/* ============================================================
   BodyClock — chronotype & circadian day planner
   Mood: 차분한 바이오리듬 — 딥 네이비 ↔ 선라이즈 그라디언트,
         부드러운 곡선, 24시간 링/타임라인.
   ============================================================ */

:root {
  /* deep-night base (native DARK) */
  --bg: #0d1226;
  --bg-2: #11173a;
  --surface: #161d40;
  --surface-2: #1c2456;
  --surface-hover: #232c63;
  --line: rgba(150, 170, 255, 0.14);
  --line-strong: rgba(150, 170, 255, 0.28);
  --ink: #eaf0ff;
  --ink-soft: #aeb9e6;
  --ink-faint: #7884bc;
  --accent: #ffb27a;          /* sunrise amber */
  --accent-2: #ff8fb0;        /* dawn pink */
  --accent-3: #7aa2ff;        /* pre-dawn blue */
  --accent-ink: #1a1024;
  --ok: #6fe0c0;
  --warn: #ffce6a;
  --risk: #ff7d7d;

  /* timeline band colors */
  --band-sleep: #3a4a8c;
  --band-wake: #ffb27a;
  --band-light: #ffd56a;
  --band-peak: #ff8fb0;
  --band-deep: #7aa2ff;
  --band-exercise: #6fe0c0;
  --band-blue: #5d6cb0;
  --band-wind: #9a7fd0;

  --radius: 18px;
  --radius-sm: 12px;
  --radius-xs: 8px;
  --r-pill: 999px;
  --ease-soft: cubic-bezier(0.37, 0, 0.63, 1);
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo",
    "Malgun Gothic", "Segoe UI", sans-serif;
  --display: "Fraunces", "Inter", "Apple SD Gothic Neo", serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, monospace;
}
/* ===== 3-way theme (Light/Dark/System) — base :root above = native DARK. Opposite (light) WCAG-aware. ===== */
:root[data-theme="light"] {
  --bg: #f6f4ef;
  --bg-2: #ece7dd;
  --surface: #ffffff;
  --surface-2: #f5f1e8;
  --surface-hover: #efe9dc;
  --line: rgba(60, 40, 20, 0.12);
  --line-strong: rgba(60, 40, 20, 0.22);
  --ink: #26203a;
  --ink-soft: #5a5470;
  --ink-faint: #8b85a0;
  --accent: #d97a3a;          /* deeper sunrise for contrast on paper */
  --accent-2: #c85a7e;
  --accent-3: #4a6ac0;
  --accent-ink: #ffffff;
  --ok: #2f9e72;
  --warn: #b88425;
  --risk: #c0392b;

  --band-sleep: #8390c4;
  --band-wake: #d97a3a;
  --band-light: #c99524;
  --band-peak: #c85a7e;
  --band-deep: #4a6ac0;
  --band-exercise: #2f9e72;
  --band-blue: #7a82b0;
  --band-wind: #8a6ab8;
}

* { box-sizing: border-box; }
html, body { height: 100%; }

body {
  margin: 0;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(120% 90% at 80% -10%, rgba(255, 143, 176, 0.14), transparent 55%),
    radial-gradient(110% 80% at 10% 110%, rgba(122, 162, 255, 0.16), transparent 55%),
    linear-gradient(170deg, var(--bg-2) 0%, var(--bg) 62%);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

#bg-glow {
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background: radial-gradient(45% 38% at 78% 32%, rgba(255, 178, 122, 0.10), transparent 70%);
  animation: bgDrift 26s ease-in-out infinite;
}
@keyframes bgDrift {
  0%, 100% { transform: translateY(0) scale(1); opacity: 0.7; }
  50% { transform: translateY(-3%) scale(1.05); opacity: 1; }
}

/* ---------- Topbar ---------- */
.topbar {
  position: relative; z-index: 2;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; padding-top: max(16px, env(safe-area-inset-top));
  gap: 12px;
}
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand-mark {
  font-size: 1.5rem; color: var(--accent);
  text-shadow: 0 0 18px rgba(255, 178, 122, 0.45);
}
.brand h1 { margin: 0; font-size: 1.15rem; font-weight: 700; letter-spacing: -0.01em; }
.brand p { margin: 1px 0 0; font-size: 0.74rem; color: var(--ink-faint); }
.switchers { display: flex; align-items: center; gap: 8px; }

/* ---------- Step nav ---------- */
.steps {
  position: relative; z-index: 2;
  display: flex; align-items: center; gap: 6px;
  padding: 0 20px 8px;
  color: var(--ink-faint); font-size: 0.82rem;
}
.step {
  font-family: inherit; font-size: inherit; font-weight: 600;
  background: none; border: none; color: var(--ink-faint);
  cursor: default; padding: 4px 2px;
}
.step.is-active { color: var(--accent); }
.step-sep { opacity: 0.5; }

/* ---------- Main ---------- */
.wrap {
  position: relative; z-index: 1;
  flex: 1; width: 100%; max-width: 760px; margin: 0 auto;
  padding: 8px 20px 28px;
}

.screen { animation: fadeUp 0.3s ease-out; }
.is-hidden { display: none !important; }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(20px, 4vw, 30px);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.22);
}

/* ---------- Intro ---------- */
.intro-card { text-align: center; display: flex; flex-direction: column; align-items: center; gap: 14px; }
.tagline {
  margin: 0; padding: 6px 14px; border-radius: var(--r-pill);
  background: rgba(255, 178, 122, 0.12); color: var(--accent);
  font-size: 0.82rem; font-weight: 600;
}
.intro-title { margin: 4px 0 0; font-family: var(--display); font-size: clamp(1.4rem, 4.4vw, 2rem); font-weight: 600; }
.intro-body { margin: 0; max-width: 44ch; color: var(--ink-soft); font-size: 0.94rem; line-height: 1.65; }
.intro-privacy { margin: 0; font-size: 0.78rem; color: var(--ink-faint); }

.ring-hero { position: relative; width: 180px; height: 180px; margin: 6px 0; }
.ring-svg { width: 100%; height: 100%; }
.ring-track { fill: none; stroke: var(--line); stroke-width: 6; }
.ring-arc { fill: none; stroke-width: 6; stroke-linecap: round; transform: rotate(-90deg); transform-origin: center;
  stroke: var(--accent); opacity: 0.85; }
.ring-arc.inner { stroke: var(--accent-2); stroke-dasharray: 60 320; }
.ring-arc.core { stroke: var(--accent-3); stroke-dasharray: 40 170; }
.offline-badge {
  position: absolute; bottom: -28px; left: 50%; transform: translateX(-50%);
  white-space: nowrap; font-size: 0.7rem; color: var(--ink-faint);
  background: var(--surface-2); border: 1px solid var(--line);
  padding: 4px 10px; border-radius: var(--r-pill);
}

.cta-row { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-top: 12px; }

/* ---------- Buttons ---------- */
.btn {
  font-family: inherit; font-size: 0.95rem; font-weight: 600;
  padding: 12px 22px; border-radius: var(--r-pill);
  border: 1px solid transparent; cursor: pointer;
  transition: transform 0.12s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: var(--accent-ink);
  box-shadow: 0 6px 22px rgba(255, 143, 176, 0.28);
}
.btn.primary:hover { filter: brightness(1.06); }
.btn.ghost { background: transparent; border-color: var(--line-strong); color: var(--ink); }
.btn.ghost:hover { background: var(--surface-2); border-color: var(--accent); }

/* ---------- Quiz ---------- */
.quiz-card { display: flex; flex-direction: column; gap: 16px; }
.quiz-head { text-align: center; }
.quiz-title { margin: 0; font-family: var(--display); font-size: 1.3rem; font-weight: 600; }
.quiz-sub { margin: 4px 0 0; color: var(--ink-faint); font-size: 0.84rem; }
.quiz-progress { height: 5px; background: var(--line); border-radius: var(--r-pill); overflow: hidden; }
.quiz-bar-fill { height: 100%; width: 50%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); border-radius: inherit; transition: width 0.3s ease; }
.quiz-step { margin: 0; text-align: center; color: var(--ink-faint); font-size: 0.8rem; font-variant-numeric: tabular-nums; }

.q-step { border: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 14px;
  animation: fadeUp 0.25s ease-out; }
.q-title { font-family: var(--display); font-size: 1.08rem; font-weight: 600; color: var(--ink); padding: 0; }
.q-grid { display: grid; gap: 14px; }
.time-grid { grid-template-columns: repeat(2, 1fr); }
.time-field { display: flex; flex-direction: column; gap: 6px; }
.time-field > span:first-child { font-size: 0.82rem; color: var(--ink-soft); font-weight: 600; }
.time-input {
  display: flex; align-items: center; gap: 8px;
  background: var(--surface-2); border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm); padding: 10px 12px;
}
.time-input input {
  flex: 1; min-width: 0; background: transparent; border: none; color: var(--ink);
  font-family: var(--mono); font-size: 1.1rem; font-variant-numeric: tabular-nums;
}
.time-input input:focus { outline: none; }
.time-input .tlabel {
  position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0);
}

.alarm-row { display: flex; flex-direction: column; gap: 8px; }
.alarm-q { font-size: 0.82rem; color: var(--ink-soft); font-weight: 600; }

.seg-sm { display: inline-flex; flex-wrap: wrap; gap: 0; background: var(--surface-2); border: 1px solid var(--line-strong); border-radius: var(--r-pill); padding: 3px; align-self: flex-start; }
.us-btn {
  font-family: inherit; font-size: 0.82rem; font-weight: 600;
  border: none; background: transparent; color: var(--ink-soft);
  padding: 7px 14px; border-radius: var(--r-pill); cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}
.us-btn:hover { color: var(--ink); }
.us-btn.is-on { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: var(--accent-ink); }

.quiz-nav { display: flex; justify-content: space-between; gap: 10px; margin-top: 4px; }
.quiz-nav .btn.primary { margin-left: auto; }

/* ---------- Result ---------- */
.result-card { display: flex; flex-direction: column; gap: 20px; }
.result-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; flex-wrap: wrap; }
.result-eyebrow { margin: 0; font-family: var(--display); font-size: 1.4rem; font-weight: 600; }
.result-summary { margin: 4px 0 0; color: var(--ink-soft); font-size: 0.92rem; }
.saved-badge { display: inline-block; margin-top: 8px; font-size: 0.72rem; color: var(--ok);
  background: rgba(111, 224, 192, 0.12); padding: 3px 10px; border-radius: var(--r-pill); }

.type-badge {
  display: flex; align-items: center; gap: 8px; flex-shrink: 0;
  padding: 8px 16px; border-radius: var(--r-pill);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: var(--accent-ink); font-weight: 700; font-size: 0.92rem;
  box-shadow: 0 4px 16px rgba(255, 143, 176, 0.3);
}
.type-badge .type-icon { font-size: 1.1rem; }

/* metrics */
.metrics { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.metric {
  background: var(--surface-2); border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: 12px 14px;
}
.metric-label { font-size: 0.72rem; color: var(--ink-faint); font-weight: 600; }
.metric-val { font-family: var(--display); font-size: 1.5rem; font-weight: 600; color: var(--accent);
  font-variant-numeric: tabular-nums; margin-top: 2px; }
.metric-note { font-size: 0.74rem; color: var(--ink-soft); margin: 4px 0 0; line-height: 1.45; }

/* SJL gauge */
.gauge-block { background: var(--surface-2); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 14px 16px; }
.gauge-head { display: flex; justify-content: space-between; align-items: baseline; }
.gauge-title { font-size: 0.86rem; font-weight: 700; color: var(--ink); }
.gauge-val { font-family: var(--mono); font-size: 1.1rem; font-weight: 700; color: var(--accent); font-variant-numeric: tabular-nums; }
.gauge-track { height: 10px; background: var(--line); border-radius: var(--r-pill); overflow: hidden; margin: 10px 0 8px; }
.gauge-fill { height: 100%; width: 0; border-radius: inherit; transition: width 0.6s var(--ease-soft);
  background: linear-gradient(90deg, var(--ok), var(--warn) 60%, var(--risk)); }
.gauge-interp { margin: 0; font-size: 0.82rem; color: var(--ink-soft); line-height: 1.5; }

/* timeline */
.timeline-block { display: flex; flex-direction: column; gap: 12px; }
.tl-head h3 { margin: 0; font-family: var(--display); font-size: 1.15rem; font-weight: 600; }
.tl-head p { margin: 2px 0 0; font-size: 0.78rem; color: var(--ink-faint); }
.timeline-canvas { width: 100%; }
.timeline-canvas svg { width: 100%; height: auto; display: block; }

.tl-legend { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px 14px; }
.tl-legend li { display: flex; gap: 8px; align-items: flex-start; font-size: 0.78rem; color: var(--ink-soft); line-height: 1.4; }
.tl-swatch { width: 12px; height: 12px; border-radius: 3px; margin-top: 2px; flex-shrink: 0; }
.tl-legend b { color: var(--ink); font-weight: 600; }

/* actions */
.result-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.result-actions .btn.primary { flex: 1; min-width: 150px; }

/* ---------- Disclaimer / info ---------- */
.disclaimer {
  margin: 16px 0 0; padding: 14px 16px; font-size: 0.78rem; line-height: 1.6;
  color: var(--ink-soft); background: var(--surface-2);
  border: 1px solid var(--line); border-left: 3px solid var(--warn); border-radius: var(--radius-sm);
}
.disclaimer b { color: var(--ink); }
.info { margin-top: 24px; }
.info h2 { font-family: var(--display); font-size: 1.05rem; margin: 18px 0 6px; color: var(--ink); }
.info p { margin: 0; color: var(--ink-soft); font-size: 0.86rem; line-height: 1.65; }

/* ---------- Ad slot ---------- */
.ad-slot { margin: 18px 0 0; padding: 14px; border: 1px dashed var(--line-strong); border-radius: var(--radius-sm); text-align: center; }
.ad-slot.is-preview { border-style: dashed; }
.ad-label { font-size: 0.66rem; color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.08em; }
.ad-ph { margin-top: 6px; font-size: 0.78rem; color: var(--ink-faint); }

/* ---------- Footer ---------- */
.foot { position: relative; z-index: 1; padding: 18px 20px max(18px, env(safe-area-inset-bottom)); text-align: center; }
.foot a { color: var(--ink-faint); font-size: 0.78rem; text-decoration: none; }
.foot a:hover { color: var(--accent); }

/* ---------- Toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 70px; transform: translate(-50%, 20px);
  background: var(--surface); border: 1px solid var(--line-strong); color: var(--ink);
  padding: 11px 18px; border-radius: var(--r-pill); font-size: 0.86rem; font-weight: 500;
  box-shadow: 0 10px 30px rgba(0,0,0,0.3); opacity: 0; pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease; z-index: 90; max-width: 90vw;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- i18n switcher theming ---------- */
.i18n-switch {
  --i18n-switch-bg: rgba(255,255,255,.07);
  --i18n-switch-border: rgba(255,255,255,.18);
  --i18n-switch-fg: rgba(255,255,255,.9);
  --i18n-switch-active-bg: rgba(255,178,122,.22);
  --i18n-switch-active-fg: #ffd0a8;
  --i18n-switch-menu-bg: #161d40;
  --i18n-switch-menu-border: rgba(255,255,255,.12);
}

/* ---------- Responsive ---------- */
@media (max-width: 540px) {
  .time-grid { grid-template-columns: 1fr; }
  .metrics { grid-template-columns: 1fr; }
  .tl-legend { grid-template-columns: 1fr; }
  .brand p { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  #bg-glow { animation: none; }
  .screen, .q-step { animation: none; }
}

/* ---------- Print (share-card uses canvas, not print, but keep a clean fallback) ---------- */
@media print {
  .topbar, .steps, .foot, .toast, .pmp-fab, .ad-slot, .result-actions { display: none !important; }
  body { background: #fff; color: #000; }
}