:root {
  --blue: #3a94e0;
  --yellow: #f7d417;
  --green: #86c934;
  --pink: #ec2f8f;
  --navy: #12358f;
  --rod: #bfe0ef;
  --rod-dark: #9cc9de;
  --bg: #fff8e7;
  --panel: #ffffff;
  --ink: #1d2340;
  --muted: #69708c;
  --line: #e7e1cf;
  --shadow: 0 10px 30px rgba(18, 53, 143, 0.12);

  /* Board geometry; mini boards override these. */
  --rh: 26px;
  --rw: min(66px, calc((100vw - 64px) / 6 - 8px));
  --rod-w: calc(var(--rw) * 0.28);
  --gap: 10px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
}

/* No double-tap zoom anywhere: quick taps are game input. Pinch zoom still works. */
html {
  touch-action: manipulation;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100dvh;
  background:
    radial-gradient(circle at 10% 0%, #ffe8f3 0, transparent 35%),
    radial-gradient(circle at 100% 30%, #e3f3ff 0, transparent 40%),
    var(--bg);
  color: var(--ink);
  font-family: 'Fredoka', ui-rounded, 'SF Pro Rounded', system-ui, sans-serif;
  font-weight: 500;
  -webkit-tap-highlight-color: transparent;
}

[hidden] {
  display: none !important;
}

.c-blue { color: var(--blue); }
.c-yellow { color: #e5b800; }
.c-green { color: var(--green); }
.c-pink { color: var(--pink); }

/* ---------- Top bar ---------- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  margin: 0;
  font-size: clamp(22px, 5vw, 32px);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1;
}

.logo small {
  font-size: 0.45em;
  letter-spacing: 0.4em;
  color: var(--muted);
  vertical-align: middle;
}

.room-badge {
  background: var(--panel);
  border: 2px solid var(--line);
  border-radius: 999px;
  padding: 6px 12px;
  font-weight: 600;
  letter-spacing: 0.15em;
}

/* ---------- Panels & controls ---------- */

.screen {
  padding: 8px 16px 32px;
}

.panel {
  max-width: 440px;
  margin: 4vh auto 0;
  background: var(--panel);
  border-radius: 24px;
  padding: 24px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.tagline {
  margin: 0;
  font-size: 18px;
  text-align: center;
}

.label {
  margin: 0;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field span {
  font-size: 14px;
  color: var(--muted);
}

input {
  font: inherit;
  font-size: 18px;
  padding: 12px 14px;
  border: 2px solid var(--line);
  border-radius: 14px;
  background: #fffdf7;
  color: var(--ink);
  min-width: 0;
}

input:focus {
  outline: none;
  border-color: var(--blue);
}

.btn {
  font: inherit;
  font-size: 18px;
  font-weight: 600;
  border: 0;
  border-radius: 14px;
  padding: 12px 18px;
  cursor: pointer;
  background: #eef3fb;
  color: var(--navy);
  transition: transform 0.08s, background 0.15s;
}

.btn:active {
  transform: translateY(1px) scale(0.99);
}

.btn:disabled {
  opacity: 0.5;
  cursor: default;
}

.btn-primary {
  background: var(--navy);
  color: #fff;
  box-shadow: 0 4px 0 #0a2266;
}

.btn-primary.is-on {
  background: var(--green);
  box-shadow: 0 4px 0 #5f9a1d;
}

.btn-small {
  font-size: 14px;
  padding: 8px 12px;
}

.btn-link {
  background: none;
  color: var(--muted);
  font-size: 15px;
  padding: 4px;
}

.divider {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 14px;
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 2px;
  background: var(--line);
}

.join-row {
  display: flex;
  gap: 10px;
}

.join-row input {
  flex: 1;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  text-align: center;
  font-weight: 600;
}

.error {
  margin: 0;
  min-height: 1.2em;
  color: #c4214f;
  text-align: center;
}

.hint {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.center {
  text-align: center;
}

.rules summary {
  cursor: pointer;
  color: var(--navy);
  font-weight: 600;
}

.rules ul {
  padding-left: 18px;
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.5;
}

kbd {
  font: inherit;
  font-size: 0.85em;
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 6px;
  padding: 0 5px;
  background: #fffdf7;
}

.code-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.big-code {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--navy);
}

.player-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.player-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border: 2px solid var(--line);
  border-radius: 14px;
}

.player-list li.waiting {
  border-style: dashed;
  color: var(--muted);
}

.pill {
  font-size: 13px;
  font-weight: 600;
  border-radius: 999px;
  padding: 3px 10px;
  background: #f1efe7;
  color: var(--muted);
}

.pill.ready {
  background: #e6f6d4;
  color: #3f7a10;
}

.segmented {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  background: #f4f1e6;
  padding: 5px;
  border-radius: 14px;
}

.segmented button {
  font: inherit;
  font-weight: 600;
  border: 0;
  border-radius: 10px;
  padding: 10px 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.segmented button[aria-checked='true'] {
  background: var(--panel);
  color: var(--navy);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}

/* ---------- Game layout ---------- */

.game-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 220px 1fr 220px;
  gap: 20px;
  align-items: start;
}

.my-side {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.hud {
  display: flex;
  gap: 22px;
  background: var(--panel);
  border-radius: 16px;
  padding: 10px 18px;
  box-shadow: var(--shadow);
}

.hud div {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hud b {
  font-size: 22px;
  font-variant-numeric: tabular-nums;
}

.target-card {
  background: #fff;
  border-radius: 14px;
  padding: 10px 12px 12px;
  box-shadow: var(--shadow);
  border-top: 10px solid var(--pink);
}

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-weight: 700;
  color: var(--navy);
  font-size: 13px;
  margin-bottom: 8px;
}

.card-diff {
  color: var(--pink);
  font-size: 18px;
  text-transform: uppercase;
}

.opp-side {
  background: var(--panel);
  border-radius: 16px;
  padding: 12px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.opp-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.opp-list:empty::before {
  content: 'Nobody else is here.';
  color: var(--muted);
  font-size: 14px;
}

.opp {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.opp + .opp {
  border-top: 2px solid var(--line);
  padding-top: 10px;
}

.opp-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 6px;
  font-size: 15px;
  min-width: 0;
}

.opp-name {
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.opp-status {
  color: var(--muted);
  font-size: 13px;
  white-space: nowrap;
}

.opp.finished .opp-status {
  color: #3f7a10;
  font-weight: 600;
}

.opp-stats {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
}

/* Status line above your board: finished, watching, time left in the round. */
.banner {
  background: var(--navy);
  color: #fff;
  border-radius: 12px;
  padding: 8px 14px;
  font-weight: 600;
  text-align: center;
}

.progress {
  height: 10px;
  background: #f1efe7;
  border-radius: 999px;
  overflow: hidden;
}

.progress div {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--blue), var(--green));
  transition: width 0.2s;
}

/* ---------- Board ---------- */

.board {
  --lift: calc(var(--rh) * 1.6);
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: var(--gap);
  padding: 0 calc(var(--gap) * 1.2) calc(var(--rh) * 0.6);
  position: relative;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  touch-action: none;
}

/* The base the poles stand on. */
.board::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: calc(var(--rh) * 0.8);
  border-radius: calc(var(--rh) * 0.4);
  background: linear-gradient(var(--rod), var(--rod-dark));
  box-shadow: 0 3px 0 rgba(0, 0, 0, 0.06);
}

.board.main {
  background: rgba(255, 255, 255, 0.55);
  border-radius: 24px;
  padding-top: 8px;
}

.board.mini {
  --rh: 9px;
  --rw: 24px;
  --gap: 5px;
  --lift: 0px;
}

.board.mini.opp-board {
  --rh: 10px;
  --rw: 26px;
}

/* Three or more opponents: smaller boards so the column fits. */
.opp-list:not([data-count='1']):not([data-count='2']) .board.mini.opp-board {
  --rh: 6px;
  --rw: 18px;
  --gap: 4px;
}

.pole {
  position: relative;
  width: var(--rw);
  height: calc(var(--rh) * 10 + var(--lift) + var(--rh) * 0.4);
  display: flex;
  flex-direction: column-reverse;
  align-items: center;
  z-index: 1;
  cursor: pointer;
}

.board.mini .pole {
  cursor: default;
}

/* Rod */
.pole::before {
  content: '';
  position: absolute;
  bottom: 0;
  top: calc(var(--lift) - var(--rh) * 0.4);
  left: 50%;
  width: var(--rod-w);
  transform: translateX(-50%);
  border-radius: 999px;
  background: linear-gradient(90deg, var(--rod-dark), var(--rod) 40%, #e3f2f9 55%, var(--rod-dark));
  z-index: -1;
}

.board.mini .pole::before {
  top: calc(var(--rh) * -0.4);
}

.board.main .pole:hover::before,
.pole.target::before {
  background: linear-gradient(90deg, #8cc3dd, #cde9f5 45%, #fff 55%, #8cc3dd);
}

.pole.target::after,
.pole.invalid::after {
  content: '';
  position: absolute;
  inset: calc(var(--lift) - 6px) -4px -2px;
  border-radius: 12px;
  border: 3px dashed var(--blue);
  pointer-events: none;
}

.pole.invalid::after {
  border-color: #e04a6a;
}

.pole-num {
  position: absolute;
  bottom: calc(var(--rh) * -0.55);
  font-size: 12px;
  color: var(--navy);
  opacity: 0.5;
  z-index: 2;
  pointer-events: none;
}

.board.mini .pole-num {
  display: none;
}

.ring {
  pointer-events: none; /* the pole is always the touch target */
  width: 100%;
  height: var(--rh);
  border-radius: calc(var(--rh) * 0.3);
  flex: none;
  position: relative;
  box-shadow:
    inset 0 -2px 0 rgba(0, 0, 0, 0.12),
    inset 0 2px 0 rgba(255, 255, 255, 0.35);
  transition: transform 0.12s ease-out;
}

.board.mini .ring {
  border-radius: 3px;
  box-shadow: inset 0 -1px 0 rgba(0, 0, 0, 0.15);
}

/* Each color carries its own texture, like the physical pieces, so the board
   stays readable without relying on hue alone. */
.ring.c0 {
  background:
    repeating-linear-gradient(90deg, transparent 0 18%, rgba(0, 40, 90, 0.18) 18% 24%),
    linear-gradient(90deg, rgba(255, 255, 255, 0.25), transparent 35%, transparent 70%, rgba(0, 0, 0, 0.15)),
    var(--blue);
}

.ring.c1 {
  background:
    repeating-linear-gradient(180deg, rgba(150, 110, 0, 0.25) 0 1px, transparent 1px 4px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.35), transparent 35%, transparent 70%, rgba(0, 0, 0, 0.12)),
    var(--yellow);
}

.ring.c2 {
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.4), transparent 30%, transparent 65%, rgba(0, 0, 0, 0.15)),
    var(--green);
}

.ring.c3 {
  background:
    linear-gradient(180deg, transparent 0 46%, rgba(90, 0, 40, 0.3) 46% 54%, transparent 54%),
    linear-gradient(90deg, rgba(255, 255, 255, 0.3), transparent 35%, transparent 70%, rgba(0, 0, 0, 0.15)),
    var(--pink);
}

.board.mini .ring.c0,
.board.mini .ring.c1,
.board.mini .ring.c3 {
  background-size: auto;
}

/* A finished stack: full and one color. */
.board.main .pole.done .pole-num {
  opacity: 1;
  color: #3f7a10;
  font-weight: 700;
}

.board.main .pole.done .pole-num::after {
  content: ' ✓';
}

.ring.lifted {
  position: absolute;
  top: 0;
  z-index: 3;
  box-shadow:
    0 8px 14px rgba(0, 0, 0, 0.2),
    inset 0 -2px 0 rgba(0, 0, 0, 0.12),
    inset 0 2px 0 rgba(255, 255, 255, 0.35);
  animation: bob 1s ease-in-out infinite;
}

@keyframes bob {
  50% {
    transform: translateY(-3px);
  }
}

.board.shake {
  animation: shake 0.25s;
}

@keyframes shake {
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

/* ---------- Overlay ---------- */

.overlay {
  touch-action: manipulation;
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(255, 248, 231, 0.6);
  backdrop-filter: blur(3px);
  z-index: 10;
  padding: 16px;
}

.overlay-box {
  background: var(--panel);
  border-radius: 24px;
  padding: 24px 28px;
  box-shadow: var(--shadow);
  text-align: center;
  min-width: min(360px, 100%);
}

.overlay-box h2 {
  margin: 0 0 12px;
  font-size: 30px;
  color: var(--navy);
}

.countdown {
  font-size: 96px;
  font-weight: 700;
  color: var(--pink);
  line-height: 1;
}

.countdown:empty {
  display: none;
}

.result-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 10px;
  font-variant-numeric: tabular-nums;
}

.result-table th {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  font-weight: 600;
  padding: 4px 8px;
}

.result-table td {
  padding: 8px;
  border-top: 2px solid var(--line);
}

.result-table td:first-child {
  color: var(--muted);
  font-weight: 600;
  width: 1.5em;
}

.result-table td:nth-child(2) {
  text-align: left;
  font-weight: 600;
}

.result-table tr.win td:nth-child(2)::before {
  content: '★ ';
  color: #e5b800;
}

#result .btn {
  width: 100%;
  margin-top: 6px;
}

#rematchHint {
  margin-top: 8px;
}

#result .btn-link {
  width: auto;
  margin-top: 4px;
}

.result-table td:nth-child(2) {
  max-width: 9em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.result-table td {
  white-space: nowrap;
}

/* ---------- Toast ---------- */

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  background: var(--ink);
  color: #fff;
  padding: 10px 16px;
  border-radius: 12px;
  z-index: 20;
  max-width: calc(100vw - 32px);
}

/* ---------- Responsive ---------- */

/* Large screens: scale the board up to use the space. */
@media (min-width: 1100px) and (min-height: 760px) {
  :root {
    --rh: clamp(26px, calc((100vh - 330px) / 12), 36px);
    --rw: calc(var(--rh) * 2.6);
    --gap: 14px;
  }
}

@media (max-width: 900px) {
  .game-grid {
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
      'card opp'
      'me me';
    gap: 12px;
  }

  .card-wrap {
    grid-area: card;
  }

  /* Never taller than the challenge card beside it: the zero height keeps this
     panel from sizing the row, and min-height stretches it to the card's height. */
  .opp-side {
    grid-area: opp;
    height: 0;
    min-height: 100%;
    overflow: hidden;
  }

  /* A single opponent keeps a mini board, sized to fit beside the card. */
  .opp-list[data-count='1'] .board.mini.opp-board {
    --rh: 6px;
  }

  .opp-list[data-count='1'] .opp-stats {
    display: none;
  }

  .opp-list[data-count='1'] .progress {
    height: 6px;
  }

  /* Standings order: show the top 3 only. */
  .opp-list .opp:nth-child(n + 4) {
    display: none;
  }

  .my-side {
    grid-area: me;
  }

  .board.mini {
    --rh: 7px;
    --rw: min(22px, calc((50vw - 60px) / 6 - 4px));
    --gap: 3px;
  }

  .board.mini.opp-board {
    --rh: 7px;
    --rw: min(22px, calc((50vw - 60px) / 6 - 4px));
  }

  /* Phones with several opponents: a compact standings list, no boards. */
  .opp-list:not([data-count='1']) {
    gap: 6px;
  }

  .opp-list:not([data-count='1']) .opp-board,
  .opp-list:not([data-count='1']) .opp-stats {
    display: none;
  }

  .opp-list:not([data-count='1']) .opp + .opp {
    padding-top: 6px;
  }

  .opp-list:not([data-count='1']) .progress {
    height: 6px;
  }

  .opp-side > .label {
    display: none;
  }

  .target-card,
  .opp-side {
    padding: 8px;
  }

  .card-head {
    font-size: 11px;
  }

  .card-diff {
    font-size: 14px;
  }
}

@media (max-width: 520px) {
  :root {
    --rh: clamp(18px, calc((100dvh - 400px) / 12), 26px);
    --gap: 6px;
  }

  .hud {
    gap: 14px;
    padding: 8px 14px;
  }

  .hud b {
    font-size: 18px;
  }

  .opp-stats {
    font-size: 12px;
  }

  .overlay-box {
    padding: 20px 14px;
  }

  .result-table th,
  .result-table td {
    padding: 6px 4px;
    font-size: 15px;
  }
}