:root {
  --gold: #e2b857;
  --gold-dim: rgba(226, 184, 87, 0.35);
  --ink: #f3ead6;
  --muted: #b9ae95;
  --panel: rgba(16, 14, 24, 0.78);
  --you: #46c3ff;
  --foe: #ff5b4f;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: #0b0a12;
  color: var(--ink);
  font-family: 'Spectral', Georgia, serif;
  user-select: none;
}

#game canvas { display: block; }
.hidden { display: none !important; }

/* Overlays ---------------------------------------------------------------- */

.overlay {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  overflow-y: auto;
  padding: 32px 16px;
  background: radial-gradient(ellipse at center, rgba(10, 8, 20, 0.35), rgba(5, 4, 10, 0.85));
}

.card {
  width: min(1020px, 100%);
  margin: auto;
}
.card.small {
  width: min(460px, 100%);
  padding: 28px;
  text-align: center;
  background: var(--panel);
  border: 1px solid var(--gold-dim);
  border-radius: 12px;
}

.title {
  margin: 0;
  text-align: center;
  font-family: 'Cinzel', serif;
  font-weight: 900;
  font-size: clamp(44px, 8vw, 92px);
  letter-spacing: 0.12em;
  background: linear-gradient(#fff4c8, #e2b857 55%, #93641c);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 4px 18px rgba(226, 184, 87, 0.35));
}

.tagline {
  text-align: center;
  color: var(--muted);
  font-size: 18px;
  margin: 6px 0 22px;
}

h2 {
  font-family: 'Cinzel', serif;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 12px;
}
h2.big { font-size: 34px; letter-spacing: 0.1em; text-transform: none; margin-bottom: 8px; }

.diff-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 18px;
}

.diff {
  text-align: left;
  font: inherit;
  color: inherit;
  cursor: pointer;
  padding: 16px 18px;
  border-radius: 10px;
  border: 1px solid var(--gold-dim);
  background: linear-gradient(180deg, rgba(42, 34, 60, 0.88), rgba(18, 15, 28, 0.92));
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}
.diff:hover { transform: translateY(-2px); }
.diff.selected {
  border-color: var(--gold);
  box-shadow: 0 0 0 1px var(--gold), 0 0 26px rgba(226, 184, 87, 0.3);
}
.diff h3 {
  font-family: 'Cinzel', serif;
  font-size: 22px;
  margin: 6px 0 0;
  letter-spacing: 0.06em;
}
.diff .who { color: var(--gold); font-size: 14px; margin-bottom: 6px; }
.diff p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.4; }
.pips { display: flex; gap: 5px; }
.pips i {
  width: 22px;
  height: 6px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.14);
}
.pips i.on { background: var(--gold); }

.row {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 14px;
}

.panel {
  padding: 18px 20px;
  background: var(--panel);
  border: 1px solid var(--gold-dim);
  border-radius: 10px;
}

.controls dl {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 5px 14px;
  margin: 0;
  font-size: 15px;
}
.controls dt { font-family: 'Cinzel', serif; font-weight: 700; color: var(--ink); }
.controls dd { margin: 0; color: var(--muted); }
.tip { color: var(--muted); font-size: 14px; margin: 12px 0 0; line-height: 1.4; }

/* Key binding editor */
.binds-title {
  margin: 16px 0 6px;
  font-family: 'Cinzel', serif;
  font-size: 15px;
  color: var(--gold);
}
.binds-title span {
  font-family: 'Spectral', serif;
  font-weight: 400;
  font-size: 13px;
  color: var(--muted);
  margin-left: 6px;
}
.binds {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px 18px;
}
.bind-group {
  grid-column: 1 / -1;
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.bind-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 14px;
}
.bind-key {
  min-width: 74px;
  padding: 3px 8px;
  font-family: 'Cinzel', serif;
  font-weight: 700;
  font-size: 13px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--gold-dim);
  border-radius: 6px;
  cursor: pointer;
}
.bind-key:hover { border-color: var(--gold); }
.bind-key.listening {
  border-color: var(--gold);
  color: #1b1206;
  background: var(--gold);
}
.bind-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 8px;
}
.bind-note { margin: 0; font-size: 13px; color: var(--muted); min-height: 1em; }
.bind-reset {
  flex: none;
  font-family: inherit;
  padding: 4px 10px;
  font-size: 12px;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--gold-dim);
  border-radius: 6px;
  cursor: pointer;
}
.bind-reset:hover { color: var(--ink); border-color: var(--gold); }
@media (max-width: 560px) {
  .binds { grid-template-columns: 1fr; }
}

.settings label {
  display: block;
  font-size: 15px;
  margin-bottom: 12px;
  color: var(--muted);
}
.settings label output { float: right; color: var(--ink); }
.settings input[type='range'] { width: 100%; accent-color: var(--gold); margin-top: 4px; }
.settings .check { display: flex; gap: 8px; align-items: flex-start; }
.settings .check input { accent-color: var(--gold); margin-top: 4px; }

.btn-primary, .btn-ghost {
  display: block;
  width: 100%;
  cursor: pointer;
  font-family: 'Cinzel', serif;
  font-weight: 700;
  letter-spacing: 0.12em;
  border-radius: 8px;
  margin-top: 10px;
}
.btn-primary {
  font-size: 19px;
  padding: 14px 20px;
  border: 1px solid var(--gold);
  background: linear-gradient(#f2cf74, #b8892f);
  color: #1b1206;
  box-shadow: 0 6px 22px rgba(226, 184, 87, 0.25);
}
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost {
  font-size: 14px;
  padding: 10px 16px;
  border: 1px solid var(--gold-dim);
  background: transparent;
  color: var(--ink);
}
.btn-ghost:hover { border-color: var(--gold); }
a.btn-ghost { text-align: center; text-decoration: none; }

.stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin: 10px 0 8px;
}
.stats div {
  padding: 10px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 8px;
  font-size: 13px;
  color: var(--muted);
}
.stats b { display: block; font-family: 'Cinzel', serif; font-size: 22px; color: var(--ink); }

@media (max-width: 760px) {
  .diff-grid, .row { grid-template-columns: 1fr; }
}

/* HUD --------------------------------------------------------------------- */

#hud {
  position: fixed;
  inset: 0;
  z-index: 10;
  pointer-events: none;
}

#vignette {
  position: absolute;
  inset: 0;
  box-shadow: inset 0 0 180px rgba(255, 30, 30, 0.9);
  opacity: 0;
  transition: opacity 0.35s;
}

#damage-dir {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 240px;
  height: 240px;
  margin: -120px 0 0 -120px;
  border-radius: 50%;
  border-top: 7px solid rgba(255, 70, 60, 0.95);
  opacity: 0;
  transition: opacity 0.7s;
}

#crosshair {
  --gap: 7px;
  position: absolute;
  left: 50%;
  top: 50%;
  width: 0;
  height: 0;
}
#crosshair i {
  position: absolute;
  background: #fff;
  box-shadow: 0 0 2px #000;
}
#crosshair .t, #crosshair .b { width: 2px; height: 8px; left: -1px; }
#crosshair .l, #crosshair .r { width: 8px; height: 2px; top: -1px; }
#crosshair .t { bottom: var(--gap); }
#crosshair .b { top: var(--gap); }
#crosshair .l { right: var(--gap); }
#crosshair .r { left: var(--gap); }
#crosshair b {
  position: absolute;
  width: 3px;
  height: 3px;
  left: -1.5px;
  top: -1.5px;
  border-radius: 50%;
  background: #fff;
}
#crosshair.build i { background: #8fe3ff; }

#hitmarker {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 26px;
  height: 26px;
  margin: -13px 0 0 -13px;
  opacity: 0;
}
#hitmarker::before, #hitmarker::after {
  content: '';
  position: absolute;
  left: 12px;
  top: 0;
  width: 2px;
  height: 26px;
  background: #fff;
  box-shadow: 0 0 3px #000;
}
#hitmarker::before { transform: rotate(45deg); }
#hitmarker::after { transform: rotate(-45deg); }
#hitmarker.head::before, #hitmarker.head::after { background: #ffd34d; }
#hitmarker.show { opacity: 1; }

#piece-info, #status-line {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  font-family: 'Cinzel', serif;
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-shadow: 0 1px 3px #000;
  white-space: nowrap;
}
#piece-info { top: calc(50% + 30px); }
#status-line { top: calc(50% + 50px); color: var(--gold); }

#dmg-layer { position: absolute; inset: 0; overflow: hidden; }
.dmg-num {
  position: absolute;
  left: 0;
  top: 0;
  font-family: 'Cinzel', serif;
  font-weight: 900;
  font-size: 22px;
  color: #fff;
  text-shadow: 0 2px 4px #000, 0 0 2px #000;
  white-space: nowrap;
  will-change: transform, opacity;
}
.dmg-num.head { color: #ffd34d; font-size: 28px; }
.dmg-num.ward { color: #8fd0ff; }
.dmg-num.build { color: #d6cdb8; font-size: 15px; }

#scoreboard {
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 8px 18px;
  background: var(--panel);
  border: 1px solid var(--gold-dim);
  border-radius: 10px;
  font-family: 'Cinzel', serif;
}
#scoreboard .side { display: flex; align-items: center; gap: 10px; font-size: 14px; }
#scoreboard .side b { font-size: 28px; line-height: 1; }
#scoreboard .you b { color: var(--you); }
#scoreboard .foe b { color: var(--foe); }
#scoreboard .mid { text-align: center; }
#round-label { font-weight: 700; font-size: 14px; letter-spacing: 0.08em; }
.first-to { font-size: 10px; color: var(--muted); letter-spacing: 0.1em; }
#round-timer {
  font-family: 'Cinzel', serif;
  font-weight: 900;
  font-size: 22px;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  transition: color 0.2s;
}
#round-timer.low { color: var(--foe); animation: timer-pulse 1s ease-in-out infinite; }
@keyframes timer-pulse { 50% { opacity: 0.55; } }

#banner {
  position: absolute;
  top: 26%;
  left: 0;
  right: 0;
  text-align: center;
  font-family: 'Cinzel', serif;
  font-weight: 900;
  font-size: clamp(36px, 6vw, 68px);
  letter-spacing: 0.1em;
  text-shadow: 0 4px 26px rgba(0, 0, 0, 0.85);
  opacity: 0;
  transition: opacity 0.25s;
}
#banner.show { opacity: 1; }
#banner small {
  display: block;
  font-size: 0.32em;
  letter-spacing: 0.18em;
  color: var(--muted);
}

#hint {
  position: absolute;
  top: 18px;
  left: 20px;
  font-size: 13px;
  color: var(--muted);
  text-shadow: 0 1px 2px #000;
}

/* The student's points total, under the pause hint. */
#points {
  position: absolute;
  top: 42px;
  left: 20px;
  font-size: 14px;
  font-weight: 700;
  color: #ffd400;
  letter-spacing: 0.06em;
  text-shadow: 0 1px 2px #000;
}

#points[hidden] {
  display: none;
}

#points.bump {
  animation: points-bump 0.6s ease-out;
}

@keyframes points-bump {
  30% {
    transform: scale(1.25);
    color: #39ff14;
  }
}

@media (prefers-reduced-motion: reduce) {
  #points.bump,
  .question-points.bump {
    animation: none;
  }
}

#vitals {
  position: absolute;
  left: 22px;
  bottom: 22px;
  width: min(320px, 40vw);
}
.bar {
  position: relative;
  height: 20px;
  margin-top: 6px;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 4px;
}
.bar > div { height: 100%; width: 50%; transition: width 0.15s; }
.bar.ward > div { background: linear-gradient(90deg, #2f6fe0, #7fd0ff); }
.bar.health > div { background: linear-gradient(90deg, #2f9f4c, #8ef0a0); }
.bar span {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  padding-left: 8px;
  font-family: 'Cinzel', serif;
  font-weight: 700;
  font-size: 12px;
  text-shadow: 0 1px 2px #000;
}

#hotbar {
  position: absolute;
  right: 22px;
  bottom: 22px;
  display: flex;
  gap: 14px;
  align-items: flex-end;
}
#hotbar .group { display: flex; gap: 6px; }
.slot {
  position: relative;
  width: 82px;
  height: 74px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1px;
  background: var(--panel);
  border: 1px solid var(--gold-dim);
  border-radius: 7px;
  transition: transform 0.12s, border-color 0.12s, box-shadow 0.12s;
}
.slot.build { width: 60px; }
.slot svg { width: 26px; height: 26px; color: var(--ink); }
.slot .name { font-family: 'Cinzel', serif; font-weight: 700; font-size: 10px; letter-spacing: 0.04em; }
.slot .sub { font-size: 12px; color: var(--muted); }
.slot kbd {
  position: absolute;
  top: 3px;
  left: 6px;
  font-family: 'Spectral', serif;
  font-size: 11px;
  color: var(--muted);
}
.slot.active {
  transform: translateY(-5px);
  border-color: var(--gold);
  box-shadow: 0 0 14px rgba(226, 184, 87, 0.5);
}
.slot.active svg { color: var(--gold); }
.slot.empty { opacity: 0.45; }

/* Touch controls ---------------------------------------------------------- */

.touch-only { display: none; }
body.touch .touch-only { display: revert; }
body.touch dl.touch-only { display: grid; }
body.touch span.touch-only { display: inline; }
body.touch .kb-only { display: none; }

.settings select {
  display: block;
  width: 100%;
  margin-top: 4px;
  padding: 7px 8px;
  font: inherit;
  font-size: 14px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--gold-dim);
  border-radius: 6px;
}
.settings select option { background: #1a1624; }

#touch-ui {
  --sl: env(safe-area-inset-left, 0px);
  --sr: env(safe-area-inset-right, 0px);
  --sb: env(safe-area-inset-bottom, 0px);
  position: absolute;
  inset: 0;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}
body:not(.touch) #touch-ui { display: none; }
#t-pad {
  position: absolute;
  inset: 0;
  pointer-events: auto;
  touch-action: none;
}

/* The move stick rests bottom left and jumps to wherever the thumb lands. */
#t-stick {
  position: absolute;
  left: calc(var(--sl) + 96px);
  top: calc(100% - var(--sb) - 104px);
  width: 128px;
  height: 128px;
  margin: -64px 0 0 -64px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.35);
  background: radial-gradient(circle, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.14));
  opacity: 0.6;
  pointer-events: none;
}
#t-stick.live { opacity: 1; }
#t-knob {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 58px;
  height: 58px;
  margin: -29px 0 0 -29px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
}

.tb {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1px;
  padding: 0;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.55);
  background: rgba(14, 12, 22, 0.42);
  color: #fff;
  font-family: 'Cinzel', serif;
  font-weight: 700;
  font-size: 10px;
  letter-spacing: 0.05em;
  pointer-events: auto;
  touch-action: none;
  -webkit-tap-highlight-color: transparent;
}
.tb svg { width: 46%; height: 46%; }
.tb.pressed { background: rgba(255, 255, 255, 0.3); transform: scale(0.94); }
.tb .i-place { display: none; }
#touch-ui.building .tb .i-place { display: revert; }
#touch-ui.building .tb .i-shoot { display: none; }

#t-fire {
  right: calc(var(--sr) + 128px);
  bottom: calc(var(--sb) + 112px);
  width: 96px;
  height: 96px;
  border-color: rgba(255, 255, 255, 0.75);
}
#t-fire-l {
  left: calc(var(--sl) + 196px);
  bottom: calc(var(--sb) + 196px);
  width: 62px;
  height: 62px;
}
#touch-ui.building .t-fire { border-color: #8fe3ff; color: #8fe3ff; }
#t-jump {
  right: calc(var(--sr) + 24px);
  bottom: calc(var(--sb) + 28px);
  width: 84px;
  height: 84px;
}
#t-ads {
  right: calc(var(--sr) + 246px);
  bottom: calc(var(--sb) + 222px);
  width: 58px;
  height: 58px;
}
#t-ads.on { background: rgba(226, 184, 87, 0.55); border-color: var(--gold); }
#touch-ui.building #t-ads, #touch-ui.building #t-reload { display: none; }
#t-reload {
  right: calc(var(--sr) + 150px);
  bottom: calc(var(--sb) + 226px);
  width: 50px;
  height: 50px;
}
#t-phase {
  right: calc(var(--sr) + 34px);
  bottom: calc(var(--sb) + 218px);
  width: 64px;
  height: 64px;
  border-radius: 16px;
  border-color: rgba(194, 160, 255, 0.8);
  color: #e4d4ff;
}
#t-phase svg { width: 42%; height: 42%; }
/* Direct build buttons hug the knight's right side, just above the hotbar,
   so a piece is one short thumb move from the aim. */
#t-builds {
  position: absolute;
  left: 50%;
  bottom: var(--sb);
  width: 0;
  height: 0;
}
.tbuild {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  border-color: rgba(143, 227, 255, 0.75);
  color: #d8f6ff;
  font-size: 8px;
}
.tbuild svg { width: 50%; height: 50%; }
.tbuild.pressed { background: rgba(143, 227, 255, 0.4); }
.tbuild.empty { opacity: 0.45; }
#t-b-wall { left: 24px; bottom: 140px; }
#t-b-ramp { left: 82px; bottom: 140px; }
#t-b-floor { left: 140px; bottom: 140px; }
#t-b-roof { left: 24px; bottom: 82px; }
#t-b-box { left: 82px; bottom: 82px; }
#t-pause {
  right: calc(var(--sr) + 14px);
  top: 12px;
  width: 44px;
  height: 44px;
  border-radius: 12px;
}

/* Rearranged HUD while touch is on. */
body.touch #hint, body.touch .slot kbd { display: none; }
body.touch #vitals {
  left: calc(env(safe-area-inset-left, 0px) + 14px);
  top: 12px;
  bottom: auto;
  width: min(230px, 30vw);
}
body.touch #hotbar {
  left: 50%;
  right: auto;
  bottom: calc(env(safe-area-inset-bottom, 0px) + 10px);
  transform: translateX(-50%);
  z-index: 2;
}
/* Touch keeps the weapons on the hotbar; pieces have their own buttons. */
body.touch #hotbar .group.wand,
body.touch #hotbar .group.builds { display: none; }
body.touch .slot {
  width: 64px;
  height: 56px;
  pointer-events: auto;
  touch-action: none;
}
body.touch .slot.build { width: 56px; }
body.touch .slot .name { font-size: 8px; }
body.touch #scoreboard { transform: translateX(-50%) scale(0.85); transform-origin: top center; }

#rotate-hint { display: none; }
@media (orientation: portrait) {
  body.touch #rotate-hint {
    position: absolute;
    inset: 0;
    z-index: 5;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    text-align: center;
    font-family: 'Cinzel', serif;
    font-size: 22px;
    color: var(--gold);
    background: rgba(8, 6, 14, 0.9);
    pointer-events: auto;
  }
}

/* Smaller phones in landscape. */
@media (max-height: 430px) {
  /* Zoom scales the offsets too, so the cluster shrinks into the corner. */
  body.touch #touch-ui .tb { zoom: 0.82; }
  body.touch .slot { width: 54px; height: 48px; }
  body.touch .slot .name { display: none; }
}

/* Short landscape screens (phones on their side): tighten the menu. */
@media (max-height: 500px) {
  .overlay { padding: 12px 16px; }
  .title { font-size: 40px; margin: 0; }
  .tagline { font-size: 14px; margin: 2px 0 8px; }
  .diff { padding: 10px 14px; }
  .diff p { display: none; }
  .diff-grid, .row { grid-template-columns: repeat(3, 1fr); }
  /* Settings first, with the start button on top, so it shows without scrolling. */
  .row { grid-template-columns: 1fr; }
  .row .settings { order: -1; display: flex; flex-direction: column; }
  .settings h2 { display: none; }
  .settings #start { order: -1; margin: 0 0 6px; padding: 10px 20px; }
  .panel { padding: 12px 14px; }
  .controls dl { font-size: 13px; }
}