:root {
  --bg: #f6f5f2;
  --surface: #ffffff;
  --surface-2: #f0eee9;
  --text: #22201c;
  --muted: #6d685f;
  --border: #e2ded6;
  --accent: #2f6f5e;
  --accent-text: #ffffff;
  --pending: #c98a12;
  --pending-bg: #fdf3dc;
  --approved: #2f6f5e;
  --approved-bg: #e1f0ea;
  --mine: #3b5bb5;
  --mine-bg: #e4eafb;
  --danger: #b4382f;
  --danger-bg: #fbe7e5;
  --radius: 10px;
  --shadow: 0 1px 2px rgb(0 0 0 / .05), 0 4px 16px rgb(0 0 0 / .06);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #171614;
    --surface: #211f1c;
    --surface-2: #2a2824;
    --text: #ece9e3;
    --muted: #a39d92;
    --border: #3a3732;
    --accent: #5fb39a;
    --accent-text: #0f1a16;
    --pending: #e5ac3c;
    --pending-bg: #3a2f17;
    --approved: #5fb39a;
    --approved-bg: #1c3029;
    --mine: #8aa5f0;
    --mine-bg: #222c48;
    --danger: #ec7b70;
    --danger-bg: #3d1f1c;
    --shadow: 0 1px 2px rgb(0 0 0 / .3), 0 4px 16px rgb(0 0 0 / .3);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

h1, h2, h3 { line-height: 1.2; margin: 0; }
h1 { font-size: 1.6rem; }
h2 { font-size: 1.25rem; }
h3 { font-size: 1.1rem; }
.muted { color: var(--muted); }

/* ---------- controls ---------- */

.btn {
  font: inherit;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 8px;
  padding: .5rem .9rem;
  cursor: pointer;
}
.btn:hover { background: var(--surface-2); }
.btn:disabled { opacity: .6; cursor: default; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); font-weight: 600; }
.btn.primary:hover { filter: brightness(1.07); }
.btn.danger { background: var(--danger); border-color: var(--danger); color: #fff; font-weight: 600; }
.btn.ghost { background: transparent; }
.btn.small { padding: .3rem .65rem; font-size: .9rem; }

input, textarea {
  font: inherit;
  width: 100%;
  margin-top: .25rem;
  padding: .55rem .7rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
}
input:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
textarea { resize: vertical; }
label { display: block; font-weight: 500; }
label small { display: block; font-weight: 400; margin-top: .2rem; }

.stack > * + * { margin-top: 1rem; }
.actions { display: flex; gap: .5rem; justify-content: flex-end; flex-wrap: wrap; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.tabs { display: flex; gap: .25rem; }
.tab {
  font: inherit;
  background: none;
  border: none;
  color: var(--muted);
  padding: .45rem .8rem;
  border-radius: 8px;
  cursor: pointer;
}
.tab:hover { color: var(--text); background: var(--surface-2); }
.tab.active { color: var(--text); background: var(--surface-2); font-weight: 600; }

.badge {
  display: inline-block;
  min-width: 1.4em;
  padding: 0 .4em;
  border-radius: 999px;
  background: var(--pending);
  color: #fff;
  font-size: .75rem;
  font-weight: 700;
  text-align: center;
}

.notice { padding: .6rem .8rem; border-radius: 8px; background: var(--approved-bg); }
.notice.error { background: var(--danger-bg); color: var(--danger); }

#toast {
  position: fixed;
  left: 50%;
  bottom: 1.5rem;
  transform: translateX(-50%);
  z-index: 100;
  max-width: calc(100% - 2rem);
  padding: .65rem 1rem;
  border-radius: 8px;
  background: var(--text);
  color: var(--bg);
  box-shadow: var(--shadow);
}
#toast.error { background: var(--danger); color: #fff; }

/* ---------- auth ---------- */

.auth { min-height: 100vh; display: grid; place-items: center; padding: 1rem; }
.auth-card { width: 100%; max-width: 400px; padding: 2rem; }
.auth-card > * + * { margin-top: 1rem; }
.auth-card .tabs { border-bottom: 1px solid var(--border); padding-bottom: .5rem; }
.btn.google {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .6rem;
  width: 100%;
  font-weight: 500;
  text-decoration: none;
}
.divider {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-top: 1rem;
  color: var(--muted);
  font-size: .85rem;
}
.divider::before, .divider::after { content: ''; flex: 1; border-top: 1px solid var(--border); }

/* ---------- layout ---------- */

.topbar {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  padding: .75rem 1rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.topbar .tabs { flex: 1; }
.user { display: flex; align-items: center; gap: .5rem; }

.content { max-width: 1000px; margin: 0 auto; padding: 1.5rem 1rem 3rem; }
.content h2 + .list { margin-top: .75rem; }
.content .list + h2 { margin-top: 2rem; }

/* ---------- calendar ---------- */

.cal-head { display: flex; align-items: center; gap: .5rem; }
.cal-head h2 { min-width: 11ch; text-align: center; }
.cal-head #today-btn { margin-left: auto; }

.legend { display: flex; gap: 1rem; flex-wrap: wrap; margin: .75rem 0; color: var(--muted); font-size: .85rem; }
.legend span { display: inline-flex; align-items: center; gap: .35rem; }
.dot { width: .7rem; height: .7rem; border-radius: 3px; display: inline-block; border: 1px solid var(--border); }
.dot.free { background: var(--surface); }
.dot.pending { background: var(--pending-bg); border-color: var(--pending); }
.dot.approved { background: var(--approved-bg); border-color: var(--approved); }
.dot.mine { background: var(--mine-bg); border-color: var(--mine); }
.dot.blocked, .day.blocked {
  background: repeating-linear-gradient(-45deg, var(--surface-2) 0 6px, transparent 6px 12px);
  border-color: var(--muted);
}

.calendar {
  display: grid;
  grid-template-columns: repeat(5, 1fr) repeat(2, .55fr);
  gap: 4px;
}
.dow { font-size: .8rem; color: var(--muted); text-align: center; padding: .25rem 0; font-weight: 600; }

.day {
  font: inherit;
  text-align: left;
  min-height: 92px;
  padding: .4rem .45rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  display: flex;
  flex-direction: column;
  gap: .3rem;
  overflow: hidden;
}
.day .num { font-weight: 600; font-size: .9rem; }
.day.outside { visibility: hidden; }
.day.disabled { background: transparent; color: var(--muted); border-style: dashed; }
.day.clickable { cursor: pointer; }
.day.clickable:hover { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.day.today .num {
  background: var(--accent);
  color: var(--accent-text);
  border-radius: 999px;
  padding: 0 .45em;
  align-self: flex-start;
}
.day.pending { background: var(--pending-bg); border-color: var(--pending); }
.day.approved { background: var(--approved-bg); border-color: var(--approved); }
.day.mine { background: var(--mine-bg); border-color: var(--mine); }

.chip { font-size: .75rem; line-height: 1.3; overflow: hidden; text-overflow: ellipsis; }
.chip b { display: block; }

.hint { font-size: .85rem; margin-top: .75rem; }

/* ---------- lists ---------- */

.list { display: grid; gap: .6rem; }
.item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  padding: .9rem 1rem;
}
.item .main { flex: 1 1 260px; min-width: 0; }
.item .main > * + * { margin-top: .25rem; }
.item .date { font-weight: 600; }
.item .desc { white-space: pre-wrap; overflow-wrap: anywhere; }
.item .reason { color: var(--danger); white-space: pre-wrap; overflow-wrap: anywhere; }
.empty { color: var(--muted); padding: 1rem 0; }
.block-new { display: flex; gap: .5rem; align-items: center; margin-bottom: .6rem; }
.block-new input { width: auto; margin-top: 0; padding: .3rem .5rem; }

.status {
  display: inline-block;
  font-size: .75rem;
  font-weight: 600;
  padding: .1rem .5rem;
  border-radius: 999px;
}
.status.pending { background: var(--pending-bg); color: var(--pending); }
.status.approved { background: var(--approved-bg); color: var(--approved); }
.status.rejected { background: var(--danger-bg); color: var(--danger); }
.status.withdrawn, .status.blocked { background: var(--surface-2); color: var(--muted); }

/* ---------- dialogs ---------- */

dialog {
  width: min(440px, calc(100% - 2rem));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow);
  padding: 1.5rem;
}
dialog::backdrop { background: rgb(0 0 0 / .4); }
.date-big { font-size: 1.05rem; font-weight: 600; }
#details-body > * + * { margin-top: .4rem; }

/* ---------- small screens ---------- */

@media (max-width: 640px) {
  .topbar { gap: .5rem; }
  .topbar .tabs { order: 3; flex-basis: 100%; overflow-x: auto; }
  .user { margin-left: auto; }
  .calendar { grid-template-columns: repeat(5, 1fr) repeat(2, .4fr); gap: 2px; }
  .day { min-height: 64px; padding: .25rem; }
  .day .chip { font-size: .65rem; }
  .day .chip span { display: none; }
}