica Neue", Arial, sans-serif;
  --font-display: "Cormorant", Georgia, serif;
  --font-kicker: "DM Sans", "Helvetica Neue", Arial, sans-serif;
  --display-letterspacing: 0.02em;
  --display-transform: uppercase;
  --title-transform: none;
  --kicker-transform: uppercase;

  --kicker-size: 12px;
  --kicker-weight: 600;
  --kicker-letterspacing: 0.14em;
  --kicker-line-height: 1;
  --kicker-margin-bottom: 10px;

  --title-size: clamp(36px, 7.5vw, 58px);
  --title-weight: 600;
  --title-line-height: 0.93;
  --title-letterspacing: 0.01em;
  --title-margin-bottom: 10px;
  --title-shadow-x: 0px;
  --title-shadow-y: 2px;
  --title-shadow-blur: 24px;
  --title-stroke-width: 0px;
  --title-stroke-color: transparent;
  --title-shadow-stack: 0 4px 32px rgba(0, 0, 0, 0.55);

  /* Elevation / shadow */
  --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.32);
  --shadow-panel: 0 8px 20px rgba(0, 0, 0, 0.26);
  --shadow-nav: 0 -12px 28px rgba(0, 0, 0, 0.36);
  --shadow-sheet: 0 -16px 40px rgba(0, 0, 0, 0.44);
  --shadow-control: 0 4px 12px rgba(0, 0, 0, 0.22);
  --shadow-hero: 0 14px 32px rgba(0, 0, 0, 0.30);
  --shadow-inline: 0 6px 16px rgba(0, 0, 0, 0.24);
  --shadow-pressed: inset 0 1px 0 rgba(234, 216, 184, 0.05);

  /* Hero / card / sheet / panel backgrounds */
  --hero-bg:
    linear-gradient(180deg, rgba(32, 29, 14, 0.97) 0%, rgba(22, 20, 9, 0.99) 100%),
    linear-gradient(135deg, rgba(184, 140, 66, 0.05), transparent 55%);
  --sheet-handle-bg: linear-gradient(180deg, rgba(24, 21, 10, 0.985) 72%, rgba(24, 21, 10, 0));
  --overlay-scrim: rgba(0, 0, 0, 0.68);

  /* Controls and interactive surfaces */
  --control-bg: rgba(40, 36, 18, 0.84);
  --control-bg-strong: rgba(48, 43, 22, 0.92);
  --control-bg-hover: rgba(56, 50, 26, 0.92);
  --control-border: rgba(184, 140, 66, 0.16);
  --control-text: #ead8b8;
  --control-active-bg: linear-gradient(180deg, #ead8b8 0%, #c8b890 100%);
  --control-active-text: #1a1809;
  --control-active-border: rgba(234, 216, 184, 0.36);
  --control-quiet-bg: rgba(38, 34, 18, 0.88);
  --control-quiet-text: #8c7f5e;
  --focus-ring-on-dark: rgba(234, 216, 184, 0.92);
  --input-bg: rgba(26, 23, 11, 0.94);
  --input-border: rgba(184, 140, 66, 0.16);
  --input-focus-ring: rgba(196, 120, 138, 0.18);
  --toggle-track-bg: rgba(44, 40, 20, 0.58);
  --toggle-track-border: rgba(184, 140, 66, 0.12);
  --toggle-active-bg: linear-gradient(180deg, #ead8b8 0%, #c8b890 100%);
  --toggle-active-shadow: 0 6px 16px rgba(0, 0, 0, 0.30);
  --input-wash: linear-gradient(180deg, rgba(184, 140, 66, 0.04), rgba(184, 140, 66, 0));

  /* Navigation / dock */
  --nav-bg: linear-gradient(180deg, rgba(15, 13, 6, 0.82), rgba(12, 11, 5, 0.66));
  --nav-border: rgba(184, 140, 66, 0.10);
  --nav-desktop-border: rgba(184, 140, 66, 0.12);
  --nav-text: rgba(234, 216, 184, 0.75);
  --nav-btn-bg: rgba(255, 255, 255, 0.03);
  --nav-btn-border: rgba(184, 140, 66, 0.10);
  --nav-btn-inset: inset 0 1px 0 rgba(234, 216, 184, 0.04);
  --nav-active-bg: linear-gradient(180deg, #ead8b8 0%, #c8b890 100%);
  --nav-active-text: #1a1809;
  --nav-active-border: rgba(234, 216, 184, 0.36);
  --dock-bg: rgba(18, 16, 8, 0.78);
  --dock-border: rgba(184, 140, 66, 0.16);
  --dock-text: rgba(234, 216, 184, 0.72);
  --dock-toggle-bg: rgba(18, 16, 8, 0.78);
  --dock-toggle-text: rgba(234, 216, 184, 0.72);
  --dock-toggle-bg-hover: rgba(28, 25, 12, 0.94);
  --dock-toggle-border-hover: rgba(184, 140, 66, 0.28);
  --dock-menu-bg: rgba(22, 20, 9, 0.96);
  --dock-swatch-ring: rgba(234, 216, 184, 0.14);
  --stepper-dot-border: rgba(234, 216, 184, 0.36);
  --stepper-dot-fill: #ead8b8;
  --stepper-dot-hover: rgba(234, 216, 184, 0.82);
  --stepper-nav-bg: rgba(184, 140, 66, 0.08);
  --stepper-nav-border: rgba(184, 140, 66, 0.16);
  --stepper-nav-hover: rgba(184, 140, 66, 0.16);

  /* Section / label / note styling */
  --section-title-color: #ead8b8;
  --kicker-color: #6e6244;
  --context-note-bg: rgba(36, 32, 16, 0.9);
  --context-note-border: rgba(184, 140, 66, 0.12);
  --context-note-text: #c8b890;
  --empty-bg: transparent;
  --pill-bg: rgba(40, 36, 18, 0.88);
  --pill-text: #ead8b8;

  /* SVG body map / diagram styling */
  --body-outline: rgba(234, 216, 184, 0.60);
  --body-outline-soft: rgba(234, 216, 184, 0.40);
  --body-fill: rgba(184, 140, 66, 0.04);
  --body-axis: rgba(234, 216, 184, 0.18);
  --region-fill: rgba(36, 32, 16, 0.98);
  --region-fill-emphasis: rgba(44, 40, 20, 0.98);
  --region-stroke: rgba(120, 100, 55, 0.60);
  --region-callout: rgba(184, 160, 100, 0.50);
  --region-label: #ead8b8;
  --region-label-stroke: rgba(15, 13, 6, 0.96);
  --region-hover-fill: rgba(52, 46, 24, 0.98);
  --region-hover-stroke: rgba(160, 130, 72, 0.80);
  --region-highlight-fill: #c4788a;
  --region-highlight-stroke: rgba(196, 120, 138, 0.36);
  --region-highlight-text: #1a1809;
  --region-highlight-callout: rgba(196, 120, 138, 0.80);
  --region-muted-opacity: 0.30;
  --region-muted-ink-opacity: 0.40;

  /* State / badge / tag styling */
  --badge-compound-bg: #4a3a1c;
  --badge-compound-text: #e8c87a;
  --badge-isolation-bg: #2e2818;
  --badge-isolation-text: #b8a880;
  --badge-combo-bg: #3a2a38;
  --badge-combo-text: #d4b8d4;
  --badge-modality-bg: #2a2412;
  --badge-modality-text: #ead8b8;
  --tag-bg: rgba(40, 36, 18, 0.88);
  --tag-text: #ead8b8;
  --tag-primary-bg: rgba(234, 216, 184, 0.06);
  --tag-primary-text: #ead8b8;
  --tag-primary-border: rgba(184, 140, 66, 0.22);
  --badge-consensus-bg: #243020;
  --badge-consensus-text: #a8d0a0;
  --badge-union-bg: #1e2630;
  --badge-union-text: #a0bcd8;
  --badge-gap-bg: #3c2c14;
  --badge-gap-text: #d8b870;
  --badge-override-bg: #34243a;
  --badge-override-text: #c8aad4;
  --badge-deferred-bg: #3a2028;
  --badge-deferred-text: #d8a0b0;
  --badge-cross-bg: #243020;
  --badge-cross-text: #a8d0a0;
  --badge-single-bg: #2a2412;
  --badge-single-text: #b8a880;

  /* Mini-region chips — warm muted tones over olive base */
  --mini-legs-front-bg: #3e2820;
  --mini-legs-front-text: #e8b8a8;
  --mini-hamstrings-bg: #3c2e14;
  --mini-hamstrings-text: #e0c888;
  --mini-glutes-bg: #342030;
  --mini-glutes-text: #d4b0d8;
  --mini-calves-bg: #1e2e1e;
  --mini-calves-text: #a8d0a8;
  --mini-core-bg: #1e2430;
  --mini-core-text: #a8b8d8;
  --mini-back-bg: #183028;
  --mini-back-text: #90c8c0;
  --mini-shoulders-bg: #28203c;
  --mini-shoulders-text: #c0b0e0;
  --mini-chest-bg: #3c2810;
  --mini-chest-text: #e0c090;
  --mini-arms-bg: #301a38;
  --mini-arms-text: #d0a8e0;
  --mini-hips-bg: #3a2418;
  --mini-hips-text: #d8b898;
}

/* ── Layout ─────────────────────────────────────────────────────────────── */

.view {
  display: none;
  padding: var(--gap);
  max-width: 760px;
  margin: 0 auto;
}

.view.active {
  display: block;
}

.tab-hero {
  padding: 16px 16px 14px;
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  background: var(--hero-bg);
  box-shadow: var(--shadow-hero);
  margin-bottom: 12px;
}

.tab-kicker {
  color: var(--kicker-color);
  font-family: var(--font-kicker);
  font-size: var(--kicker-size, 28px);
  font-weight: var(--kicker-weight, 700);
  line-height: var(--kicker-line-height, 0.95);
  letter-spacing: var(--kicker-letterspacing, 0);
  text-transform: var(--kicker-transform, none);
  margin-bottom: var(--kicker-margin-bottom, 6px);
}

.tab-title {
  font-family: var(--font-display);
  font-size: var(--title-size, var(--text-display));
  font-weight: var(--title-weight, 400);
  line-height: var(--title-line-height, 0.9);
  letter-spacing: var(--title-letterspacing, var(--display-letterspacing));
  text-transform: var(--title-transform, var(--display-transform));
  margin-bottom: var(--title-margin-bottom, 6px);
  -webkit-text-stroke: var(--title-stroke-width, 0) var(--title-stroke-color, transparent);
  text-shadow: var(
    --title-shadow-stack,
    var(--title-shadow-x, 2px) var(--title-shadow-y, 2px) var(--title-shadow-blur, 0) var(--title-shadow)
  );
}

.tab-copy {
  color: var(--text-2);
  font-size: var(--text-sm);
  line-height: 1.45;
  max-width: 38rem;
}

/* ── Bottom nav ─────────────────────────────────────────────────────────── */

.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  min-height: var(--nav-h);
  background: var(--nav-bg);
  border-top: 1px solid var(--nav-border);
  backdrop-filter: blur(20px);
  display: flex;
  align-items: stretch;
  z-index: 100;
  padding: 8px 12px calc(8px + env(safe-area-inset-bottom));
  gap: 8px;
  box-shadow: var(--shadow-nav);
}

.nav-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: var(--nav-btn-bg);
  border: 1px solid var(--nav-btn-border);
  border-radius: var(--r-lg);
  cursor: pointer;
  color: var(--nav-text);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  min-height: 44px;
  transition: color 0.15s, background 0.15s, transform 0.15s, box-shadow 0.15s, border-color 0.15s;
  box-shadow: var(--nav-btn-inset);
}

.nav-btn svg {
  width: 22px;
  height: 22px;
  stroke-width: 1.8;
}

.nav-btn:active {
  transform: translateY(1px);
}

.nav-btn.active {
  color: var(--nav-active-text);
  background: var(--nav-active-bg);
  border-color: var(--nav-active-border);
  box-shadow: var(--toggle-active-shadow);
}

.theme-dock {
  position: fixed;
  left: 10px;
  bottom: calc(var(--nav-h) + env(safe-area-inset-bottom) + 10px);
  z-index: 130;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}

.theme-dock[hidden],
.theme-dock-menu[hidden] {
  display: none !important;
}

.theme-dock-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 30px;
  padding: 0 10px;
  border: 1px solid var(--dock-border);
  border-radius: var(--r-full);
  background: var(--dock-toggle-bg);
  color: var(--dock-toggle-text);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-control);
  transition: opacity 0.15s ease, color 0.15s ease, background 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
  opacity: 0.72;
}

.theme-dock-toggle:hover,
.theme-dock.open .theme-dock-toggle,
.theme-dock-toggle:focus-visible {
  opacity: 1;
  color: var(--navy);
  background: var(--dock-toggle-bg-hover);
  border-color: var(--dock-toggle-border-hover);
}

.theme-dock-toggle:active {
  transform: translateY(1px);
}

.theme-dock-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--bg-top), var(--accent));
  box-shadow: 0 0 0 1px var(--dock-swatch-ring);
}

.theme-dock-menu {
  display: grid;
  gap: 6px;
  min-width: 132px;
  padding: 8px;
  border: 1px solid var(--dock-border);
  border-radius: var(--r-lg);
  background: var(--dock-menu-bg);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow-panel);
}

.theme-option {
  display: grid;
  grid-template-columns: 12px 1fr;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 7px 8px;
  border: 1px solid transparent;
  border-radius: var(--r-full);
  background: transparent;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
}

.theme-option:hover,
.theme-option:focus-visible {
  background: var(--control-bg-hover);
  border-color: var(--dock-border);
}

.theme-option.active {
  background: var(--control-quiet-bg);
  border-color: var(--dock-border);
  color: var(--navy);
}

.theme-option-swatch {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--swatch-start), var(--swatch-end));
  box-shadow: 0 0 0 1px var(--dock-swatch-ring);
}

/* ── Search & filters ───────────────────────────────────────────────────── */

.search-bar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--input-wash);
  padding: var(--gap) 0 8px;
  backdrop-filter: blur(10px);
}

.ghost-btn {
  border: none;
  background: none;
  color: var(--accent);
  cursor: pointer;
  font-weight: 700;
}

.search-bar input {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--input-border);
  border-radius: var(--r-lg);
  background: var(--input-bg);
  font-size: var(--text-base);
  color: var(--text);
  outline: none;
  -webkit-appearance: none;
  box-shadow: var(--shadow-control);
}

.search-bar input:focus {
  border-color: var(--navy);
  box-shadow: 0 0 0 4px var(--input-focus-ring);
}

/* ── Focus-visible rings (keyboard navigation) ──────────────────────────── */
/* Suppress default outline globally; restore it via focus-visible only      */
:focus {
  outline: none;
}

.nav-btn:focus-visible,
.filter-chip:focus-visible,
.filter-tag:focus-visible,
.ghost-btn:focus-visible,
.view-toggle-btn:focus-visible,
.sheet-close:focus-visible,
.obs-nav-btn:focus-visible {
  outline: 2px solid var(--navy);
  outline-offset: 2px;
}

/* On colored backgrounds (nav bar) use white ring */
.nav-btn:focus-visible {
  outline-color: rgba(255, 255, 255, 0.9);
}

.filter-row {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 6px 0 4px;
  scrollbar-width: none;
}

.filter-row::-webkit-scrollbar {
  display: none;
}

.filter-chip {
  flex-shrink: 0;
  padding: 7px 13px;
  border-radius: var(--r-lg);
  border: 1px solid var(--control-border);
  background: var(--control-bg);
  font-size: var(--text-sm);
  color: var(--control-quiet-text);
  cursor: pointer;
  white-space: nowrap;
  min-height: 32px;
  display: flex;
  align-items: center;
  transition: background 0.15s, border-color 0.15s, color 0.15s, box-shadow 0.15s;
  box-shadow: var(--shadow-control);
}

.filter-chip.active {
  background: var(--control-active-bg);
  border-color: var(--control-active-border);
  color: var(--control-active-text);
}

.filter-chip.clear-btn {
  border-color: #fca5a5;
  color: var(--deg-prime);
}

.filter-panel {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 14px;
  margin-bottom: 8px;
  display: none;
  box-shadow: var(--shadow-panel);
}

.filter-panel.open {
  display: block;
}

.filter-panel-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--section-title-color);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin-bottom: 8px;
}

.filter-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.filter-tag {
  padding: 4px 10px;
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  font-size: var(--text-sm);
  color: var(--text-2);
  cursor: pointer;
  background: var(--paper-card-bg-soft);
  min-height: 30px;
  display: flex;
  align-items: center;
}

.filter-tag.active {
  background: var(--surface-2);
  border-color: var(--navy);
  color: var(--navy);
  font-weight: 600;
}

.active-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.mode-view {
  display: none;
}

.mode-view.active {
  display: block;
}

.active-filter-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border-radius: var(--r-full);
  background: var(--pill-bg);
  border: 1px solid var(--border);
  color: var(--pill-text);
  font-size: var(--text-xs);
  box-shadow: var(--shadow-control);
}

.active-filter-pill button {
  border: none;
  background: none;
  color: var(--text-2);
  cursor: pointer;
  font-size: var(--text-sm);
}

.hierarchy-picker {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.hierarchy-node {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  padding: 9px 11px;
  border-radius: var(--r-md);
  border: 1px solid var(--border);
  background: var(--paper-card-bg-soft);
  color: var(--text);
  cursor: pointer;
  text-align: left;
}

.hierarchy-node.active {
  border-color: var(--navy);
  background: var(--surface-2);
  color: var(--navy);
}

.hierarchy-node-main {
  display: flex;
  align-items: center;
  gap: 8px;
}

.hierarchy-node-kind {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-2);
}

.hierarchy-node.active .hierarchy-node-kind {
  color: var(--navy);
}

.hierarchy-children {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-left: 18px;
}

/* ── Result count ───────────────────────────────────────────────────────── */

.result-count {
  font-size: var(--text-sm);
  color: var(--text-2);
  margin: 4px 0 8px;
}

/* ── Exercise cards ─────────────────────────────────────────────────────── */

.exercise-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.exercise-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 14px 15px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-height: 44px;
  transition: border-color 0.15s, transform 0.15s, box-shadow 0.15s;
  -webkit-tap-highlight-color: transparent;
  box-shadow: var(--shadow-card);
}

.exercise-card:hover {
  transform: translateY(-1px);
  border-color: var(--border-strong);
}

.exercise-card:active {
  background: var(--card-bg-pressed);
}

.v2-card {
  gap: 10px;
}

.card-header {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  justify-content: space-between;
}

.card-title-wrap {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  min-width: 0;
  flex: 1;
}

.card-badges {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.card-name {
  font-size: var(--text-base);
  font-weight: 600;
  flex: 1;
  line-height: 1.35;
  letter-spacing: 0.01em;
}

.movement-glyph {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: var(--r-sm);
  background: var(--control-active-bg);
  color: var(--control-active-text);
  font-size: var(--text-lg);
  line-height: 1;
  box-shadow: var(--shadow-pressed);
}

.badge {
  flex-shrink: 0;
  align-self: flex-start;
  padding: 2px 7px;
  border-radius: var(--r-sm);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-compound {
  background: var(--badge-compound-bg);
  color: var(--badge-compound-text);
}

.badge-isolation {
  background: var(--badge-isolation-bg);
  color: var(--badge-isolation-text);
}

.badge-combo {
  background: var(--badge-combo-bg);
  color: var(--badge-combo-text);
}

.badge-modality {
  background: var(--badge-modality-bg);
  color: var(--badge-modality-text);
}

.card-visual,
.mini-region-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.mini-region {
  padding: 5px 8px;
  border-radius: var(--r-full);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--paper-card-bg-soft);
  border: 1px solid var(--border);
}

.mini-region-legs_front {
  background: var(--mini-legs-front-bg);
  color: var(--mini-legs-front-text);
}

.mini-region-hamstrings {
  background: var(--mini-hamstrings-bg);
  color: var(--mini-hamstrings-text);
}

.mini-region-glutes {
  background: var(--mini-glutes-bg);
  color: var(--mini-glutes-text);
}

.mini-region-calves {
  background: var(--mini-calves-bg);
  color: var(--mini-calves-text);
}

.mini-region-core {
  background: var(--mini-core-bg);
  color: var(--mini-core-text);
}

.mini-region-back,
.mini-region-lower_back {
  background: var(--mini-back-bg);
  color: var(--mini-back-text);
}

.mini-region-shoulders {
  background: var(--mini-shoulders-bg);
  color: var(--mini-shoulders-text);
}

.mini-region-chest {
  background: var(--mini-chest-bg);
  color: var(--mini-chest-text);
}

.mini-region-arms {
  background: var(--mini-arms-bg);
  color: var(--mini-arms-text);
}

.mini-region-hips {
  background: var(--mini-hips-bg);
  color: var(--mini-hips-text);
}

.card-facts {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 18px;
  margin: 0;
}

.card-fact-line {
  font-size: var(--text-sm);
  line-height: 1.4;
  color: var(--text-2);
}

.card-note {
  font-size: var(--text-xs);
  line-height: 1.45;
  color: var(--text-2);
}

.muscle-pill {
  padding: 1px 7px;
  border-radius: var(--r-sm);
  font-size: var(--text-xs);
}

.pill-prime {
  background: rgba(185, 28, 28, 0.15);
  color: var(--deg-prime);
}

.pill-synergist {
  background: rgba(194, 65, 12, 0.15);
  color: var(--deg-synergist);
}

body[data-theme="folk"] .pill-prime {
  background: #fee2e2;
}

body[data-theme="folk"] .pill-synergist {
  background: #ffedd5;
}

.pill-stabilizer {
  background: var(--accent-soft);
  color: var(--accent);
}

.card-actions {
  display: flex;
  gap: 8px;
  margin-top: 2px;
}

.card-btn {
  border: 1px solid var(--control-border);
  background: var(--control-bg);
  color: var(--control-text);
  border-radius: var(--r-full);
  padding: 7px 12px;
  font-size: var(--text-xs);
  font-weight: 700;
  cursor: pointer;
  box-shadow: var(--shadow-control);
}

.card-btn.active {
  background: var(--control-active-bg);
  border-color: var(--control-active-border);
  color: var(--control-active-text);
}

.card-btn-primary {
  background: var(--control-active-bg);
  color: var(--control-active-text);
  border-color: var(--control-active-border);
  box-shadow: var(--shadow-control);
  width: 100%;
}

/* ── Detail sheet ───────────────────────────────────────────────────────── */

.sheet-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--overlay-scrim);
  display: none;
  align-items: flex-end;
}

.sheet-overlay.open {
  display: flex;
}

.sheet {
  width: min(calc(100vw - 12px), 680px);
  max-width: calc(100vw - 12px);
  margin: 0 auto;
  background: var(--sheet-bg);
  border-radius: var(--r-xl) 22px 0 0;
  max-height: 92dvh;
  overflow-y: auto;
  overflow-x: hidden;
  overscroll-behavior: contain;
  padding: 0 var(--gap) calc(var(--gap) + env(safe-area-inset-bottom));
  animation: slideUp 0.25s ease;
  box-shadow: var(--shadow-sheet);
}

.sheet.builder-open {
  height: 78dvh;
}

@keyframes slideUp {
  from {
    transform: translateY(100%);
  }

  to {
    transform: translateY(0);
  }
}

.sheet-handle {
  position: sticky;
  top: 0;
  z-index: 2;
  width: calc(100% + (var(--gap) * 2));
  height: 24px;
  margin: 0 calc(var(--gap) * -1) 12px;
  background: var(--sheet-handle-bg);
}

.sheet-handle::after {
  content: "";
  display: block;
  width: 36px;
  height: 4px;
  margin: 10px auto 0;
  background: var(--border);
  border-radius: var(--r-xs);
}

.sheet-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
  overflow-wrap: anywhere;
}

.sheet-subtitle {
  font-size: var(--text-sm);
  color: var(--text-2);
  margin-bottom: 16px;
  overflow-wrap: anywhere;
}

.sheet-badges {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.sheet-hero-panel {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: stretch;
  margin-bottom: 16px;
}

.sheet-glyph {
  min-width: 84px;
  border-radius: var(--r-lg);
  background: var(--control-active-bg);
  color: var(--control-active-text);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 12px 10px;
  box-shadow: var(--shadow-control);
}

.sheet-glyph span {
  font-size: 30px;
  line-height: 1;
}

.sheet-glyph small {
  margin-top: 6px;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.sheet-hero-copy {
  border-radius: var(--r-lg);
  background: var(--paper-card-bg);
  border: 1px solid var(--border);
  padding: 12px 14px;
}

.sheet-hero-copy p {
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--text);
}

.detail-summary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.detail-summary-card {
  padding: 12px;
  border-radius: var(--r-lg);
  background: var(--summary-card-bg);
  border: 1px solid var(--border);
}

.detail-summary-card span {
  display: block;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-2);
  margin-bottom: 4px;
}

.detail-summary-card strong {
  font-size: var(--text-base);
  color: var(--text);
}

.section-label {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--section-title-color);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 16px 0 8px;
}

.section-label-inline {
  margin: 0 0 6px;
}

.section-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 18px 0 8px;
}

.section-clear-btn {
  padding: 8px 12px;
  border-radius: var(--r-full);
  border: 1px solid var(--control-border);
  background: var(--control-bg-strong);
  color: var(--control-text);
  font-size: var(--text-xs);
  font-weight: 700;
}

.section-clear-btn.disabled {
  opacity: 0.5;
  cursor: default;
}

/* Muscle involvement bars */
.muscle-bars {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.muscle-bar {
  display: flex;
  align-items: center;
  gap: 8px;
}

.muscle-bar-name {
  font-size: var(--text-sm);
  width: 130px;
  flex-shrink: 0;
}

.muscle-bar-track {
  flex: 1;
  height: 6px;
  background: var(--surface-2);
  border-radius: var(--r-xs);
  overflow: hidden;
}

.muscle-bar-fill {
  height: 100%;
  border-radius: var(--r-xs);
  transition: width 0.3s;
}

.bar-prime {
  background: var(--deg-prime);
  width: 100%;
}

.bar-synergist {
  background: var(--deg-synergist);
  width: 65%;
}

.bar-stabilizer {
  background: var(--deg-stabilizer);
  width: 35%;
}

.bar-passive {
  background: var(--deg-passive);
  width: 20%;
}

.degree-tag {
  font-size: var(--text-xs);
  padding: 1px 6px;
  border-radius: var(--r-sm);
}

.deg-prime {
  background: #fee2e2;
  color: var(--deg-prime);
}

.deg-synergist {
  background: #ffedd5;
  color: var(--deg-synergist);
}

.deg-stabilizer {
  background: #dbeafe;
  color: #1e40af;
}

.deg-passive {
  background: var(--surface-2);
  color: var(--text-2);
}

/* Tags (patterns, JAs, equipment) */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  padding: 4px 10px;
  border-radius: var(--r-sm);
  font-size: var(--text-sm);
  background: var(--tag-bg);
  color: var(--tag-text);
  border: 1px solid var(--border);
}

.tag-primary {
  background: var(--tag-primary-bg);
  color: var(--tag-primary-text);
  border-color: var(--tag-primary-border);
}

/* Substitutes */
.sub-section-label {
  margin: 14px 0 8px;
  font-size: var(--text-xs);
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-2);
}

.sub-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sub-card {
  padding: 10px 12px;
  background: var(--paper-card-bg-strong);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  font-size: var(--text-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.sub-card>div {
  min-width: 0;
}

.sub-why {
  font-size: var(--text-xs);
  color: var(--text-2);
  margin-top: 2px;
}

.sub-family-details {
  margin-top: 14px;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--paper-card-bg-soft);
  overflow: hidden;
}

.sub-family-details summary {
  cursor: pointer;
  list-style: none;
  padding: 12px 14px;
  font-size: var(--text-sm);
  font-weight: 800;
  color: var(--navy);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.sub-family-details summary::-webkit-details-marker {
  display: none;
}

.sub-family-summary-copy {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sub-family-summary-hint {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-2);
}

.sub-family-summary-icon {
  flex: 0 0 auto;
  font-size: 16px;
  line-height: 1;
  color: var(--text-2);
  transition: transform 0.18s ease, color 0.18s ease;
}

.sub-family-details[open] .sub-family-summary-icon {
  transform: rotate(180deg);
  color: var(--navy);
}

.sub-family-details[open] .sub-family-summary-hint::before {
  content: "Tap to collapse";
}

.sub-family-details[open] .sub-family-summary-hint {
  font-size: 0;
}

.sub-family-content {
  padding: 0 12px 12px;
}

.sub-family-group+.sub-family-group {
  margin-top: 14px;
}

.sub-family-group-label {
  margin: 2px 0 8px;
  font-size: var(--text-xs);
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-2);
}

.sub-view-btn {
  border: 1px solid var(--border);
  background: var(--control-active-bg);
  color: var(--control-active-text);
  border-color: var(--control-active-border);
  border-radius: var(--r-full);
  padding: 7px 12px;
  font-size: var(--text-xs);
  font-weight: 700;
  cursor: pointer;
  flex-shrink: 0;
}

/* ── Builder View / Observatory ────────────────────────────────────────────── */

.sheet-mode-toggle {
  display: flex;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  overflow: hidden;
  margin-bottom: 16px;
}

.sheet-mode-btn {
  flex: 1;
  padding: 8px 12px;
  font-size: var(--text-sm);
  font-weight: 600;
  background: transparent;
  color: var(--text-2);
  border: none;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.sheet-mode-btn.active {
  background: var(--control-active-bg);
  color: var(--control-active-text);
}

.sheet-mode-btn:not(.active):hover {
  background: var(--surface-2);
  color: var(--text);
}

.obs-narrative {
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--text-2);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 12px 14px;
  margin-bottom: 14px;
}

.obs-stepper {
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--paper-card-bg);
}

.obs-stepper-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  background: var(--control-active-bg);
  color: var(--control-active-text);
}

.obs-stepper-center {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.obs-stage-label {
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.obs-step-dots {
  display: flex;
  gap: 6px;
  align-items: center;
}

.obs-step-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 2px solid color-mix(in srgb, var(--control-active-text) 50%, transparent);
  background: transparent;
  cursor: pointer;
  padding: 0;
  transition: background 0.15s, border-color 0.15s;
}

.obs-step-dot.active {
  background: var(--control-active-text);
  border-color: var(--control-active-text);
}

.obs-step-dot:not(.active):hover {
  border-color: color-mix(in srgb, var(--control-active-text) 90%, transparent);
}

.obs-nav-btn {
  background: color-mix(in srgb, var(--control-active-text) 18%, transparent);
  border: 1px solid color-mix(in srgb, var(--control-active-text) 28%, transparent);
  color: var(--control-active-text);
  border-radius: var(--r-sm);
  width: 34px;
  height: 34px;
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.12s;
}

.obs-nav-btn:hover:not(:disabled) {
  background: color-mix(in srgb, var(--control-active-text) 30%, transparent);
}

.obs-nav-btn:disabled {
  opacity: 0.3;
  cursor: default;
}

.obs-stage-content {
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.obs-stage-intro {
  font-size: var(--text-sm);
  color: var(--text-2);
  line-height: 1.5;
}

.obs-source-record {
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  overflow: hidden;
}

.obs-source-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
}

.obs-source-name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text);
  flex: 1;
}

.obs-source-tag {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-2);
  background: var(--surface-3);
  border-radius: var(--r-sm);
  padding: 2px 7px;
}

.obs-row-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.obs-group-label {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-2);
  margin-bottom: 2px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.obs-claim-row {
  display: flex;
  gap: 8px;
  padding: 4px 0;
  border-bottom: 1px solid var(--border);
  font-size: var(--text-sm);
  align-items: baseline;
}

.obs-claim-row:last-child {
  border-bottom: none;
}

.obs-claim-pred {
  color: var(--text-2);
  min-width: 100px;
  flex-shrink: 0;
}

.obs-claim-val {
  color: var(--text);
  word-break: break-word;
  min-width: 0;
}

.obs-warn-row .obs-claim-val {
  color: var(--accent);
}

.obs-conflict {
  display: flex;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 6px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: var(--text-sm);
}

.obs-conflict:last-child {
  border-bottom: none;
}

.obs-conflict-pred {
  font-weight: 700;
  color: var(--text);
  flex-shrink: 0;
}

.obs-conflict-desc {
  color: var(--text-2);
  flex: 1;
}

.obs-badge {
  font-size: var(--text-xs);
  font-weight: 700;
  border-radius: var(--r-sm);
  padding: 2px 8px;
  white-space: nowrap;
}

.obs-badge-consensus {
  background: var(--badge-consensus-bg);
  color: var(--badge-consensus-text);
}

.obs-badge-union {
  background: var(--badge-union-bg);
  color: var(--badge-union-text);
}

.obs-badge-gap {
  background: var(--badge-gap-bg);
  color: var(--badge-gap-text);
}

.obs-badge-override {
  background: var(--badge-override-bg);
  color: var(--badge-override-text);
}

.obs-badge-deferred {
  background: var(--badge-deferred-bg);
  color: var(--badge-deferred-text);
}

.obs-badge-cross {
  background: var(--badge-cross-bg);
  color: var(--badge-cross-text);
}

.obs-badge-single {
  background: var(--badge-single-bg);
  color: var(--badge-single-text);
}

.obs-empty {
  font-size: var(--text-sm);
  color: var(--text-2);
  padding: 4px 0;
}

.obs-graph-note {
  font-style: italic;
}

/* ────────────────────────────────────────────────────────────────────────── */

.ontology-details {
  margin-top: 16px;
  border-radius: var(--r-lg);
  background: var(--paper-card-bg);
  border: 1px solid var(--border);
  overflow: hidden;
}

.ontology-details summary {
  list-style: none;
  cursor: pointer;
  padding: 14px;
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--navy);
}

.ontology-details summary::-webkit-details-marker {
  display: none;
}

.ontology-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  padding: 0 14px 14px;
}

.ontology-grid div {
  padding: 10px;
  border-radius: var(--r-md);
  background: var(--paper-card-bg-soft);
  border: 1px solid var(--border);
}

.ontology-grid span {
  display: block;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-2);
  margin-bottom: 4px;
}

.ontology-grid strong {
  font-size: var(--text-sm);
  line-height: 1.4;
}


.insight-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.insight-pill {
  padding: 8px 12px;
  border-radius: var(--r-lg);
  background: var(--pill-bg);
  border: 1px solid var(--border);
  font-size: var(--text-sm);
  color: var(--pill-text);
}


/* ── Body map tab ────────────────────────────────────────────────────────── */

/* Desktop two-column layout */
@media (min-width: 680px) {
  #view-muscles.active {
    max-width: 920px;
    display: grid;
    grid-template-columns: 310px 1fr;
    grid-template-rows: auto 1fr;
    column-gap: 32px;
    align-items: start;
  }

  #view-muscles>.tab-hero {
    grid-column: 1 / -1;
  }

  .anatomy-col-left {
    position: sticky;
    top: 16px;
  }

  .anatomy-wrap svg {
    max-width: 100%;
  }
}

.view-toggle {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  margin-bottom: 12px;
  padding: 4px;
  border-radius: var(--r-lg);
  background: var(--toggle-track-bg);
  border: 1px solid var(--toggle-track-border);
}

.view-toggle-btn {
  padding: 10px 12px;
  border: 1px solid transparent;
  border-radius: var(--r-md);
  background: var(--control-bg);
  font-size: var(--text-sm);
  font-weight: 700;
  cursor: pointer;
  color: var(--control-text);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  box-shadow: var(--shadow-pressed);
}

.view-toggle-btn.active {
  background: var(--toggle-active-bg);
  border-color: var(--control-active-border);
  color: var(--control-active-text);
  box-shadow: var(--toggle-active-shadow);
}

.anatomy-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 14px;
}

.anatomy-wrap svg {
  width: 100%;
  max-width: 296px;
  height: auto;
}

.body-head,
.body-neck {
  fill: var(--body-fill);
  stroke: var(--body-outline-soft);
  stroke-width: 2.35;
}

.body-silhouette,
.body-leg {
  fill: none;
  stroke: var(--body-outline);
  stroke-width: 2.35;
}

.body-axis {
  fill: none;
  stroke: var(--body-axis);
  stroke-width: 1.9;
  stroke-linecap: round;
}

.muscle-region {
  cursor: pointer;
}

.muscle-region .region-fill {
  fill: var(--region-fill);
  stroke: var(--region-stroke);
  stroke-width: 3.5;
  stroke-linejoin: bevel;
  stroke-linecap: butt;
  transition: fill 0.16s ease, stroke 0.16s ease, opacity 0.16s ease, transform 0.16s ease;
}

#anatomy-front .muscle-region .region-fill,
#anatomy-front .muscle-region .region-fill-emphasis {
  clip-path: url(#front-body-clip);
}

#anatomy-back .muscle-region .region-fill,
#anatomy-back .muscle-region .region-fill-emphasis {
  clip-path: url(#back-body-clip);
}

.muscle-region .region-fill-emphasis {
  fill: var(--region-fill-emphasis);
  stroke-width: 4;
}

.muscle-region .region-callout {
  fill: none;
  stroke: var(--region-callout);
  stroke-width: 2.25;
  stroke-linecap: square;
  stroke-linejoin: miter;
  pointer-events: none;
  transition: stroke 0.16s ease, opacity 0.16s ease;
}

.muscle-region .region-label {
  fill: var(--region-label);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 650;
  letter-spacing: 0.01em;
  pointer-events: auto;
  cursor: pointer;
  user-select: none;
  transition: fill 0.16s ease, opacity 0.16s ease;
}

.muscle-region .region-label-outside {
  paint-order: stroke fill;
  stroke: var(--region-label-stroke);
  stroke-width: 3.2px;
}

.muscle-region .region-label-small {
  font-size: var(--text-xs);
  letter-spacing: 0.01em;
}

.muscle-region:hover .region-fill,
.muscle-region:active .region-fill {
  fill: var(--region-hover-fill);
  stroke: var(--region-hover-stroke);
}

.muscle-region.highlighted .region-fill {
  fill: var(--region-highlight-fill);
  stroke: color-mix(in srgb, var(--region-highlight-text) 60%, transparent);
}

.muscle-region.highlighted .region-label {
  fill: var(--region-highlight-text);
}

.muscle-region.highlighted .region-label-outside {
  fill: var(--region-highlight-fill);
}

.muscle-region.highlighted .region-callout {
  stroke: var(--region-highlight-callout);
}

.muscle-region.muted .region-fill {
  opacity: var(--region-muted-opacity);
}

.muscle-region.muted .region-callout,
.muscle-region.muted .region-label {
  opacity: var(--region-muted-ink-opacity);
}

.muscle-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.muscle-group-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  background: var(--paper-card-bg);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  cursor: pointer;
  font-size: var(--text-sm);
  box-shadow: var(--shadow-control);
  -webkit-tap-highlight-color: transparent;
}

.muscle-group-row:active {
  background: var(--surface-2);
}

.muscle-group-row.active {
  background: var(--surface-2);
  border-color: var(--navy);
  color: var(--navy);
  font-weight: 600;
}

.muscle-count {
  font-size: var(--text-xs);
  color: var(--text-2);
}

.muscle-group-row.active .muscle-count {
  color: var(--navy);
  opacity: 0.75;
}

#muscle-results-section {
  margin-top: 18px;
}

/* ── Vocabulary tab ─────────────────────────────────────────────────────── */

.vocab-section {
  margin-bottom: 12px;
}

.vocab-section-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 96px 24px;
  align-items: center;
  column-gap: 12px;
  padding: 13px 15px;
  background: var(--paper-card-bg);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  -webkit-tap-highlight-color: transparent;
  box-shadow: var(--shadow-card);
}

.muscle-header-label {
  min-width: 0;
}

.vocab-section-header .vocab-item-count {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  line-height: 1;
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 6px 12px 5px;
  border-radius: var(--r-full);
  min-width: 52px;
  text-align: center;
}

.muscle-header-count {
  justify-self: start;
}

.vocab-section-header.open {
  border-radius: var(--r-lg) var(--r-lg) 0 0;
}

.vocab-chevron {
  transition: transform 0.2s;
  font-size: var(--text-xs);
  color: var(--text-2);
  justify-self: end;
}

.vocab-section-header.open .vocab-chevron {
  transform: rotate(180deg);
}

.vocab-items {
  display: none;
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 var(--r-lg) var(--r-lg);
  overflow: hidden;
}

.vocab-items.open {
  display: block;
}

.vocab-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  font-size: var(--text-sm);
  background: var(--paper-card-bg-strong);
  -webkit-tap-highlight-color: transparent;
}

.vocab-item:last-child {
  border-bottom: none;
}

.vocab-item:active {
  background: var(--surface-2);
}

.vocab-item.active {
  background: var(--tag-primary-bg);
  color: var(--tag-primary-text);
  font-weight: 600;
}

.vocab-item.child {
  font-size: var(--text-sm);
}

.vocab-item-main {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.vocab-item-main small {
  color: var(--text-2);
  font-size: var(--text-xs);
  line-height: 1.35;
}

.vocab-item-count {
  font-size: var(--text-xs);
  color: var(--text-2);
  background: var(--surface-2);
  padding: 1px 7px;
  border-radius: var(--r-sm);
  flex-shrink: 0;
}

.vocab-item.active .vocab-item-count {
  background: var(--control-active-bg);
  color: var(--control-active-text);
}

.context-note {
  font-size: var(--text-sm);
  line-height: 1.4;
  margin-bottom: 12px;
  padding: 12px 14px;
  border-radius: var(--r-lg);
  background: var(--context-note-bg);
  border: 1px solid var(--context-note-border);
  color: var(--context-note-text);
  box-shadow: var(--shadow-inline);
}

#browse-results-section {
  margin-top: 18px;
}

.indent-0 {
  padding-left: 14px;
}

.indent-1 {
  padding-left: 28px;
}

.indent-2 {
  padding-left: 42px;
}

.indent-3 {
  padding-left: 56px;
}

/* ── Empty state ────────────────────────────────────────────────────────── */

.empty {
  text-align: center;
  padding: 48px 16px;
  color: var(--text-2);
  font-size: var(--text-base);
  background: var(--empty-bg);
}

.empty strong {
  color: var(--text);
}

.empty-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-top: 14px;
}

.empty-action-btn {
  border: 1px solid var(--control-border);
  background: var(--control-bg-strong);
  color: var(--control-text);
  border-radius: var(--r-full);
  padding: 8px 12px;
  font-size: var(--text-xs);
  font-weight: 700;
  cursor: pointer;
  box-shadow: var(--shadow-control);
}

/* ── Legend ─────────────────────────────────────────────────────────────── */

.degree-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 4px;
}

.muscle-degree-groups {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.muscle-degree-heading {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.muscle-tag {
  background: var(--paper-card-bg);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: var(--text-xs);
  color: var(--text-2);
}

.legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

@media (min-width: 740px) {
  .view {
    padding: 18px;
  }

  .tab-hero {
    padding: 20px 20px 18px;
  }

  .theme-dock {
    left: max(12px, calc(50% - 380px));
  }

  .bottom-nav {
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    width: min(760px, calc(100% - 24px));
    border: 1px solid var(--nav-desktop-border);
    border-radius: var(--r-xl) var(--r-xl) 0 0;
  }
}

@media (max-width: 480px) {
  .sheet {
    width: calc(100vw - 8px);
    max-width: calc(100vw - 8px);
    padding-left: 10px;
    padding-right: 10px;
  }

  .sheet-hero-panel {
    grid-template-columns: minmax(0, 1fr);
  }

  .sheet-glyph {
    min-width: 0;
  }

  .detail-summary-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .sub-card {
    flex-wrap: wrap;
  }

  .sub-view-btn {
    width: 100%;
  }

  .obs-source-header,
  .obs-claim-row {
    flex-wrap: wrap;
  }

  .obs-claim-pred {
    min-width: 0;
  }

  .obs-source-name,
  .obs-claim-val {
    overflow-wrap: anywhere;
  }
}

@media (prefers-reduced-motion: reduce) {
  body {
    transition: none;
  }

  .sheet {
    animation: none;
  }

  .bar-fill {
    transition: none;
  }

  * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}