/*
 * The component vocabulary. Every screen composes from these; a screen that
 * needs a new colour or radius adds a token, never a literal.
 */

/* ---- buttons ---------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 34px; padding: 0 12px;
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--panel); color: var(--text-2);
  font-size: 12.5px; cursor: pointer;
  box-shadow: var(--shadow);
  transition: background .16s, color .16s, border-color .16s, filter .16s, transform .12s;
}
.btn:hover { background: var(--panel-2); color: var(--text); text-decoration: none; }
.btn:active { transform: scale(.97); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn[disabled] { opacity: .5; cursor: not-allowed; transform: none; }

.btn-accent { background: var(--accent); border-color: var(--accent); color: var(--on-accent); font-weight: 500; }
.btn-accent:hover { filter: brightness(1.08); background: var(--accent); color: var(--on-accent); }
.btn-ghost { background: transparent; border-color: transparent; box-shadow: none; }
.btn-ghost:hover { background: var(--panel-3); }
.btn-danger { color: var(--bad); }
.btn-danger:hover { background: var(--bad-soft); color: var(--bad); }
.btn-dashed { border-style: dashed; border-color: var(--border-2); background: transparent; box-shadow: none; }
.btn-sm { height: 28px; padding: 0 10px; font-size: 12px; }
.btn-icon { width: 28px; height: 28px; padding: 0; }
.btn-block { width: 100%; }

/* ---- cards ------------------------------------------------------------- */
.card {
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.card-accent { border-left: 3px solid var(--accent); }

.card-header {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 15px 18px;
  border-bottom: 1px solid var(--border);
}

.card-title { font-size: 14px; font-weight: 500; }
.card-sub { font-size: 12px; color: var(--text-3); }
.card-body { padding: 18px; }
.card-body-flush { padding: 0; }
.card-foot {
  padding: 12px 16px 14px;
  border-top: 1px solid var(--border);
  background: var(--panel-2);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.section-num {
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  border-radius: 7px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
}

/* ---- fields ------------------------------------------------------------ */
.field { display: block; }

/* The field is the tooltip's positioning context, so the tip can sit above the
   label without the control's own box growing. */
.field { position: relative; }

.field-label {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-bottom: 6px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-2);
}

/* Decorative. The description reaches assistive tech through the widget's own
   aria-describedby, which points at .field-tip. */
.field-info {
  display: inline-grid;
  place-items: center;
  color: var(--text-3);
  cursor: help;
}

.field-info:hover { color: var(--text-2); }

/*
 * Hidden by default but never removed from the layout-independent flow: it is
 * absolutely positioned, so showing it cannot shift a single control. That is
 * the whole point — a hint that changes a field's height breaks row alignment.
 */
.field-tip {
  position: absolute;
  left: 0;
  bottom: calc(100% - 2px);
  z-index: 40;
  max-width: 260px;
  width: max-content;
  padding: 7px 9px;
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow-pop);
  font-size: 11.5px;
  font-weight: 400;
  line-height: 1.45;
  color: var(--text-2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(3px);
  transition: opacity .14s ease, transform .14s ease, visibility .14s;
  pointer-events: none;
}

/* Mouse users hover the icon; keyboard users get it just by tabbing into the
   control, so no field needs an extra tab stop. */
.field:hover .field-tip,
.field:focus-within .field-tip {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.field-hint { margin-top: 6px; font-size: 11px; color: var(--text-3); }

.field-error {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 6px;
  font-size: 11.5px;
  color: var(--bad);
}

.input, .select, .textarea {
  width: 100%;
  height: 36px;
  padding: 0 10px;
  border: 1px solid var(--border-2);
  border-radius: 10px;
  background: var(--panel);
  color: var(--text);
  font-size: 12.5px;
  outline: 0;
  transition: border-color .16s, box-shadow .16s;
}

.textarea { height: auto; min-height: 36px; padding: 8px 10px; resize: vertical; line-height: 1.45; }

.input:focus, .select:focus, .textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.input::placeholder, .textarea::placeholder { color: var(--text-3); }
.input[disabled], .select[disabled], .textarea[disabled] { opacity: .55; cursor: not-allowed; }

.select {
  appearance: none;
  padding-right: 28px;
  background-image: linear-gradient(45deg, transparent 50%, currentColor 50%),
                    linear-gradient(135deg, currentColor 50%, transparent 50%);
  background-position: calc(100% - 15px) calc(50% + 1px), calc(100% - 10px) calc(50% + 1px);
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}

.input-sm, .select-sm { height: 30px; font-size: 12px; border-radius: 8px; }
.input-mono { font-family: var(--font-mono); }
.input-invalid { border-color: var(--bad); }
.input-upper { text-transform: uppercase; }

.checkbox {
  width: 15px;
  height: 15px;
  margin: 0;
  accent-color: var(--accent);
  cursor: pointer;
}

.check-label { display: inline-flex; align-items: center; gap: 8px; font-size: 12.5px; cursor: pointer; }

/* A group of checkboxes rendered by Django's own CheckboxSelectMultiple: a
   wrapping <div>, one <div> per choice, each holding <label><input> Text.
   Styled here rather than in a screen because any form with a multi-select
   group wants exactly this, and screens.css may not define vocabulary
   (Rule 5). Descendant selectors, not child ones — Django groups optgroup-
   style choices one level deeper. */
.check-list div { min-width: 0; }
.check-list label {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  font-size: 13px;
  line-height: 1.45;
  cursor: pointer;
  padding: 3px 0;
}
.check-list input[type="checkbox"] {
  flex: none;
  width: 15px;
  height: 15px;
  margin: 2px 0 0;
  accent-color: var(--accent);
  cursor: pointer;
}

/* ---- badges ------------------------------------------------------------ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 22px;
  padding: 0 8px;
  border-radius: 7px;
  font-size: 11.5px;
  font-weight: 500;
  white-space: nowrap;
}

.badge::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
}

.badge-ok { background: var(--ok-soft); color: var(--ok); }
.badge-warn { background: var(--warn-soft); color: var(--warn); }
.badge-bad { background: var(--bad-soft); color: var(--bad); }
.badge-accent { background: var(--accent-soft); color: var(--accent); }
.badge-neutral { background: var(--neutral-soft); color: var(--neutral); }

/* ---- chips & stat labels ------------------------------------------------ */
/* Moved from screens.css: both are consumed by reusable partials
   (_airline_option.html, _totals.html), not by one screen. */
.avatar-chip {
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  border-radius: 6px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
}

.option-stat-label {
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--text-3);
}

/* ---- data grid --------------------------------------------------------- */
.data-grid { width: 100%; font-size: 12.5px; }

.data-grid-head th {
  height: 34px;
  padding: 0 12px;
  border-bottom: 1px solid var(--border);
  background: var(--panel-2);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--text-3);
  text-align: left;
  white-space: nowrap;
}

.data-grid-row { height: var(--rowh); border-bottom: 1px solid var(--border); }
.data-grid-row:hover { background: var(--panel-2); }
.data-grid-row > td { padding: 0 12px; vertical-align: middle; }
.data-grid-row-tall > td { padding: 8px 12px; }
.data-grid tbody tr:last-child { border-bottom: 0; }

.data-grid-foot td, .data-grid-foot th {
  height: 38px;
  padding: 0 12px;
  border-top: 1px solid var(--border);
  background: var(--panel-2);
  font-weight: 500;
  text-align: left;
}

.data-grid-row-best { background: var(--ok-soft); }
.data-grid-row-best:hover { background: var(--ok-soft); }

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  text-align: right;
}

th.num, td.num { text-align: right; }

.scroll-x { overflow-x: auto; }

/* ---- popover ----------------------------------------------------------- */
.popover {
  position: absolute;
  z-index: 30;
  border: 1px solid var(--border-2);
  background: var(--panel);
  border-radius: 12px;
  box-shadow: var(--shadow-pop);
  padding: 6px;
  animation: popIn .16s cubic-bezier(.2, .8, .2, 1) both;
}

.popover-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  height: 32px;
  padding: 0 9px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--text-2);
  font-size: 12.5px;
  text-align: left;
  cursor: pointer;
}
.popover-item:hover, .popover-item[aria-selected="true"] {
  background: var(--accent-soft);
  color: var(--accent);
  text-decoration: none;
}

/* Keyboard-navigated airport typeahead result (see airport.js). */
.popover-item.is-active { background: var(--accent-soft); }

/* Command palette: the trigger is a .btn, the overlay is the only bit of
   positioning the .popover cannot supply on its own. */
.palette-trigger { width: 268px; justify-content: flex-start; color: var(--text-3); }
.palette-trigger:hover { color: var(--text-2); }

.palette-overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  justify-content: center;
  padding-top: 14vh;
  background: var(--scrim);
  animation: fadeIn .14s both;
}

.palette-panel { position: relative; width: min(520px, calc(100vw - 32px)); padding: 8px; }

/* ---- toasts ------------------------------------------------------------ */
.toast-host {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 60;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  min-width: 240px;
  max-width: 380px;
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--panel);
  box-shadow: var(--shadow-pop);
  font-size: 12.5px;
  animation: barUp .22s cubic-bezier(.2, .8, .2, 1) both;
}

/* ---- keyboard hints ---------------------------------------------------- */
.kbd {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  line-height: 1.5;
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1px 5px;
  color: var(--text-3);
  background: var(--panel-2);
  transition: opacity .16s;
}

/* ---- segmented control ------------------------------------------------- */
.segmented {
  display: flex;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  border-radius: 10px;
}

.segmented-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 26px;
  padding: 0 11px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--text-2);
  font-size: 12px;
  cursor: pointer;
  transition: background .16s, color .16s, box-shadow .16s;
}
.segmented-item:hover { color: var(--text); text-decoration: none; }

/* aria-pressed and aria-current are both valid "active" markers on a
   segmented item — pressed for a real <button role="button">, current for an
   <a> acting as an in-page anchor (the builder's section pills). */
.segmented-item[aria-pressed="true"],
.segmented-item[aria-current="true"] {
  background: var(--panel);
  box-shadow: var(--shadow);
  color: var(--text);
}

/* ---- timeline ---------------------------------------------------------- */
.timeline { position: relative; display: flex; flex-direction: column; gap: 16px; }

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 10px;
  font-size: 12.5px;
}

.timeline-dot {
  position: relative;
  z-index: 1;
  width: 9px;
  height: 9px;
  margin: 5px 0 0 4px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.timeline-line {
  position: absolute;
  left: 8px;
  top: 4px;
  bottom: 4px;
  width: 1px;
  background: var(--border-2);
}

/* ---- alerts ------------------------------------------------------------ */
.alert {
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 12.5px;
}

.alert-ok { background: var(--ok-soft); color: var(--ok); }
.alert-warn { background: var(--warn-soft); color: var(--warn); }
.alert-bad { background: var(--bad-soft); color: var(--bad); }
/* Tones for the remaining Django message levels (see the `message_tone` filter). */
.alert-accent { background: var(--accent-soft); color: var(--accent); }
.alert-neutral { background: var(--neutral-soft); color: var(--neutral); }
.alert ul { list-style: none; }

/* ---- skeleton ---------------------------------------------------------- */
.skeleton {
  border-radius: var(--radius-sm);
  background: linear-gradient(
    90deg,
    var(--panel-2) 0%,
    var(--panel-3) 40%,
    var(--panel-2) 80%
  );
  background-size: 420px 100%;
  animation: shimmer 1.3s linear infinite;
}

/* ---- grid utilities ------------------------------------------------------ */
.grid-12 { display: grid; grid-template-columns: repeat(12, 1fr); gap: var(--gap, 14px); }
.col-1{grid-column:span 1}.col-2{grid-column:span 2}.col-3{grid-column:span 3}
.col-4{grid-column:span 4}.col-5{grid-column:span 5}.col-6{grid-column:span 6}
.col-7{grid-column:span 7}.col-8{grid-column:span 8}.col-9{grid-column:span 9}
.col-10{grid-column:span 10}.col-11{grid-column:span 11}.col-12{grid-column:span 12}

/* ---- layout utilities -------------------------------------------------- */
.stack { display: flex; flex-direction: column; gap: var(--gap, 12px); }
.row { display: flex; align-items: center; gap: var(--gap, 10px); }
.spacer { flex: 1; }
.mono { font-family: var(--font-mono); }
.muted { color: var(--text-2); }
.dim { color: var(--text-3); }
.bad { color: var(--bad); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---- narrow viewports --------------------------------------------------- */
/*
 * Two steps, because a 12-column field grid does not go straight from three
 * fields abreast to one: a tablet still has room for two. `.col-6` and wider
 * are already halves or better, so only the narrower spans are widened at the
 * first step — a `.col-12` must never become a half.
 */
@media (max-width: 900px) {
  .col-1, .col-2, .col-3, .col-4, .col-5 { grid-column: span 6; }
  .col-7, .col-8, .col-9, .col-10, .col-11 { grid-column: span 12; }
}

@media (max-width: 620px) {
  .col-1, .col-2, .col-3, .col-4, .col-5, .col-6 { grid-column: span 12; }
}

@media (max-width: 860px) {
  /* A toolbar is a `.row`: a search box, a filter and two buttons that fit
     side by side on a desk and cannot on a phone. Wrapping only takes effect
     where the row would otherwise overflow, so nothing above this width
     moves. */
  .row { flex-wrap: wrap; }

  /* The palette is a keyboard affordance — its trigger says "⌘K" — and it is
     268px of a 390px topbar. The drawer is the navigation on a phone. */
  .palette-trigger { display: none; }

  /* Corner-pinned toasts, given the width they need at 390px. */
  .toast-host { right: 12px; left: 12px; bottom: 12px; }
  .toast { min-width: 0; max-width: none; }

  /* A card footer holding two or three buttons: side by side they overflow,
     and a half-visible Cancel is worse than a stacked one. */
  .card-foot.row { flex-wrap: wrap; }
}