:root {
  --bg: #0f1a2e;
  --card: #162338;
  --line: #243552;
  --text: #eef3fb;
  --muted: #8fa0bc;
  --accent: #3d8bfd;
  --red: #e74c5e;
  --yellow: #f0c14a;
  --board: #1e5aa8;
  --board-dark: #164785;
  --hole: #0b1526;
  --good: #3dbf7a;
  --bad: #e86a7a;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: radial-gradient(ellipse at top, #1a2b48, var(--bg));
  color: var(--text);
}
#app { min-height: 100%; width: 100%; }

.shell {
  min-height: 100%; max-width: 520px; margin: 0 auto;
  padding: 14px 16px 24px; display: flex; flex-direction: column;
}
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 14px; padding: 14px;
}
.muted { color: var(--muted); font-size: 13px; }
.h { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }
input {
  width: 100%; padding: 12px; border-radius: 10px; border: 1px solid var(--line);
  background: #0e1728; color: var(--text); font-size: 16px; margin: 6px 0;
}
button {
  width: 100%; padding: 12px; border-radius: 10px; border: 0;
  background: var(--accent); color: #fff; font-size: 15px; font-weight: 700;
  margin-top: 8px; cursor: pointer;
}
button.sec { background: #2a3a55; color: var(--text); }
button:disabled { opacity: .4; cursor: not-allowed; }
.brand { font-weight: 800; }
.hero { text-align: center; padding: 10px 0 4px; }
.hero-ico { font-size: 42px; line-height: 1; }
.code { font-size: 28px; font-weight: 800; letter-spacing: .14em; text-align: center; margin: 4px 0; }
.err { color: var(--bad); font-size: 13px; min-height: 16px; }
.row { display: flex; align-items: center; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--line); }
.row:last-child { border-bottom: 0; }
.tiers { display: flex; gap: 6px; }
.tier {
  flex: 1; padding: 8px; border-radius: 8px; border: 1px solid var(--line);
  background: #0e1728; color: var(--text); font-size: 13px; font-weight: 600; cursor: pointer; margin: 0;
}
.tier.sel { border-color: var(--accent); color: var(--accent); background: rgba(61,139,253,.12); }
.toast {
  position: fixed; top: 12px; left: 50%; transform: translateX(-50%);
  background: rgba(15,26,46,.96); border: 1px solid var(--accent); color: var(--text);
  padding: 8px 16px; border-radius: 16px; font-size: 13px; font-weight: 600; z-index: 200;
  pointer-events: none; transition: opacity .5s; white-space: nowrap;
}
.qr-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.85);
  display: flex; align-items: center; justify-content: center; z-index: 50;
}
.qr-box {
  background: var(--card); border: 1px solid var(--line); border-radius: 16px;
  padding: 20px; text-align: center; max-width: 300px; width: 90%;
}
.qr-box img { display: block; margin: 10px auto; border-radius: 8px; background: #fff; padding: 6px; }
.swatch {
  width: 14px; height: 14px; border-radius: 50%; display: inline-block;
  border: 1px solid rgba(255,255,255,.25); vertical-align: -2px; margin-right: 6px;
}
.swatch.red { background: var(--red); }
.swatch.yellow { background: var(--yellow); }

/* ===== Play ===== */
.play {
  min-height: 100%; max-width: 520px; margin: 0 auto;
  padding: 10px 12px 16px; display: flex; flex-direction: column; gap: 10px;
}
.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
}
.score {
  display: flex; gap: 8px; align-items: center;
}
.pill {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 6px 10px; text-align: center; min-width: 64px;
}
.pill .n { font-size: 18px; font-weight: 800; }
.pill.you { border-color: var(--accent); }
.turn-banner {
  text-align: center; font-weight: 700; font-size: 14px;
  padding: 8px; border-radius: 10px; background: var(--card); border: 1px solid var(--line);
}
.turn-banner.yours { border-color: var(--accent); color: #9ec1ff; }

.board-wrap {
  position: relative; margin: 0 auto; width: min(100%, 420px);
}
.col-hints {
  display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; margin-bottom: 6px;
  min-height: 28px;
}
.col-hint {
  height: 26px; border-radius: 999px; border: 0; margin: 0; padding: 0;
  background: transparent; position: relative;
}
.col-hint.legal { cursor: pointer; }
.col-hint.legal::after {
  content: ''; position: absolute; left: 50%; top: 50%;
  width: 18px; height: 18px; margin: -9px 0 0 -9px; border-radius: 50%;
  background: rgba(255,255,255,.18); border: 2px solid rgba(255,255,255,.35);
}
.col-hint.legal.red::after { background: var(--red); border-color: #ff8a96; opacity: .85; }
.col-hint.legal.yellow::after { background: var(--yellow); border-color: #ffe08a; opacity: .85; }
.col-hint:disabled { opacity: .25; cursor: default; }

.board {
  background: linear-gradient(180deg, var(--board), var(--board-dark));
  border-radius: 16px; padding: 10px; border: 3px solid #0d3a78;
  box-shadow: 0 10px 28px rgba(0,0,0,.35);
  display: grid; grid-template-columns: repeat(7, 1fr); grid-template-rows: repeat(6, 1fr);
  gap: 6px; aspect-ratio: 7 / 6;
}
.cell {
  position: relative; border-radius: 50%; background: var(--hole);
  box-shadow: inset 0 2px 4px rgba(0,0,0,.55);
  aspect-ratio: 1;
}
.disc {
  position: absolute; inset: 6%; border-radius: 50%;
  box-shadow: inset 0 3px 5px rgba(255,255,255,.28), 0 2px 3px rgba(0,0,0,.35);
}
.disc.red { background: radial-gradient(circle at 35% 30%, #ff8b98, var(--red) 58%, #a61f32); }
.disc.yellow { background: radial-gradient(circle at 35% 30%, #ffe08a, var(--yellow) 58%, #b8861a); }
.disc.drop { animation: drop-in .28s cubic-bezier(.2,.9,.3,1); }
.disc.win {
  z-index: 2;
  outline: 3px solid #fff;
  animation: win-glow .65s ease-in-out infinite alternate;
}
@keyframes win-glow {
  from {
    box-shadow: inset 0 3px 5px rgba(255,255,255,.28), 0 0 0 2px #ffd76a, 0 0 10px rgba(255,215,106,.55);
    filter: brightness(1.05);
  }
  to {
    box-shadow: inset 0 3px 5px rgba(255,255,255,.4), 0 0 0 3px #fff4c2, 0 0 22px rgba(255,230,120,.95);
    filter: brightness(1.22);
  }
}
@keyframes drop-in {
  from { transform: translateY(-120%); opacity: .3; }
  to { transform: translateY(0); opacity: 1; }
}

.actions { display: flex; gap: 8px; }
.actions button { margin: 0; }

.overlay-end {
  position: absolute; inset: 0; background: rgba(0,0,0,.72);
  display: flex; align-items: center; justify-content: center; z-index: 10;
  border-radius: 16px;
}
.overlay-end .box {
  background: var(--card); border: 1px solid var(--accent); border-radius: 14px;
  padding: 18px 22px; text-align: center; max-width: 280px; width: 86%;
}
.overlay-end h2 { margin: 0 0 6px; font-size: 20px; }
.overlay-end p { margin: 0 0 12px; color: var(--muted); font-size: 13px; }