/* ── "?" buttons ────────────────────────────────────────────────────── */

.help-btn {
  display: inline-grid;
  place-items: center;
  flex: none;
  padding: 0;
  border: 0;
  border-radius: 50%;
  font-family: inherit;
  font-weight: 800;
  line-height: 1;
  cursor: pointer;
  transition: background-color .15s ease, color .15s ease,
    transform .15s cubic-bezier(.2, .8, .3, 1);
}

/* beside a heading */
.help-btn--inline {
  width: 20px;
  height: 20px;
  margin-left: 6px;
  vertical-align: 2px;
  background: rgba(18, 20, 26, .07);
  color: var(--ink-soft);
  font-size: 12px;
}

/* inside a small label, like Defences Destroyed */
.help-btn--mini {
  width: 15px;
  height: 15px;
  margin-left: 4px;
  vertical-align: 0;
  background: rgba(18, 20, 26, .08);
  color: var(--ink-soft);
  font-size: 9.5px;
}

/* the screen-level one, opposite the back button */
.help-btn--corner {
  position: absolute;
  top: calc(var(--sat) + 14px);
  right: calc(var(--sar) + 16px);
  z-index: 2;
  width: 44px;
  height: 44px;
  background: var(--surface);
  color: var(--ink);
  font-size: 20px;
  box-shadow: var(--shadow-btn);
}

.screen.is-active .help-btn--corner { position: fixed; }

/* in-flow, sized to sit next to a chip */
.help-btn--chip,
.help-btn--duel,
.duel__btn {
  width: 34px;
  height: 34px;
  background: var(--surface);
  color: var(--ink);
  font-size: 16px;
  box-shadow: var(--shadow-btn);
}

.duel__btn {
  display: grid;
  place-items: center;
  flex: none;
  padding: 0;
  border: 0;
  border-radius: 50%;
  cursor: pointer;
  transition: background-color .15s ease, color .15s ease;
}

.duel__btn svg { width: 18px; height: 18px; }

.help-btn:active, .duel__btn:active { transform: scale(.92); }

/* ── Bottom sheet ───────────────────────────────────────────────────── */

.sheet {
  position: fixed;
  inset: 0;
  z-index: 150;
  display: grid;
  align-items: end;
}

.sheet__scrim {
  position: absolute;
  inset: 0;
  background: rgba(12, 14, 20, .38);
  opacity: 0;
  transition: opacity .26s ease;
}

.sheet__panel {
  position: relative;
  display: flex;
  flex-direction: column;
  width: 100%;
  max-height: min(84dvh, 760px);
  padding-bottom: var(--sab);
  border-radius: 24px 24px 0 0;
  background: var(--surface);
  box-shadow: 0 -10px 40px rgba(17, 24, 39, .18);
  transform: translateY(100%);
  transition: transform .32s cubic-bezier(.2, .9, .3, 1);
}

.sheet.is-open .sheet__scrim { opacity: 1; }
.sheet.is-open .sheet__panel { transform: none; }

.sheet__grip {
  width: 38px;
  height: 5px;
  margin: 9px auto 2px;
  border-radius: 3px;
  background: var(--line);
}

.sheet__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 6px 18px 8px 20px;
}

.sheet__title {
  margin: 0;
  font-size: clamp(19px, 5.4vw, 22px);
  font-weight: 800;
  letter-spacing: -.02em;
}

.sheet__close {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  flex: none;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(18, 20, 26, .06);
  color: var(--ink);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}

.sheet__body {
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 2px 20px 22px;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--ink-mid);
}

@media (min-width: 720px) {
  .sheet { align-items: center; justify-items: center; }

  .sheet__panel {
    width: min(480px, calc(100% - 40px));
    border-radius: 24px;
    padding-bottom: 0;
    opacity: 0;
    transform: translateY(18px) scale(.97);
    transition: transform .28s cubic-bezier(.2, .9, .3, 1), opacity .2s ease;
  }

  .sheet.is-open .sheet__panel { opacity: 1; }
  .sheet__grip { display: none; }
}

/* ── Help content ───────────────────────────────────────────────────── */

.sheet__body p { margin: 0 0 10px; }
.sheet__body b { color: var(--ink); }

.sheet__body h3 {
  margin: 18px 0 8px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.help-lead { font-size: 15.5px; color: var(--ink); }

.help-note {
  margin-top: 14px !important;
  padding: 10px 12px;
  border-radius: 12px;
  background: var(--bg);
  box-shadow: inset 0 0 0 1px var(--line);
  font-size: 13.5px;
}

.help-motto {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 4px 8px;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(18, 20, 26, .04);
  font-size: 13px;
  text-align: center;
}

.help-motto i {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--ink-soft);
}

.help-steps {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.help-steps li {
  display: grid;
  grid-template-columns: 26px 1fr;
  column-gap: 10px;
  counter-increment: step;
}

.help-steps li::before {
  content: counter(step);
  grid-row: span 2;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--ink);
  color: #fff;
  font-size: 13px;
  font-weight: 800;
}

.help-steps b { display: block; }

.help-rows {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.help-rows li { display: flex; align-items: center; gap: 11px; }

/* the same squares you will see on the board */
.swatch {
  position: relative;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  flex: none;
  border-radius: 7px;
  overflow: hidden;
}

.swatch svg { width: 58%; height: 58%; }
.swatch--miss { background: #e8ebf0; color: #98a2b2; }
.swatch--fire { background: radial-gradient(circle at 50% 78%, #ffd36b, #f2662f 58%, #cf3524 100%); color: #fff3d6; }
.swatch--down { background: var(--c-blue-btn); color: #fff; }
.swatch--mine { background: #2b1218; color: #ff7a4d; }

.swatch--hint {
  background: #f1f5fb;
  box-shadow: inset 0 0 0 1px var(--line);
}

.swatch--hint::after {
  content: '';
  position: absolute;
  right: -6px;
  top: 50%;
  width: 16px;
  height: 20px;
  translate: 0 -50%;
  border-radius: 50%;
  background: radial-gradient(circle at 100% 50%, rgba(244, 55, 70, .95), rgba(244, 55, 70, 0) 72%);
}

.help-fleet {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.help-fleet th {
  padding: 0 4px 6px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .1em;
  text-align: left;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.help-fleet td {
  padding: 7px 4px;
  border-top: 1px solid var(--line);
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.help-fleet tr.is-mine td { color: var(--ink-mid); }
.help-fleet tfoot td { font-size: 12.5px; color: var(--ink-soft); }

.help-fleet__unit {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
}

.help-fleet__unit svg { width: 18px; height: 18px; color: var(--c-blue-btn); }

.help-colours {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.help-colours span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px 5px 8px;
  border-radius: 999px;
  box-shadow: inset 0 0 0 1px var(--line);
  font-weight: 700;
  color: var(--ink);
}

.help-colours span::before {
  content: '';
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--tone);
}

/* ── Settings ───────────────────────────────────────────────────────── */

.prefs {
  display: grid;
  gap: 8px;
}

.pref {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  width: 100%;
  padding: 12px 14px;
  border: 0;
  border-radius: 14px;
  background: var(--bg);
  box-shadow: inset 0 0 0 1px var(--line);
  text-align: left;
  cursor: pointer;
}

.pref__text { display: flex; flex-direction: column; gap: 2px; }
.pref__text b { font-size: 15px; color: var(--ink); }
.pref__text small { font-size: 12.5px; color: var(--ink-soft); }

.switch {
  position: relative;
  width: 46px;
  height: 28px;
  flex: none;
  border-radius: 999px;
  background: #d5d9e0;
  transition: background-color .2s ease;
}

.switch::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(17, 24, 39, .25);
  transition: transform .2s cubic-bezier(.2, .8, .3, 1);
}

.pref[aria-checked="true"] .switch { background: var(--ink); }
.pref[aria-checked="true"] .switch::after { transform: translateX(18px); }

.sheet__hash {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 12px;
  padding: 12px 14px;
  border-radius: 14px;
  background: var(--bg);
  box-shadow: inset 0 0 0 1px var(--line);
  font-size: 13.5px;
}

.sheet__hash b {
  font-size: 16px;
  letter-spacing: .06em;
  font-variant-numeric: tabular-nums;
}

.sheet__actions {
  display: grid;
  gap: 8px;
  margin-top: 14px;
}

.sheet__actions .action { margin-top: 0; }

@media (prefers-reduced-motion: reduce) {
  .sheet__panel, .sheet__scrim { transition: none; }
}