:root {
  --bg: #f4f5f9;
  --surface: #ffffff;
  --surface-2: #f7f8fb;
  --line: #e4e6ee;
  --line-strong: #d3d6e2;
  --text: #171923;
  --text-2: #3f4354;
  --muted: #606579;
  --accent: #4f46e5;
  --accent-strong: #4338ca;
  --accent-soft: #eef0ff;
  --accent-ink: #3730a3;
  --accent-glow: rgba(79, 70, 229, 0.16);
  --radius: 22px;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.05);
  --shadow-md: 0 1px 2px rgba(16, 24, 40, 0.04), 0 10px 30px -10px rgba(16, 24, 40, 0.14);
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

body.spicy-mode {
  --accent: #d32f2f;
  --accent-strong: #b71c1c;
  --accent-soft: #fff0f0;
  --accent-ink: #b71c1c;
  --accent-glow: rgba(211, 47, 47, 0.16);
}

body.hot-mode {
  --accent: #7f0000;
  --accent-strong: #2a0000;
  --accent-soft: #f8eaea;
  --accent-ink: #7f0000;
  --accent-glow: rgba(127, 0, 0, 0.2);
}

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

body {
  min-height: 100vh;
  font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont,
    "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", system-ui, sans-serif;
  background-color: var(--bg);
  background-image: radial-gradient(1000px 520px at 50% -160px, var(--accent-glow), transparent 72%);
  background-repeat: no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  padding-top: calc(env(safe-area-inset-top) + 48px);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  word-break: keep-all;
  transition: background-color 0.4s ease;
}

.container {
  width: 100%;
  max-width: 600px;
  text-align: center;
}

h1 {
  color: var(--text);
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 10px;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}

h1.shake {
  animation: title-shake 0.3s ease;
}

@keyframes title-shake {
  25%, 75% { transform: translateX(-3px); }
  50% { transform: translateX(3px); }
}

.subtitle {
  color: var(--muted);
  margin-bottom: 28px;
  font-size: 0.95rem;
  line-height: 1.65;
  letter-spacing: -0.01em;
}

/* ---------- mode switch (segmented control) ---------- */
.modes {
  display: flex;
  gap: 4px;
  padding: 4px;
  margin: 0 auto 14px;
  max-width: 380px;
  background: #e9ebf2;
  border: 1px solid var(--line);
  border-radius: 14px;
}

.mode-btn {
  flex: 1;
  text-decoration: none;
  background: transparent;
  color: var(--muted);
  border: none;
  border-radius: 10px;
  padding: 11px 8px;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.mode-btn:hover {
  color: var(--text);
}

.mode-btn[aria-current="page"] {
  background: var(--surface);
  color: var(--text);
  box-shadow: 0 1px 2px rgba(16, 24, 40, 0.08), 0 2px 8px rgba(16, 24, 40, 0.06);
}

.modes { max-width: 440px; }
.mode-btn { white-space: nowrap; min-width: 0; }
@media (max-width: 420px) {
  .mode-btn { padding: 10px 4px; font-size: 0.84rem; letter-spacing: -0.03em; }
}

@media (max-width: 360px) {
  .modes { gap: 2px; padding: 3px; }
  .mode-btn { padding: 10px 2px; font-size: 0.78rem; }
}

/* ---------- who mode hint ---------- */
.who-hint {
  display: none;
  margin: 0;
  padding: 8px 14px;
  border-radius: 999px;
  background: #eef0ff;
  color: #4f46e5;
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.who-hint.show { display: inline-block; }
body.hot-mode .who-hint { background: #f8eaea; color: #7f0000; }
body.spicy-mode .who-hint { background: #fff0f0; color: #b71c1c; }

/* ---------- spice toggle ---------- */
.spices {
  display: flex;
  gap: 6px;
  justify-content: center;
  margin-bottom: 22px;
}

.spice-btn {
  flex: 1;
  max-width: 130px;
  min-width: 0;
  white-space: nowrap;
  background: var(--surface);
  color: var(--text-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 6px;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  font-family: inherit;
  box-shadow: var(--shadow-sm);
}

.spice-btn:hover {
  border-color: var(--line-strong);
  color: var(--text);
}

.spice-btn.active {
  background: linear-gradient(135deg, #6366f1, #4f46e5);
  color: #fff;
  border-color: #4f46e5;
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

.spice-btn[data-spice="medium"].active {
  background: linear-gradient(135deg, #d32f2f, #b71c1c);
  color: #fff;
  border-color: #b71c1c;
  box-shadow: 0 0 0 3px rgba(183, 28, 28, 0.2);
}

.spice-btn[data-spice="hot"].active {
  background: linear-gradient(135deg, #7f0000, #2a0000);
  color: #fff;
  border-color: #2a0000;
  box-shadow: 0 0 0 3px rgba(127, 0, 0, 0.2);
}

/* ---------- category chips ---------- */
.categories {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  margin-bottom: 28px;
}

.chip {
  background: var(--surface);
  color: var(--text-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 13px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
  font-family: inherit;
}

.chip:hover {
  border-color: var(--line-strong);
  background: var(--surface-2);
  color: var(--text);
}

.chip.active {
  background: var(--text);
  color: #fff;
  border-color: var(--text);
}

/* ---------- question card ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 52px 36px;
  min-height: 240px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  box-shadow: var(--shadow-md);
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent);
  transition: background 0.3s ease;
}

.badge {
  display: none;
  background: var(--accent-soft);
  color: var(--accent-ink);
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.badge.show {
  display: inline-block;
}

.question {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -0.025em;
  color: var(--text);
  max-width: 30ch;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.question.placeholder {
  color: var(--muted);
  font-weight: 500;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.question.pop {
  animation: pop 0.38s var(--ease);
}

@keyframes pop {
  0% { opacity: 0; transform: translateY(8px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* ---------- primary button ---------- */
.btn {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 14px;
  min-width: 220px;
  padding: 16px 36px;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  cursor: pointer;
  box-shadow: 0 1px 2px rgba(16, 24, 40, 0.1), 0 8px 20px -6px var(--accent);
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease;
  font-family: inherit;
}

.btn:hover {
  background: var(--accent-strong);
  transform: translateY(-1px);
  box-shadow: 0 1px 2px rgba(16, 24, 40, 0.1), 0 12px 26px -8px var(--accent);
}

.btn:active {
  transform: translateY(0) scale(0.98);
}

.counter {
  margin-top: 16px;
  color: var(--muted);
  font-size: 0.82rem;
  font-variant-numeric: tabular-nums;
}

.chip.install-btn {
  position: fixed;
  top: calc(env(safe-area-inset-top) + 8px);
  right: calc(env(safe-area-inset-right) + 8px);
  z-index: 2;
  padding: 5px 9px;
  font-size: 0.75rem;
  line-height: 1.4;
  white-space: nowrap;
}
.install-guide {
  margin: auto;
  width: min(360px, calc(100% - 32px));
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow-md);
  text-align: center;
}
.install-guide::backdrop { background: rgba(23, 25, 35, 0.35); }
.install-guide h2 { font-size: 1.1rem; }
.install-guide p { margin: 16px 0; line-height: 1.65; }

/* ---------- focus ---------- */
.mode-btn:focus-visible,
.spice-btn:focus-visible,
.chip:focus-visible,
.option:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ---------- balance game card ---------- */
.card.balance {
  padding: 40px 28px 32px;
}

.versus {
  display: none;
  width: 100%;
  flex-direction: column;
  align-items: stretch;
  gap: 10px;
}

.versus.show {
  display: flex;
}

.versus.pop {
  animation: pop 0.38s var(--ease);
}

.option {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 112px;
  padding: 20px 18px;
  background: var(--surface-2);
  color: var(--text);
  border: 1.5px solid var(--line);
  border-radius: 18px;
  font-family: inherit;
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: -0.02em;
  word-break: keep-all;
  cursor: pointer;
  transition: transform 0.18s var(--ease), background 0.2s ease, color 0.2s ease,
    border-color 0.2s ease, opacity 0.2s ease, box-shadow 0.2s ease;
}

.option:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: var(--shadow-md);
}

.option .opt-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: var(--surface);
  border: 1px solid var(--line);
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--accent-ink);
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.versus.has-choice .option:not(.chosen) {
  opacity: 1;
}

.versus.has-choice .option:not(.chosen):hover {
  opacity: 1;
}

.option.chosen {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 1px 2px rgba(16, 24, 40, 0.1), 0 12px 28px -10px var(--accent);
}

.option.chosen .opt-tag {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.35);
  color: #fff;
}

.vs {
  align-self: center;
  flex: none;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--surface);
  color: var(--muted);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-md);
  font-weight: 800;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  z-index: 1;
}

@media (min-width: 560px) {
  .versus {
    flex-direction: row;
    align-items: stretch;
    gap: 0;
  }
  .vs {
    align-self: center;
    margin: 0 -12px;
  }
  .option {
    min-height: 160px;
  }
}

@media (max-width: 420px) {
  body {
    padding: 28px 16px;
    padding-top: calc(env(safe-area-inset-top) + 48px);
    align-items: flex-start;
  }
  h1 {
    font-size: 1.65rem;
  }
  .subtitle {
    font-size: 0.88rem;
    margin-bottom: 22px;
  }
  .chip {
    padding: 6px 11px;
    font-size: 0.8rem;
  }
  .card {
    padding: 40px 22px;
    min-height: 210px;
  }
  .card.balance {
    padding: 32px 16px 18px;
  }
  .question {
    font-size: 1.28rem;
  }
  .option {
    min-height: 96px;
    font-size: 1.04rem;
  }
  .vs {
    margin: -16px 0;
  }
  .btn {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .btn:hover,
  .option:hover,
  .option.chosen {
    transform: none;
  }
}
.question, .option, .badge, .who-hint { max-width: 100%; overflow-wrap: anywhere; }
.option { min-width: 0; }
.btn { min-width: 0; max-width: 100%; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0;
}