/* helms-ui-kit.css — HELMS Foundation component kit (Batch 1)
   Shared substrate for every later HELMS screen.
   Palette-driven via CSS custom properties (art-bible §3).
   Additive: never overrides existing platform-base.html selectors.

   Components:
     .hui-btn          buttons (--primary, --secondary, --ghost, --icon)
     .hui-tile         answer tiles (--selected, --correct, --tryagain)
     .hui-hearts       HUD hearts row
     .hui-xp-*         XP bar + label
     .hui-stat         streak / coin / rank chip
     .hui-pill         badge pills (--rank, --world, --new, --combo, --streak)
     .hui-q-card       question card template
     .hui-modal        ceremony modal card
     .hui-level-pill   level/rank pill
     .hui-world-pill   world label pill
*/

/* ── Locked palette tokens ──────────────────────────────────── */
:root {
  --sky:    #BFE3F2;
  --sunset: #FBBF77;
  --river:  #3E9BC4;
  --leaf:   #7BB56A;
  --fur:    #B07A4E;
  --hat:    #F5C542;
  --brand:  #F97316;
  --ink:    #2A2E45;

  /* Derived shades */
  --sky-dk:      #8FC8E5;
  --sunset-dk:   #D48D3A;
  --river-dk:    #2A7EA8;
  --leaf-dk:     #4E7D3E;
  --ink-muted:   rgba(42, 46, 69, .55);
  --ink-ghost:   rgba(42, 46, 69, .1);
  --ink-ghost-2: rgba(42, 46, 69, .18);

  /* Component tokens */
  --hui-radius-sm: 10px;
  --hui-radius:    14px;
  --hui-radius-lg: 20px;
  --hui-shadow-sm: 0 2px 6px rgba(42, 46, 69, .1);
  --hui-shadow:    0 4px 16px rgba(42, 46, 69, .12);
  --hui-shadow-lg: 0 8px 40px rgba(42, 46, 69, .15);

  /* ── Semantic layer (design-kit-standard §A) — roles, not raw palette.
     Reference THESE from new components; per-grade themes reassign here. ── */
  --color-success: var(--leaf);
  --color-success-dk: var(--leaf-dk);
  --color-warn:    var(--sunset);
  --color-accent:  var(--brand);
  --color-info:    var(--river);
  --surface:       #fff;
  --surface-sky:   var(--sky);
  --text:          var(--ink);
  --text-muted:    var(--ink-muted);
  --radius:        var(--hui-radius);

  /* ── Spacing scale (audit found 0 spacing tokens; 8px rhythm) ── */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 22px;
  --space-6: 34px;

  /* ── Motion tokens (audit found 304 hardcoded durations; centralize) ── */
  --dur-fast:   .12s;
  --dur:        .14s;
  --dur-slow:   .28s;
  --dur-reveal: .55s;
  --ease-spring: cubic-bezier(.34, 1.56, .64, 1);  /* tactile press/pop */
  --ease-out:    cubic-bezier(.25, .46, .45, .94);  /* settle */
  --motion-press:   transform var(--dur) var(--ease-spring);
  --motion-reveal:  width var(--dur-reveal) var(--ease-spring);

  /* ── Grade maturity dials (design-kit-standard §C) — defaults = 3–4/HELMS.
     A track can override on a wrapper: [data-grade="k"]{ --dial-* } ── */
  --dial-target:  44px;   /* min touch target */
  --dial-text:    17px;   /* base body size */
  --dial-density: 1;      /* layout-density multiplier hook */
}

/* Grade-tier dial overrides — reassign the four dials per §C without new CSS. */
[data-grade="k"]    { --dial-target: 60px; --dial-text: 22px; }
[data-grade="g1-2"] { --dial-target: 52px; --dial-text: 19px; }
[data-grade="g5-gt"]{ --dial-target: 44px; --dial-text: 16px; }

/* ── Buttons ────────────────────────────────────────────────── */

.hui-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 12px 22px;
  border-radius: var(--hui-radius);
  border: none;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 800;
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
  transition:
    transform   .14s cubic-bezier(.34, 1.56, .64, 1),
    box-shadow  .14s,
    background  .14s;
  min-height: var(--dial-target, 44px);   /* §C maturity dial */
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  text-decoration: none;
}

.hui-btn:hover  { transform: translateY(-2px); }
.hui-btn:active { transform: translateY(1px) scale(.97); }

/* -- primary: brand-orange CTA */
.hui-btn--primary {
  background: var(--brand);
  color: #fff;
  box-shadow: 0 4px 0 var(--sunset-dk), var(--hui-shadow);
}
.hui-btn--primary:hover {
  background: #f85e00;
  box-shadow: 0 6px 0 var(--sunset-dk), 0 6px 22px rgba(249, 115, 22, .28);
}
.hui-btn--primary:active {
  box-shadow: 0 1px 0 var(--sunset-dk);
}

/* -- secondary: river-blue outlined */
.hui-btn--secondary {
  background: #fff;
  color: var(--river-dk);
  border: 2px solid var(--river);
  box-shadow: var(--hui-shadow-sm);
}
.hui-btn--secondary:hover {
  background: var(--sky);
  border-color: var(--river-dk);
}

/* -- ghost: transparent with ink border */
.hui-btn--ghost {
  background: transparent;
  color: var(--ink);
  border: 2px solid var(--ink-ghost-2);
}
.hui-btn--ghost:hover {
  background: var(--ink-ghost);
  border-color: var(--ink-muted);
}

/* -- icon: 44×44 circle, no label */
.hui-btn--icon {
  padding: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--ink-ghost);
  color: var(--ink);
  font-size: 20px;
}
.hui-btn--icon:hover { background: var(--ink-ghost-2); }

/* ── Answer Tiles ───────────────────────────────────────────── */

.hui-tile {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 18px 22px;
  background: #fff;
  border: 2.5px solid var(--ink-ghost);
  border-radius: var(--hui-radius);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 800;
  font-size: 18px;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
  transition:
    border-color .12s,
    background   .12s,
    transform    .12s,
    box-shadow   .12s;
  box-shadow: 0 2px 0 var(--ink-ghost), var(--hui-shadow-sm);
  min-height: calc(var(--dial-target, 44px) + 16px);   /* §C maturity dial */
  font-size: var(--dial-text, 18px);
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.hui-tile:hover:not(:disabled) {
  border-color: var(--river);
  background: var(--sky);
  transform: translateY(-2px);
  box-shadow: 0 4px 0 rgba(62, 155, 196, .2), var(--hui-shadow-sm);
}

.hui-tile:active:not(:disabled) {
  transform: translateY(1px) scale(.98);
  box-shadow: none;
}

.hui-tile:disabled { cursor: default; }

/* -- selected: river-blue highlight, awaiting confirm */
.hui-tile--selected {
  border-color: var(--river);
  background: var(--sky);
  box-shadow: 0 0 0 3px rgba(62, 155, 196, .22), var(--hui-shadow-sm);
}

/* -- correct: leaf green success */
.hui-tile--correct {
  border-color: var(--leaf);
  background: rgba(123, 181, 106, .1);
  color: var(--leaf-dk);
  box-shadow: 0 0 0 4px rgba(123, 181, 106, .2);
  animation: huiCorrect .36s cubic-bezier(.25, .46, .45, .94);
}

/* -- tryagain: gentle sunset warmth (no harsh red) */
.hui-tile--tryagain {
  border-color: var(--sunset);
  background: rgba(251, 191, 119, .1);
  color: var(--ink);
  animation: huiTryAgain .4s ease;
}

@keyframes huiCorrect {
  0%   { transform: scale(1, 1) }
  15%  { transform: scale(1.06, .94) }
  40%  { transform: scale(.97, 1.05) }
  70%  { transform: scale(1.02, .98) }
  100% { transform: scale(1, 1) }
}

@keyframes huiTryAgain {
  0%, 100% { transform: translateX(0) }
  25%       { transform: translateX(-7px) }
  75%       { transform: translateX(7px) }
}

/* ── HUD — Hearts row ───────────────────────────────────────── */

.hui-hearts {
  display: flex;
  gap: 5px;
  align-items: center;
}

.hui-heart {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    transform .28s cubic-bezier(.34, 1.56, .64, 1),
    opacity   .28s;
}

.hui-heart--lost {
  opacity: .3;
  transform: scale(.82);
  filter: grayscale(1);
}

/* ── HUD — XP bar ──────────────────────────────────────────── */

.hui-xp-label {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 800;
  font-size: 12px;
  color: var(--ink);
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}

.hui-xp-label span {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  color: var(--ink-muted);
}

.hui-xp-track {
  height: 8px;
  background: var(--ink-ghost);
  border-radius: 99px;
  overflow: hidden;
}

.hui-xp-fill {
  height: 100%;
  background: var(--hat);
  border-radius: 99px;
  min-width: 4px;
  transition: width .55s cubic-bezier(.34, 1.56, .64, 1);
}

/* ── HUD — Streak / coin / rank stat chips ──────────────────── */

.hui-stat-row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.hui-stat {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: #fff;
  border: 1.5px solid var(--ink-ghost);
  border-radius: 999px;
  padding: 5px 12px;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 800;
  font-size: 14px;
  color: var(--ink);
  box-shadow: var(--hui-shadow-sm);
  white-space: nowrap;
}

.hui-stat--streak {
  color: var(--brand);
  border-color: rgba(249, 115, 22, .25);
  background: rgba(249, 115, 22, .06);
}

.hui-stat--coin {
  color: #a0760a;
  border-color: rgba(245, 197, 66, .4);
  background: rgba(245, 197, 66, .08);
}

.hui-stat--rank {
  color: var(--river-dk);
  border-color: rgba(62, 155, 196, .3);
  background: rgba(62, 155, 196, .06);
}

/* ── Pills ──────────────────────────────────────────────────── */

.hui-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px;
  border-radius: 999px;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 700;
  font-size: 11px;
  letter-spacing: .03em;
  white-space: nowrap;
}

/* -- rank: river blue */
.hui-pill--rank {
  background: rgba(62, 155, 196, .1);
  color: var(--river-dk);
  border: 1.5px solid rgba(62, 155, 196, .28);
}

/* -- world: sky / place label */
.hui-pill--world {
  background: rgba(191, 227, 242, .5);
  color: var(--ink);
  border: 1.5px solid var(--sky-dk);
  letter-spacing: .07em;
  text-transform: uppercase;
}

/* -- new: brand orange badge */
.hui-pill--new {
  background: var(--brand);
  color: #fff;
  font-weight: 800;
}

/* -- combo: brand orange outline */
.hui-pill--combo {
  background: rgba(249, 115, 22, .09);
  color: var(--brand);
  border: 1.5px solid rgba(249, 115, 22, .28);
  font-weight: 800;
}

/* -- streak: sunset warmth */
.hui-pill--streak {
  background: rgba(251, 191, 119, .18);
  color: var(--sunset-dk);
  border: 1.5px solid rgba(251, 191, 119, .5);
}

/* ── Question card template ─────────────────────────────────── */

.hui-q-card {
  background: #fff;
  border: 1.5px solid var(--ink-ghost);
  border-radius: var(--hui-radius-lg);
  overflow: hidden;
  box-shadow: var(--hui-shadow-lg);
}

.hui-q-card__header {
  background: var(--sky);
  border-bottom: 1.5px solid var(--sky-dk);
  padding: 11px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 44px;
}

.hui-q-card__body {
  padding: 22px 20px 26px;
}

.hui-q-card__prompt {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 900;
  font-size: clamp(18px, 2.5vw, 26px);
  color: var(--ink);
  text-align: center;
  line-height: 1.3;
  margin-bottom: 22px;
}

.hui-q-card__opts {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 460px;
  margin: 0 auto;
}

/* ── Ceremony modal card ─────────────────────────────────────── */

.hui-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(42, 46, 69, .52);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 500;
}

.hui-modal {
  background: #fff;
  border-radius: var(--hui-radius-lg);
  padding: 34px 26px 28px;
  max-width: 400px;
  width: 100%;
  text-align: center;
  box-shadow: var(--hui-shadow-lg);
  position: relative;
  overflow: hidden;
}

/* Soft sky glow at the top */
.hui-modal::before {
  content: '';
  position: absolute;
  top: -50px;
  left: 50%;
  transform: translateX(-50%);
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--sky) 0%, transparent 68%);
  pointer-events: none;
  z-index: 0;
}

.hui-modal__icon {
  font-size: 54px;
  line-height: 1;
  margin-bottom: 10px;
  position: relative;
  z-index: 1;
  display: block;
}

.hui-modal__title {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 900;
  font-size: clamp(22px, 4vw, 28px);
  color: var(--ink);
  margin-bottom: 7px;
  position: relative;
  z-index: 1;
  line-height: 1.1;
}

.hui-modal__sub {
  font-size: 15px;
  color: var(--ink-muted);
  margin-bottom: 24px;
  line-height: 1.55;
  position: relative;
  z-index: 1;
  max-width: 320px;
  margin-left: auto;
  margin-right: auto;
}

.hui-modal__actions {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

/* ── Level / rank / world pills ──────────────────────────────── */

.hui-level-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: var(--ink);
  color: #fff;
  border-radius: 999px;
  padding: 4px 11px;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 800;
  font-size: 12px;
  letter-spacing: .03em;
}

.hui-world-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: var(--sky);
  color: var(--ink);
  border: 1.5px solid var(--sky-dk);
  border-radius: 999px;
  padding: 3px 10px;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 700;
  font-size: 11px;
  letter-spacing: .07em;
  text-transform: uppercase;
}

/* ── Responsive safeguard ────────────────────────────────────── */

@media (max-width: 400px) {
  .hui-tile { font-size: 16px; padding: 16px 18px; }
  .hui-btn  { font-size: 14px; padding: 10px 18px; }
}