* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

:root {
  --bg: #f8f8fa;
  --card: #ffffff;
  --border: #dddde4;
  --text: #2a2a3e;
  --text-dim: #6b6b80;
  --accent: #009878;
  --danger: #d03040;
  --white: #1a1a2e;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, Arial, Helvetica, sans-serif;
  font-size: 18px;
}

.hidden { display: none !important; }

.back-link {
  position: fixed; top: 14px; left: 16px; z-index: 50;
  font-size: 13px; font-weight: 600; color: var(--text-dim);
  text-decoration: none; letter-spacing: 1px;
  padding-top: var(--safe-top);
}

#app {
  max-width: 480px;
  margin: 0 auto;
  padding: 20px 20px calc(20px + var(--safe-bottom));
  padding-top: calc(20px + var(--safe-top));
  min-height: 100dvh;
}

/* ─── Intro Screen ──────────────────────────────────────────── */
#intro-screen {
  text-align: center;
  padding-top: 60px;
}

.title-icon { font-size: 48px; margin-bottom: 8px; }

.game-title {
  font-size: 52px;
  font-weight: 900;
  letter-spacing: 6px;
  color: var(--white);
}

.tagline {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--text-dim);
  margin-top: 8px;
  margin-bottom: 28px;
}

.rules-box {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 24px;
  margin-bottom: 28px;
  text-align: left;
}

.rules-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6px 16px;
  font-size: 15px;
  color: var(--text);
  margin-bottom: 16px;
}

.rule-pts {
  font-weight: 800;
  color: var(--accent);
}

.warn {
  font-size: 13px;
  color: var(--danger);
  font-weight: 600;
  text-align: center;
}

.btn-main {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 16px 52px;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 2px;
  cursor: pointer;
}
.btn-main:active { opacity: 0.85; transform: scale(0.97); }

.best-score {
  font-size: 13px;
  color: var(--text-dim);
  margin-top: 16px;
  letter-spacing: 1px;
  font-weight: 600;
}

/* ─── Game Screen ───────────────────────────────────────────── */
.game-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0 12px;
  margin-top: 28px;
}

.header-title {
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 3px;
  color: var(--white);
}

.score-label {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-dim);
  transition: transform 0.2s;
}
.score-label #score-num {
  font-size: 28px;
  font-weight: 900;
  color: var(--accent);
}
.score-label.score-flash { animation: scorePop 0.4s ease; }
@keyframes scorePop { 50% { transform: scale(1.2); } }

.timer-bar {
  width: 100%;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}

.timer-fill {
  height: 100%;
  border-radius: 3px;
  background: var(--accent);
  transition: width 1s linear, background 0.3s;
}

.timer-num {
  text-align: right;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 4px;
}

/* ─── Letter Grid ───────────────────────────────────────────── */
.letter-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  margin: 8px 0;
}

.vg-cell {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card);
  border: 2px solid var(--border);
  border-radius: 10px;
  color: var(--white);
  font-family: 'Inter', Arial, Helvetica, sans-serif;
  font-size: clamp(18px, 5vw, 24px);
  font-weight: 800;
  cursor: pointer;
  transition: all 0.12s;
  user-select: none;
}

.vg-cell:active:not(.dead):not(.sel) {
  border-color: var(--accent);
  background: rgba(0, 152, 120, 0.08);
}

.vg-cell.sel {
  border-color: var(--accent);
  background: rgba(0, 152, 120, 0.12);
  color: var(--accent);
}

.vg-cell.dead {
  background: var(--bg);
  border-color: transparent;
  cursor: default;
}

.vg-cell.vanishing {
  animation: vanish 0.6s ease forwards;
}

@keyframes vanish {
  0% { transform: scale(1); opacity: 1; border-color: var(--danger); background: rgba(208, 48, 64, 0.12); }
  50% { transform: scale(1.1); opacity: 0.5; }
  100% { transform: scale(0); opacity: 0; }
}

/* ─── Word Bar ──────────────────────────────────────────────── */
.word-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
}

.current-word {
  flex: 1;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--accent);
  min-height: 30px;
  text-transform: uppercase;
}

.placeholder {
  color: var(--text-dim);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0;
}

.word-actions { display: flex; gap: 8px; }

.btn-sm {
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: 1px;
  transition: all 0.12s;
}

.btn-dim {
  background: var(--border);
  color: var(--text-dim);
}
.btn-dim:active:not([disabled]) { background: rgba(208, 48, 64, 0.08); color: var(--danger); }

.btn-accent {
  background: var(--accent);
  color: #fff;
}
.btn-accent:active:not([disabled]) { opacity: 0.85; }

.btn-sm:disabled { opacity: 0.25; cursor: default; }

/* ─── Messages ──────────────────────────────────────────────── */
.message {
  text-align: center;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 8px;
  animation: fadeMsg 0.2s ease;
  text-transform: uppercase;
}
.message.good { color: var(--accent); }
.message.bad { color: var(--danger); }
@keyframes fadeMsg { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; } }

/* ─── Found Words ───────────────────────────────────────────── */
.found-section {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
  max-height: 200px;
  overflow-y: auto;
}

.found-header {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--text-dim);
  margin-bottom: 8px;
}

.found-list { display: flex; flex-direction: column; gap: 4px; }

.found-empty { font-size: 14px; color: var(--text-dim); }

.found-item {
  display: flex;
  justify-content: space-between;
  font-size: 15px;
  padding: 4px 0;
  border-bottom: 1px solid var(--border);
  animation: slideIn 0.2s ease;
}
@keyframes slideIn { from { opacity: 0; transform: translateX(-8px); } to { opacity: 1; } }

.found-word { color: var(--text); font-weight: 600; letter-spacing: 1px; }
.found-pts { color: var(--accent); font-weight: 800; }

/* ─── Game Over ─────────────────────────────────────────────── */
#over-screen { text-align: center; padding-top: 80px; }

.gameover-heading {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 4px;
  color: var(--danger);
  margin-bottom: 16px;
}

.final-score {
  font-size: 72px;
  font-weight: 900;
  color: var(--accent);
  line-height: 1;
}

.final-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--text-dim);
  margin-bottom: 28px;
}

.best-words { margin-bottom: 28px; text-align: left; }
.best-words .best-hdr {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--text-dim);
  margin-bottom: 8px;
}
.best-words .best-row {
  display: flex;
  justify-content: space-between;
  font-size: 15px;
  font-weight: 600;
  padding: 5px 0;
  border-bottom: 1px solid var(--border);
}