/* ==========================================================================
   Tokens — iOS-style semantic colors, light + dark
   ========================================================================== */

:root {
  color-scheme: light dark;

  --bg: #f3efe4;
  --surface: #fffdf7;
  --surface-2: #f3efe4;
  --fill: rgba(31, 52, 92, 0.08);
  --fill-strong: rgba(31, 52, 92, 0.14);
  --label: #1b1f27;
  --label-2: rgba(38, 46, 62, 0.66);
  --label-3: rgba(38, 46, 62, 0.34);
  --separator: rgba(38, 46, 62, 0.16);

  --accent: #1f3b73;
  --accent-text: #ffffff;
  --accent-tint: rgba(31, 59, 115, 0.1);
  --green: #2f7a3a;
  --green-fill: rgba(47, 122, 58, 0.14);
  --red: #b3261e;
  --red-fill: rgba(179, 38, 30, 0.12);
  --orange: #b9852c;
  --gray-glyph: #8a8f99;
  --purple: #5e6b82;

  --material: rgba(253, 251, 245, 0.8);
  --material-edge: rgba(255, 255, 255, 0.6);
  --scrim: rgba(10, 18, 36, 0.34);
  --shadow-lg: 0 18px 50px rgba(20, 30, 55, 0.16), 0 2px 8px rgba(20, 30, 55, 0.06);
  --shadow-sm: 0 1px 2px rgba(20, 30, 55, 0.06);

  --np-base: #1a3263;

  --radius-sm: 10px;
  --radius: 14px;
  --radius-lg: 22px;
  --radius-xl: 28px;

  --gutter: 16px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  --safe-right: env(safe-area-inset-right, 0px);

  --ease-out: cubic-bezier(0.2, 0.8, 0.2, 1);
  --ease-in: cubic-bezier(0.8, 0.2, 0.8, 0.2);

  --font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI Variable Text", "Segoe UI", Roboto, sans-serif;
  --font-rounded: ui-rounded, "SF Pro Rounded", system-ui, -apple-system, "Segoe UI Variable Display", "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0c111c;
    --surface: #171e2c;
    --surface-2: #222b3c;
    --fill: rgba(140, 160, 200, 0.16);
    --fill-strong: rgba(140, 160, 200, 0.26);
    --label: #f4f0e6;
    --label-2: rgba(232, 228, 216, 0.64);
    --label-3: rgba(232, 228, 216, 0.3);
    --separator: rgba(120, 135, 165, 0.35);

    --accent: #8eaeea;
    --accent-text: #0c111c;
    --accent-tint: rgba(142, 174, 234, 0.16);
    --green: #5cc46d;
    --green-fill: rgba(92, 196, 109, 0.18);
    --red: #ff6b5e;
    --red-fill: rgba(255, 107, 94, 0.18);
    --orange: #e0ab50;
    --gray-glyph: #5f6675;
    --purple: #8592aa;

    --material: rgba(23, 30, 44, 0.8);
    --material-edge: rgba(255, 255, 255, 0.08);
    --scrim: rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 18px 50px rgba(0, 0, 0, 0.55);
    --shadow-sm: none;

    --np-base: #132650;
  }
}

:root[data-theme="dark"] {
  --bg: #0c111c;
  --surface: #171e2c;
  --surface-2: #222b3c;
  --fill: rgba(140, 160, 200, 0.16);
  --fill-strong: rgba(140, 160, 200, 0.26);
  --label: #f4f0e6;
  --label-2: rgba(232, 228, 216, 0.64);
  --label-3: rgba(232, 228, 216, 0.3);
  --separator: rgba(120, 135, 165, 0.35);
  --accent: #8eaeea;
  --accent-text: #0c111c;
  --accent-tint: rgba(142, 174, 234, 0.16);
  --green: #5cc46d;
  --green-fill: rgba(92, 196, 109, 0.18);
  --red: #ff6b5e;
  --red-fill: rgba(255, 107, 94, 0.18);
  --orange: #e0ab50;
  --gray-glyph: #5f6675;
  --purple: #8592aa;
  --material: rgba(23, 30, 44, 0.8);
  --material-edge: rgba(255, 255, 255, 0.08);
  --scrim: rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 18px 50px rgba(0, 0, 0, 0.55);
  --shadow-sm: none;
  --np-base: #132650;
}

/* ==========================================================================
   Base
   ========================================================================== */

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

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--label);
  font: 100%/1.4 var(--font);
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior: none;
  touch-action: manipulation;
  transition: background-color 0.4s ease;
}

button {
  font: inherit;
  color: inherit;
  -webkit-user-select: none;
  user-select: none;
}

svg { width: 1em; height: 1em; flex: none; }

[hidden] { display: none !important; }

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 55%, transparent);
  outline-offset: 2px;
}

/* ==========================================================================
   Type — tracking and leading change with size
   ========================================================================== */

.large-title {
  font-size: clamp(2rem, 8.5vw, 2.5rem);
  line-height: 1.08;
  letter-spacing: -0.025em;
  font-weight: 800;
  margin: 0 0 0.5rem;
  text-wrap: balance;
}

.title-2 {
  font-size: 1.5rem;
  line-height: 1.15;
  letter-spacing: -0.018em;
  font-weight: 700;
  margin: 0;
}

.title-3 {
  font-size: 1.25rem;
  line-height: 1.2;
  letter-spacing: -0.012em;
  font-weight: 700;
  margin: 0;
}

.eyebrow {
  margin: 0 0 0.375rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--accent);
}

.lede {
  margin: 0;
  font-size: 1.0625rem;
  line-height: 1.45;
  color: var(--label-2);
  text-wrap: pretty;
}

.footnote {
  margin: 0.625rem 0 0;
  min-height: 1.2em;
  font-size: 0.8125rem;
  letter-spacing: 0.005em;
  color: var(--label-2);
  text-align: center;
}

.section-label {
  margin: 0 0 0.5rem;
  padding: 0 0.25rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--label-2);
}

/* ==========================================================================
   Layout — screens stack and cross-fade; question screen never scrolls
   ========================================================================== */

#app {
  position: relative;
  height: 100vh;
  height: 100dvh;
  max-width: 520px;
  margin: 0 auto;
  overflow: hidden;
}

.screen {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  padding:
    calc(var(--safe-top) + 12px)
    calc(var(--safe-right) + var(--gutter))
    0
    calc(var(--safe-left) + var(--gutter));
  opacity: 0;
  visibility: hidden;
  transform: scale(0.985);
  transition:
    opacity 0.28s ease,
    transform 0.45s var(--ease-out),
    visibility 0s linear 0.28s;
}

.screen.is-active {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition:
    opacity 0.32s ease 0.06s,
    transform 0.5s var(--ease-out) 0.06s,
    visibility 0s;
}

.screen-scroll {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  margin: 0 calc(-1 * var(--gutter));
  padding: 0 var(--gutter) 24px;
  /* soft scroll edge where content passes under the dock */
  -webkit-mask-image: linear-gradient(to bottom, #000 calc(100% - 24px), transparent);
  mask-image: linear-gradient(to bottom, #000 calc(100% - 24px), transparent);
}

.screen-scroll.centered {
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
  gap: 0.75rem;
}

.dock {
  flex: none;
  padding: 12px 0 calc(var(--safe-bottom) + 16px);
}

/* ==========================================================================
   Buttons — feedback on press, not on release
   ========================================================================== */

.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  min-height: 50px;
  padding: 0 20px;
  border: 0;
  border-radius: var(--radius);
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.005em;
  cursor: pointer;
  transition: transform 0.12s var(--ease-out), opacity 0.2s ease, background-color 0.2s ease;
}

.btn:active { transform: scale(0.97); transition-duration: 0.06s; }

.btn-large { min-height: 54px; border-radius: 16px; }

.btn-filled {
  background: var(--accent);
  color: var(--accent-text);
}
.btn-filled:active { opacity: 0.85; }

.btn-plain {
  background: transparent;
  color: var(--accent);
}
.btn-plain:active { background: var(--fill); }

.btn-tinted-destructive {
  background: var(--red-fill);
  color: var(--red);
}

.btn:disabled,
.btn.is-disabled {
  opacity: 0.35;
  pointer-events: none;
}

.icon-btn {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-left: -8px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--label-2);
  font-size: 1.25rem;
  cursor: pointer;
  transition: transform 0.12s var(--ease-out), background-color 0.2s ease;
}
.icon-btn::before {
  content: "";
  position: absolute;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--fill);
  z-index: -1;
}
.icon-btn { position: relative; isolation: isolate; }
.icon-btn svg { font-size: 1rem; }
.icon-btn:active { transform: scale(0.9); }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  min-height: 34px;
  padding: 0 14px 0 11px;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
  color: #fff;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  transition: transform 0.12s var(--ease-out), background-color 0.2s ease;
  position: relative;
}
/* keep the visual chip compact but the hit target ≥ 44px */
.chip::after { content: ""; position: absolute; inset: -6px -2px; }
.chip:active { transform: scale(0.95); background: rgba(255, 255, 255, 0.28); }

/* ==========================================================================
   Start screen
   ========================================================================== */

.start {
  padding-top: clamp(16px, 7vh, 64px);
}

.artwork {
  display: grid;
  place-items: center;
  width: 112px;
  height: 112px;
  margin-bottom: 24px;
  border-radius: 26px;
  background:
    radial-gradient(120% 120% at 0% 0%, #4d74b8 0%, transparent 55%),
    radial-gradient(120% 120% at 100% 100%, #c99a4a 0%, transparent 60%),
    #1f3b73;
  box-shadow: 0 14px 34px rgba(31, 59, 115, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

.start .lede { margin-bottom: 28px; max-width: 30ch; }

.grouped {
  list-style: none;
  margin: 0;
  padding: 0;
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.rules li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  position: relative;
}
.rules li + li::before {
  content: "";
  position: absolute;
  top: 0;
  left: 60px;
  right: 0;
  height: 0.5px;
  background: var(--separator);
}
.rules strong {
  display: block;
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.rules span:not(.glyph) {
  display: block;
  font-size: 0.875rem;
  color: var(--label-2);
}

.glyph {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  color: #fff;
  font-size: 1.05rem;
  flex: none;
}
.glyph-indigo { background: #1f3b73; }
.glyph-orange { background: var(--orange); }
.glyph-gray { background: var(--purple); }
.glyph-teal { background: #4a7ba6; }

/* ==========================================================================
   Equalizer wave — transform-only, so it stays on the compositor
   ========================================================================== */

.wave {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  height: 40px;
}
.wave i {
  display: block;
  width: 5px;
  height: 100%;
  border-radius: 3px;
  background: currentColor;
  transform: scaleY(0.12);
  transform-origin: center;
  transition: transform 0.5s var(--ease-out);
}
.wave-lg { color: #fff; height: 48px; gap: 6px; }
.wave-lg i { width: 7px; animation: eq calc(var(--d, 1.1s) * 1.3) ease-in-out var(--delay, 0s) infinite; }

.now-playing[data-state="playing"] .wave i { animation: eq var(--d, 1.1s) ease-in-out var(--delay, 0s) infinite; }

.wave i:nth-child(1) { --d: 1.05s; --delay: -0.2s; }
.wave i:nth-child(2) { --d: 0.85s; --delay: -0.5s; }
.wave i:nth-child(3) { --d: 1.2s; --delay: -0.1s; }
.wave i:nth-child(4) { --d: 0.95s; --delay: -0.7s; }
.wave i:nth-child(5) { --d: 1.15s; --delay: -0.35s; }
.wave i:nth-child(6) { --d: 0.9s; --delay: -0.6s; }
.wave i:nth-child(7) { --d: 1.25s; --delay: -0.15s; }

@keyframes eq {
  0%, 100% { transform: scaleY(0.18); }
  30% { transform: scaleY(0.95); }
  60% { transform: scaleY(0.45); }
  80% { transform: scaleY(0.75); }
}

/* ==========================================================================
   Question screen
   ========================================================================== */

#screen-question { padding-bottom: 0; }

.nav {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 44px;
  margin-bottom: 12px;
  flex: none;
}

.progress {
  flex: 1;
  display: flex;
  gap: 4px;
  height: 6px;
}
.progress i {
  flex: 1;
  border-radius: 3px;
  background: var(--fill-strong);
  transition: background-color 0.3s ease, transform 0.3s var(--ease-out);
}
.progress i[data-state="current"] { background: var(--accent); }
.progress i[data-state="correct"] { background: var(--green); }
.progress i[data-state="wrong"] { background: var(--red); }
.progress i[data-state="skipped"] { background: var(--purple); }

.score {
  margin: 0;
  min-width: 56px;
  text-align: right;
  font-family: var(--font-rounded);
  font-size: 1.0625rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

/* --- Now Playing card */

.now-playing {
  position: relative;
  flex: 1 1 210px;
  min-height: 168px;
  max-height: 260px;
  margin-bottom: 20px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  color: #fff;
  background:
    radial-gradient(100% 140% at 0% 0%, rgba(77, 116, 184, 0.55), transparent 60%),
    radial-gradient(90% 120% at 100% 100%, rgba(201, 154, 74, 0.4), transparent 60%),
    var(--np-base);
  box-shadow: 0 10px 30px rgba(20, 38, 80, 0.22);
  isolation: isolate;
  transform: translateZ(0);
}

/* Album art, blurred far past legibility, tints the card like Now Playing does. */
.np-ambient {
  position: absolute;
  inset: -40px;
  z-index: 0;
  opacity: 0;
  filter: blur(36px) saturate(1.7);
  transform: scale(1.3);
  transition: opacity 1.2s ease;
  pointer-events: none;
}
.np-ambient img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.now-playing.has-artwork .np-ambient { opacity: 0.6; }
.now-playing.has-artwork[data-state="playing"] .np-ambient,
.now-playing.has-artwork[data-state="ended"] .np-ambient { opacity: 0.85; }

.np-sheen {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.05), rgba(0, 0, 0, 0.35));
  pointer-events: none;
}

.np-content {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 18px 20px;
  text-align: center;
}

.np-kicker {
  position: absolute;
  top: 14px;
  left: 18px;
  margin: 0;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.7);
}

.np-status {
  margin: 0;
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.005em;
  color: rgba(255, 255, 255, 0.92);
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.25);
}

.np-footer {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 34px;
}

.np-points {
  margin: 0;
  font-family: var(--font-rounded);
  font-size: 1.375rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
  transition: opacity 0.3s ease;
}
.np-points small {
  font-family: var(--font);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: rgba(255, 255, 255, 0.7);
}
.now-playing:not([data-state="playing"]):not([data-state="ended"]):not([data-state="buffering"]) .np-points {
  opacity: 0.55;
}
.now-playing.is-answered .np-points { display: none; }

.np-progress {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 10px;
  z-index: 2;
  height: 3px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.22);
  overflow: hidden;
}
.np-progress span {
  display: block;
  height: 100%;
  width: 100%;
  border-radius: inherit;
  background: rgba(255, 255, 255, 0.9);
  transform: scaleX(0);
  transform-origin: left;
}

/* Song reveal lifeline: title + artist take the wave's place, never the episode */
.np-reveal { max-width: 100%; animation: reveal-in 0.5s var(--ease-out) both; }
.np-reveal-title {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.2;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-shadow: 0 1px 10px rgba(0, 0, 0, 0.3);
}
.np-reveal-artist {
  margin: 2px 0 0;
  font-size: 0.9375rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.75);
}
.now-playing.is-revealed .wave { display: none; }

@keyframes reveal-in {
  from { opacity: 0; transform: translateY(6px) scale(0.97); filter: blur(6px); }
  to { opacity: 1; transform: none; filter: none; }
}

/* Blocked or paused: the whole card is the play button. */
.now-playing[data-state="blocked"],
.now-playing[data-state="paused"] { cursor: pointer; }
.now-playing[data-state="blocked"]:active,
.now-playing[data-state="paused"]:active { transform: scale(0.985); transition: transform 0.08s ease; }
.now-playing[data-state="blocked"] .np-status::before,
.now-playing[data-state="paused"] .np-status::before {
  content: "";
  display: block;
  width: 48px;
  height: 48px;
  margin: 0 auto 10px;
  border-radius: 50%;
  background:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M8 5.5v13l10.5-6.5z' fill='white'/%3E%3C/svg%3E") 55% 50% / 22px no-repeat,
    rgba(255, 255, 255, 0.22);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  animation: breathe 2.4s ease-in-out infinite;
}
.now-playing[data-state="blocked"] .wave,
.now-playing[data-state="paused"] .wave { display: none; }

@keyframes breathe {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.07); }
}

/* --- Options */

.options {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: none;
}

.option {
  position: relative;
  display: flex;
  align-items: stretch;
  min-height: 60px;
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  transition:
    transform 0.14s var(--ease-out),
    background-color 0.25s ease,
    opacity 0.3s ease,
    box-shadow 0.25s ease;
}
.option:has(.option-main:active) { transform: scale(0.98); transition-duration: 0.06s; }
.option:has(.option-main:active) { background: var(--surface-2); }

.option-main {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 4px 10px 16px;
  border: 0;
  background: transparent;
  text-align: left;
  cursor: pointer;
  border-radius: var(--radius) 0 0 var(--radius);
}

.option-text { flex: 1; min-width: 0; }

.option-code {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--label-2);
  font-variant-numeric: tabular-nums;
}

.option-title {
  display: block;
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.012em;
  line-height: 1.25;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.option-mark {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  color: #fff;
  font-size: 0.875rem;
  transform: scale(0.4);
  opacity: 0;
  transition: transform 0.4s cubic-bezier(0.3, 1.5, 0.5, 1), opacity 0.15s ease;
}

.option-info {
  flex: 0 0 52px;
  display: grid;
  place-items: center;
  border: 0;
  background: transparent;
  color: var(--accent);
  font-size: 1.375rem;
  cursor: pointer;
  border-radius: 0 var(--radius) var(--radius) 0;
  transition: transform 0.12s var(--ease-out), opacity 0.2s ease;
}
.option-info:active { transform: scale(0.88); }
.option-info[aria-expanded="true"] { color: var(--label); }

/* waiting for the clip to start: answers are visible but not yet live */
.options.is-waiting .option { opacity: 0.55; }
.options.is-waiting .option-main { pointer-events: none; }

.options.is-locked .option-main,
.options.is-locked .option-info { pointer-events: none; }
.options.is-locked .option-info { opacity: 0; }
.options.is-locked .option:not([data-result]) { opacity: 0.4; }

.option[data-result="correct"] { background: var(--green-fill); box-shadow: inset 0 0 0 1.5px var(--green); }
.option[data-result="wrong"] { background: var(--red-fill); box-shadow: inset 0 0 0 1.5px var(--red); }
.option[data-result] .option-mark { transform: scale(1); opacity: 1; }
.option[data-result="correct"] .option-mark { background: var(--green); }
.option[data-result="wrong"] .option-mark { background: var(--red); }
.option[data-result="wrong"] { animation: nudge 0.42s cubic-bezier(0.36, 0.07, 0.19, 0.97); }

@keyframes nudge {
  20% { transform: translateX(-5px); }
  45% { transform: translateX(4px); }
  70% { transform: translateX(-2px); }
  100% { transform: none; }
}

.question-footer {
  flex: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  padding: 6px 0 calc(var(--safe-bottom) + 8px);
}
.question-footer .btn { min-height: 48px; font-size: 1rem; }
.question-footer .btn svg { font-size: 1.05rem; }

/* ==========================================================================
   Popover — material that grows out of the ⓘ that opened it
   ========================================================================== */

.popover {
  position: fixed;
  z-index: 40;
  width: min(320px, calc(100vw - 32px));
  padding: 14px 16px 16px;
  border-radius: var(--radius);
  background: var(--material);
  -webkit-backdrop-filter: blur(30px) saturate(180%);
  backdrop-filter: blur(30px) saturate(180%);
  box-shadow: var(--shadow-lg), inset 0 0.5px 0 var(--material-edge);
  opacity: 0;
  transform: scale(0.6);
  transition: opacity 0.18s ease, transform 0.22s var(--ease-in);
  pointer-events: none;
}
.popover.is-open {
  opacity: 1;
  transform: none;
  pointer-events: auto;
  transition: opacity 0.2s ease, transform 0.42s cubic-bezier(0.25, 1.1, 0.4, 1);
}

.popover-code {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--label-2);
}
.popover-title {
  margin: 1px 0 6px;
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: -0.012em;
}
.popover-text {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.42;
  font-weight: 450;
  color: var(--label);
  opacity: 0.88;
}

/* ==========================================================================
   Sheets
   ========================================================================== */

.sheet {
  position: fixed;
  inset: 0;
  z-index: 50;
}

.sheet-scrim {
  position: absolute;
  inset: 0;
  background: var(--scrim);
  opacity: 0;
}

.sheet-panel {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  max-width: 520px;
  margin: 0 auto;
  padding: 8px calc(var(--gutter) + 4px) calc(var(--safe-bottom) + 18px);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  background: var(--material);
  -webkit-backdrop-filter: blur(40px) saturate(180%);
  backdrop-filter: blur(40px) saturate(180%);
  box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.18), inset 0 0.5px 0 var(--material-edge);
  text-align: center;
  touch-action: none;
  transform: translate3d(0, 110%, 0);
  will-change: transform;
  outline: none;
}
.sheet.is-dragging .sheet-panel { cursor: grabbing; }

.grabber {
  width: 36px;
  height: 5px;
  margin: 0 auto 18px;
  border-radius: 3px;
  background: var(--label-3);
}

.result-badge {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  margin: 0 auto 12px;
  border-radius: 50%;
  color: #fff;
  font-size: 1.875rem;
  background: var(--green);
}
.result-badge[data-outcome="wrong"] { background: var(--red); }
.result-badge[data-outcome="skipped"] { background: var(--purple); }

.sheet.is-open .result-badge { animation: pop 0.55s cubic-bezier(0.3, 1.45, 0.5, 1) 0.08s both; }

@keyframes pop {
  from { transform: scale(0.3); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.result-points {
  margin: 4px 0 0;
  min-height: 1.4em;
  font-family: var(--font-rounded);
  font-size: 1.125rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--green);
}
.result-points:empty { display: none; }

.reveal {
  margin: 18px 0 18px;
  border-radius: var(--radius);
  background: var(--fill);
  text-align: left;
}
.reveal-row {
  padding: 11px 16px 12px;
  position: relative;
}
.reveal-row + .reveal-row::before {
  content: "";
  position: absolute;
  top: 0;
  left: 16px;
  right: 0;
  height: 0.5px;
  background: var(--separator);
}
.reveal small {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--label-2);
}
.reveal-primary {
  margin: 2px 0 0;
  font-size: 1.0625rem;
  font-weight: 650;
  letter-spacing: -0.012em;
  line-height: 1.3;
}
.reveal-secondary {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--label-2);
}

.reveal-song-row {
  display: flex;
  align-items: center;
  gap: 12px;
}
.reveal-song-text { flex: 1; min-width: 0; }
.reveal-song-text .reveal-primary,
.reveal-song-text .reveal-secondary {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.reveal-artwork {
  flex: none;
  width: 52px;
  height: 52px;
  border-radius: 8px;
  object-fit: cover;
  background: var(--fill-strong);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.18);
}
.reveal-artwork:not([src]) { visibility: hidden; }

.apple-link {
  flex: none;
  display: grid;
  place-items: center;
  min-height: 44px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--fill-strong);
  color: var(--label);
  font-size: 0.6875rem;
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: 0.01em;
  text-align: center;
  text-decoration: none;
  transition: transform 0.12s var(--ease-out);
}
.apple-link:active { transform: scale(0.95); }
.apple-link[hidden] { display: none; }

.sheet-compact .title-3 { margin-top: 2px; }
.sheet-compact .lede { margin: 6px 0 20px; font-size: 0.9375rem; }
.sheet-compact .btn + .btn { margin-top: 6px; }

/* ==========================================================================
   Final screen
   ========================================================================== */

.final {
  padding-top: clamp(20px, 8vh, 72px);
  text-align: center;
}

.final-score {
  margin: 0;
  font-family: var(--font-rounded);
  font-size: clamp(4rem, 22vw, 5.5rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(135deg, #4d74b8, var(--accent) 45%, #c99a4a);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.final-rank {
  margin: 10px 0 28px;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--label-2);
  text-wrap: balance;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 28px;
}
.stat {
  padding: 14px 8px 12px;
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}
.stat span {
  display: block;
  font-family: var(--font-rounded);
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.stat small {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--label-2);
}
.stat-correct span { color: var(--green); }
.stat-wrong span { color: var(--red); }
.stat-skipped span { color: var(--purple); }

.final .section-label { text-align: left; }

.recap { text-align: left; }
.recap li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 16px;
  position: relative;
}
.recap li + li::before {
  content: "";
  position: absolute;
  top: 0;
  left: 52px;
  right: 0;
  height: 0.5px;
  background: var(--separator);
}
.recap-mark {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  color: #fff;
  font-size: 0.8125rem;
  flex: none;
}
.recap-mark[data-outcome="correct"] { background: var(--green); }
.recap-mark[data-outcome="wrong"] { background: var(--red); }
.recap-mark[data-outcome="skipped"] { background: var(--purple); }
.recap-text { flex: 1; min-width: 0; }
.recap-song {
  display: block;
  font-weight: 600;
  letter-spacing: -0.01em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.recap-episode {
  display: block;
  font-size: 0.875rem;
  color: var(--label-2);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.recap-points {
  font-family: var(--font-rounded);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--label-2);
}
.recap-points[data-scored] { color: var(--label); }

/* ==========================================================================
   Small phones: tighten so the question screen fits without scrolling
   ========================================================================== */

@media (max-height: 700px) {
  .now-playing { flex-basis: 170px; min-height: 150px; margin-bottom: 14px; }
  .option { min-height: 54px; }
  .option-main { padding-top: 7px; padding-bottom: 7px; }
  .nav { margin-bottom: 8px; }
  .wave { height: 32px; }
}

@media (min-height: 860px) {
  .option { min-height: 66px; }
}

/* ==========================================================================
   Accessibility preferences
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  .screen,
  .screen.is-active { transform: none; transition: opacity 0.2s ease, visibility 0s; }
  .wave i,
  .wave-lg i,
  .now-playing[data-state="playing"] .wave i { animation: none; }
  .now-playing[data-state="playing"] .wave i:nth-child(odd) { transform: scaleY(0.6); }
  .now-playing[data-state="playing"] .wave i:nth-child(even) { transform: scaleY(0.35); }
  .wave-lg i:nth-child(odd) { transform: scaleY(0.7); }
  .wave-lg i:nth-child(even) { transform: scaleY(0.4); }
  .option[data-result="wrong"],
  .np-reveal,
  .sheet.is-open .result-badge,
  .now-playing[data-state="blocked"] .np-status::before,
  .now-playing[data-state="paused"] .np-status::before,
  .now-playing[data-state="blocked"]:active,
  .now-playing[data-state="paused"]:active { animation: none; transform: none; }
  .popover, .popover.is-open { transform: none; transition: opacity 0.2s ease; }
  .option-mark { transition: opacity 0.2s ease; transform: none; }
  .btn:active, .option:has(.option-main:active), .icon-btn:active, .chip:active, .option-info:active { transform: none; }
}

@media (prefers-reduced-transparency: reduce) {
  :root { --material: var(--surface); }
  .popover, .sheet-panel, .chip { -webkit-backdrop-filter: none; backdrop-filter: none; }
  .chip { background: rgba(0, 0, 0, 0.45); }
}

@media (prefers-contrast: more) {
  :root { --separator: var(--label-2); }
  .option, .stat, .grouped { box-shadow: inset 0 0 0 1px var(--label-3); }
  .popover, .sheet-panel { background: var(--surface); box-shadow: 0 0 0 1px var(--label-2); }
}

/* ==========================================================================
   Share + toast
   ========================================================================== */

.dock-stack {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.dock-stack .btn svg { font-size: 1.15rem; }

.reveal-also {
  margin: 6px 0 0;
  font-size: 0.8125rem;
  color: var(--label-2);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(var(--safe-bottom) + 136px);
  z-index: 60;
  max-width: calc(100vw - 32px);
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--material);
  -webkit-backdrop-filter: blur(30px) saturate(180%);
  backdrop-filter: blur(30px) saturate(180%);
  box-shadow: var(--shadow-lg), inset 0 0.5px 0 var(--material-edge);
  font-size: 0.9375rem;
  font-weight: 600;
  white-space: nowrap;
  opacity: 0;
  transform: translate(-50%, 8px) scale(0.96);
  transition: opacity 0.25s ease, transform 0.35s var(--ease-out);
  pointer-events: none;
}
.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }

@media (prefers-reduced-motion: reduce) {
  .toast, .toast.is-visible { transform: translate(-50%, 0); transition: opacity 0.2s ease; }
}
@media (prefers-reduced-transparency: reduce) {
  .toast { -webkit-backdrop-filter: none; backdrop-filter: none; background: var(--surface); }
}