:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --ink: #14181d;
  --ink-soft: #5c6673;
  --line: #dfe3e8;
  --accent: #1f6feb;
  --accent-ink: #ffffff;
  --free: #128a5b;
  --busy: #b3341c;
  --taken-bg: #eef1f4;
  --radius: 12px;
  --tap: 52px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1116;
    --card: #161b22;
    --ink: #e6edf3;
    --ink-soft: #9aa7b4;
    --line: #2a313a;
    --accent: #4d8bf5;
    --accent-ink: #08101c;
    --free: #3fbd8a;
    --busy: #f3775c;
    --taken-bg: #1c222b;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}

body { padding-bottom: env(safe-area-inset-bottom); }
body.has-sel main { padding-bottom: 104px; }

/* ---------------------------------------------------------------- header */

.bar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--card);
  border-bottom: 1px solid var(--line);
  padding-top: env(safe-area-inset-top);
}

.bar-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px 8px;
}

h1 {
  margin: 0;
  font-size: 19px;
  font-weight: 650;
  letter-spacing: -0.01em;
  flex: 1;
  min-width: 0;
}

.pill {
  flex: none;
  font-size: 13px;
  font-weight: 600;
  padding: 5px 11px;
  border-radius: 999px;
  white-space: nowrap;
}

.pill-free { background: color-mix(in srgb, var(--free) 16%, transparent); color: var(--free); }
.pill-busy { background: color-mix(in srgb, var(--busy) 16%, transparent); color: var(--busy); }
.pill-wait { background: var(--taken-bg); color: var(--ink-soft); }

.days {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  padding: 2px 16px 12px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.days::-webkit-scrollbar { display: none; }

.day {
  flex: none;
  scroll-snap-align: center;
  min-width: 68px;
  min-height: 54px;
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--ink);
  font: inherit;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  cursor: pointer;
}

.day-top { font-size: 14px; font-weight: 650; }
.day-bot { font-size: 12px; color: var(--ink-soft); }

.day-on {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}
.day-on .day-bot { color: var(--accent-ink); opacity: 0.85; }

/* ----------------------------------------------------------------- rooms */

.rooms { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }

.roomcard {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 72px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  color: var(--ink);
  text-decoration: none;
}

.roomcard > div { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.roomcard strong { font-size: 17px; font-weight: 650; }
.roomcard span:not(.pill) { font-size: 13px; color: var(--ink-soft); }

.back {
  flex: none;
  font-size: 22px;
  line-height: 1;
  text-decoration: none;
  color: var(--ink-soft);
  padding: 4px 6px 4px 0;
}

/* ------------------------------------------------------- the live booking */

.nowcard {
  display: grid;
  gap: 4px;
  margin-bottom: 16px;
  padding: 16px;
  border: 2px solid var(--accent);
  border-radius: var(--radius);
  background: var(--card);
}

.nowcard strong { font-size: 17px; }
.nowcard > span { font-size: 14px; color: var(--ink-soft); }
.nowcard .hint { margin: 2px 0 0; font-size: 13px; color: var(--ink-soft); }
.nowcard button { margin-top: 10px; }
.nowcard.urgent { border-color: var(--busy); }

/* ----------------------------------------------------------------- slots */

main { padding: 12px 16px 32px; max-width: 640px; margin: 0 auto; }

.slots { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }

.slot {
  width: 100%;
  min-height: var(--tap);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  color: var(--ink);
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.slot-time {
  flex: none;
  width: 52px;
  font-variant-numeric: tabular-nums;
  font-weight: 650;
  font-size: 15px;
}

.slot-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
  overflow: hidden;
}

.slot-body strong { font-size: 15px; font-weight: 600; }
.slot-why,
.slot-body > span { font-size: 13px; color: var(--ink-soft); }
.slot-body strong, .slot-why { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.slot-free .slot-body { color: var(--ink-soft); font-size: 14px; }

.slot-taken {
  background: var(--taken-bg);
  border-style: dashed;
  cursor: default;
}
.slot-taken .slot-time { color: var(--ink-soft); }

.slot-past { opacity: 0.4; cursor: default; }

.slot-on {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}
.slot-on .slot-body { color: var(--accent-ink); font-weight: 600; }

.slot:disabled { pointer-events: none; }

.empty {
  padding: 24px 12px;
  text-align: center;
  color: var(--ink-soft);
}

.foot { margin: 20px 4px 0; font-size: 13px; color: var(--ink-soft); }

/* ------------------------------------------------------------ my booking */

.mine { margin-top: 28px; }
.mine h2 { font-size: 15px; margin: 0 0 8px; color: var(--ink-soft); font-weight: 600; }
.mine ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }

.mine li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.mine li div { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.mine li strong { font-size: 15px; font-weight: 600; }
.mine li span { font-size: 13px; color: var(--ink-soft); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* --------------------------------------------------------- selection bar */

[hidden] { display: none !important; }

.selbar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
  background: var(--card);
  border-top: 1px solid var(--line);
  box-shadow: 0 -6px 20px rgba(0, 0, 0, 0.10);
}

.selbar-text { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.selbar-text strong { font-size: 16px; font-variant-numeric: tabular-nums; }
.selbar-text span { font-size: 13px; color: var(--ink-soft); }

button.primary,
button.ghost {
  min-height: 48px;
  padding: 0 18px;
  border-radius: 10px;
  font: inherit;
  font-weight: 650;
  cursor: pointer;
  flex: none;
}

button.primary { background: var(--accent); color: var(--accent-ink); border: 1px solid var(--accent); }
button.ghost { background: transparent; color: var(--ink-soft); border: 1px solid var(--line); }
button.small { min-height: 40px; padding: 0 14px; font-size: 14px; }
button:disabled { opacity: 0.55; cursor: default; }

/* ----------------------------------------------------------------- sheet */

.sheet {
  border: none;
  padding: 0;
  background: transparent;
  width: 100%;
  max-width: 640px;
  margin: auto auto 0;
}

.sheet::backdrop { background: rgba(0, 0, 0, 0.45); }

.sheet form {
  background: var(--card);
  color: var(--ink);
  border-radius: 16px 16px 0 0;
  padding: 20px 16px calc(20px + env(safe-area-inset-bottom));
  display: grid;
  gap: 8px;
}

.sheet h2 { margin: 0; font-size: 18px; }
.sheet .when { margin: 0 0 6px; color: var(--ink-soft); font-size: 14px; }

.sheet label { font-size: 13px; font-weight: 600; color: var(--ink-soft); margin-top: 6px; }
.sheet .hint { margin: 4px 0 0; font-size: 12px; color: var(--ink-soft); }

.sheet input {
  width: 100%;
  min-height: 50px;
  padding: 0 14px;
  font: inherit;
  font-size: 16px;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
}

.sheet input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

.sheet-buttons { display: flex; gap: 10px; margin-top: 14px; }
.sheet-buttons button { flex: 1; }

.error { margin: 8px 0 0; color: var(--busy); font-size: 14px; }
.fatal { padding: 24px 4px; color: var(--busy); }

/* ----------------------------------------------------------------- toast */

.toast {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: calc(96px + env(safe-area-inset-bottom));
  z-index: 40;
  margin: 0 auto;
  max-width: 480px;
  padding: 12px 16px;
  border-radius: 10px;
  background: var(--ink);
  color: var(--bg);
  font-size: 14px;
  text-align: center;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.25);
}

.toast-bad { background: var(--busy); color: #fff; }