:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #14141f;
  --bg-tertiary: #1e1e2e;
  --text-primary: #ffffff;
  --text-secondary: #a0a0b0;
  --text-muted: #606070;
  --accent: #00d4ff;
  --accent-secondary: #00ff88;
  --danger: #ff4466;
  --focus-ring: #00d4ff;
  --focus-glow: rgba(0, 212, 255, 0.4);
  --radius-md: 12px;
  --radius-sm: 8px;
}

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

html, body {
  width: 600px; height: 600px; overflow: hidden;
  background: #000;
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

#app { width: 100%; height: 100%; position: relative; }

.screen {
  width: 100%; height: 100%; position: absolute; top: 0; left: 0;
  display: flex; flex-direction: column;
  padding: 24px;
}

.screen.hidden { display: none; }

.focusable {
  transition: all 0.15s ease;
  border: 2px solid transparent;
  cursor: pointer;
  outline: none;
}

.focusable:focus {
  border-color: var(--focus-ring);
  box-shadow: 0 0 20px var(--focus-glow);
}

.hidden { display: none !important; }

/* Home */
.header { text-align: center; margin-top: 24px; margin-bottom: 24px; }
.title {
  font-size: 60px;
  font-weight: 800;
  letter-spacing: 10px;
  color: var(--accent);
  text-shadow: 0 0 24px rgba(0, 212, 255, 0.4);
}
.subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  margin-top: 12px;
  letter-spacing: 4px;
}

.menu {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 0 60px;
  flex: 1;
  justify-content: center;
}

.menu-btn {
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 22px;
  font-weight: 600;
  padding: 22px;
  border-radius: var(--radius-md);
  letter-spacing: 3px;
  min-height: 88px;
  font-family: inherit;
  width: 100%;
}

.menu-btn:focus { background: var(--bg-tertiary); }

.stats-footer {
  text-align: center;
  padding-top: 16px;
  color: var(--text-secondary);
  font-size: 14px;
  letter-spacing: 2px;
}

/* Categories */
.header-sm { text-align: center; margin-bottom: 20px; }
.header-sm h2 {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 4px;
  color: var(--accent);
}

.category-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  flex: 1;
  align-content: center;
}

.cat-btn {
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 18px;
  font-weight: 600;
  padding: 18px;
  border-radius: var(--radius-md);
  letter-spacing: 2px;
  min-height: 88px;
  font-family: inherit;
}

.cat-btn:focus { background: var(--bg-tertiary); }

.cat-footer { padding-top: 12px; }
.back-btn {
  width: 100%;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 16px;
  font-weight: 600;
  padding: 16px;
  border-radius: var(--radius-md);
  letter-spacing: 3px;
  min-height: 56px;
  font-family: inherit;
}
.back-btn:focus { background: var(--bg-tertiary); color: var(--text-primary); }

/* Game */
#game { padding: 14px 16px; gap: 6px; }

.game-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 4px;
}
.cat-label {
  font-size: 16px;
  color: var(--accent);
  letter-spacing: 3px;
  font-weight: 700;
}
.attempts-label {
  font-size: 14px;
  color: var(--text-secondary);
  letter-spacing: 2px;
}
.attempts-label #lives {
  color: var(--danger);
  font-weight: 800;
  font-size: 20px;
  margin-left: 6px;
}

.hangman-area {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 180px;
}

#hangman-svg { display: block; }

.word-display {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  min-height: 50px;
  padding: 4px 0;
}

.letter-slot {
  width: 36px;
  height: 48px;
  border-bottom: 3px solid var(--text-secondary);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  font-size: 28px;
  font-weight: 700;
  color: var(--accent-secondary);
  line-height: 1;
  padding-bottom: 4px;
}

.alphabet {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
  margin-top: 4px;
}

.letter-btn {
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 20px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  min-height: 48px;
  font-family: inherit;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 1px;
}

.letter-btn:focus { background: var(--bg-tertiary); }

.letter-btn.used-correct {
  background: rgba(0, 255, 136, 0.15);
  color: var(--accent-secondary);
  border-color: rgba(0, 255, 136, 0.3);
}

.letter-btn.used-wrong {
  background: rgba(255, 68, 102, 0.12);
  color: var(--danger);
  opacity: 0.55;
}

.letter-btn:disabled { cursor: default; }

/* Result */
.result-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  gap: 14px;
}

#result-title.win { color: var(--accent-secondary); }
#result-title.lose { color: var(--danger); }

.result-word-label {
  font-size: 14px;
  color: var(--text-secondary);
  letter-spacing: 3px;
}

.result-word {
  font-size: 42px;
  font-weight: 800;
  letter-spacing: 6px;
  color: var(--accent-secondary);
  word-break: break-all;
}

.result-category {
  font-size: 14px;
  color: var(--text-muted);
  letter-spacing: 3px;
}

.result-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 0 40px;
}

/* How to play */
.howto-body {
  flex: 1;
  padding: 0 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 18px;
}

.howto-body p {
  font-size: 18px;
  color: var(--text-primary);
  line-height: 1.5;
}

.howto-body .hl {
  color: var(--accent);
  font-weight: 700;
}

.howto-actions { padding: 0 40px; }