*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0a0a0a; --surface: #111; --surface2: #1a1a1a;
  --border: #222; --border2: #333; --text: #f0f0f0; --muted: #555;
  --green: #538d4e; --yellow: #b59f3b; --gray: #3a3a3c;
  --key-bg: #818384; --key-text: #fff;
}

body {
  background: var(--bg); color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  min-height: 100vh; display: flex; flex-direction: column; align-items: center;
}

.page {
  width: 100%; max-width: 500px;
  padding: 1.5rem 1rem 5rem;
  display: flex; flex-direction: column; gap: 1rem;
}

@media (min-width: 700px) { .page { max-width: 700px; } }

/* ── Header ────────────────────────────────────────────────────────────────── */
header { display: flex; flex-direction: column; gap: 0.3rem; }
.header-top { display: flex; align-items: center; justify-content: space-between; }
.back-link { color: var(--muted); text-decoration: none; font-size: 0.78rem; letter-spacing: 0.05em; transition: color 0.15s; }
.back-link:hover { color: var(--text); }
h1 { font-size: 1.4rem; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase; }
.subtitle { color: var(--muted); font-size: 0.75rem; letter-spacing: 0.04em; }

/* ── Seed widget ───────────────────────────────────────────────────────────── */
.seed-widget { position: relative; }
.seed-btn { background: none; border: none; cursor: pointer; padding: 0.2rem 0.3rem; color: var(--muted); font-size: 1.1rem; line-height: 1; transition: color 0.15s; }
.seed-btn:hover { color: var(--text); }
.seed-popup { display: none; position: absolute; right: 0; top: calc(100% + 6px); background: var(--surface); border: 1px solid var(--border2); border-radius: 8px; padding: 0.7rem 0.9rem; min-width: 220px; z-index: 100; box-shadow: 0 4px 20px rgba(0,0,0,0.6); }
.seed-popup.open { display: block; }
.seed-popup-label { font-size: 0.58rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); margin-bottom: 0.35rem; }
.seed-popup-code { font-family: 'Courier New', Courier, monospace; font-size: 0.82rem; letter-spacing: 0.12em; color: var(--text); word-break: break-all; }

/* ── Messages ──────────────────────────────────────────────────────────────── */
.msg { text-align: center; color: var(--muted); font-size: 0.85rem; }
.msg.error { color: #f87171; }

/* ── Board ─────────────────────────────────────────────────────────────────── */
.board-wrap { display: flex; justify-content: center; }
.board { display: grid; grid-template-rows: repeat(6, 1fr); gap: 5px; width: min(350px, 85vw); height: min(420px, 102vw); }
.board-row { display: grid; grid-template-columns: repeat(5, 1fr); gap: 5px; }

.tile {
  display: flex; align-items: center; justify-content: center;
  font-size: clamp(1.2rem, 5vw, 1.75rem); font-weight: 800; text-transform: uppercase;
  border: 2px solid var(--border2); border-radius: 3px;
  user-select: none;
  transition: border-color 0.05s;
}
.tile[data-letter] { border-color: var(--border); }
.tile.active { border-color: #555; }

/* Flip animation */
.tile.flip { animation: flip 0.5s ease forwards; }
@keyframes flip {
  0%   { transform: rotateX(0);    background: var(--bg); }
  49%  { transform: rotateX(-90deg); }
  50%  { transform: rotateX(-90deg); }
  100% { transform: rotateX(0); }
}

/* Bounce on input */
.tile.bounce { animation: bounce 0.1s ease; }
@keyframes bounce { 0%,100% { transform: scale(1); } 50% { transform: scale(1.12); } }

/* Shake on invalid */
.board-row.shake { animation: shake 0.4s ease; }
@keyframes shake { 0%,100% { transform: translateX(0); } 20%,60% { transform: translateX(-4px); } 40%,80% { transform: translateX(4px); } }

/* Tile states (set after flip) */
.tile.correct { background: var(--green); border-color: var(--green); color: #fff; }
.tile.present { background: var(--yellow); border-color: var(--yellow); color: #fff; }
.tile.absent  { background: var(--gray);   border-color: var(--gray);   color: #fff; }

/* ── Keyboard ──────────────────────────────────────────────────────────────── */
.keyboard { display: flex; flex-direction: column; gap: 6px; align-items: center; margin-top: 0.5rem; }
.key-row { display: flex; gap: 5px; }

.key {
  height: 56px; min-width: 40px; padding: 0 6px;
  background: var(--key-bg); color: var(--key-text);
  border: none; border-radius: 4px; cursor: pointer;
  font-size: 0.82rem; font-weight: 700; text-transform: uppercase;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.2s, color 0.2s;
  user-select: none;
}
.key.wide { min-width: 64px; font-size: 0.72rem; }
.key.correct { background: var(--green); color: #fff; }
.key.present { background: var(--yellow); color: #fff; }
.key.absent  { background: var(--gray);   color: #fff; }

/* ── Hard mode ─────────────────────────────────────────────────────────────── */
.hard-badge {
  font-size: 0.6rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 0.2rem 0.5rem; border-radius: 4px; flex-shrink: 0;
  border: 1px solid #ef4444; color: #ef4444; background: #1a0808;
}

.hard-timer-row {
  display: none; align-items: center; gap: 0.6rem;
}
.hard-timer-row.active { display: flex; }
.hard-timer-track { flex: 1; height: 6px; background: var(--border2); border-radius: 3px; overflow: hidden; }
.hard-timer-fill  { height: 100%; background: #ef4444; border-radius: 3px; transition: width 1s linear; }
.hard-timer-num   { font-size: 0.8rem; font-weight: 700; color: #ef4444; width: 28px; text-align: right; font-variant-numeric: tabular-nums; }

/* Locked row (hard mode 6th row) */
.board-row.hard-locked { position: relative; opacity: 0.25; pointer-events: none; }
.hard-locked-label {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  font-size: 0.6rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase;
  color: #ef4444; background: rgba(10,10,10,0.7); border-radius: 3px;
  opacity: 1 !important;
}

/* ── Toast ─────────────────────────────────────────────────────────────────── */
.toast-wrap { position: fixed; top: 4rem; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 0.5rem; z-index: 200; pointer-events: none; }
.toast {
  background: var(--text); color: var(--bg);
  padding: 0.5rem 1.1rem; border-radius: 6px;
  font-size: 0.82rem; font-weight: 700;
  opacity: 0; transform: translateY(-8px);
  transition: opacity 0.15s, transform 0.15s;
}
.toast.show { opacity: 1; transform: translateY(0); }

/* ── Results ───────────────────────────────────────────────────────────────── */
.result-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 12px; padding: 1.5rem; text-align: center;
  display: none; flex-direction: column; gap: 1rem; align-items: center;
}
.result-card.show { display: flex; }
.result-title { font-size: 1.1rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; }
.result-word  { font-size: 0.75rem; color: var(--muted); }
.result-word strong { color: var(--text); letter-spacing: 0.1em; text-transform: uppercase; }
.result-emoji { font-family: monospace; font-size: 1.1rem; line-height: 1.8; letter-spacing: 0.05em; white-space: pre; }
.btn-share {
  background: var(--green); color: #fff; border: none; border-radius: 8px;
  padding: 0.7rem 1.5rem; font-size: 0.85rem; font-weight: 700;
  cursor: pointer; letter-spacing: 0.05em; text-transform: uppercase;
  transition: opacity 0.15s;
}
.btn-share:hover { opacity: 0.88; }

/* ── Seed timer ────────────────────────────────────────────────────────────── */
.seed-timer { text-align: center; font-size: 0.68rem; letter-spacing: 0.06em; color: var(--muted); padding-top: 1.25rem; border-top: 1px solid var(--border); margin-top: 0.5rem; }
.seed-timer strong { color: var(--text); font-variant-numeric: tabular-nums; }