/* planner.css - the view tabs, the meeting planner grid and the zone browser.
   Third stylesheet only because each file is held under the ~300 line ceiling; it uses
   the same tokens and declares no colour literal of its own. */

/* ---------- view tabs ---------- */

.tabs {
  /* The top margin is load-bearing: without it the tab strip sits flush against the
     search box and the two read as one control. */
  max-width: 1180px; margin: var(--s3) auto 0;
  display: flex; gap: 2px; padding: 2px;
  border: 1px solid var(--border); border-radius: var(--r-md);
  background: var(--surface-2); width: fit-content;
}
.tabs__link {
  padding: var(--s1) var(--s4); border-radius: 9px;
  font-size: .86rem; font-weight: 500; text-decoration: none; color: var(--text-muted);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.tabs__link:hover { color: var(--text); }
.tabs__link[aria-current="page"] {
  background: var(--accent); color: var(--accent-text); font-weight: 700;
}

/* ---------- shared view chrome ---------- */

.view { display: flex; flex-direction: column; gap: var(--s4); }
.view__title {
  margin: 0; font-family: var(--font-display); font-size: 1.4rem;
  font-weight: 700; letter-spacing: -.02em;
}
/* These headings are focused programmatically after a route change so a screen
   reader announces the new view. They are not in the tab order, so a ring here
   signals nothing to a keyboard user and reads as a text input to everyone else. */
.view__title:focus { outline: none; }
.view__lede { margin: calc(var(--s3) * -1) 0 0; max-width: 62ch; color: var(--text-muted); font-size: .9rem; }

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

.planner__controls {
  display: flex; flex-wrap: wrap; align-items: flex-end; gap: var(--s3);
  padding: var(--s4); border: 1px solid var(--border); border-radius: var(--r-md);
  background: var(--surface-solid);
}
.field { display: flex; flex-direction: column; gap: var(--s1); }
.field__label {
  font-size: .72rem; font-weight: 700; letter-spacing: .04em;
  text-transform: uppercase; color: var(--text-muted);
}
.field__input {
  padding: var(--s2) var(--s3); font: inherit; font-size: .9rem; color: var(--text);
  border: 1px solid var(--border); border-radius: var(--r-sm); background: var(--surface-2);
}
.field__input:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px var(--accent-soft); }
.btn--quiet {
  background: var(--surface-2); color: var(--text); border-color: var(--border); font-weight: 500;
}
.btn--quiet:hover { background: var(--surface); border-color: var(--border-strong); }

/* ---------- the hour grid ---------- */

.grid__scroll {
  overflow-x: auto; border: 1px solid var(--border);
  border-radius: var(--r-md); background: var(--surface-solid);
}
.grid__scroll:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

.grid { border-collapse: collapse; width: 100%; font-variant-numeric: tabular-nums; }
.grid__caption {
  padding: var(--s3) var(--s4); text-align: left;
  font-size: .84rem; color: var(--text-muted); border-bottom: 1px solid var(--border);
}
.grid__corner, .grid__city {
  position: sticky; left: 0; z-index: 2;
  min-width: 190px; padding: var(--s2) var(--s3); text-align: left;
  background: var(--surface-solid); border-right: 1px solid var(--border);
}
.grid__corner { font-size: .72rem; letter-spacing: .04em; text-transform: uppercase; color: var(--text-muted); }
.grid__hour {
  width: 34px; padding: var(--s1) 0; font-size: .7rem; font-weight: 500;
  color: var(--text-faint); text-align: center;
}
.grid tbody tr + tr .grid__city, .grid tbody tr + tr .cell { border-top: 1px solid var(--border); }

.grid__city { font-weight: 400; }
.grid__city-name { display: block; font-weight: 700; font-size: .92rem; }
.grid__city-time { display: block; font-size: .82rem; color: var(--text); }
.grid__city-meta { display: block; font-size: .74rem; color: var(--text-muted); }
.grid__day {
  margin-left: var(--s1); padding: 0 var(--s1); border-radius: var(--r-pill);
  font-size: .7rem; font-weight: 700;
  background: var(--warn-soft); color: var(--warn);
}

.cell {
  width: 34px; padding: var(--s2) 0; text-align: center;
  font-size: .78rem; font-weight: 500;
}
.cell--night   { background: var(--band-night-bg);   color: var(--band-night-fg); }
.cell--morning { background: var(--band-morning-bg); color: var(--band-morning-fg); }
.cell--work    { background: var(--band-work-bg);    color: var(--band-work-fg); font-weight: 700; }
.cell--evening { background: var(--band-evening-bg); color: var(--band-evening-fg); }
/* A zone whose offset is not a whole hour - the number shown is the hour it starts in. */
.cell--offbeat { font-style: italic; }

.legend { display: flex; flex-wrap: wrap; gap: var(--s4); margin: 0; padding: 0; list-style: none; }
.legend__item { display: flex; align-items: center; gap: var(--s2); font-size: .8rem; color: var(--text-muted); }
.legend__swatch { width: 16px; height: 16px; border-radius: 4px; border: 1px solid var(--border); }
.legend__swatch--night   { background: var(--band-night-bg); }
.legend__swatch--morning { background: var(--band-morning-bg); }
.legend__swatch--work    { background: var(--band-work-bg); }
.legend__swatch--evening { background: var(--band-evening-bg); }

/* ---------- zone browser ---------- */

.zones { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 2px; }
.zone { border: 1px solid var(--border); border-radius: var(--r-sm); background: var(--surface-solid); }
.zone.is-open { border-color: var(--border-strong); }

.zone__toggle {
  display: flex; align-items: center; gap: var(--s3); width: 100%;
  padding: var(--s2) var(--s3); font: inherit; text-align: left;
  border: 0; border-radius: var(--r-sm); background: none; color: var(--text); cursor: pointer;
}
.zone__toggle:hover { background: var(--surface-2); }
.zone__chevron { display: grid; place-items: center; width: 16px; height: 16px; color: var(--text-faint); }
.zone__chevron svg { width: 100%; height: 100%; transition: transform var(--dur) var(--ease); }
.zone.is-open .zone__chevron svg { transform: rotate(90deg); }
.zone__name { flex: 1 1 auto; font-size: .9rem; overflow-wrap: anywhere; }
.zone__offset { font-variant-numeric: tabular-nums; font-size: .82rem; font-weight: 700; color: var(--accent); }
.zone__count { min-width: 74px; text-align: right; font-size: .76rem; color: var(--text-faint); }

.zone__cities {
  margin: 0; padding: var(--s2) var(--s3) var(--s3) var(--s6);
  list-style: none; display: flex; flex-wrap: wrap; gap: var(--s1) var(--s3);
  border-top: 1px solid var(--border);
}
/* display:flex beats the user agent's [hidden] { display: none }, so a collapsed group
   would stay on screen with aria-expanded="false" lying about it. */
.zone__cities[hidden] { display: none; }
.zone__city { display: inline-flex; align-items: center; gap: var(--s1); font-size: .86rem; text-decoration: none; }
.zone__city:hover { text-decoration: underline; }
.zone__flag { font-size: .95rem; }

@media (max-width: 560px) {
  .tabs { width: 100%; }
  .tabs__link { flex: 1 1 0; text-align: center; padding: var(--s1) var(--s2); }
  .planner__controls { padding: var(--s3); gap: var(--s2); }
  .field { flex: 1 1 140px; }
  .grid__corner, .grid__city { min-width: 150px; }
  .zone__count { display: none; }
}