:root {
  --bg: #0b0d12;
  --bg-raised: #141824;
  --bg-input: #1c2130;
  --line: #262c3d;
  --fg: #eef1f8;
  --fg-dim: #98a1b8;
  --accent: #ff5a3c;
  --accent-soft: rgba(255, 90, 60, 0.14);
  --ok: #3ddc97;
  --warn: #ffcf5c;
  --radius: 16px;
  --gap: 14px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

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

html, body { height: 100%; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", "Yu Gothic", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overscroll-behavior: none;
}

/* ---------- ビュー切り替え ---------- */
.view { display: none; min-height: 100dvh; }
body[data-view="home"]     .view[data-name="home"],
body[data-view="settings"] .view[data-name="settings"],
body[data-view="setup"]    .view[data-name="setup"],
body[data-view="workout"]  .view[data-name="workout"],
body[data-view="result"]   .view[data-name="result"],
body[data-view="history"]  .view[data-name="history"] { display: block; }

.view--camera { display: none; }
body[data-view="setup"]   .view[data-name="setup"],
body[data-view="workout"] .view[data-name="workout"] { display: flex; flex-direction: column; }

/* ---------- 共通 ---------- */
.head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: calc(var(--safe-top) + 14px) 18px 10px;
}

.brand {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.head__title { font-size: 17px; font-weight: 700; }

.icon-btn {
  background: none;
  border: 0;
  color: var(--fg-dim);
  font: inherit;
  font-size: 14px;
  padding: 8px 4px;
  cursor: pointer;
  min-width: 44px;
}
.icon-btn--placeholder { pointer-events: none; }

.stack {
  display: flex;
  flex-direction: column;
  gap: var(--gap);
  padding: 6px 18px calc(var(--safe-bottom) + 40px);
  max-width: 560px;
  margin: 0 auto;
}

.card {
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}

.card--note { color: var(--fg-dim); font-size: 14px; }
.note__title { color: var(--fg); font-weight: 700; margin-bottom: 6px; font-size: 14px; }
.card--note b { color: var(--fg); }
.card--note ol { margin: 8px 0 8px 18px; }
.card--note li { margin-bottom: 4px; }
.card--note details { margin-top: 10px; }
.card--note summary { cursor: pointer; color: var(--fg); padding: 4px 0; }
.muted { color: var(--fg-dim); font-size: 13px; margin-top: 8px; }

.row { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; padding: 5px 0; }
.row__k { color: var(--fg-dim); font-size: 14px; flex-shrink: 0; }
.row__v { font-size: 15px; text-align: right; }

/* ---------- ヒーロー ---------- */
.hero {
  background: linear-gradient(160deg, #1b2030, #12151f);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 26px 20px 22px;
  text-align: center;
}
.hero__label { color: var(--fg-dim); font-size: 13px; letter-spacing: 0.1em; }
.hero__num {
  font-size: 68px;
  font-weight: 800;
  line-height: 1.05;
  font-variant-numeric: tabular-nums;
  margin: 4px 0 2px;
}
.hero__unit { font-size: 22px; font-weight: 600; color: var(--fg-dim); margin-left: 6px; }
.hero__sub { color: var(--fg-dim); font-size: 14px; }

/* ---------- ボタン ---------- */
.btn {
  display: block;
  width: 100%;
  border: 1px solid transparent;
  border-radius: 14px;
  padding: 15px 18px;
  font: inherit;
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  text-align: center;
  transition: opacity 0.15s ease, transform 0.06s ease;
}
.btn:active { transform: scale(0.985); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn--primary { background: var(--accent); color: #fff; }
.btn--ghost { background: transparent; border-color: var(--line); color: var(--fg); }
.btn--danger { color: #ff7a7a; border-color: rgba(255, 122, 122, 0.3); }
.btn--lg { padding: 18px; font-size: 17px; }
.btn--sm { padding: 11px; font-size: 14px; }

/* ---------- フォーム ---------- */
.field { display: flex; flex-direction: column; gap: 8px; }
.field__label { font-size: 14px; font-weight: 700; }
.field__hint { font-size: 13px; color: var(--fg-dim); }

input[type="time"], input[type="number"] {
  background: var(--bg-input);
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--fg);
  font: inherit;
  padding: 13px 14px;
  width: 100%;
}
input[type="number"] { text-align: center; font-weight: 700; font-variant-numeric: tabular-nums; }
input[type="number"]::-webkit-inner-spin-button { display: none; }

.stepper { display: grid; grid-template-columns: 56px 1fr 56px; gap: 8px; }
.stepper__btn {
  background: var(--bg-input);
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--fg);
  font-size: 20px;
  cursor: pointer;
}

.seg {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  gap: 6px;
  background: var(--bg-input);
  border: 1px solid var(--line);
  border-radius: 13px;
  padding: 5px;
}
.seg--full { width: 100%; }
.seg button {
  background: none;
  border: 0;
  border-radius: 9px;
  color: var(--fg-dim);
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  padding: 11px 6px;
  cursor: pointer;
}
.seg button[aria-checked="true"] { background: var(--accent-soft); color: var(--accent); }

/* ---------- カメラ ---------- */
.camwrap {
  position: relative;
  flex: 1;
  min-height: 0;
  background: #000;
  overflow: hidden;
}
.camwrap video,
.camwrap canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.camwrap video { transform: scaleX(-1); }
.camwrap canvas { transform: scaleX(-1); }
body[data-facing="environment"] .camwrap video,
body[data-facing="environment"] .camwrap canvas { transform: none; }

.camwrap__guide {
  position: absolute;
  left: 16px;
  right: 16px;
  top: calc(var(--safe-top) + 16px);
  background: rgba(11, 13, 18, 0.82);
  backdrop-filter: blur(8px);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 13px 15px;
}
.guide__title { font-size: 15px; font-weight: 700; }
.guide__body { font-size: 13px; color: var(--fg-dim); margin-top: 3px; }

.cam-panel {
  background: var(--bg);
  padding: 16px 18px calc(var(--safe-bottom) + 18px);
  border-top: 1px solid var(--line);
}
.cam-panel__lead { font-size: 14px; color: var(--fg-dim); margin-bottom: 10px; }

.checklist { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 14px; min-height: 32px; }
.chip {
  font-size: 13px;
  padding: 6px 11px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--fg-dim);
  background: var(--bg-input);
}
.chip--ok { color: var(--ok); border-color: rgba(61, 220, 151, 0.35); background: rgba(61, 220, 151, 0.1); }
.chip--ng { color: var(--warn); border-color: rgba(255, 207, 92, 0.35); background: rgba(255, 207, 92, 0.1); }

.cam-actions { display: grid; grid-template-columns: 1fr 2fr; gap: 10px; }
.cam-actions--floating {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: calc(var(--safe-bottom) + 18px);
  grid-template-columns: 1fr;
}
body[data-view="workout"] .view[data-name="workout"] { position: relative; }

/* ---------- HUD ---------- */
.hud {
  position: absolute;
  left: 0;
  right: 0;
  top: calc(var(--safe-top) + 20px);
  text-align: center;
  pointer-events: none;
}
.hud__count {
  font-size: 88px;
  font-weight: 800;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  text-shadow: 0 3px 24px rgba(0, 0, 0, 0.8);
}
.hud__slash { font-size: 34px; color: var(--fg-dim); margin: 0 6px; }
.hud__count span:last-child { font-size: 34px; color: var(--fg-dim); }
.hud__msg {
  margin-top: 8px;
  font-size: 15px;
  font-weight: 700;
  min-height: 26px;
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.9);
}
.hud__msg[data-kind="ok"] { color: var(--ok); }
.hud__msg[data-kind="warn"] { color: var(--warn); }

.hud-bottom {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: calc(var(--safe-bottom) + 86px);
  pointer-events: none;
}
.meter { height: 6px; background: rgba(255, 255, 255, 0.16); border-radius: 999px; overflow: hidden; }
.meter__fill { height: 100%; width: 0%; background: var(--accent); transition: width 0.08s linear; }
.hud-bottom__debug {
  margin-top: 7px;
  font-size: 11px;
  color: rgba(255, 255, 255, 0.6);
  font-variant-numeric: tabular-nums;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.9);
}

/* ---------- リザルト ---------- */
.result-canvas {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  display: block;
}

/* ---------- ゲート ---------- */
.gate {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: #06070b;
  background-image: radial-gradient(120% 60% at 50% 38%, rgba(255, 90, 60, 0.13), transparent 70%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.gate[hidden] { display: none; }
.gate__inner { width: 100%; max-width: 380px; text-align: center; display: flex; flex-direction: column; gap: 12px; }
.gate__eyebrow { color: var(--accent); font-size: 12px; font-weight: 800; letter-spacing: 0.22em; }
.gate__title { font-size: 27px; font-weight: 800; }
.gate__req { color: var(--fg-dim); font-size: 15px; margin-bottom: 10px; }
.gate__req span { color: var(--fg); font-weight: 700; }
.gate__note { color: var(--fg-dim); font-size: 12px; margin-top: 6px; }

/* ---------- 記録 ---------- */
.hist { display: flex; justify-content: space-between; padding: 9px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
.hist:last-child { border-bottom: 0; }
.hist__d { color: var(--fg-dim); }
.hist__v { font-variant-numeric: tabular-nums; }
.empty { color: var(--fg-dim); font-size: 14px; text-align: center; padding: 14px 0; }