/* === 限时挑战 === */
#view-game-speed {
  background: var(--bg-primary);
}

#speed-game-container {
  height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Topbar */
.speed-topbar {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 10px 20px;
  background: var(--bg-card);
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.speed-timer {
  font-size: 2.4rem;
  font-weight: 900;
  font-family: var(--font-mono);
  color: var(--accent-orange);
  min-width: 100px;
}

.speed-timer.warning { color: var(--incorrect); animation: timerPulse 0.5s infinite; }

@keyframes timerPulse {
  50% { transform: scale(1.08); }
}

.speed-stats {
  display: flex;
  gap: 24px;
  margin-left: auto;
}

.speed-stat {
  text-align: center;
}

.speed-stat .label {
  font-size: 0.7rem;
  color: var(--text-muted);
  display: block;
}

.speed-stat .value {
  font-size: 1.3rem;
  font-weight: 700;
  display: block;
}

.speed-stat .unit { font-size: 0.7rem; font-weight: 400; color: var(--text-muted); }

/* Target area (reuses .practice-target .char styles from practice.css) */
#speed-target {
  flex: 1;
  display: flex;
  flex-wrap: wrap;
  align-content: center;
  justify-content: center;
  padding: 24px 40px;
  font-family: var(--font-mono);
  font-size: clamp(1.7rem, 3.6vw, 2.5rem);
  font-weight: 600;
  line-height: 1.8;
  letter-spacing: 0.5px;
  overflow-y: auto;
}

#speed-target .char { position: relative; transition: color 0.1s; padding: 0 1px; }
#speed-target .char.correct { color: var(--correct); }
#speed-target .char.incorrect { color: var(--incorrect); text-decoration: underline wavy; }
#speed-target .char.current { background: rgba(9,132,227,0.15); border-radius: 4px; border-left: 3px solid var(--accent-blue); animation: blink 1s step-end infinite; }
#speed-target .char.pending { color: #2d3436; }

/* Countdown overlay */
.speed-countdown {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-size: 8rem;
  font-weight: 900;
  color: var(--accent-orange);
  pointer-events: none;
}

/* Start */
.speed-start-screen {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
  z-index: 10;
  text-align: center;
  padding: 20px;
}

.speed-title { font-size: 2.5rem; font-weight: 900; color: var(--accent-orange); margin-bottom: 10px; }
.speed-subtitle { color: var(--text-secondary); font-size: 1rem; margin-bottom: 24px; }

.speed-options {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
}

.speed-opt-btn {
  padding: 10px 20px;
  border: 2px solid var(--border);
  border-radius: 12px;
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
}

.speed-opt-btn.active {
  border-color: var(--accent-orange);
  background: linear-gradient(135deg, #fff5e6, #ffe0cc);
  color: var(--accent-orange);
}

.speed-start-btn {
  padding: 14px 48px;
  font-size: 1.2rem;
  font-weight: 800;
  border: none;
  border-radius: 50px;
  background: linear-gradient(135deg, var(--accent-orange), #fdcb6e);
  color: #fff;
  cursor: pointer;
  transition: transform 0.2s;
  box-shadow: 0 4px 16px rgba(225,112,85,0.3);
}

.speed-start-btn:hover { transform: scale(1.05); }

/* Result */
.speed-result-screen {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.5);
  z-index: 20;
}

.speed-result-card {
  background: var(--bg-card);
  border-radius: 20px;
  padding: 36px;
  text-align: center;
  min-width: 320px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.2);
}

.speed-result-card h2 { font-size: 1.8rem; margin-bottom: 20px; }

.speed-result-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 20px;
}

.speed-result-stat {
  background: #f8f9fa;
  border-radius: 10px;
  padding: 12px;
}

.speed-result-stat .label { font-size: 0.75rem; color: var(--text-muted); display: block; margin-bottom: 2px; }
.speed-result-stat .value { font-size: 1.3rem; font-weight: 700; }

.speed-result-stat .value.highlight { color: var(--accent-orange); }

.speed-best { font-size: 0.9rem; color: var(--accent-green); margin-bottom: 16px; }

.speed-result-actions { display: flex; gap: 12px; justify-content: center; }

.speed-btn-retry {
  padding: 12px 32px; border: none; border-radius: 12px;
  background: var(--accent-orange); color: #fff;
  font-size: 1rem; font-weight: 700; cursor: pointer;
}

.speed-btn-back {
  padding: 12px 32px; border: 2px solid var(--border); border-radius: 12px;
  background: transparent; color: var(--text-secondary);
  font-size: 1rem; font-weight: 600; cursor: pointer;
}

.speed-scope { margin-bottom: 20px; display: flex; flex-direction: column; align-items: center; gap: 6px; }
.speed-scope label { font-size: 0.85rem; color: var(--text-secondary); font-weight: 600; }
.speed-scope select {
  padding: 8px 16px; font-size: 0.95rem; border-radius: 10px;
  border: 1px solid var(--border); background: var(--bg-card); min-width: 200px;
}

@media (max-width: 600px) {
  .speed-timer { font-size: 1.8rem; }
  .speed-stats { gap: 14px; }
  #speed-target { padding: 16px; font-size: 1.3rem; }
}