/* Image Color Quiz — "Color Studio".
   Neutral, gallery-like chrome so the idols' colors stay the loudest thing on screen. */
@font-face {
  font-family: "Quiz Sans";
  src: url("../assets/fonts/quiz-latin.woff2?v=2.3") format("woff2");
  font-weight: 100 900;
  font-display: swap;
  unicode-range: U+0000-024F, U+2000-206F, U+20A0-20CF;
}
@font-face {
  font-family: "Quiz Sans";
  src: url("../assets/fonts/quiz-korean.woff2?v=2.3") format("woff2");
  font-weight: 100 900;
  font-display: swap;
  unicode-range: U+1100-11FF, U+3130-318F, U+AC00-D7A3;
}
@font-face {
  font-family: "Quiz Sans";
  src: url("../assets/fonts/quiz-japanese.woff2?v=2.3") format("woff2");
  font-weight: 100 900;
  font-display: swap;
  unicode-range: U+3000-30FF, U+3400-4DBF, U+4E00-9FFF, U+FF00-FFEF;
}

/* ───────────────────────── Tokens ───────────────────────── */
:root {
  color-scheme: light;
  --font-ui: "Quiz Sans", "Noto Sans KR", "Noto Sans JP", "Segoe UI", system-ui, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Mono", "JetBrains Mono", Consolas, "Quiz Sans", monospace;

  --page-bg: #f4f3ef;
  --bg: var(--page-bg);
  --surface: #ffffff;
  --surface-2: #efede8;
  --surface-3: #e5e3dd;
  --ink: #111114;
  --ink-2: #3a3940;
  --muted: #74727b;
  --faint: #a7a5ad;
  --line: rgb(17 17 20 / 8%);
  --line-strong: rgb(17 17 20 / 15%);
  --chip-edge: rgb(17 17 20 / 10%);

  --primary: #111114;
  --primary-ink: #ffffff;
  --accent: #e5336a;
  --accent-soft: rgb(229 51 106 / 10%);
  --focus: #2f6bff;
  --positive: #0f9d63;
  --negative: #e0344f;
  --gold: #f0a400;

  --frame-bg: #e9e7e1;
  --frame-light: #f7f6f2;

  --tone-easy: #12a46a;
  --tone-normal: #2f6bff;
  --tone-hard: #f08a00;
  --tone-very-hard: #e0344f;

  --c-allstars: #f34f6d;
  --c-million: #f2b100;
  --c-cinderella: #2681c8;
  --c-shiny: #4fa9ea;
  --c-gakuen: #f39800;
  --c-sidem: #0fbe94;
  --spectrum: #f34f6d, #f39800, #ffc30b, #0fbe94, #2681c8, #7ac7ff, #ff7db7, #f34f6d;

  --shadow-sm: 0 1px 2px rgb(17 17 20 / 5%), 0 1px 1px rgb(17 17 20 / 3%);
  --shadow-md: 0 1px 2px rgb(17 17 20 / 4%), 0 10px 28px -10px rgb(17 17 20 / 16%);
  --shadow-lg: 0 2px 6px rgb(17 17 20 / 4%), 0 30px 70px -20px rgb(17 17 20 / 26%);
  --shadow: var(--shadow-lg);

  --radius-xs: 8px;
  --radius-sm: 12px;
  --radius: 16px;
  --radius-lg: 22px;
  --radius-xl: 30px;
  --gutter: clamp(16px, 4vw, 40px);

  --ease: cubic-bezier(.2, .8, .2, 1);
  --ease-spring: cubic-bezier(.34, 1.4, .64, 1);
  --fast: 150ms;
  --normal: 240ms;
}
html[data-theme="dark"] {
  color-scheme: dark;
  --page-bg: #0b0b0e;
  --surface: #151519;
  --surface-2: #1c1c21;
  --surface-3: #26262d;
  --ink: #f3f2f6;
  --ink-2: #cfcdd6;
  --muted: #8f8d99;
  --faint: #5d5b66;
  --line: rgb(255 255 255 / 7%);
  --line-strong: rgb(255 255 255 / 14%);
  --chip-edge: rgb(255 255 255 / 12%);

  --primary: #f3f2f6;
  --primary-ink: #0b0b0e;
  --accent: #ff6b9a;
  --accent-soft: rgb(255 107 154 / 14%);
  --focus: #7ea6ff;
  --positive: #3ccf8e;
  --negative: #ff5c74;
  --gold: #ffc23d;

  --frame-bg: #17171c;
  --frame-light: #24242b;

  --tone-easy: #3ccf8e;
  --tone-normal: #6f9bff;
  --tone-hard: #ffa53d;
  --tone-very-hard: #ff5c74;

  --c-million: #ffc30b;
  --c-cinderella: #4ea3e6;

  --shadow-sm: 0 1px 2px rgb(0 0 0 / 40%);
  --shadow-md: 0 1px 2px rgb(0 0 0 / 40%), 0 12px 30px -12px rgb(0 0 0 / 60%);
  --shadow-lg: 0 2px 6px rgb(0 0 0 / 40%), 0 30px 80px -20px rgb(0 0 0 / 70%);
}

/* ───────────────────────── Base ───────────────────────── */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; overflow-x: clip; }
body {
  margin: 0;
  min-width: 280px;
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: clip;
  background: var(--page-bg);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 450;
  line-height: 1.55;
  letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "palt" 1;
  transition: background-color var(--normal) ease, color var(--normal) ease;
}
body.is-modal-open { overflow: hidden; }
/* 창(시트)이 떠 있는 동안 뒤 화면 고정 · 빠르게 두 번 눌러도 확대되지 않게 */
html { scrollbar-gutter: stable; }
html.modal-lock, html.modal-lock body { overflow: hidden; overscroll-behavior: none; }
button, a, input, label, select { touch-action: manipulation; }
::selection { background: var(--accent-soft); color: var(--ink); }
html.is-theme-switching *, html.is-theme-switching *::before, html.is-theme-switching *::after { transition: none !important; }
button, input { font: inherit; letter-spacing: inherit; color: inherit; }
button, .choice-label { -webkit-tap-highlight-color: transparent; touch-action: manipulation; }
button { cursor: pointer; border: 0; background: none; padding: 0; user-select: none; }
button:disabled { cursor: default; }
button, .choice-label {
  transition: background-color var(--fast) ease, color var(--fast) ease, border-color var(--fast) ease,
    box-shadow var(--fast) ease, transform var(--normal) var(--ease), opacity var(--fast) ease;
}
button:focus-visible, a:focus-visible, input:focus-visible, .choice-label:has(input:focus-visible) {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}
img, svg { vertical-align: middle; }
p, h1, h2, h3, dl, dd { margin: 0; }
strong { font-weight: 700; }
code { font-family: var(--font-mono); }
[hidden] { display: none !important; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

.app {
  width: min(1280px, 100%);
  margin-inline: auto;
  padding: max(8px, env(safe-area-inset-top)) max(var(--gutter), env(safe-area-inset-right))
    max(32px, env(safe-area-inset-bottom)) max(var(--gutter), env(safe-area-inset-left));
}
.screen { display: none; min-width: 0; }
.screen.is-active { display: block; animation: screenEnter 420ms var(--ease) both; }

/* ───────────────────────── Shared chrome ───────────────────────── */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 76px;
  padding-block: 14px;
}
.brand-lockup { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand-mark {
  position: relative;
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: conic-gradient(from 200deg, var(--spectrum));
  -webkit-mask: radial-gradient(circle, transparent 0 35%, #000 37%);
  mask: radial-gradient(circle, transparent 0 35%, #000 37%);
  animation: spin 24s linear infinite;
}
.brand-text { display: grid; gap: 1px; line-height: 1.2; }
.brand-text-main { font-size: 13px; font-weight: 800; letter-spacing: .02em; }
.brand-text-sub { font-size: 10px; font-weight: 650; letter-spacing: .2em; color: var(--muted); }

.header-actions { display: flex; align-items: center; gap: 10px; }
.guide-entry {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 16px 0 13px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink);
  font-size: 13px;
  font-weight: 650;
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
}
.guide-entry::before {
  content: "";
  width: 16px;
  height: 16px;
  background: currentColor;
  --icon: url("../assets/icons/ui/book-open.svg");
}
.language-toggle {
  display: flex;
  align-items: center;
  gap: 2px;
  height: 40px;
  padding: 3px;
  border-radius: 999px;
  background: var(--surface-2);
  box-shadow: inset 0 0 0 1px var(--line);
}
.language-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 34px;
  min-width: 54px;
  padding: 0 10px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: .06em;
}
.language-button.is-selected { background: var(--surface); color: var(--ink); box-shadow: var(--shadow-sm); }
.language-flag {
  display: block;
  width: 18px;
  height: 13px;
  border-radius: 3px;
  overflow: hidden;
  background-size: cover;
  background-position: center;
  box-shadow: 0 0 0 1px var(--line);
}
.flag-kr { background-image: url("../assets/icons/flag-kr.svg"); }
.flag-jp { background-image: url("../assets/icons/flag-jp.svg"); }
.flag-en { background-image: url("../assets/icons/flag-en.svg"); }
.theme-toggle {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow-sm);
}
.theme-toggle::before {
  content: "";
  width: 17px;
  height: 17px;
  background: currentColor;
  --icon: url("../assets/icons/ui/sun.svg");
}
html[data-theme="dark"] .theme-toggle::before { --icon: url("../assets/icons/ui/moon.svg"); }

.back-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 16px 0 12px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink);
  font-size: 13px;
  font-weight: 650;
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
}
.back-button::before {
  content: "";
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
  background: currentColor;
  --icon: url("../assets/icons/ui/arrow-left.svg");
  transition: transform var(--normal) var(--ease);
}

.primary-button, .next-button, .save-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 56px;
  padding: 14px 24px;
  border-radius: var(--radius);
  background: var(--primary);
  color: var(--primary-ink);
  font-size: 16px;
  font-weight: 750;
  letter-spacing: -0.01em;
  line-height: 1.3;
  box-shadow: 0 1px 0 rgb(255 255 255 / 12%) inset, 0 10px 24px -10px rgb(17 17 20 / 55%);
}
html[data-theme="dark"] .primary-button,
html[data-theme="dark"] .next-button,
html[data-theme="dark"] .save-button { box-shadow: 0 10px 30px -12px rgb(255 255 255 / 25%); }
.primary-button::after, .next-button::after {
  content: "";
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  background: currentColor;
  --icon: url("../assets/icons/ui/arrow-right.svg");
  transition: transform var(--normal) var(--ease);
}
.primary-button:disabled, .save-button:disabled { opacity: .4; cursor: not-allowed; box-shadow: none; }
.ghost-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink-2);
  font-size: 13px;
  font-weight: 650;
}

/* Monochrome UI icons: each element names its glyph in --icon and paints it with background. */
.guide-entry::before,
.theme-toggle::before,
.back-button::before,
.primary-button::after, .next-button::after,
.series-grid .choice-label::before,
.custom-search-symbol,
.guide-copy::after,
.result-actions .save-button::before,
.wrong-note-share::before,
.wrong-note-expand::after,
.wrong-note-card::after,
.result-preview-close::before, .wrong-note-close::before,
.feedback-mark::before,
.report-answer-mark {
  -webkit-mask: var(--icon) center / contain no-repeat;
  mask: var(--icon) center / contain no-repeat;
}

/* Series identity badges keep the brands' own colors. */
.series-logo-badge {
  position: relative;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 40px;
  height: 34px;
  border-radius: 10px;
  overflow: hidden;
  isolation: isolate;
  background: var(--badge-wash);
  box-shadow: inset 0 0 0 1px rgb(255 255 255 / 28%), 0 1px 2px rgb(0 0 0 / 10%);
}
.series-icon-img { position: relative; display: block; width: 32px; height: 26px; object-fit: contain; }
.series-logo-badge.allstars { --badge-wash: linear-gradient(135deg, #ff8aa3, #f34f6d); }
.series-logo-badge.millionstars { --badge-wash: linear-gradient(135deg, #ffe27a, #ffc30b); }
.series-logo-badge.cinderella { --badge-wash: linear-gradient(135deg, #6cb9ee, #2681c8); }
.series-logo-badge.shinycolors { --badge-wash: linear-gradient(135deg, #ff8cc0, #7ac7ff); }
.series-logo-badge.gakuen { --badge-wash: linear-gradient(135deg, #ffc866, #f39800); }
.series-logo-badge.sidem { --badge-wash: linear-gradient(135deg, #6ceccf, #0fbe94); }
.series-logo-badge.all, .custom-mode-symbol { --badge-wash: conic-gradient(from 200deg, var(--spectrum)); }
.all-series-filter-mark { display: none; }

/* ───────────────────────── Start: hero ───────────────────────── */
.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 32px;
  padding: clamp(40px, 7vw, 88px) 0 clamp(28px, 4vw, 44px);
  isolation: isolate;
}
.hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: -40% -20% -10% 30%;
  background:
    radial-gradient(closest-side at 70% 40%, rgb(255 125 183 / 22%), transparent),
    radial-gradient(closest-side at 40% 60%, rgb(122 199 255 / 20%), transparent),
    radial-gradient(closest-side at 90% 80%, rgb(255 195 11 / 14%), transparent);
  filter: blur(20px);
  pointer-events: none;
}
html[data-theme="dark"] .hero::before { opacity: .32; }
/* keep-all suits Korean, but it would stop Japanese headings from wrapping at all. */
html:lang(ja) .hero-heading, html:lang(ja) #guideTitle, html:lang(ja) .caption strong { word-break: normal; line-break: strict; }
.hero-title { display: grid; gap: 18px; margin: 0; }
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: .22em;
}
.hero-eyebrow::before {
  content: "";
  width: 36px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--spectrum));
}
.hero-heading {
  font-size: clamp(32px, 8.6vw, 96px);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.045em;
  word-break: keep-all;
  text-wrap: balance;
}
.hero-stats {
  display: flex;
  align-items: stretch;
  padding-bottom: 10px;
}
.hero-stat { display: grid; gap: 4px; padding: 0 24px; min-width: 96px; }
.hero-stat + .hero-stat { border-left: 1px solid var(--line-strong); }
.hero-stat:last-child { padding-right: 0; }
.hero-stat dt { order: 2; color: var(--muted); font-size: 10px; font-weight: 750; letter-spacing: .2em; }
.hero-stat dd { font-size: 40px; font-weight: 800; line-height: 1; letter-spacing: -0.04em; font-variant-numeric: tabular-nums; }

/* A drifting row of real image colors, like paint chips on a gallery wall. */
.swatch-ribbon {
  position: relative;
  width: 100vw;
  margin-left: calc(50% - 50vw);
  overflow: hidden;
  padding-block: 6px 10px;
  -webkit-mask: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.swatch-ribbon-track {
  display: flex;
  gap: 12px;
  width: max-content;
  animation: marquee 110s linear infinite;
}
/* No :focus-within pause: focus returns to the chip after the dialog closes and would freeze the strip. */
.swatch-ribbon:hover .swatch-ribbon-track,
body.is-modal-open .swatch-ribbon-track { animation-play-state: paused; }
.ribbon-chip { text-align: left; color: var(--ink); cursor: pointer; transition: transform var(--normal) var(--ease), box-shadow var(--normal) var(--ease); }
.ribbon-chip:focus-visible { outline-offset: 2px; }
@media (hover: hover) and (pointer: fine) {
  .ribbon-chip:hover { transform: translateY(-4px); box-shadow: var(--shadow-md), inset 0 0 0 1px var(--line-strong); }
}
.ribbon-chip {
  display: grid;
  grid-template-rows: 64px auto;
  width: 132px;
  padding: 6px;
  border-radius: 16px;
  background: var(--surface);
  box-shadow: var(--shadow-sm), inset 0 0 0 1px var(--line);
}
.ribbon-chip-color { border-radius: 11px; box-shadow: inset 0 0 0 1px var(--chip-edge); }
.ribbon-chip-meta { display: grid; gap: 1px; padding: 8px 6px 4px; min-width: 0; }
.ribbon-chip-meta b { overflow: hidden; font-size: 12px; font-weight: 700; white-space: nowrap; text-overflow: ellipsis; }
.ribbon-chip-meta code { color: var(--muted); font-size: 10.5px; letter-spacing: .02em; }

/* ───────────────────────── Start: configurator ───────────────────────── */
.settings-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 400px);
  gap: 40px;
  align-items: start;
  margin-top: clamp(36px, 5vw, 64px);
}
.panel { min-width: 0; margin: 0; padding: 0; border: 0; }
.panel-title, .panel > legend {
  float: left;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 18px;
  padding: 0;
  color: var(--ink);
  font-size: 17px;
  font-weight: 750;
  letter-spacing: -0.02em;
  line-height: 1.3;
}
.panel-title::before, .panel > legend::before {
  display: grid;
  place-items: center;
  min-width: 30px;
  height: 22px;
  padding: 0 7px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0;
}
.series-panel > legend::before { content: "01"; }
.count-panel .panel-title::before { content: "02"; }
.difficulty-panel > legend::before { content: "03"; }
.panel > legend + *, .count-controls { clear: both; }
.choice-label { position: relative; display: block; min-width: 0; cursor: pointer; }
.choice-label input { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); border: 0; }

/* Series cards */
.series-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.series-grid .choice-label {
  --tone: var(--ink);
  display: grid;
  grid-template-rows: 1fr auto;
  align-content: space-between;
  gap: 16px;
  min-height: 148px;
  padding: 18px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow-sm), inset 0 0 0 1px var(--line);
  transition: box-shadow var(--normal) var(--ease), transform var(--normal) var(--ease), background-color var(--normal) ease;
}
.series-grid .choice-label[data-tone="allstars"] { --tone: var(--c-allstars); }
.series-grid .choice-label[data-tone="million"] { --tone: var(--c-million); }
.series-grid .choice-label[data-tone="cinderella"] { --tone: var(--c-cinderella); }
.series-grid .choice-label[data-tone="shiny"] { --tone: var(--c-shiny); }
.series-grid .choice-label[data-tone="gakuen"] { --tone: var(--c-gakuen); }
.series-grid .choice-label[data-tone="sidem"] { --tone: var(--c-sidem); }
.series-grid .series-card-all { grid-column: span 2; min-height: 148px; }
/* Selection indicator: a ring that fills in. */
.series-grid .choice-label::after {
  content: "";
  position: absolute;
  top: 16px;
  right: 16px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  box-shadow: inset 0 0 0 1.5px var(--line-strong);
  transition: background-color var(--fast) ease, box-shadow var(--fast) ease, transform var(--normal) var(--ease-spring);
}
.series-grid .choice-label::before {
  content: "";
  position: absolute;
  z-index: 1;
  top: 21px;
  right: 21px;
  width: 14px;
  height: 14px;
  background: var(--primary-ink);
  opacity: 0;
  transform: scale(.4);
  --icon: url("../assets/icons/ui/check.svg");
  transition: opacity var(--fast) ease, transform var(--normal) var(--ease-spring);
}
.series-grid .choice-label:has(input:checked) {
  background: color-mix(in srgb, var(--tone) 7%, var(--surface));
  box-shadow: 0 0 0 2px var(--tone), var(--shadow-md);
}
.series-grid .choice-label:has(input:checked)::after { background: var(--primary); box-shadow: none; transform: scale(1.04); }
.series-grid .choice-label:has(input:checked)::before { opacity: 1; transform: scale(1); }
.group-choice-main { display: grid; align-content: start; gap: 16px; min-width: 0; }
.group-choice-main strong {
  display: block;
  padding-right: 8px;
  font-size: 17px;
  font-weight: 750;
  letter-spacing: -0.02em;
  line-height: 1.3;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
.series-name-chunk { display: inline-block; white-space: nowrap; }
.series-grid .choice-label > span:last-child {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .02em;
  font-variant-numeric: tabular-nums;
}
.series-grid .series-logo-badge { width: 46px; height: 38px; border-radius: 12px; }
.series-grid .series-icon-img { width: 36px; height: 30px; }
.group-icons { display: inline-flex; align-items: center; }
.series-card-all .group-icons { padding-left: 2px; }
.series-card-all .series-logo-badge {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  margin-left: -10px;
  box-shadow: 0 0 0 3px var(--surface), 0 2px 6px rgb(0 0 0 / 12%);
}
.series-card-all .series-logo-badge:first-child { margin-left: 0; }
.series-card-all:has(input:checked) .series-logo-badge { box-shadow: 0 0 0 3px color-mix(in srgb, var(--ink) 7%, var(--surface)), 0 2px 6px rgb(0 0 0 / 12%); }
.series-card-all .series-icon-img { width: 30px; height: 24px; }
.custom-mode-symbol {
  display: block;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--badge-wash);
  -webkit-mask: radial-gradient(circle, transparent 0 9px, #000 10px 13px, transparent 14px 15px, #000 16px);
  mask: radial-gradient(circle, transparent 0 9px, #000 10px 13px, transparent 14px 15px, #000 16px);
}

/* Session column: count, difficulty and the start call. */
.session-panel {
  position: sticky;
  top: 20px;
  display: grid;
  gap: 30px;
  padding: 26px;
  border-radius: var(--radius-xl);
  background: var(--surface);
  box-shadow: var(--shadow-lg), inset 0 0 0 1px var(--line);
}
.count-controls { display: grid; gap: 12px; }
.count-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2px;
  padding: 4px;
  border-radius: 14px;
  background: var(--surface-2);
  box-shadow: inset 0 0 0 1px var(--line);
}
.count-preset {
  min-height: 40px;
  padding: 8px;
  border-radius: 10px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}
.count-preset.is-selected { background: var(--surface); color: var(--ink); box-shadow: var(--shadow-sm), inset 0 0 0 1px var(--line); }
html[data-theme="dark"] .count-preset.is-selected { background: var(--surface-3); }
.number-field {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 104px;
  align-items: center;
  gap: 12px;
}
.number-field label { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; color: var(--muted); font-size: 13px; font-weight: 600; }
.number-field input {
  width: 100%;
  min-width: 0;
  height: 44px;
  padding: 0 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
  text-align: right;
  font-variant-numeric: tabular-nums;
  outline: 0;
  transition: border-color var(--fast) ease, box-shadow var(--fast) ease;
}
.number-field input:focus { border-color: var(--focus); box-shadow: 0 0 0 3px color-mix(in srgb, var(--focus) 22%, transparent); }
.number-field.is-manual label { color: var(--ink); }
.number-field.is-manual label::after {
  content: attr(data-active-label);
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
}
.number-field.is-manual input { border-color: var(--ink); }

/* Difficulty rows with a signal-strength meter. */
.difficulty-grid { display: grid; gap: 8px; }
.difficulty-grid .choice-label {
  --level-tone: var(--tone-normal);
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  min-height: 60px;
  padding: 10px 14px;
  border-radius: var(--radius);
  background: var(--surface-2);
  box-shadow: inset 0 0 0 1px var(--line);
}
.difficulty-grid .choice-label[data-level="1"] { --level-tone: var(--tone-easy); }
.difficulty-grid .choice-label[data-level="3"] { --level-tone: var(--tone-hard); }
.difficulty-grid .choice-label[data-level="4"] { --level-tone: var(--tone-very-hard); }
.difficulty-grid .choice-label:has(input:checked) {
  background: var(--surface);
  box-shadow: 0 0 0 2px var(--level-tone), var(--shadow-md);
}
.difficulty-meter { display: flex; align-items: flex-end; gap: 3px; height: 18px; }
.difficulty-meter i { display: block; width: 4px; border-radius: 2px; background: var(--line-strong); }
.difficulty-meter i:nth-child(1) { height: 7px; }
.difficulty-meter i:nth-child(2) { height: 10px; }
.difficulty-meter i:nth-child(3) { height: 14px; }
.difficulty-meter i:nth-child(4) { height: 18px; }
.choice-label[data-level="1"] .difficulty-meter i:nth-child(-n+1),
.choice-label[data-level="2"] .difficulty-meter i:nth-child(-n+2),
.choice-label[data-level="3"] .difficulty-meter i:nth-child(-n+3),
.choice-label[data-level="4"] .difficulty-meter i:nth-child(-n+4) { background: var(--level-tone); }
.difficulty-copy { display: grid; gap: 1px; min-width: 0; }
.difficulty-grid .choice-label strong { font-size: 15px; font-weight: 750; letter-spacing: -0.01em; white-space: nowrap; }
.difficulty-description { color: var(--muted); font-size: 12px; line-height: 1.45; word-break: keep-all; }
.difficulty-spec { display: grid; justify-items: end; gap: 2px; line-height: 1.2; }
.difficulty-spec b { font-family: var(--font-mono); font-size: 13px; font-weight: 600; font-variant-numeric: tabular-nums; }
.difficulty-spec small { color: var(--muted); font-size: 9.5px; font-weight: 700; letter-spacing: .12em; }

.start-actions { display: grid; gap: 18px; padding-top: 24px; border-top: 1px solid var(--line); }
.pool-summary { display: grid; gap: 12px; min-width: 0; }
.pool-kicker { color: var(--muted); font-size: 11px; font-weight: 750; letter-spacing: .14em; text-transform: uppercase; }
.pool-series-list { display: flex; flex-wrap: wrap; gap: 6px; min-width: 0; }
.pool-series-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  height: 30px;
  padding: 0 10px 0 4px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--ink-2);
  font-size: 12px;
  font-weight: 650;
  line-height: 1.2;
}
.pool-series-item.is-empty { padding-inline: 12px; color: var(--muted); }
.pool-series-item .series-logo-badge { width: 22px; height: 22px; border-radius: 50%; }
.pool-series-item .series-icon-img { width: 17px; height: 14px; }
.pool-series-name { overflow-wrap: anywhere; }
.pool-meta-row { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 6px 12px; }
#poolTitle { font-size: 20px; font-weight: 800; letter-spacing: -0.03em; }
#poolMeta { color: var(--muted); font-size: 13px; font-weight: 600; font-variant-numeric: tabular-nums; }
.start-actions .primary-button { width: 100%; }

/* Custom pool picker */
.custom-panel {
  display: grid;
  gap: 14px;
  min-width: 0;
  margin-top: 16px;
  padding: 22px;
  border-radius: var(--radius-xl);
  background: var(--surface);
  box-shadow: var(--shadow-sm), inset 0 0 0 1px var(--line);
  contain: layout style;
  animation: rise 320ms var(--ease) both;
}
.custom-panel-head { display: flex; align-items: flex-start; justify-content: space-between; flex-wrap: wrap; gap: 8px 16px; }
.custom-copy { display: grid; gap: 3px; }
.custom-copy strong { font-size: 17px; font-weight: 750; letter-spacing: -0.02em; }
.custom-copy span { color: var(--muted); font-size: 13px; line-height: 1.5; }
.custom-selected-count {
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--primary);
  color: var(--primary-ink);
  font-size: 12px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.custom-toolbar { display: grid; grid-template-columns: auto minmax(200px, 1fr); align-items: center; gap: 12px; }
.custom-filter-row, .guide-filters {
  display: flex;
  align-items: center;
  gap: 2px;
  min-width: 0;
  padding: 4px;
  border-radius: 999px;
  background: var(--surface-2);
  box-shadow: inset 0 0 0 1px var(--line);
}
.custom-filter-chip {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 46px;
  height: 40px;
  border-radius: 999px;
}
.custom-filter-chip.is-selected { background: var(--surface); box-shadow: var(--shadow-sm), inset 0 0 0 1px var(--line); }
html[data-theme="dark"] .custom-filter-chip.is-selected { background: var(--surface-3); }
.custom-filter-icon { width: 30px; height: 26px; border-radius: 8px; filter: saturate(.85); opacity: .78; transition: opacity var(--fast) ease, filter var(--fast) ease, transform var(--normal) var(--ease); }
.custom-filter-chip.is-selected .custom-filter-icon { opacity: 1; filter: none; transform: scale(1.06); }
.custom-filter-icon.all { width: 24px; height: 24px; border-radius: 50%; }
.custom-filter-icon .series-icon-img { width: 25px; height: 21px; }
.custom-search-row {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  height: 48px;
  padding: 0 6px 0 16px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  transition: border-color var(--fast) ease, box-shadow var(--fast) ease;
}
.custom-search-row:focus-within { border-color: var(--focus); box-shadow: 0 0 0 3px color-mix(in srgb, var(--focus) 22%, transparent); }
.custom-search-symbol {
  width: 17px;
  height: 17px;
  flex: 0 0 auto;
  background: var(--muted);
  --icon: url("../assets/icons/ui/search.svg");
}
.custom-search-input {
  width: 100%;
  min-width: 0;
  height: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--ink);
  font-size: 16px;
  outline: 0 !important;
}
.custom-search-input::placeholder { color: var(--faint); font-size: 14px; opacity: 1; }
.custom-search-input::-webkit-search-cancel-button { display: none; }
.custom-search-clear {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--surface-2);
  color: var(--muted);
  font-size: 18px;
  line-height: 1;
}
.custom-action-row { display: flex; flex-wrap: wrap; gap: 8px; min-width: 0; }
.custom-action-button { min-height: 36px; padding: 6px 14px; border-radius: 999px; font-size: 12px; white-space: nowrap; }
.custom-action-button.is-danger { margin-left: auto; border-color: transparent; background: transparent; color: var(--negative); }
.custom-idol-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
  gap: 6px;
  align-items: start;
  min-width: 0;
  min-height: 160px;
  max-height: min(540px, 62dvh);
  margin-inline: -6px;
  padding: 6px;
  overflow-y: auto;
  overscroll-behavior: contain;
  contain: layout paint style;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
}
.custom-idol-card {
  display: grid;
  justify-items: center;
  align-content: start;
  grid-template-rows: 68px auto;
  gap: 8px;
  min-width: 0;
  min-height: 124px;
  padding: 10px 4px;
  border-radius: var(--radius);
  color: var(--ink-2);
  contain: layout paint style;
  content-visibility: auto;
  contain-intrinsic-size: 96px 124px;
}
.custom-idol-card.is-selected { color: var(--ink); background: var(--surface-2); }
.custom-idol-card:focus-visible { outline-offset: -2px; }
.custom-idol-avatar {
  position: relative;
  display: block;
  width: 68px;
  aspect-ratio: 1;
  border-radius: 50%;
  overflow: hidden;
  background: var(--surface-3);
  contain: paint;
  transition: transform var(--normal) var(--ease), box-shadow var(--fast) ease;
}
.custom-idol-avatar::after { content: ""; position: absolute; inset: 0; z-index: 4; border-radius: inherit; box-shadow: inset 0 0 0 1px var(--line); pointer-events: none; }
.custom-idol-avatar img { display: block; width: 100%; height: 100%; object-fit: cover; }
.custom-idol-card.is-selected .custom-idol-avatar { box-shadow: 0 0 0 2.5px var(--surface-2), 0 0 0 4.5px var(--ink); transform: scale(.94); }
.custom-idol-check {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgb(17 17 20 / 45%);
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  opacity: 0;
  transition: opacity var(--fast) ease;
}
.custom-idol-card.is-selected .custom-idol-check { opacity: 1; }
.custom-idol-name { font-size: 12px; font-weight: 600; line-height: 1.4; text-align: center; word-break: keep-all; overflow-wrap: anywhere; }
.custom-idol-grid.is-empty { grid-template-columns: 1fr; align-items: center; }
.custom-empty-state { padding: 40px 12px; color: var(--muted); text-align: center; font-size: 14px; }

/* Footer */
.source-note {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: clamp(56px, 8vw, 96px);
  padding-top: 28px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}
.source-title { color: var(--ink); font-weight: 750; letter-spacing: .04em; }
.source-group { display: inline-flex; align-items: baseline; flex-wrap: wrap; gap: 8px; }
.source-group strong { color: var(--ink-2); font-size: inherit; font-weight: 650; }
.source-links { display: inline-flex; flex-wrap: wrap; gap: 4px 12px; }
.source-note a { color: var(--muted); text-decoration: none; text-underline-offset: 3px; }
.source-note a:hover { color: var(--ink); text-decoration: underline; }
/* Link back to the IDOLM@STER hub, kept small at the very bottom */
.source-hub { flex-basis: 100%; font-size: 11px; opacity: .7; }

/* ───────────────────────── Quiz ───────────────────────── */
.quiz-shell { position: relative; width: min(1180px, 100%); margin-inline: auto; }
.quiz-nav {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 24px;
  min-height: 76px;
  padding-block: 14px;
}
.quiz-progress { display: grid; gap: 10px; min-width: 0; max-width: 560px; width: 100%; justify-self: center; }
.quiz-top { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; }
.stat { display: flex; align-items: baseline; gap: 8px; }
.stat span { color: var(--muted); font-size: 11px; font-weight: 700; letter-spacing: .08em; }
.stat strong { font-size: 15px; font-weight: 750; font-variant-numeric: tabular-nums; letter-spacing: -0.01em; }
.stat-progress strong { font-size: 15px; }
.progress-track { position: relative; height: 4px; overflow: hidden; border-radius: 999px; background: var(--surface-3); }
.progress-bar {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 420ms var(--ease);
}
.combo-badge {
  justify-self: end;
  display: inline-flex;
  align-items: center;
  height: 34px;
  padding: 0 14px;
  border-radius: 999px;
  border: 2px solid transparent;
  background: linear-gradient(#111114, #111114) padding-box, conic-gradient(from 200deg, var(--spectrum)) border-box;
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.combo-badge.is-popping { animation: comboPop 360ms var(--ease-spring); }

.stage {
  --answer-glow-fade-duration: 680ms;
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 440px);
  grid-template-areas: "image panel";
  align-items: center;
  gap: clamp(28px, 4vw, 56px);
  min-width: 0;
  padding-bottom: 24px;
}
.image-frame {
  grid-area: image;
  position: relative;
  justify-self: center;
  height: min(calc(100dvh - 180px), 780px);
  min-height: 420px;
  max-width: 100%;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-xl);
  background:
    radial-gradient(120% 70% at 50% 18%, var(--frame-light), transparent 70%),
    var(--frame-bg);
  box-shadow: inset 0 0 0 1px var(--line), inset 0 -140px 160px -90px color-mix(in srgb, var(--reveal-color, transparent) 70%, transparent);
  isolation: isolate;
  overflow: hidden;
  transition: box-shadow 600ms var(--ease);
}
/* Studio floor shadow */
.image-frame::before {
  content: "";
  position: absolute;
  z-index: -1;
  left: 18%;
  right: 18%;
  bottom: 4%;
  height: 7%;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgb(0 0 0 / 16%), transparent);
}
.image-frame img {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  padding: 5% 5% 0;
  object-fit: contain;
  object-position: 50% 100%;
  transition: opacity 260ms ease, transform 420ms var(--ease);
}
.image-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0;
  background: radial-gradient(60% 55% at 50% 55%, color-mix(in srgb, var(--image-answer-glow, transparent) 70%, transparent), transparent);
  transition: opacity 0ms linear;
}
.image-frame.is-answer-glow-on::after { opacity: 1; transition: opacity 18ms ease-out; }
.image-frame.is-answer-glow-fading::after { opacity: 0; transition: opacity var(--answer-glow-fade-duration) cubic-bezier(.22, .45, .3, 1); }
.image-frame.is-shaking { animation: shake 320ms ease; }
.image-frame.is-loading {
  background:
    linear-gradient(100deg, transparent 30%, color-mix(in srgb, var(--frame-light) 80%, transparent) 50%, transparent 70%) 0 0 / 220% 100%,
    var(--frame-bg);
  animation: shimmer 1.2s linear infinite;
}
.image-frame.is-loading img, .image-frame.is-missing img { opacity: 0; transform: translateY(6px); }
.image-fallback { position: absolute; inset: 0; display: none; place-items: center; padding: 24px; color: #fff; }
.image-frame.is-missing .image-fallback { display: grid; }
.fallback-name { font-size: 28px; font-weight: 800; letter-spacing: -0.03em; text-align: center; word-break: keep-all; text-shadow: 0 2px 12px rgb(0 0 0 / 25%); }

.stage-panel { grid-area: panel; display: grid; gap: 22px; align-content: center; min-width: 0; }
.caption { display: grid; gap: 6px; min-width: 0; }
.caption span { color: var(--muted); font-size: 13px; font-weight: 600; line-height: 1.5; word-break: keep-all; overflow-wrap: anywhere; }
.caption strong {
  font-size: clamp(28px, 3.2vw, 42px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.035em;
  word-break: keep-all;
  overflow-wrap: anywhere;
  text-wrap: balance;
}

.quiz-timer { --time-ratio: 1; display: grid; gap: 10px; }
.question-timer-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-width: 0; }
.quiz-difficulty-chip {
  --chip-tone: var(--tone-normal);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 30px;
  padding: 0 12px 0 10px;
  border-radius: 999px;
  background: var(--surface);
  box-shadow: inset 0 0 0 1px var(--line);
  color: var(--muted);
}
.quiz-difficulty-chip::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--chip-tone); box-shadow: 0 0 0 3px color-mix(in srgb, var(--chip-tone) 22%, transparent); }
.quiz-difficulty-chip[data-difficulty="easy"] { --chip-tone: var(--tone-easy); }
.quiz-difficulty-chip[data-difficulty="hard"] { --chip-tone: var(--tone-hard); }
.quiz-difficulty-chip[data-difficulty="very-hard"] { --chip-tone: var(--tone-very-hard); }
.quiz-difficulty-label { font-size: 11px; font-weight: 650; }
.quiz-difficulty-name { color: var(--ink); font-size: 12px; font-weight: 750; }
.question-time-left { display: inline-flex; align-items: baseline; gap: 8px; }
.question-time-left span { color: var(--muted); font-size: 12px; font-weight: 600; }
.question-time-left strong {
  min-width: 64px;
  text-align: right;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  transition: color var(--fast) ease;
}
.question-time-track { position: relative; height: 8px; border-radius: 999px; background: var(--surface-3); overflow: hidden; }
.question-time-remaining { position: absolute; inset: 0; border-radius: inherit; background: var(--ink); transform: scaleX(var(--time-ratio)); transform-origin: left; }
.is-urgent .question-time-left strong { color: var(--negative); animation: pulse 1s ease-in-out infinite; }
.is-urgent .question-time-remaining { background: var(--negative); }
.is-answered .question-time-track { opacity: .45; }

/* Color chips */
.swatches {
  --swatch-gap: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: var(--swatch-gap);
  min-width: 0;
  counter-reset: chip;
}
.color-choice {
  position: relative;
  flex: 0 0 calc((100% - 2 * var(--swatch-gap)) / 3);
  aspect-ratio: 1;
  min-width: 0;
  border-radius: var(--radius-lg);
  counter-increment: chip;
  box-shadow: inset 0 0 0 1px var(--chip-edge), 0 1px 2px rgb(0 0 0 / 6%), 0 10px 22px -14px rgb(0 0 0 / 35%);
  transition: transform 260ms var(--ease), box-shadow var(--normal) var(--ease), opacity 260ms ease, outline-color var(--fast) ease;
  outline: 3px solid transparent;
  outline-offset: 4px;
}
.color-choice::before {
  content: counter(chip);
  position: absolute;
  top: 10px;
  left: 10px;
  display: none;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 7px;
  background: rgb(255 255 255 / 78%);
  color: #111114;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity var(--fast) ease;
}
.color-choice::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  width: 40px;
  height: 40px;
  opacity: 0;
  transform: scale(.4);
  background: center / contain no-repeat;
  filter: drop-shadow(0 4px 10px rgb(0 0 0 / 25%));
  transition: opacity var(--fast) ease, transform 420ms var(--ease-spring);
}
.color-choice:active:not(:disabled) { transform: scale(.95); }
.color-choice.is-answer {
  outline-color: var(--ink);
  transform: scale(1.03);
}
.color-choice.is-answer::after {
  opacity: 1;
  transform: scale(1);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 40 40'%3E%3Ccircle cx='20' cy='20' r='19' fill='%23ffffff'/%3E%3Cpath d='M12.5 20.5l5 5 10-10.5' fill='none' stroke='%230f9d63' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}
.color-choice.is-wrong { outline-color: var(--negative); }
.color-choice.is-wrong::after {
  opacity: 1;
  transform: scale(1);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 40 40'%3E%3Ccircle cx='20' cy='20' r='19' fill='%23ffffff'/%3E%3Cpath d='M14 14l12 12M26 14L14 26' fill='none' stroke='%23e0344f' stroke-width='3.4' stroke-linecap='round'/%3E%3C/svg%3E");
}
/* Unpicked chips step back by size only; fading them would change the colors being compared. */
.swatches:has(.is-answer) .color-choice:not(.is-answer):not(.is-wrong) { transform: scale(.86); box-shadow: inset 0 0 0 1px var(--chip-edge); }

.answer-note {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 16px;
  min-width: 0;
  padding: 14px 16px;
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: inset 0 0 0 1px var(--line);
  animation: rise 320ms var(--ease) both;
}
.answer-note:empty { display: none; }
.answer-result { display: inline-flex; align-items: baseline; gap: 10px; font-size: 17px; font-weight: 800; letter-spacing: -0.02em; line-height: 1.3; }
.answer-result.is-correct { color: var(--positive); }
.answer-result.is-wrong { color: var(--negative); }
.answer-earned-points {
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  animation: scoreEarned 420ms var(--ease-spring) both;
}
.answer-note-lines { display: flex; flex-wrap: wrap; gap: 8px; }
.answer-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 30px;
  padding: 0 11px 0 6px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.mini-chip { display: inline-block; flex: 0 0 auto; width: 18px; height: 18px; border-radius: 50%; box-shadow: inset 0 0 0 1px var(--chip-edge); }
.next-button { width: 100%; animation: rise 320ms var(--ease) both; }

/* A stamp over the illustration for the verdict. */
.feedback {
  grid-area: image;
  align-self: start;
  justify-self: center;
  z-index: 3;
  display: none;
  margin-top: 24px;
  pointer-events: none;
}
.feedback.is-visible { display: block; animation: stamp 520ms var(--ease-spring) both; }
.feedback-mark {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 18px 0 12px;
  border-radius: 999px;
  color: #fff;
  font-size: 0;
  box-shadow: 0 10px 30px -8px rgb(0 0 0 / 35%);
}
.feedback-mark::before { content: ""; width: 18px; height: 18px; background: currentColor; }
.feedback-mark::after { font-size: 13px; font-weight: 800; letter-spacing: .16em; }
.feedback.is-correct .feedback-mark { background: var(--positive); }
.feedback.is-correct .feedback-mark::before { --icon: url("../assets/icons/ui/check.svg"); }
.feedback.is-correct .feedback-mark::after { content: "GREAT"; }
.feedback.is-wrong .feedback-mark { background: var(--negative); }
.feedback.is-wrong .feedback-mark::before { --icon: url("../assets/icons/ui/x.svg"); }
.feedback.is-wrong .feedback-mark::after { content: "MISS"; }

/* ───────────────────────── Guide ───────────────────────── */
.guide-heading { display: grid; gap: 14px; padding: clamp(32px, 6vw, 72px) 0 clamp(24px, 3vw, 36px); }
.guide-brand { display: inline-flex; align-items: center; gap: 12px; color: var(--muted); font-size: 12px; font-weight: 750; letter-spacing: .22em; }
.guide-brand::before { content: ""; width: 36px; height: 3px; border-radius: 3px; background: linear-gradient(90deg, var(--spectrum)); }
#guideTitle { font-size: clamp(38px, 6vw, 76px); font-weight: 800; line-height: 1.04; letter-spacing: -0.045em; word-break: keep-all; overflow-wrap: anywhere; }
#guideTitle:focus { outline: none; }
.guide-source { display: flex; align-items: baseline; gap: 8px; color: var(--muted); font-size: 13px; }
.guide-source a { color: var(--ink); font-weight: 650; text-underline-offset: 3px; }
.guide-toolbar {
  position: sticky;
  top: 12px;
  z-index: 20;
  display: grid;
  grid-template-columns: auto minmax(220px, 360px);
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 8px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  box-shadow: var(--shadow-md), inset 0 0 0 1px var(--line);
  -webkit-backdrop-filter: saturate(1.4) blur(14px);
  backdrop-filter: saturate(1.4) blur(14px);
}
.guide-toolbar .guide-filters { background: transparent; box-shadow: none; padding: 0; }
.guide-filters .custom-filter-chip { flex-shrink: 1; }
.guide-search { height: 44px; border-color: var(--line); background: var(--surface-2); }
.guide-section-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; margin: 36px 0 18px; }
.guide-section-heading h2 { font-size: 22px; font-weight: 800; letter-spacing: -0.03em; word-break: keep-all; }
#guideCount { color: var(--muted); font-family: var(--font-mono); font-size: 13px; white-space: nowrap; font-variant-numeric: tabular-nums; }
.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(232px, 1fr));
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.guide-card {
  display: grid;
  grid-template-areas: "color" "head" "copy";
  grid-template-rows: 116px auto auto;
  min-width: 0;
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm), inset 0 0 0 1px var(--line);
  overflow: hidden;
  content-visibility: auto;
  contain-intrinsic-size: auto 268px;
  transition: transform var(--normal) var(--ease), box-shadow var(--normal) var(--ease);
}
.guide-color { grid-area: color; min-width: 0; box-shadow: inset 0 -1px 0 var(--chip-edge); }
.guide-card-heading { position: relative; z-index: 1; grid-area: head; display: grid; justify-items: start; gap: 12px; min-width: 0; padding: 0 18px 14px; }
.guide-idol-open { width: 100%; color: var(--ink); text-align: left; border-radius: 0; }
.guide-avatar {
  display: grid;
  place-items: center;
  width: 60px;
  height: 60px;
  margin-top: -30px;
  flex: 0 0 auto;
  border-radius: 50%;
  overflow: hidden;
  background: var(--surface-3);
  box-shadow: 0 0 0 4px var(--surface), var(--shadow-sm);
  transition: transform var(--normal) var(--ease);
}
.guide-avatar img { display: block; width: 100%; height: 100%; object-fit: cover; }
.guide-avatar.is-missing::after { content: attr(data-initial); color: var(--muted); font-size: 20px; font-weight: 700; }
.guide-identity { display: grid; gap: 2px; min-width: 0; }
.guide-idol-name { display: block; font-size: 16px; font-weight: 750; letter-spacing: -0.02em; line-height: 1.35; word-break: keep-all; overflow-wrap: anywhere; transition: color var(--fast) ease; }
.guide-idol-meta { display: block; color: var(--muted); font-size: 12px; line-height: 1.5; word-break: keep-all; overflow-wrap: anywhere; }
.guide-card-series { display: block; margin-top: 4px; color: var(--faint); font-size: 10.5px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; word-break: keep-all; overflow-wrap: anywhere; }
.guide-copy {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 44px;
  max-width: 100%;
  color: var(--ink-2);
  user-select: text;
}
.guide-card > .guide-copy { grid-area: copy; width: 100%; padding: 0 18px; border-top: 1px solid var(--line); border-radius: 0; }
.guide-copy code { font-size: 13px; font-weight: 600; letter-spacing: .02em; font-variant-numeric: tabular-nums; }
.guide-copy::after {
  content: "";
  width: 15px;
  height: 15px;
  flex: 0 0 auto;
  background: var(--muted);
  --icon: url("../assets/icons/ui/copy.svg");
}
.guide-copy.is-copied { color: var(--positive); }
.guide-copy.is-copied::after { background: var(--positive); --icon: url("../assets/icons/ui/check.svg"); }
.guide-empty { padding: 96px 20px; color: var(--muted); text-align: center; font-size: 15px; }

/* ───────────────────────── Result ───────────────────────── */
#resultScreen {
  --report-paper: #ffffff;
  --report-ink: #121216;
  --report-muted: #77757e;
  --report-rule: #e3e1db;
  --report-accent: #e5336a;
  --report-wash: #f1efea;
}
html[data-theme="dark"] #resultScreen {
  --report-paper: #151519;
  --report-ink: #f3f2f6;
  --report-muted: #9a98a3;
  --report-rule: #2d2c33;
  --report-accent: #ff6b9a;
  --report-wash: #222128;
}
.result-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  grid-template-rows: auto 1fr;
  grid-template-areas: "report actions" "report notes";
  gap: 20px 36px;
  align-items: start;
  padding-block: 40px 40px;
}
.result-report {
  grid-area: report;
  position: relative;
  min-width: 0;
  padding: clamp(24px, 4vw, 48px);
  border-radius: var(--radius-xl);
  background: var(--report-paper);
  color: var(--report-ink);
  box-shadow: var(--shadow-lg), inset 0 0 0 1px var(--line);
  overflow: hidden;
  isolation: isolate;
}
.result-report::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 6px;
  background: linear-gradient(90deg, var(--spectrum));
}
.result-report::after {
  content: "";
  position: absolute;
  z-index: -1;
  top: -160px;
  right: -160px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: conic-gradient(from 200deg, var(--spectrum));
  filter: blur(80px);
  opacity: .14;
  pointer-events: none;
}
.report-header { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; padding-bottom: 22px; border-bottom: 1px solid var(--report-rule); }
.result-brand { display: block; margin-bottom: 6px; color: var(--report-muted); font-size: 11px; font-weight: 750; letter-spacing: .2em; }
#reportTitle { font-size: 24px; font-weight: 800; letter-spacing: -0.03em; line-height: 1.25; }
#reportDate { color: var(--report-muted); font-family: var(--font-mono); font-size: 13px; white-space: nowrap; font-variant-numeric: tabular-nums; }
.result-main { min-width: 0; padding: 32px 0 28px; }
.result-main .eyebrow { margin-bottom: 10px; color: var(--report-accent); font-size: 11px; font-weight: 800; letter-spacing: .22em; text-transform: uppercase; }
#resultMessage {
  font-size: clamp(26px, 3.4vw, 36px);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.2;
  word-break: keep-all;
  overflow-wrap: anywhere;
  text-wrap: balance;
}
#resultMessage.is-perfect {
  background: linear-gradient(90deg, #f34f6d, #f39800 30%, #2681c8 70%, #ff7db7);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.report-score-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 12px; }
.score-number { display: flex; align-items: baseline; gap: 10px; min-width: 0; line-height: .95; font-variant-numeric: tabular-nums; }
#scorePercent { font-size: clamp(76px, 11vw, 148px); font-weight: 800; letter-spacing: -0.06em; }
#scoreUnit { color: var(--report-muted); font-family: var(--font-mono); font-size: clamp(16px, 2vw, 24px); font-weight: 500; white-space: nowrap; }
.report-score-meta { margin-top: 14px; }
#scoreSummary { color: var(--report-muted); font-size: 15px; font-weight: 600; }
.report-seal {
  display: flex;
  flex: 0 0 auto;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 112px;
  height: 112px;
  border-radius: 50%;
  border: 3px solid transparent;
  background: radial-gradient(circle, var(--report-paper) 0 60%, transparent 61%) padding-box, var(--report-paper) padding-box, conic-gradient(from 200deg, var(--spectrum)) border-box;
  color: var(--report-ink);
  transform: rotate(-8deg);
  box-shadow: 0 0 0 6px var(--report-paper), 0 0 0 7px var(--report-rule);
}
.report-seal > span { font-size: 48px; font-weight: 800; line-height: 1; letter-spacing: -0.04em; }
.report-seal small { margin-top: 4px; font-size: 8px; font-weight: 800; letter-spacing: .16em; color: var(--report-muted); }
.result-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--report-rule);
  box-shadow: inset 0 0 0 1px var(--report-rule);
}
.result-stat { display: grid; align-content: start; gap: 6px; min-width: 0; }
.result-stats > .result-stat { padding: 16px 18px; background: var(--report-paper); }
.result-stat > span { color: var(--report-muted); font-size: 12px; font-weight: 600; }
.result-stat strong { font-size: 22px; font-weight: 800; letter-spacing: -0.03em; line-height: 1.3; overflow-wrap: anywhere; font-variant-numeric: tabular-nums; }
.report-history, .report-lineup { margin-top: 32px; }
.report-section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.report-section-head h3 { font-size: 15px; font-weight: 800; letter-spacing: -0.02em; }
.report-section-head > span { color: var(--report-muted); font-family: var(--font-mono); font-size: 12px; white-space: nowrap; font-variant-numeric: tabular-nums; }
.report-palette {
  --palette-columns: var(--palette-desktop-columns);
  display: flex;
  flex-wrap: wrap;
  gap: 12px 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.report-token { flex: 0 0 calc((100% - (var(--palette-columns) - 1) * 6px) / var(--palette-columns)); min-width: 0; }
.report-token-color { display: block; width: 100%; height: 64px; border-radius: 12px; box-shadow: inset 0 0 0 1px var(--chip-edge); }
.report-token-label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  margin-top: 8px;
  color: var(--report-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.report-answer-mark { display: block; width: 12px; height: 12px; background: var(--positive); --icon: url("../assets/icons/ui/check.svg"); }
.is-missed .report-answer-mark { background: currentColor; --icon: url("../assets/icons/ui/x.svg"); }
.is-missed .report-token-label, .is-missed .report-pick-status { color: var(--report-accent); }
.report-picks { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.report-pick {
  display: grid;
  grid-template-columns: 28px 48px minmax(0, 1fr) 64px;
  align-items: center;
  gap: 14px;
  min-height: 72px;
  padding: 10px 12px 10px 16px;
  border-radius: var(--radius);
  background: var(--report-wash);
}
.report-pick-number { color: var(--report-muted); font-family: var(--font-mono); font-size: 13px; font-weight: 600; font-variant-numeric: tabular-nums; }
.report-pick-avatar { display: block; width: 48px; height: 48px; overflow: hidden; border-radius: 50%; background: var(--report-paper); box-shadow: 0 0 0 2.5px var(--report-paper), 0 0 0 5px var(--pick-color, var(--report-rule)); }
.report-pick-avatar img { display: block; width: 100%; height: 100%; object-fit: cover; }
.report-pick-body { min-width: 0; }
.report-pick-body strong { display: block; font-size: 15px; font-weight: 750; letter-spacing: -0.01em; line-height: 1.4; overflow-wrap: anywhere; word-break: keep-all; }
.report-pick-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 2px 12px; margin-top: 2px; color: var(--report-muted); font-size: 12px; }
.report-pick-meta code { font-size: 11.5px; font-variant-numeric: tabular-nums; }
.report-pick-status { font-weight: 700; }
.report-pick-color { width: 100%; height: 44px; border-radius: 12px; box-shadow: inset 0 0 0 1px var(--chip-edge); }
.result-stat-series { gap: 14px; padding-top: 32px; }
.result-stat-series > span { color: var(--report-ink); font-size: 15px; font-weight: 800; letter-spacing: -0.02em; }
.result-series-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; width: 100%; min-width: 0; }
.result-series-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  column-gap: 10px;
  row-gap: 9px;
  min-width: 0;
  padding: 10px 14px 12px 10px;
  border-radius: 16px;
  background: var(--report-wash);
  color: var(--report-ink);
  font-size: 13px;
  font-weight: 650;
  line-height: 1.3;
}
.result-series-item .series-logo-badge { width: 26px; height: 26px; border-radius: 50%; }
.result-series-item .series-icon-img { width: 20px; height: 16px; }
.result-series-name { min-width: 0; word-break: keep-all; overflow-wrap: anywhere; }
.result-series-item.is-empty { display: flex; grid-column: 1 / -1; }
.result-series-score { display: inline-flex; align-items: baseline; gap: 6px; font-variant-numeric: tabular-nums; white-space: nowrap; }
.result-series-score strong { font-size: 17px; font-weight: 800; letter-spacing: -0.02em; }
.result-series-score small { color: var(--report-muted); font-family: var(--font-mono); font-size: 12px; font-weight: 600; }
.result-series-meter { grid-column: 1 / -1; height: 6px; overflow: hidden; border-radius: 999px; background: var(--report-paper); box-shadow: inset 0 0 0 1px var(--report-rule); }
.result-series-meter .result-series-fill { display: block; width: 0; height: 100%; border-radius: inherit; box-shadow: none; }
.report-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px dashed var(--report-rule);
  color: var(--report-muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.report-footer > span:first-child { color: var(--report-ink); }

.result-actions { grid-area: actions; display: grid; gap: 10px; }
.result-actions .save-button { width: 100%; }
.result-actions .save-button::before {
  content: "";
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  background: currentColor;
  --icon: url("../assets/icons/ui/maximize-2.svg");
}
.result-actions .ghost-button { min-height: 52px; border-radius: var(--radius); font-size: 15px; }
.result-side { grid-area: notes; min-width: 0; }
.wrong-note {
  padding: 20px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm), inset 0 0 0 1px var(--line);
}
.wrong-note-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 6px; }
.wrong-note h3 { font-size: 16px; font-weight: 800; letter-spacing: -0.02em; }
.wrong-note-actions { display: flex; align-items: center; gap: 6px; flex: 0 0 auto; }
.wrong-note-share,
.wrong-note-expand {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--ink-2);
  font-size: 12px;
  font-weight: 650;
}
.wrong-note-share::before {
  content: "";
  width: 13px;
  height: 13px;
  background: currentColor;
  --icon: url("../assets/icons/ui/share.svg");
}
.wrong-note-expand::after {
  content: "";
  width: 13px;
  height: 13px;
  background: currentColor;
  --icon: url("../assets/icons/ui/maximize-2.svg");
}
.wrong-note-list { display: grid; max-height: 420px; overflow-y: auto; overscroll-behavior: contain; scrollbar-width: thin; scrollbar-color: var(--line-strong) transparent; }
.wrong-note-card {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  width: 100%;
  min-width: 0;
  padding: 12px 10px;
  border-radius: var(--radius);
  color: var(--ink);
  text-align: left;
  box-shadow: inset 0 -1px 0 var(--line);
}
.wrong-note-card:last-child { box-shadow: none; }
/* A quiet chevron hints that the card opens the idol's details. */
.wrong-note-card::after {
  content: "";
  width: 16px;
  height: 16px;
  background: var(--faint);
  --icon: url("../assets/icons/ui/arrow-right.svg");
  transition: transform var(--normal) var(--ease), background-color var(--fast) ease;
}
.wrong-note-card:focus-visible { outline-offset: -2px; }
.wrong-note-thumb { width: 48px; height: 58px; border-radius: 12px; background: var(--surface-2); object-fit: cover; object-position: top center; }
.wrong-note-body { display: grid; gap: 6px; min-width: 0; }
.wrong-note-name { font-size: 14px; font-weight: 750; word-break: keep-all; overflow-wrap: anywhere; }
.wrong-note-colors { display: flex; flex-wrap: wrap; gap: 6px; min-width: 0; }
.wrong-color-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  height: 26px;
  padding: 0 9px 0 4px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  line-height: 1.3;
}
.wrong-color-badge .mini-chip { width: 18px; height: 18px; }
.wrong-color-badge span:last-child { overflow-wrap: anywhere; }
.wrong-color-badge.is-correct { color: var(--ink); }
.wrong-color-badge.is-timeout { padding-left: 10px; background: color-mix(in srgb, var(--negative) 12%, transparent); color: var(--negative); }

/* ───────────────────────── Dialogs ───────────────────────── */
.result-preview-modal, .wrong-note-modal {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: grid;
  place-items: center;
  padding: max(20px, env(safe-area-inset-top)) 20px max(20px, env(safe-area-inset-bottom));
  opacity: 0;
  pointer-events: none;
  transition: opacity 220ms ease;
}
.wrong-note-modal { z-index: 80; }
.result-preview-modal.is-open, .wrong-note-modal.is-open { opacity: 1; pointer-events: auto; }
.result-preview-backdrop, .wrong-note-backdrop {
  position: absolute;
  inset: 0;
  background: rgb(8 8 12 / 52%);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}
.result-preview-card, .wrong-note-modal-content {
  position: relative;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: 20px;
  width: min(880px, 100%);
  min-width: 0;
  max-height: 90vh;
  max-height: 90dvh;
  padding: 24px;
  border-radius: var(--radius-xl);
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow-lg), inset 0 0 0 1px var(--line);
  transform: translateY(14px) scale(.98);
  transition: transform 320ms var(--ease);
  overflow: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
}
.result-preview-modal.is-open .result-preview-card, .wrong-note-modal.is-open .wrong-note-modal-content { transform: none; }
.result-preview-head, .wrong-note-modal-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-width: 0; }
.result-preview-head h2, .wrong-note-modal-head h2 { font-size: 20px; font-weight: 800; letter-spacing: -0.03em; }
/* Flex, not grid: the hidden "×" fallback text would otherwise claim a second grid row and lift the icon. */
.result-preview-close, .wrong-note-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--surface-2);
  color: var(--ink-2);
  font-size: 0;
  line-height: 0;
}
.result-preview-close::before, .wrong-note-close::before {
  content: "";
  width: 18px;
  height: 18px;
  background: currentColor;
  --icon: url("../assets/icons/ui/x.svg");
}
.result-preview-card img {
  display: block;
  justify-self: center;
  width: auto;
  height: auto;
  min-height: 0;
  max-width: 100%;
  max-height: 66dvh;
  border-radius: var(--radius);
  object-fit: contain;
  box-shadow: var(--shadow-md), inset 0 0 0 1px var(--line);
}
.result-preview-action { justify-self: center; width: min(100%, 440px); }
.wrong-note-modal-content { width: min(820px, 100%); grid-template-rows: auto minmax(0, 1fr); }
.wrong-note-modal-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 28px; min-height: 0; overflow-y: auto; overscroll-behavior: contain; scrollbar-width: thin; }
.wrong-note-card.is-modal { grid-template-columns: 60px minmax(0, 1fr) auto; padding-block: 16px; }
.wrong-note-card.is-modal .wrong-note-thumb { width: 60px; height: 72px; }
.wrong-note-card.is-modal .wrong-note-name { font-size: 15px; }
.guide-image-content { width: min(760px, 100%); height: min(840px, 90vh); height: min(840px, 90dvh); grid-template-rows: auto minmax(0, 1fr) auto; }
.guide-image-heading { min-width: 0; word-break: keep-all; overflow-wrap: anywhere; }
.guide-image-heading p { margin-top: 4px; color: var(--muted); font-size: 13px; line-height: 1.5; }
.guide-image-stage {
  display: grid;
  place-items: center;
  min-width: 0;
  min-height: 0;
  border-radius: var(--radius-lg);
  background: radial-gradient(120% 70% at 50% 18%, var(--frame-light), transparent 70%), var(--frame-bg);
  box-shadow: inset 0 0 0 1px var(--line);
}
.guide-image-stage img { display: block; width: 100%; height: 100%; min-height: 0; padding: 3%; object-fit: contain; }
.guide-image-stage p { padding: 24px; color: var(--muted); text-align: center; font-size: 14px; }
.guide-image-color {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 16px;
  min-width: 0;
  padding: 8px 8px 8px 8px;
  border-radius: var(--radius);
  background: var(--surface-2);
}
#guideImageSwatch { display: block; min-width: 0; height: 64px; border-radius: 12px; box-shadow: inset 0 0 0 1px var(--chip-edge); }
.guide-image-color .guide-copy {
  height: 48px;
  padding: 0 16px;
  border-radius: 12px;
  background: var(--surface);
  box-shadow: var(--shadow-sm), inset 0 0 0 1px var(--line);
}
.guide-image-color .guide-copy code { font-size: 15px; }

/* ───────────────────────── Interaction ───────────────────────── */
@media (hover: hover) and (pointer: fine) {
  .guide-entry:hover, .back-button:hover, .theme-toggle:hover { background: var(--surface-2); }
  .back-button:hover::before { transform: translateX(-3px); }
  .language-button:not(.is-selected):hover { color: var(--ink); }
  .series-grid .choice-label:hover { transform: translateY(-2px); box-shadow: var(--shadow-md), inset 0 0 0 1px var(--line-strong); }
  .series-grid .choice-label:has(input:checked):hover { box-shadow: 0 0 0 2px var(--tone), var(--shadow-md); }
  .count-preset:not(.is-selected):hover { color: var(--ink); }
  .difficulty-grid .choice-label:not(:has(input:checked)):hover { background: var(--surface-3); }
  .primary-button:hover:not(:disabled), .next-button:hover, .save-button:hover:not(:disabled) { transform: translateY(-1px); }
  .primary-button:hover:not(:disabled)::after, .next-button:hover::after { transform: translateX(4px); }
  .ghost-button:hover { background: var(--surface-2); color: var(--ink); }
  .custom-action-button.is-danger:hover { background: color-mix(in srgb, var(--negative) 10%, transparent); color: var(--negative); }
  .custom-filter-chip:not(.is-selected):hover .custom-filter-icon { opacity: 1; filter: none; }
  .custom-idol-card:hover { background: var(--surface-2); }
  .custom-idol-card:hover .custom-idol-avatar { transform: scale(1.04); }
  .custom-idol-card.is-selected:hover .custom-idol-avatar { transform: scale(.96); }
  .custom-search-clear:hover, .wrong-note-share:hover:not(:disabled), .wrong-note-expand:hover, .result-preview-close:hover, .wrong-note-close:hover { background: var(--surface-3); color: var(--ink); }
  .color-choice:not(:disabled):hover {
    transform: translateY(-4px);
    box-shadow: inset 0 0 0 1px var(--chip-edge), 0 2px 4px rgb(0 0 0 / 8%), 0 18px 32px -14px rgb(0 0 0 / 45%);
  }
  .color-choice::before { display: grid; }
  .color-choice:not(:disabled)::before { opacity: 1; }
  .guide-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md), inset 0 0 0 1px var(--line); }
  .wrong-note-card:hover { background: var(--surface-2); box-shadow: none; }
  .wrong-note-card:hover::after { background: var(--ink); transform: translateX(3px); }
  .wrong-note-card:hover .wrong-note-name { color: var(--accent); }
  .guide-idol-open:hover .guide-idol-name { color: var(--accent); }
  .guide-idol-open:hover .guide-avatar { transform: scale(1.05); }
  .guide-copy:hover { color: var(--ink); }
  .guide-card > .guide-copy:hover { background: var(--surface-2); }
  .source-note a:hover { color: var(--ink); }
}
button:active:not(:disabled):not(.color-choice):not(.custom-idol-card) { transform: scale(.98); }

@keyframes screenEnter { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@keyframes comboPop { 0% { transform: scale(.8); } 60% { transform: scale(1.12); } 100% { transform: scale(1); } }
@keyframes scoreEarned { from { opacity: 0; transform: translateY(6px) scale(.9); } to { opacity: 1; transform: none; } }
@keyframes stamp { 0% { opacity: 0; transform: translateY(-10px) scale(.7); } 100% { opacity: 1; transform: none; } }
@keyframes shake { 0%, 100% { transform: translateX(0); } 20% { transform: translateX(-8px); } 40% { transform: translateX(6px); } 60% { transform: translateX(-4px); } 80% { transform: translateX(2px); } }
@keyframes shimmer { from { background-position: 120% 0, 0 0; } to { background-position: -120% 0, 0 0; } }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }
@keyframes spin { to { transform: rotate(1turn); } }
@keyframes pulse { 50% { opacity: .55; } }

/* ───────────────────────── Responsive ───────────────────────── */
@media (max-width: 1080px) {
  .settings-grid { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .session-panel { position: static; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 32px; align-items: start; }
  .session-panel .start-actions { grid-column: 1 / -1; grid-template-columns: minmax(0, 1fr) minmax(240px, 320px); align-items: end; column-gap: 32px; }
  .result-layout { grid-template-columns: minmax(0, 1fr); grid-template-areas: "report" "actions" "notes"; width: min(760px, 100%); margin-inline: auto; }
  .result-actions { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
  .quiz-nav { grid-template-columns: auto minmax(0, 1fr); gap: 16px; }
  .quiz-nav .combo-badge { position: absolute; top: 88px; right: 0; z-index: 4; }
  .quiz-progress { max-width: none; }
  .stage {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas: "image" "panel";
    gap: 20px;
  }
  .image-frame { width: auto; height: min(42svh, 420px); min-height: 260px; border-radius: var(--radius-lg); }
  .stage-panel { gap: 16px; width: min(500px, 100%); justify-self: center; }
  .caption { text-align: center; }
  .feedback { margin-top: 16px; }
}
@media (max-width: 760px) {
  .topbar { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 12px 8px; }
  .header-actions { display: contents; }
  .topbar .brand-lockup { grid-column: 1 / 3; grid-row: 1; }
  .topbar .theme-toggle { grid-column: 3; grid-row: 1; }
  .topbar .guide-entry { grid-column: 1; grid-row: 2; justify-self: start; }
  .topbar .language-toggle { grid-column: 2 / 4; grid-row: 2; justify-self: end; }
  .guide-topbar .back-button { grid-column: 1 / 3; grid-row: 1; justify-self: start; }
  .guide-topbar .language-toggle { grid-column: 1 / -1; grid-row: 2; justify-self: start; }
  .hero { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .hero-stats { padding-bottom: 0; }
  .hero-stat:first-child { padding-left: 0; }
  .hero-stat dd { font-size: 30px; }
  .ribbon-chip { width: 116px; grid-template-rows: 54px auto; }
  .series-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .series-grid .series-card-all { grid-column: span 1; }
  .series-grid .choice-label { min-height: 132px; padding: 16px; }
  .series-card-all .series-logo-badge { width: 30px; height: 30px; margin-left: -12px; }
  .series-card-all .series-icon-img { width: 22px; height: 18px; }
  .group-choice-main strong { font-size: 15px; }
  .session-panel { grid-template-columns: minmax(0, 1fr); padding: 20px; border-radius: var(--radius-lg); gap: 26px; }
  .session-panel .start-actions { grid-template-columns: minmax(0, 1fr); }
  .custom-panel { padding: 16px; border-radius: var(--radius-lg); }
  .custom-toolbar { grid-template-columns: minmax(0, 1fr); }
  .custom-filter-row, .guide-filters { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); border-radius: 16px; }
  .custom-filter-chip { width: 100%; min-width: 0; border-radius: 12px; }
  .custom-idol-grid { grid-template-columns: repeat(auto-fill, minmax(84px, 1fr)); }
  .custom-idol-card { grid-template-rows: 60px auto; min-height: 112px; contain-intrinsic-size: 84px 112px; }
  .custom-idol-avatar { width: 60px; }
  .guide-toolbar { grid-template-columns: minmax(0, 1fr); border-radius: 22px; }
  .guide-toolbar .guide-filters { border-radius: 0; }
  .guide-search { height: 44px; }
  .guide-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .guide-card { grid-template-rows: 88px auto auto; contain-intrinsic-size: auto 250px; }
  .guide-card-heading { padding: 0 14px 12px; gap: 10px; }
  .guide-card > .guide-copy { padding: 0 14px; }
  .guide-avatar { width: 52px; height: 52px; margin-top: -26px; }
  .guide-idol-name { font-size: 15px; }
  .result-layout { padding-top: 16px; }
  .result-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .report-palette { --palette-columns: var(--palette-mobile-columns); }
  .report-token-color { height: 48px; }
  .wrong-note-modal-list { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 600px) {
  .result-series-list { grid-template-columns: minmax(0, 1fr); }
  .stat span { font-size: 10px; letter-spacing: .04em; }
  .stat { flex-direction: column; gap: 0; }
  .stat:nth-child(2) { align-items: center; }
  .stat:last-child { align-items: flex-end; }
  .quiz-nav .back-button { width: 40px; padding: 0; justify-content: center; font-size: 0; gap: 0; }
  .swatches { --swatch-gap: 10px; }
  .color-choice { aspect-ratio: 4 / 3; border-radius: var(--radius); }
  .color-choice::after { width: 32px; height: 32px; }
  .answer-note { padding: 12px; }
  .answer-result { font-size: 15px; }
  .next-button { position: sticky; bottom: max(12px, env(safe-area-inset-bottom)); z-index: 5; }
  .result-report { border-radius: var(--radius-lg); }
  .report-score-row { gap: 12px; }
  .report-seal { width: 78px; height: 78px; border-width: 2px; box-shadow: 0 0 0 4px var(--report-paper), 0 0 0 5px var(--report-rule); }
  .report-seal > span { font-size: 32px; }
  .report-seal small { font-size: 6px; }
  .result-stats > .result-stat { padding: 12px 14px; }
  .result-stat strong { font-size: 18px; }
  .report-pick { grid-template-columns: 22px 40px minmax(0, 1fr) 40px; gap: 10px; padding: 8px 10px 8px 12px; }
  .report-pick-avatar { width: 40px; height: 40px; }
  .report-pick-color { height: 36px; border-radius: 10px; }
  .report-pick-body strong { font-size: 14px; }
  .report-pick-meta { font-size: 11px; gap: 0 8px; }
  .result-actions { grid-template-columns: minmax(0, 1fr); }
  .result-preview-modal, .wrong-note-modal { padding: max(10px, env(safe-area-inset-top)) 10px max(10px, env(safe-area-inset-bottom)); }
  .result-preview-card, .wrong-note-modal-content { padding: 16px; gap: 14px; border-radius: var(--radius-lg); }
  .result-preview-card img { max-height: 64dvh; }
  #guideImageSwatch { height: 52px; }
}
@media (max-width: 380px) {
  .language-button { min-width: 0; padding: 0 8px; }
  .language-code { display: none; }
  .series-grid .choice-label { padding: 14px; min-height: 124px; }
  .group-choice-main strong { font-size: 14px; }
  .series-grid .series-logo-badge { width: 40px; height: 34px; }
  .series-card-all .series-logo-badge { width: 26px; height: 26px; margin-left: -12px; }
  .series-card-all .series-icon-img { width: 19px; height: 16px; }
  .difficulty-spec small { display: none; }
  .guide-grid { grid-template-columns: minmax(0, 1fr); }
  #scorePercent { font-size: 64px; }
}
@media (max-height: 500px) and (min-width: 600px) {
  .guide-image-content { grid-template-columns: minmax(0, 1fr) minmax(200px, .7fr); grid-template-rows: auto minmax(0, 1fr); }
  .guide-image-content > .wrong-note-modal-head { grid-column: 1 / -1; }
  .guide-image-color { grid-template-columns: minmax(0, 1fr); grid-template-rows: minmax(0, 1fr) auto; }
  #guideImageSwatch { height: 100%; min-height: 64px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
  .swatch-ribbon-track { animation: none; }
}