/* ---------------------------------------------------------------------------
   components.css — buttons, badges, the settings sheet, the help overlay.
   Sizes are in rem, which grows with the viewport (see tokens.css), so touch
   targets stay comfortable on a phone and proportionate on a large display.
--------------------------------------------------------------------------- */

/* --- Badges ------------------------------------------------------------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

.badge--muted {
  background: transparent;
  color: var(--text-muted);
  font-weight: 500;
}

/* --- Buttons ------------------------------------------------------------ */

/* .btn sets its own `display` below, which — same trap .sheet[hidden] hit
   earlier — would otherwise outrank the UA stylesheet's [hidden] rule and
   leave a hidden button rendered anyway. Needed for the controls bar's
   responsive overflow: buttons main.js hides on narrow screens must actually
   disappear. */
.btn[hidden] {
  display: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 2.75rem; /* stays >= 44px at the root font-size floor */
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: background var(--quick) ease, border-color var(--quick) ease,
    color var(--quick) ease, transform var(--quick) ease;
}

.btn:hover {
  background: var(--surface-2);
}

.btn:active {
  transform: translateY(1px);
}

.btn:focus-visible {
  outline: 0.15rem solid var(--accent);
  outline-offset: 0.15rem;
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn:disabled:hover,
.btn:disabled:active {
  filter: none;
  transform: none;
}

.btn--primary {
  min-width: 8rem;
  border-color: transparent;
  background: var(--accent);
  color: var(--accent-contrast);
}

.btn--primary:hover {
  background: var(--accent);
  filter: brightness(1.08);
}

.btn--ghost {
  border-color: transparent;
  background: transparent;
  color: var(--text-muted);
}

.btn--ghost:hover {
  background: var(--surface-2);
  color: var(--text);
}

.btn--wide {
  flex: 1 1 12rem;
}

.btn[aria-pressed="true"] {
  border-color: var(--accent);
  color: var(--accent);
}

.btn__label {
  white-space: nowrap;
}

.icon {
  width: 1.15rem;
  height: 1.15rem;
  fill: currentColor;
  flex: none;
}

/* Outline style for icons built as simple diagonal-arrow strokes (the
   fullscreen enter/exit pair) rather than a filled silhouette — much easier
   to get an arrow's direction unambiguously right with a handful of line
   segments than with a filled outline. */
.icon--stroke {
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.iconbtn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border: 0;
  border-radius: var(--radius);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
}

.iconbtn:hover {
  background: var(--surface-2);
  color: var(--text);
}

/* Help/Settings/Fullscreen in the controls bar's side trays: a touch target
   matching .btn's, on the plain .iconbtn otherwise sized for a small sheet
   close button. */
.iconbtn--tray {
  width: 2.75rem;
  height: 2.75rem;
}

/* Narrower padding and a smaller shared floor for Start/Reset — applied to
   both alike (not just .btn--primary) so they stay the same width as each
   other at every size, not just above this breakpoint. Labels stay on:
   with only two buttons in the centre column now, there is room to spare
   even on a small phone. */
@media (max-width: 34rem) {
  .controls .btn {
    padding: 0.55rem 0.75rem;
  }

  .controls__center .btn {
    min-width: 5rem;
  }
}

/* --- Sheet (settings + help) -------------------------------------------- */

.sheet {
  position: absolute;
  right: calc(1rem + env(safe-area-inset-right));
  bottom: calc(4.75rem + env(safe-area-inset-bottom));
  z-index: 20;
  width: min(26rem, calc(100% - 2rem));
  max-height: min(80vh, 44rem);
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-elev);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.sheet--center {
  right: 50%;
  bottom: 50%;
  transform: translate(50%, 50%);
}

.sheet[hidden] {
  display: none;
}

.sheet__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap);
  padding: 0.85rem 0.85rem 0.6rem 1.1rem;
  border-bottom: 1px solid var(--border);
}

.sheet__title {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
}

.sheet__body {
  padding: 0.5rem 1.1rem 1.1rem;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  /* A thin, themed scrollbar rather than none at all — with settings long
     enough to scroll, hiding it entirely left no hint that anything sat
     below the fold. */
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.sheet__body::-webkit-scrollbar {
  width: 0.5rem;
}

.sheet__body::-webkit-scrollbar-track {
  background: transparent;
}

.sheet__body::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 999px;
}

/* On a phone the sheet becomes a bottom sheet across the full width. */
@media (max-width: 34rem) {
  .sheet,
  .sheet--center {
    right: 0;
    left: 0;
    bottom: 0;
    width: 100%;
    max-height: 85dvh;
    transform: none;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    border-bottom: 0;
  }
}

/* --- Groups and fields -------------------------------------------------- */

.group {
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--border);
}

.group:last-child {
  border-bottom: 0;
  padding-bottom: 0.2rem;
}

.group__title {
  margin: 0 0 0.55rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.group__hint {
  margin: -0.3rem 0 0.6rem;
  font-size: 0.82rem;
  line-height: 1.45;
  color: var(--text-muted);
}

.group[hidden] {
  display: none;
}

.segmented {
  display: flex;
  gap: 0.25rem;
  padding: 0.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-2);
}

.segmented__opt {
  flex: 1 1 0;
  min-height: 2.3rem;
  padding: 0.45rem 0.5rem;
  border: 0;
  border-radius: calc(var(--radius) - 0.25rem);
  background: transparent;
  color: var(--text-muted);
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--quick) ease, color var(--quick) ease;
}

.segmented__opt[aria-checked="true"] {
  background: var(--bg-elev);
  color: var(--text);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.18);
}

/* The mode toggle lives in the topbar, not the settings sheet, so it needs
   to be sized against .btn rather than fill a 26rem-wide panel — and a
   little clearance above it, rather than sitting flush against the very
   top edge like the corner icons either side of it. js/main.js sets its
   width to match the Start/Reset row below (see centerStage), so this
   min-width is only the pre-JS/fallback floor. */
.segmented--mode {
  min-width: 12rem;
  margin-top: 0.5rem;
}

/* Only the topbar's mode toggle gets an icon (to read like Start/Reset) —
   Hide/Theme in Settings stay plain text, so this stays scoped rather than
   living on the shared .segmented__opt base. */
.segmented--mode .segmented__opt {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
}

/* Countdown vs stopwatch is the one segmented control worth calling out from
   across the room — a solid accent fill reads at a glance, where the plain
   "lighter panel" treatment other segmented controls use does not. */
.segmented--mode .segmented__opt[aria-checked="true"] {
  background: var(--accent);
  color: var(--accent-contrast);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.18);
}

@media (max-width: 34rem) {
  .segmented--mode {
    min-width: 9rem;
  }

  .segmented--mode .segmented__opt {
    padding: 0.45rem 0.3rem;
    font-size: 0.78rem;
  }
}

/* A tighter squeeze specifically for small phones, layered on top of the
   34rem sizing above, rather than loosening that breakpoint everywhere. */
@media (max-width: 24rem) {
  .controls {
    gap: 0.3rem;
  }

  .controls .btn {
    padding: 0.5rem 0.5rem;
  }

  .controls__center .btn {
    min-width: 4.2rem;
  }

  .segmented--mode {
    min-width: 6.8rem;
  }

  .segmented--mode .segmented__opt {
    padding: 0.4rem 0.1rem;
    font-size: 0.62rem;
  }
}

.segmented__opt:focus-visible {
  outline: 0.15rem solid var(--accent);
  outline-offset: -0.15rem;
}

.timefields {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.field--row {
  flex-direction: row;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.6rem;
}

.field__label {
  font-size: 0.82rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.field__unit {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.input {
  width: 100%;
  min-height: 2.6rem;
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-variant-numeric: tabular-nums;
  text-align: center;
}

.input--sm {
  width: 5.5rem;
  margin-left: auto;
  text-align: center;
}

.input:focus-visible {
  outline: 0.15rem solid var(--accent);
  outline-offset: 0;
  border-color: var(--accent);
}

.range {
  flex: 1 1 auto;
  accent-color: var(--accent);
  min-height: 1.5rem;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.6rem;
}

.chip {
  min-height: 2.2rem;
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text-muted);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
}

.chip:hover {
  background: var(--surface-2);
  color: var(--text);
}

.chip[aria-pressed="true"] {
  border-color: var(--accent);
  color: var(--accent);
}

.check {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.4rem 0;
  font-size: 0.88rem;
  line-height: 1.4;
  cursor: pointer;
}

.check input {
  width: 1.1rem;
  height: 1.1rem;
  margin: 0.1rem 0 0;
  accent-color: var(--accent);
  flex: none;
}

.row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* --- Help --------------------------------------------------------------- */

.keys {
  margin: 0;
  display: grid;
  gap: 0.15rem;
}

.keys__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.3rem 0;
  border-bottom: 1px dashed var(--border);
}

.keys__row:last-child {
  border-bottom: 0;
}

.keys dt {
  display: flex;
  gap: 0.25rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.keys dd {
  margin: 0;
  font-size: 0.88rem;
  text-align: right;
}

kbd {
  display: inline-block;
  min-width: 1.6rem;
  padding: 0.15rem 0.4rem;
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 0.35rem;
  background: var(--surface-2);
  color: var(--text);
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: 0.75rem;
  text-align: center;
}

.help__note {
  margin: 0.9rem 0 0;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--text-muted);
}

/* --- Toast and scrim ---------------------------------------------------- */

.toast {
  position: absolute;
  left: 50%;
  bottom: calc(4.75rem + env(safe-area-inset-bottom));
  z-index: 30;
  transform: translateX(-50%);
  padding: 0.55rem 0.95rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-elev);
  color: var(--text);
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: var(--shadow);
  animation: toast-in var(--fade) ease;
}

.toast[hidden] {
  display: none;
}

@keyframes toast-in {
  from { opacity: 0; transform: translate(-50%, 0.5rem); }
  to   { opacity: 1; transform: translate(-50%, 0); }
}

.scrim {
  position: absolute;
  inset: 0;
  z-index: 10;
  /* Was left transparent — the whole point of a scrim is to dim everything
     behind the sheet so its edges actually read as a boundary, in either
     theme, instead of the sheet's own (fairly close in tone) background
     being the only thing separating it from the page. */
  background: var(--scrim);
  transition: opacity var(--fade) ease;
}

.scrim[hidden] {
  display: none;
}