/* ==========================================================================
   Blue Star Keys — design system
   Kid-first: big targets (56px+ buttons), high contrast, playful shapes.
   All colors flow through CSS custom properties; themes override via
   [data-theme]. Default (pirate) values also live on :root as a safety net.
   ========================================================================== */

/* ---------- tokens ---------- */
:root {
  --bsk-bg: #0B1E3A;
  --bsk-bg2: #123057;
  --bsk-panel: #F7F3E9;
  --bsk-panel2: #EFE6D0;
  --bsk-ink: #22314F;
  --bsk-ink-soft: #66708A;
  --bsk-on-bg: #F7F3E9;
  --bsk-on-bg-soft: rgba(247, 243, 233, 0.75);
  --bsk-accent: #2E6FE8;
  --bsk-accent-ink: #FFFFFF;
  --bsk-accent-soft: rgba(46, 111, 232, 0.14);
  --bsk-gold: #F5B301;
  --bsk-gold-deep: #C98F00;
  --bsk-good: #27A25B;
  --bsk-good-soft: rgba(39, 162, 91, 0.18);
  --bsk-bad: #E25B4E;
  --bsk-bad-soft: rgba(226, 91, 78, 0.16);
  --bsk-staff: #84795E;
  --bsk-note: #2E6FE8;
  --bsk-note-hit: #27A25B;
  --bsk-hitline: #F5B301;

  --bsk-radius-sm: 12px;
  --bsk-radius: 20px;
  --bsk-radius-lg: 28px;
  --bsk-shadow-1: 0 2px 8px rgba(4, 12, 28, 0.28);
  --bsk-shadow-2: 0 10px 30px rgba(4, 12, 28, 0.38);
  --bsk-shadow-glow: 0 0 24px rgba(245, 179, 1, 0.45);

  --bsk-font: "SF Pro Rounded", ui-rounded, -apple-system, BlinkMacSystemFont,
    "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --bsk-touch: 56px;
  --bsk-header-h: 60px;
}

[data-theme="pirate"] {
  --bsk-bg: #0B1E3A;
  --bsk-bg2: #123057;
  --bsk-panel: #F7F3E9;
  --bsk-panel2: #EFE6D0;
  --bsk-ink: #22314F;
  --bsk-ink-soft: #66708A;
  --bsk-on-bg: #F7F3E9;
  --bsk-on-bg-soft: rgba(247, 243, 233, 0.75);
  --bsk-accent: #2E6FE8;
  --bsk-gold: #F5B301;
  --bsk-good: #27A25B;
  --bsk-bad: #E25B4E;
  --bsk-staff: #84795E;
  --bsk-note: #2E6FE8;
  --bsk-note-hit: #27A25B;
  --bsk-hitline: #F5B301;
}

[data-theme="bluestar"] {
  --bsk-bg: #EAF1FD;
  --bsk-bg2: #D9E7FB;
  --bsk-panel: #FFFFFF;
  --bsk-panel2: #F2F6FE;
  --bsk-ink: #16233F;
  --bsk-ink-soft: #5D6B85;
  --bsk-on-bg: #16233F;
  --bsk-on-bg-soft: rgba(22, 35, 63, 0.7);
  --bsk-accent: #2E6FE8;
  --bsk-gold: #F5B301;
  --bsk-good: #1F9D55;
  --bsk-bad: #D9534F;
  --bsk-staff: #93A1BC;
  --bsk-note: #2E6FE8;
  --bsk-note-hit: #1F9D55;
  --bsk-hitline: #F5B301;
  --bsk-shadow-1: 0 2px 8px rgba(22, 35, 63, 0.12);
  --bsk-shadow-2: 0 10px 30px rgba(22, 35, 63, 0.16);
}

/* ---------- base ---------- */
* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
}

body {
  font-family: var(--bsk-font);
  color: var(--bsk-on-bg);
  background: linear-gradient(180deg, var(--bsk-bg) 0%, var(--bsk-bg2) 100%) fixed;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior-y: none;
  touch-action: manipulation;
  min-height: 100dvh;
}

button {
  font-family: inherit;
  border: none;
  cursor: pointer;
  background: none;
  color: inherit;
}

a { color: inherit; text-decoration: none; }

h1, h2, h3, p { margin: 0; }

img, svg, canvas { max-width: 100%; }

.sr-only {
  position: absolute; width: 1px; height: 1px;
  margin: -1px; padding: 0; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

#app {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  padding: env(safe-area-inset-top) env(safe-area-inset-right)
           env(safe-area-inset-bottom) env(safe-area-inset-left);
}

/* boot splash + noscript */
.bsk-boot {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  min-height: 60dvh;
}
.bsk-boot-logo { width: 88px; height: 88px; animation: bskBob 2.2s ease-in-out infinite; }
.bsk-boot-text { color: var(--bsk-on-bg-soft); font-size: 18px; }

.bsk-noscript {
  max-width: 480px;
  margin: 15vh auto;
  padding: 28px;
  background: var(--bsk-panel);
  color: var(--bsk-ink);
  border-radius: var(--bsk-radius);
  text-align: center;
}
.bsk-noscript h1 { font-size: 22px; margin-bottom: 8px; }

@keyframes bskBob {
  0%, 100% { transform: translateY(0) rotate(-2deg); }
  50% { transform: translateY(-10px) rotate(2deg); }
}

/* ---------- header ---------- */
.bsk-header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: var(--bsk-header-h);
  padding: 8px 14px;
  background: linear-gradient(180deg, var(--bsk-bg) 55%, transparent);
}

.bsk-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
}
.bsk-logo { width: 40px; height: 40px; filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3)); }
.bsk-title {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--bsk-on-bg);
  text-shadow: 0 1px 2px rgba(0,0,0,0.25);
}
[data-theme="bluestar"] .bsk-title { text-shadow: none; }

.bsk-header-right { display: flex; align-items: center; gap: 8px; }

.bsk-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  min-height: 40px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  color: var(--bsk-on-bg);
  font-size: 15px;
  font-weight: 700;
  border: 1.5px solid rgba(255, 255, 255, 0.18);
}
[data-theme="bluestar"] .bsk-chip {
  background: var(--bsk-panel);
  border-color: rgba(22, 35, 63, 0.12);
  box-shadow: var(--bsk-shadow-1);
}
.bsk-chip b { font-weight: 800; }
.chip-xp b { color: var(--bsk-gold); }
.chip-streak.cold { opacity: 0.55; }
.chip-bump { animation: bskChipBump 0.5s ease; }
@keyframes bskChipBump {
  0% { transform: scale(1); }
  40% { transform: scale(1.22); }
  100% { transform: scale(1); }
}

.bsk-iconbtn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  font-size: 22px;
  background: rgba(255, 255, 255, 0.12);
  border: 1.5px solid rgba(255, 255, 255, 0.18);
  transition: transform 0.15s ease;
}
[data-theme="bluestar"] .bsk-iconbtn {
  background: var(--bsk-panel);
  border-color: rgba(22, 35, 63, 0.12);
  box-shadow: var(--bsk-shadow-1);
}
.bsk-iconbtn:active { transform: scale(0.92) rotate(20deg); }

/* ---------- screen scaffold ---------- */
.bsk-screen {
  flex: 1;
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  padding: 4px 14px 28px;
}

.bsk-panel-card {
  background: var(--bsk-panel);
  color: var(--bsk-ink);
  border-radius: var(--bsk-radius);
  box-shadow: var(--bsk-shadow-1);
  padding: 16px;
}

.bsk-section-title {
  font-size: 14px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--bsk-on-bg-soft);
  margin: 18px 4px 10px;
}

/* ---------- buttons ---------- */
.bsk-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: var(--bsk-touch);
  padding: 12px 26px;
  border-radius: var(--bsk-radius);
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.01em;
  background: var(--bsk-accent);
  color: var(--bsk-accent-ink);
  box-shadow: 0 4px 0 rgba(0, 0, 0, 0.22), var(--bsk-shadow-1);
  transition: transform 0.12s ease, box-shadow 0.12s ease, filter 0.12s ease;
  user-select: none;
  -webkit-user-select: none;
}
.bsk-btn:active {
  transform: translateY(3px) scale(0.99);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.22);
}
.bsk-btn:disabled { opacity: 0.45; pointer-events: none; }

.bsk-btn-gold {
  background: linear-gradient(180deg, var(--bsk-gold), var(--bsk-gold-deep));
  color: #3A2A00;
}
.bsk-btn-secondary {
  background: var(--bsk-panel);
  color: var(--bsk-ink);
  border: 2px solid rgba(0, 0, 0, 0.08);
}
.bsk-btn-ghost {
  background: rgba(255, 255, 255, 0.12);
  color: var(--bsk-on-bg);
  border: 1.5px solid rgba(255, 255, 255, 0.2);
  box-shadow: none;
}
[data-theme="bluestar"] .bsk-btn-ghost {
  background: rgba(22, 35, 63, 0.06);
  border-color: rgba(22, 35, 63, 0.14);
  color: var(--bsk-ink);
}
.bsk-btn-danger { background: var(--bsk-bad); color: #fff; }
.bsk-btn-small { min-height: 44px; font-size: 16px; padding: 8px 18px; border-radius: 16px; }
.bsk-btn-block { width: 100%; }

/* ---------- XP bar ---------- */
.xp-bar { margin: 2px 0 4px; }
.xp-bar-track {
  height: 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.14);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
}
[data-theme="bluestar"] .xp-bar-track {
  background: rgba(22, 35, 63, 0.1);
  border-color: rgba(22, 35, 63, 0.08);
}
.xp-bar-fill {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--bsk-gold-deep), var(--bsk-gold) 60%, #FFDD66);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.4);
  transition: width 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}
.xp-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  font-weight: 700;
  color: var(--bsk-on-bg-soft);
  margin-top: 5px;
  padding: 0 2px;
}

/* ---------- home: hero card ---------- */
.hero-card {
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
  background: linear-gradient(135deg, var(--bsk-accent), #1D4FB8);
  color: #fff;
  border-radius: var(--bsk-radius-lg);
  box-shadow: var(--bsk-shadow-2);
  padding: 18px;
  margin-top: 8px;
  overflow: hidden;
}
.hero-card::after {
  content: "";
  position: absolute;
  right: -30px;
  top: -30px;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
}
.hero-emoji { font-size: 44px; line-height: 1; filter: drop-shadow(0 3px 4px rgba(0,0,0,0.3)); }
.hero-body { flex: 1; min-width: 0; }
.hero-kicker {
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  opacity: 0.85;
}
.hero-title {
  font-size: 22px;
  font-weight: 800;
  margin-top: 2px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.hero-card .bsk-btn { flex-shrink: 0; z-index: 1; }

/* ---------- home: stats row ---------- */
.stats-row {
  display: flex;
  gap: 12px;
  margin-top: 14px;
}
.stat-card {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bsk-panel);
  color: var(--bsk-ink);
  border-radius: var(--bsk-radius);
  box-shadow: var(--bsk-shadow-1);
  padding: 12px 14px;
  min-height: 76px;
}
.stat-big { font-size: 26px; font-weight: 800; line-height: 1.05; }
.stat-label { font-size: 13px; font-weight: 700; color: var(--bsk-ink-soft); }
.stat-flame { font-size: 30px; }
.stat-flame.cold { filter: grayscale(1); opacity: 0.5; }

.goal-ring { width: 54px; height: 54px; flex-shrink: 0; }
.goal-ring .ring-track { stroke: rgba(0, 0, 0, 0.1); }
.goal-ring .ring-fill {
  stroke: var(--bsk-good);
  transition: stroke-dashoffset 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}
.goal-ring .ring-done { stroke: var(--bsk-gold); }
.goal-ring text {
  font-family: var(--bsk-font);
  font-size: 15px;
  font-weight: 800;
  fill: var(--bsk-ink);
}

/* ---------- home: journey / islands ---------- */
.journey { margin-top: 6px; }

.island-card {
  background: var(--bsk-panel);
  color: var(--bsk-ink);
  border-radius: var(--bsk-radius-lg);
  box-shadow: var(--bsk-shadow-1);
  padding: 16px;
  position: relative;
}
.island-head {
  display: flex;
  align-items: center;
  gap: 12px;
}
.island-badge {
  width: 52px;
  height: 52px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  border-radius: 16px;
  background: var(--bsk-accent-soft);
}
.island-title { font-size: 20px; font-weight: 800; }
.island-sub { font-size: 14px; color: var(--bsk-ink-soft); font-weight: 600; margin-top: 1px; }
.island-progress { margin-left: auto; font-size: 14px; font-weight: 800; color: var(--bsk-ink-soft); white-space: nowrap; }

.island-card.locked { opacity: 0.92; }
.island-card.locked .island-head { filter: grayscale(0.7); opacity: 0.6; }
.island-lock {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
  padding: 12px 14px;
  border-radius: var(--bsk-radius-sm);
  background: var(--bsk-panel2);
  font-weight: 700;
  font-size: 15px;
  color: var(--bsk-ink-soft);
}
.island-lock .lock-emoji { font-size: 22px; }

/* wavy dashed path between islands */
.island-path {
  height: 44px;
  display: flex;
  justify-content: center;
  align-items: center;
}
.island-path svg { width: 120px; height: 40px; overflow: visible; }
.island-path .wave {
  fill: none;
  stroke: var(--bsk-on-bg-soft);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-dasharray: 1 14;
  opacity: 0.8;
}

/* song / exercise rows */
.song-list { margin-top: 10px; display: flex; flex-direction: column; gap: 8px; }
.song-row {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-height: var(--bsk-touch);
  padding: 10px 14px;
  border-radius: var(--bsk-radius-sm);
  background: var(--bsk-panel2);
  text-align: left;
  font-size: 17px;
  font-weight: 700;
  color: var(--bsk-ink);
  transition: transform 0.12s ease, background 0.12s ease;
}
.song-row:active { transform: scale(0.985); }
.song-row .row-emoji { font-size: 22px; width: 30px; text-align: center; flex-shrink: 0; }
.song-row .row-title { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.song-row .row-go { font-size: 18px; color: var(--bsk-accent); font-weight: 800; }

/* star ratings */
.stars { display: inline-flex; gap: 2px; font-size: 17px; }
.stars .star { color: rgba(0, 0, 0, 0.18); }
.stars .star.filled { color: var(--bsk-gold); text-shadow: 0 1px 1px rgba(0,0,0,0.15); }

/* ---------- play screen ---------- */
.play-screen {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 4px 10px 10px;
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
  min-height: 0;
}

.play-top {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  padding: 2px 2px 8px;
}
.play-title {
  font-size: 18px;
  font-weight: 800;
  color: var(--bsk-on-bg);
  flex: 1;
  min-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chip-group { display: flex; gap: 6px; }
.mode-chip {
  min-height: 44px;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 800;
  background: rgba(255, 255, 255, 0.1);
  color: var(--bsk-on-bg);
  border: 2px solid rgba(255, 255, 255, 0.18);
  transition: transform 0.12s ease, background 0.15s ease;
}
[data-theme="bluestar"] .mode-chip {
  background: rgba(22, 35, 63, 0.05);
  border-color: rgba(22, 35, 63, 0.14);
  color: var(--bsk-ink);
}
.mode-chip:active { transform: scale(0.95); }
.mode-chip.active {
  background: var(--bsk-accent);
  border-color: var(--bsk-accent);
  color: #fff;
  box-shadow: var(--bsk-shadow-1);
}
.mode-chip:disabled { opacity: 0.35; pointer-events: none; }

.staff-wrap {
  position: relative;
  flex: 1;
  min-height: 160px;
  background: var(--bsk-panel);
  border-radius: var(--bsk-radius);
  box-shadow: var(--bsk-shadow-1);
  overflow: hidden;
}
.staff-wrap canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.keyboard-wrap {
  margin-top: 10px;
  height: clamp(120px, 24dvh, 220px);
  border-radius: var(--bsk-radius);
  overflow: hidden;
  background: rgba(0, 0, 0, 0.18);
  box-shadow: var(--bsk-shadow-1);
  padding: 6px;
}
[data-theme="bluestar"] .keyboard-wrap { background: rgba(22, 35, 63, 0.08); }
.keyboard-wrap.feedback-only { pointer-events: none; opacity: 0.95; }

/* landscape tablet: staff and keyboard share the screen comfortably */
@media (orientation: landscape) and (min-width: 700px) {
  .play-screen { padding-bottom: 6px; }
  .staff-wrap { flex: 0 0 auto; height: 55vh; min-height: 220px; }
  .keyboard-wrap { height: 30vh; min-height: 140px; }
}

/* ---------- on-screen keyboard (rendered by js/ui/keyboard.js) ---------- */
.bsk-keyboard {
  position: relative;
  display: flex;
  width: 100%;
  height: 100%;
  gap: 3px;
}
.bsk-key {
  position: relative;
  flex: 1;
  min-width: 30px;
  border-radius: 0 0 10px 10px;
  background: linear-gradient(180deg, #FFFFFF 0%, #F2EFE6 100%);
  border: 1px solid rgba(0, 0, 0, 0.22);
  box-shadow: inset 0 -6px 0 rgba(0, 0, 0, 0.08);
  color: #5A5A66;
  font-weight: 800;
  font-size: 15px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 8px;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
  transition: background 0.08s ease, transform 0.08s ease;
}
.bsk-key:active, .bsk-key.down, .bsk-key.pressed {
  background: linear-gradient(180deg, #EDEBFF 0%, #DCD9F5 100%);
  transform: translateY(1px);
}
.bsk-key-black {
  position: absolute;
  top: 0;
  z-index: 2;
  height: 60%;
  border-radius: 0 0 8px 8px;
  background: linear-gradient(180deg, #2A2A33 0%, #14141B 100%);
  border: 1px solid #000;
  box-shadow: 0 3px 5px rgba(0, 0, 0, 0.4), inset 0 -5px 0 rgba(255, 255, 255, 0.06);
  color: #E8E8F0;
  font-size: 12px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 6px;
}
.bsk-key-black:active, .bsk-key-black.down, .bsk-key-black.pressed {
  background: linear-gradient(180deg, #3A3A55 0%, #23233A 100%);
}

/* key feedback states */
.bsk-key.hint, .bsk-key-black.hint {
  animation: bskHintPulse 1.1s ease-in-out infinite;
}
@keyframes bskHintPulse {
  0%, 100% { box-shadow: inset 0 -6px 0 rgba(0,0,0,0.08), 0 0 0 0 rgba(46, 111, 232, 0.0); background-color: #DCE8FF; }
  50% { box-shadow: inset 0 -6px 0 rgba(0,0,0,0.08), 0 0 16px 4px rgba(46, 111, 232, 0.65); background-color: #B9D2FF; }
}
.bsk-key.hint { background: linear-gradient(180deg, #DCE8FF, #B9D2FF); }
.bsk-key-black.hint { background: linear-gradient(180deg, #3D5FA8, #27407A); }

.bsk-key.good, .bsk-key-black.good {
  background: linear-gradient(180deg, #7BE3A4, #3DBE72) !important;
  color: #0B3A20;
  animation: bskGoodFlash 0.35s ease;
}
@keyframes bskGoodFlash {
  0% { transform: translateY(2px) scale(0.98); box-shadow: 0 0 0 0 rgba(39, 162, 91, 0.7); }
  100% { transform: translateY(0) scale(1); box-shadow: 0 0 18px 6px rgba(39, 162, 91, 0); }
}
.bsk-key.bad, .bsk-key-black.bad {
  background: linear-gradient(180deg, #F6B0A8, #EE8A80) !important;
  color: #58150E;
  animation: bskBadShake 0.3s ease;
}
@keyframes bskBadShake {
  0%, 100% { transform: translateX(0); }
  30% { transform: translateX(-3px); }
  60% { transform: translateX(3px); }
}

/* ---------- count-in overlay ---------- */
.count-overlay {
  position: absolute;
  inset: 0;
  z-index: 20;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: rgba(11, 30, 58, 0.55);
  border-radius: inherit;
  backdrop-filter: blur(2px);
}
.count-num {
  font-size: 96px;
  font-weight: 800;
  color: #fff;
  text-shadow: 0 4px 14px rgba(0, 0, 0, 0.5);
  animation: bskCountPop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.count-sub { color: rgba(255,255,255,0.85); font-size: 17px; font-weight: 700; }
@keyframes bskCountPop {
  0% { transform: scale(0.3); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

/* pause overlay */
.pause-overlay {
  position: absolute;
  inset: 0;
  z-index: 22;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  background: rgba(11, 30, 58, 0.62);
  border-radius: inherit;
  backdrop-filter: blur(3px);
}
.pause-overlay h2 { color: #fff; font-size: 26px; }

/* ---------- error banner ---------- */
.banner-error {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin: 8px 0;
  padding: 12px 14px;
  border-radius: var(--bsk-radius-sm);
  background: var(--bsk-bad-soft);
  border: 2px solid var(--bsk-bad);
  color: var(--bsk-on-bg);
  font-weight: 700;
  font-size: 15px;
}
[data-theme="bluestar"] .banner-error { color: var(--bsk-ink); }
.banner-error .bsk-btn { min-height: 44px; font-size: 15px; padding: 8px 16px; }

/* ---------- modal (results / celebration) ---------- */
.bsk-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  background: rgba(5, 14, 30, 0.6);
  backdrop-filter: blur(3px);
  animation: bskFadeIn 0.25s ease;
}
@keyframes bskFadeIn { from { opacity: 0; } to { opacity: 1; } }

.bsk-modal {
  position: relative;
  width: 100%;
  max-width: 440px;
  max-height: 90dvh;
  overflow-y: auto;
  background: var(--bsk-panel);
  color: var(--bsk-ink);
  border-radius: var(--bsk-radius-lg);
  box-shadow: var(--bsk-shadow-2);
  padding: 26px 22px;
  text-align: center;
  animation: bskModalIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes bskModalIn {
  0% { transform: translateY(40px) scale(0.9); opacity: 0; }
  100% { transform: translateY(0) scale(1); opacity: 1; }
}

.results-title { font-size: 26px; font-weight: 800; }
.results-sub { font-size: 16px; font-weight: 700; color: var(--bsk-ink-soft); margin-top: 4px; }

.results-stars {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin: 18px 0 8px;
  font-size: 52px;
  line-height: 1;
}
.results-stars .rstar {
  color: rgba(0, 0, 0, 0.14);
  transform: scale(0);
  animation: bskStarPop 0.5s cubic-bezier(0.34, 1.8, 0.64, 1) forwards;
}
.results-stars .rstar.filled {
  color: var(--bsk-gold);
  text-shadow: 0 2px 8px rgba(245, 179, 1, 0.55);
}
@keyframes bskStarPop {
  0% { transform: scale(0) rotate(-30deg); }
  100% { transform: scale(1) rotate(0deg); }
}

.results-nums {
  display: flex;
  justify-content: center;
  gap: 18px;
  margin: 10px 0 4px;
}
.results-num { text-align: center; }
.results-num b { display: block; font-size: 24px; font-weight: 800; }
.results-num span { font-size: 12px; font-weight: 700; color: var(--bsk-ink-soft); text-transform: uppercase; letter-spacing: 0.06em; }

.results-xp {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  padding: 10px 18px;
  border-radius: 999px;
  background: rgba(245, 179, 1, 0.18);
  border: 2px solid var(--bsk-gold);
  font-size: 18px;
  font-weight: 800;
  color: var(--bsk-gold-deep);
}

.modal-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 20px;
}

/* ---------- confetti ---------- */
.confetti-layer {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  border-radius: inherit;
}
.confetti-piece {
  position: absolute;
  top: -14px;
  left: var(--cx, 50%);
  width: var(--cw, 10px);
  height: var(--ch, 14px);
  background: var(--cc, var(--bsk-gold));
  border-radius: 3px;
  opacity: 0;
  animation: bskConfettiFall var(--cd, 2.4s) ease-in var(--cdel, 0s) forwards;
}
.confetti-piece.round { border-radius: 50%; }
@keyframes bskConfettiFall {
  0% { opacity: 1; transform: translate3d(0, 0, 0) rotate(0deg); }
  100% { opacity: 0.9; transform: translate3d(var(--cdx, 0px), 110vh, 0) rotate(var(--crot, 540deg)); }
}

/* ---------- exercise screen ---------- */
.exercise-screen {
  flex: 1;
  display: flex;
  flex-direction: column;
  max-width: 760px;
  width: 100%;
  margin: 0 auto;
  padding: 4px 12px 12px;
  min-height: 0;
}

.round-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  padding: 8px 0 12px;
}
.round-dots .dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.22);
  border: 2px solid rgba(255, 255, 255, 0.3);
  transition: transform 0.2s ease, background 0.2s ease;
}
[data-theme="bluestar"] .round-dots .dot {
  background: rgba(22, 35, 63, 0.12);
  border-color: rgba(22, 35, 63, 0.2);
}
.round-dots .dot.done { background: var(--bsk-good); border-color: var(--bsk-good); }
.round-dots .dot.now {
  background: var(--bsk-gold);
  border-color: var(--bsk-gold);
  transform: scale(1.3);
  animation: bskHintPulseDot 1.1s ease-in-out infinite;
}
@keyframes bskHintPulseDot {
  0%, 100% { box-shadow: 0 0 0 0 rgba(245, 179, 1, 0.5); }
  50% { box-shadow: 0 0 0 7px rgba(245, 179, 1, 0); }
}

.prompt-card {
  position: relative;
  background: var(--bsk-panel);
  color: var(--bsk-ink);
  border-radius: var(--bsk-radius-lg);
  box-shadow: var(--bsk-shadow-1);
  padding: 18px;
  text-align: center;
  flex: 1;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.prompt-card.shake { animation: bskBadShake 0.35s ease; }
.prompt-kicker {
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--bsk-ink-soft);
}
.prompt-letter {
  font-size: 96px;
  font-weight: 800;
  line-height: 1;
  color: var(--bsk-accent);
  text-shadow: 0 3px 0 rgba(0, 0, 0, 0.08);
}
.prompt-staff { width: min(320px, 80%); }
.prompt-staff .pstaff-line { stroke: var(--bsk-staff); stroke-width: 2; }
.prompt-staff .pstaff-note { fill: var(--bsk-note); }
.prompt-staff .pstaff-clef { fill: var(--bsk-ink); font-size: 64px; font-family: serif; }
.prompt-staff .pstaff-acc { fill: var(--bsk-ink); font-size: 26px; font-weight: 800; }
.prompt-feedback { min-height: 24px; font-size: 17px; font-weight: 800; }
.prompt-feedback.good { color: var(--bsk-good); }
.prompt-feedback.retry { color: var(--bsk-bad); }

@media (orientation: landscape) and (min-width: 700px) {
  .exercise-screen { max-width: 1100px; }
  .prompt-card { min-height: 150px; }
}

/* ---------- settings ---------- */
.settings-screen {
  max-width: 620px;
  width: 100%;
  margin: 0 auto;
  padding: 4px 14px 40px;
}

.settings-group {
  background: var(--bsk-panel);
  color: var(--bsk-ink);
  border-radius: var(--bsk-radius);
  box-shadow: var(--bsk-shadow-1);
  overflow: hidden;
  margin-bottom: 16px;
}
.settings-row {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 60px;
  padding: 12px 16px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.07);
}
.settings-row:last-child { border-bottom: none; }
.settings-row.column { flex-direction: column; align-items: stretch; gap: 10px; }
.settings-label { flex: 1; font-size: 17px; font-weight: 700; }
.settings-hint { font-size: 13px; color: var(--bsk-ink-soft); font-weight: 600; margin-top: 2px; }

/* segmented control */
.seg {
  display: flex;
  gap: 4px;
  background: var(--bsk-panel2);
  border-radius: 999px;
  padding: 4px;
}
.seg button {
  min-height: 48px;
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 800;
  color: var(--bsk-ink-soft);
  transition: background 0.15s ease, color 0.15s ease;
}
.seg button.active { background: var(--bsk-accent); color: #fff; box-shadow: var(--bsk-shadow-1); }
.seg button:disabled { opacity: 0.35; }

/* switch */
.bsk-switch {
  position: relative;
  width: 60px;
  height: 36px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.18);
  transition: background 0.2s ease;
  flex-shrink: 0;
}
.bsk-switch::after {
  content: "";
  position: absolute;
  top: 4px;
  left: 4px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.bsk-switch.on { background: var(--bsk-good); }
.bsk-switch.on::after { transform: translateX(24px); }

/* range sliders */
input[type="range"].bsk-range {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 36px;
  background: transparent;
}
input[type="range"].bsk-range::-webkit-slider-runnable-track {
  height: 12px;
  border-radius: 999px;
  background: var(--bsk-panel2);
  border: 1px solid rgba(0, 0, 0, 0.1);
}
input[type="range"].bsk-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 32px;
  height: 32px;
  margin-top: -11px;
  border-radius: 50%;
  background: var(--bsk-accent);
  border: 3px solid #fff;
  box-shadow: var(--bsk-shadow-1);
}
input[type="range"].bsk-range::-moz-range-track {
  height: 12px;
  border-radius: 999px;
  background: var(--bsk-panel2);
}
input[type="range"].bsk-range::-moz-range-thumb {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bsk-accent);
  border: 3px solid #fff;
  box-shadow: var(--bsk-shadow-1);
}
.range-value {
  min-width: 74px;
  text-align: right;
  font-size: 16px;
  font-weight: 800;
  color: var(--bsk-accent);
}

/* theme picker cards */
.theme-cards { display: flex; gap: 12px; }
.theme-card {
  flex: 1;
  border-radius: var(--bsk-radius);
  padding: 14px;
  text-align: center;
  border: 3px solid transparent;
  font-weight: 800;
  font-size: 16px;
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.theme-card:active { transform: scale(0.97); }
.theme-card.selected { border-color: var(--bsk-gold); box-shadow: var(--bsk-shadow-glow); }
.theme-card .theme-swatch {
  height: 44px;
  border-radius: var(--bsk-radius-sm);
  margin-bottom: 8px;
}
.theme-card-pirate { background: #0B1E3A; color: #F7F3E9; }
.theme-card-pirate .theme-swatch { background: linear-gradient(135deg, #123057 40%, #F5B301 40% 60%, #2E6FE8 60%); }
.theme-card-bluestar { background: #fff; color: #16233F; border: 3px solid rgba(22,35,63,0.12); }
.theme-card-bluestar.selected { border-color: var(--bsk-gold); }
.theme-card-bluestar .theme-swatch { background: linear-gradient(135deg, #EAF1FD 40%, #2E6FE8 40% 60%, #F5B301 60%); }

/* mic tuner */
.tuner {
  text-align: center;
  padding: 8px 0 4px;
}
.tuner-note {
  font-size: 76px;
  font-weight: 800;
  line-height: 1;
  color: var(--bsk-accent);
  min-height: 80px;
  transition: color 0.1s ease;
}
.tuner-note.silent { color: var(--bsk-ink-soft); opacity: 0.4; }
.tuner-freq { font-size: 15px; font-weight: 700; color: var(--bsk-ink-soft); margin-top: 4px; min-height: 20px; }
.tuner-level {
  height: 8px;
  border-radius: 999px;
  background: var(--bsk-panel2);
  margin-top: 12px;
  overflow: hidden;
}
.tuner-level-fill {
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: var(--bsk-good);
  transition: width 0.1s linear;
}

/* parent corner */
.hold-btn {
  position: relative;
  overflow: hidden;
  width: 100%;
  min-height: var(--bsk-touch);
  border-radius: var(--bsk-radius);
  background: var(--bsk-panel2);
  color: var(--bsk-ink-soft);
  font-size: 16px;
  font-weight: 800;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
}
.hold-btn .hold-fill {
  position: absolute;
  inset: 0;
  width: 0%;
  background: var(--bsk-accent-soft);
  transition: width 0.1s linear;
}
.hold-btn span { position: relative; z-index: 1; }

.practice-bars {
  display: flex;
  align-items: flex-end;
  gap: 5px;
  height: 110px;
  padding: 8px 2px 0;
}
.pbar {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  height: 100%;
}
.pbar .pbar-fill {
  width: 100%;
  min-height: 3px;
  border-radius: 6px 6px 2px 2px;
  background: var(--bsk-accent);
  opacity: 0.85;
}
.pbar.today .pbar-fill { background: var(--bsk-gold); opacity: 1; }
.pbar .pbar-day { font-size: 9px; font-weight: 700; color: var(--bsk-ink-soft); }

.stepper { display: flex; align-items: center; gap: 10px; }
.stepper button {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bsk-accent);
  color: #fff;
  font-size: 24px;
  font-weight: 800;
}
.stepper button:disabled { opacity: 0.3; }
.stepper .stepper-val { min-width: 84px; text-align: center; font-size: 18px; font-weight: 800; }

/* ---------- chest / celebration ---------- */
.chest-screen {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 14px;
  padding: 20px;
  position: relative;
  overflow: hidden;
}
.chest-title { font-size: 30px; font-weight: 800; color: var(--bsk-on-bg); text-shadow: 0 2px 6px rgba(0,0,0,0.3); }
[data-theme="bluestar"] .chest-title { text-shadow: none; }
.chest-sub { font-size: 17px; font-weight: 700; color: var(--bsk-on-bg-soft); }

.chest-stage {
  position: relative;
  width: 240px;
  height: 220px;
  margin: 6px 0;
  cursor: pointer;
}
.chest-glow {
  position: absolute;
  left: 50%;
  top: 52%;
  width: 40px;
  height: 40px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 226, 130, 0.95) 0%, rgba(245, 179, 1, 0.35) 55%, transparent 75%);
  opacity: 0;
  transition: opacity 0.4s ease, transform 0.6s ease;
  pointer-events: none;
}
.chest.open ~ .chest-glow, .chest-stage.open .chest-glow {
  opacity: 1;
  transform: translate(-50%, -50%) scale(7);
}
.chest {
  position: absolute;
  left: 50%;
  bottom: 20px;
  transform: translateX(-50%);
  width: 170px;
  height: 120px;
}
.chest-lid {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 52px;
  background: linear-gradient(180deg, #9C5B24, #7A431A);
  border: 3px solid #4E2A0E;
  border-radius: 60px 60px 8px 8px;
  transform-origin: 50% 100%;
  transition: transform 0.7s cubic-bezier(0.34, 1.4, 0.64, 1);
  z-index: 3;
}
.chest-lid::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -4px;
  transform: translateX(-50%);
  width: 26px;
  height: 20px;
  background: var(--bsk-gold);
  border: 2px solid #8a6400;
  border-radius: 6px;
}
.chest-stage.open .chest-lid { transform: rotateX(0deg) rotate(-38deg) translate(-26px, -34px); }
.chest-body {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 74px;
  background: linear-gradient(180deg, #8A4E1E, #63350F);
  border: 3px solid #4E2A0E;
  border-radius: 10px;
  z-index: 2;
}
.chest-body::before, .chest-lid::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 0;
  bottom: 0;
  width: 12px;
  background: rgba(245, 179, 1, 0.55);
  border-radius: 4px;
  box-shadow: 104px 0 0 rgba(245, 179, 1, 0.55);
}
.chest-stage.shut .chest { animation: bskChestWiggle 1.6s ease-in-out infinite; }
@keyframes bskChestWiggle {
  0%, 84%, 100% { transform: translateX(-50%) rotate(0deg); }
  88% { transform: translateX(-50%) rotate(-3deg); }
  92% { transform: translateX(-50%) rotate(3deg); }
  96% { transform: translateX(-50%) rotate(-2deg); }
}
.chest-coin {
  position: absolute;
  left: 50%;
  top: 46%;
  font-size: 26px;
  opacity: 0;
  z-index: 1;
  pointer-events: none;
}
.chest-stage.open .chest-coin {
  animation: bskCoinPop 1s cubic-bezier(0.22, 1, 0.36, 1) var(--coindel, 0s) forwards;
  z-index: 4;
}
@keyframes bskCoinPop {
  0% { opacity: 0; transform: translate(-50%, 0) scale(0.4); }
  25% { opacity: 1; }
  100% { opacity: 0; transform: translate(calc(-50% + var(--coinx, 0px)), -130px) scale(1.15) rotate(var(--coinrot, 200deg)); }
}

.chest-badge-card {
  background: var(--bsk-panel);
  color: var(--bsk-ink);
  border-radius: var(--bsk-radius-lg);
  box-shadow: var(--bsk-shadow-2);
  padding: 20px 28px;
  transform: scale(0);
  transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.chest-badge-card.show { transform: scale(1); }
.chest-badge-emoji { font-size: 54px; line-height: 1.1; }
.chest-badge-name { font-size: 20px; font-weight: 800; margin-top: 6px; }
.chest-badge-gold { font-size: 15px; font-weight: 800; color: var(--bsk-gold-deep); margin-top: 4px; }

/* ---------- welcome (first run) ---------- */
.welcome-overlay {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  background: linear-gradient(180deg, var(--bsk-bg) 0%, var(--bsk-bg2) 100%);
}
.welcome-card {
  width: 100%;
  max-width: 420px;
  background: var(--bsk-panel);
  color: var(--bsk-ink);
  border-radius: var(--bsk-radius-lg);
  box-shadow: var(--bsk-shadow-2);
  padding: 28px 22px;
  text-align: center;
  animation: bskModalIn 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.welcome-logo { width: 84px; height: 84px; margin-bottom: 8px; }
.welcome-title { font-size: 26px; font-weight: 800; }
.welcome-tagline { font-size: 16px; font-weight: 700; color: var(--bsk-ink-soft); margin-top: 4px; }
.welcome-steps-dots { display: flex; justify-content: center; gap: 6px; margin: 16px 0; }
.welcome-steps-dots .wdot {
  width: 10px; height: 10px; border-radius: 50%;
  background: rgba(0, 0, 0, 0.15);
}
.welcome-steps-dots .wdot.on { background: var(--bsk-accent); }
.welcome-label { font-size: 18px; font-weight: 800; margin: 12px 0 10px; }
.welcome-input {
  width: 100%;
  min-height: var(--bsk-touch);
  border-radius: var(--bsk-radius);
  border: 3px solid var(--bsk-accent);
  background: #fff;
  color: var(--bsk-ink);
  font-family: inherit;
  font-size: 20px;
  font-weight: 800;
  text-align: center;
  padding: 10px 14px;
  outline: none;
}
.welcome-input:focus { box-shadow: 0 0 0 4px var(--bsk-accent-soft); }
.welcome-choices { display: flex; flex-direction: column; gap: 10px; }
.welcome-choice {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: var(--bsk-touch);
  padding: 12px 16px;
  border-radius: var(--bsk-radius);
  background: var(--bsk-panel2);
  border: 3px solid transparent;
  font-size: 17px;
  font-weight: 800;
  color: var(--bsk-ink);
  text-align: left;
}
.welcome-choice .wc-emoji { font-size: 26px; }
.welcome-choice .wc-sub { display: block; font-size: 13px; font-weight: 600; color: var(--bsk-ink-soft); }
.welcome-choice.selected { border-color: var(--bsk-accent); background: var(--bsk-accent-soft); }
.welcome-choice:disabled { opacity: 0.4; }
.welcome-actions { margin-top: 18px; display: flex; flex-direction: column; gap: 10px; }

/* ---------- generic error screen ---------- */
.oops-card {
  margin: 10vh auto;
  max-width: 380px;
  background: var(--bsk-panel);
  color: var(--bsk-ink);
  border-radius: var(--bsk-radius-lg);
  box-shadow: var(--bsk-shadow-1);
  padding: 26px;
  text-align: center;
}
.oops-card .oops-emoji { font-size: 46px; }
.oops-card h2 { font-size: 22px; margin: 8px 0 4px; }
.oops-card p { color: var(--bsk-ink-soft); font-weight: 600; margin-bottom: 16px; }

/* ---------- small screens ---------- */
@media (max-width: 420px) {
  .bsk-title { display: none; }
  .hero-title { font-size: 19px; }
  .results-stars { font-size: 44px; }
  .stats-row { flex-direction: row; }
  .stat-big { font-size: 22px; }
}

/* respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}