/* ---- meet — timezone-aware scheduling ---- */
:root {
  color-scheme: light dark;
  --bg: #f7f8f9;
  --surface: #ffffff;
  --surface-2: #f1f3f5;
  --border: #dfe3e8;
  --border-strong: #c3cad3;
  --text: #14181d;
  --muted: #667085;
  --accent: #0d9488;
  --accent-text: #ffffff;
  --accent-soft: #d6f4ef;
  --ok: #0f9d58;
  --warn: #b45309;
  --danger: #c0392b;
  --shadow: 0 1px 2px rgba(16,24,40,.06), 0 8px 24px -12px rgba(16,24,40,.18);
  --radius: 12px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c0e11;
    --surface: #14171c;
    --surface-2: #1a1e24;
    --border: #252a32;
    --border-strong: #39414c;
    --text: #e8ebf0;
    --muted: #8f98a6;
    --accent: #2dd4bf;
    --accent-text: #06231f;
    --accent-soft: #10322e;
    --ok: #4ade80;
    --warn: #fbbf24;
    --danger: #f87171;
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 12px 32px -16px rgba(0,0,0,.7);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, Inter, sans-serif;
  padding: 0 0 6rem;
}
a { color: var(--accent); }

.wrap { max-width: 860px; margin: 0 auto; padding: 0 1.15rem; }
.wrap.narrow { max-width: 620px; }

header.top {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  padding: .85rem 0;
  margin-bottom: 2rem;
}
header.top .wrap { display: flex; align-items: center; gap: .7rem; }
.brand {
  font-weight: 650; letter-spacing: -.02em; font-size: 1.05rem;
  color: var(--text); text-decoration: none; display: flex; align-items: center; gap: .5rem;
}
.brand .dot {
  width: 9px; height: 9px; border-radius: 50%; background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}
.brand small { color: var(--muted); font-weight: 400; font-size: .82rem; letter-spacing: 0; }

h1 { font-size: 1.75rem; letter-spacing: -.025em; margin: 0 0 .4rem; line-height: 1.2; }
h2 { font-size: 1.05rem; letter-spacing: -.01em; margin: 0 0 .9rem; }
.lede { color: var(--muted); margin: 0 0 1.75rem; }

.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.25rem; margin-bottom: 1.1rem; box-shadow: var(--shadow);
}
.card > h2:first-child { margin-top: 0; }

label { display: block; font-weight: 550; font-size: .85rem; margin-bottom: .35rem; }
label .hint { font-weight: 400; color: var(--muted); }
input, select, textarea, button { font: inherit; color: inherit; }
input[type=text], input[type=email], input[type=number], input[type=date],
input[type=time], input[type=datetime-local], select, textarea {
  width: 100%; padding: .55rem .7rem; border-radius: 9px;
  border: 1px solid var(--border-strong); background: var(--surface-2); color: var(--text);
}
input:focus-visible, select:focus-visible, textarea:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 1px;
}
textarea { resize: vertical; min-height: 74px; }
.field { margin-bottom: 1rem; }
.row { display: flex; gap: .7rem; flex-wrap: wrap; }
.row > * { flex: 1 1 12rem; min-width: 0; }

button {
  border: 1px solid var(--border-strong); background: var(--surface-2);
  padding: .55rem .95rem; border-radius: 9px; cursor: pointer; font-weight: 550;
}
button:hover:not(:disabled) { border-color: var(--accent); }
button:disabled { opacity: .5; cursor: not-allowed; }
button.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
button.primary:hover:not(:disabled) { filter: brightness(1.08); }
button.ghost { background: transparent; border-color: var(--border); color: var(--muted); }
button.danger { color: var(--danger); border-color: var(--border); background: transparent; }
button.sm { padding: .3rem .6rem; font-size: .84rem; }
.actions { display: flex; gap: .6rem; align-items: center; flex-wrap: wrap; margin-top: 1.2rem; }

.muted { color: var(--muted); }
.small { font-size: .86rem; }
.mono { font-family: var(--mono); font-size: .88em; }
.err { color: var(--danger); }
.notice {
  border: 1px solid var(--border); background: var(--surface-2);
  border-left: 3px solid var(--accent); padding: .7rem .9rem; border-radius: 8px; margin: .8rem 0;
}
.notice.bad { border-left-color: var(--danger); }

/* ---- proposed-window list (organiser) ---- */
.slot-line {
  display: flex; align-items: center; gap: .6rem; padding: .55rem 0;
  border-bottom: 1px dashed var(--border);
}
.slot-line:last-child { border-bottom: 0; }
.slot-line .when { flex: 1; min-width: 0; }
.slot-line .when b { font-weight: 600; }
.slot-line .elsewhere { color: var(--muted); font-size: .82rem; }

/* ---- slot picker (responder) ---- */
.daygroup { margin-bottom: 1.4rem; }
.daygroup h3 {
  font-size: .78rem; text-transform: uppercase; letter-spacing: .07em; color: var(--muted);
  margin: 0 0 .55rem; font-weight: 650;
}
.slots { display: grid; gap: .55rem; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.slot {
  display: flex; flex-direction: column; align-items: flex-start; gap: .15rem;
  text-align: left; padding: .7rem .85rem; border-radius: 10px;
  border: 1px solid var(--border-strong); background: var(--surface);
}
.slot .t { font-weight: 600; font-size: 1rem; letter-spacing: -.01em; }
.slot .sub { color: var(--muted); font-size: .8rem; }
.slot[aria-pressed="true"] {
  border-color: var(--accent); background: var(--accent-soft);
  box-shadow: inset 0 0 0 1px var(--accent);
}
.slot.gone { opacity: .5; text-decoration: none; }
.slot.gone .t { text-decoration: line-through; }

.tzbar {
  display: flex; align-items: center; gap: .6rem; flex-wrap: wrap;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 10px; padding: .6rem .8rem; margin-bottom: 1.25rem;
}
.tzbar label { margin: 0; white-space: nowrap; }
.tzbar select { flex: 1 1 16rem; }
.tzbar .badge {
  font-family: var(--mono); font-size: .8rem; color: var(--muted);
  border: 1px solid var(--border); border-radius: 99px; padding: .12rem .55rem;
}

table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { text-align: left; padding: .5rem .6rem; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: .75rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
tr:last-child td { border-bottom: 0; }

.linkbox { display: flex; gap: .5rem; align-items: stretch; }
.linkbox input { font-family: var(--mono); font-size: .85rem; }

.pill {
  display: inline-block; font-size: .72rem; font-weight: 650; letter-spacing: .04em;
  text-transform: uppercase; padding: .12rem .5rem; border-radius: 99px;
  background: var(--surface-2); border: 1px solid var(--border); color: var(--muted);
}
.pill.ok { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 40%, transparent); }
.pill.gone { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 40%, transparent); }
.pill.filled { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }
.pill.open { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 40%, transparent); }

.empty { color: var(--muted); text-align: center; padding: 2rem 1rem; }
.spinner { color: var(--muted); padding: 2rem 0; text-align: center; }