/* ===== 全屏容器 ===== */
#app {
  width: 100%;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  position: relative;
  overflow: hidden;
}

/* ===== 启动画面 ===== */
.splash {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding: var(--spacing-xl);
  gap: var(--spacing-lg);
}
.splash.hidden { display: none; }
.splash-title {
  font-size: 3rem;
  font-weight: 300;
  letter-spacing: 0.5em;
  color: var(--text-primary);
}
.splash-subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
  letter-spacing: 0.3em;
  margin-bottom: var(--spacing-xl);
}
.splash-btn {
  width: 80%;
  max-width: 280px;
  padding: 14px;
  border-radius: 8px;
  font-size: 1rem;
  color: var(--bg-primary);
  background: var(--text-accent);
  transition: var(--transition-fast);
}
.splash-btn:active { opacity: 0.8; }
.splash-btn.secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

/* ===== 游戏主界面 ===== */
.game {
  display: flex;
  flex-direction: column;
  height: 100%;
}
.game.hidden { display: none; }

/* ===== 顶部栏 ===== */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--topbar-height);
  padding: 0 var(--spacing-sm);
  padding-top: var(--safe-top);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--divider-color);
  flex-shrink: 0;
}
.topbar-btn {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  color: var(--text-secondary);
  border-radius: 6px;
}
.topbar-btn:active { background: var(--bg-hover); }
.topbar-title {
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-align: center;
}
.topbar-title:first-of-type { color: var(--text-accent); }

/* ===== 对话区域（核心） ===== */
.dialog-area {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--spacing-md);
  padding-bottom: var(--spacing-lg);
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}

/* ===== 对话行 ===== */
.dialog-line {
  margin-bottom: var(--spacing-md);
  line-height: 1.75;
  font-size: var(--dialog-font-size, 1rem);
  word-break: break-word;
  white-space: pre-wrap;
  animation: fadeIn 0.3s ease;
}
.dialog-line .speaker {
  display: block;
  font-size: 0.8rem;
  color: var(--text-accent);
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
}
.dialog-line.system {
  color: var(--text-system);
  font-size: 0.85rem;
  font-family: var(--font-mono);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-card);
  border-left: 3px solid var(--text-system);
  border-radius: 4px;
}
.dialog-line.narration {
  color: var(--text-primary);
  font-size: 1rem;
}
.dialog-line.dialogue {
  color: var(--text-primary);
}
.dialog-line.ending-title {
  color: var(--text-accent);
  font-size: 1.3rem;
  text-align: center;
  padding: var(--spacing-xl) 0;
  font-weight: 300;
  letter-spacing: 0.3em;
}

/* 段落分隔线 */
.dialog-separator {
  height: 1px;
  background: var(--divider-color);
  margin: var(--spacing-lg) 0;
}

/* 光标的闪烁光标 */
.typing-cursor::after {
  content: '▊';
  animation: blink 0.8s step-end infinite;
  color: var(--text-accent);
}
@keyframes blink {
  50% { opacity: 0; }
}

/* ===== 底部操作栏 ===== */
.bottombar {
  height: var(--bottombar-height);
  display: flex;
  align-items: center;
  justify-content: center;
  padding-bottom: var(--safe-bottom);
  background: var(--bg-secondary);
  border-top: 1px solid var(--divider-color);
  flex-shrink: 0;
}
.bottombar-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

/* ===== 选项弹窗 ===== */
.choice-overlay {
  position: absolute;
  inset: 0;
  background: var(--bg-overlay);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-lg);
  z-index: 100;
  animation: fadeIn 0.3s ease;
}
.choice-overlay.hidden { display: none; }
.choice-prompt {
  font-size: 0.95rem;
  color: var(--text-accent);
  margin-bottom: var(--spacing-md);
  text-align: center;
  letter-spacing: 0.1em;
}
.choice-list {
  width: 100%;
  max-width: 380px;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}
.choice-btn {
  padding: 14px var(--spacing-md);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  text-align: left;
  font-size: 0.95rem;
  line-height: 1.6;
  transition: var(--transition-fast);
}
.choice-btn:active {
  background: var(--bg-hover);
  border-color: var(--text-accent);
}
.choice-btn .hint {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ===== 场景切换遮罩 ===== */
.scene-transition {
  position: absolute;
  inset: 0;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  animation: fadeIn 0.5s ease;
}
.scene-transition.hidden { display: none; }
.scene-transition-text {
  font-size: 1.1rem;
  color: var(--text-accent);
  letter-spacing: 0.2em;
  text-align: center;
  padding: var(--spacing-xl);
}

/* ===== 菜单面板 ===== */
.menu-panel {
  position: absolute;
  inset: 0;
  background: var(--bg-overlay);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-sm);
  z-index: 200;
}
.menu-panel.hidden { display: none; }
.menu-item {
  width: 70%;
  max-width: 240px;
  padding: 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 0.95rem;
  text-align: center;
}
.menu-item:active { background: var(--bg-hover); }

/* ===== 设置面板 ===== */
.settings-panel {
  position: absolute;
  inset: 0;
  background: var(--bg-overlay);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-lg);
  z-index: 200;
}
.settings-panel.hidden { display: none; }
.settings-row {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-secondary);
}
.settings-speed {
  display: flex;
  gap: var(--spacing-sm);
}
.settings-speed button {
  padding: 8px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 0.85rem;
  transition: var(--transition-fast);
}
.settings-speed button.active {
  border-color: var(--text-accent);
  color: var(--text-accent);
}
.settings-close {
  margin-top: var(--spacing-md);
  padding: 10px 32px;
  background: var(--text-accent);
  color: var(--bg-primary);
  border-radius: 6px;
}

/* ===== 章节选择 ===== */
.chapter-select {
  position: absolute;
  inset: 0;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  padding: var(--spacing-lg);
  padding-top: calc(var(--topbar-height) + var(--safe-top));
  z-index: 40;
}
.chapter-select.hidden { display: none; }
.chapter-select h2 {
  color: var(--text-accent);
  text-align: center;
  margin-bottom: var(--spacing-lg);
  font-weight: 300;
  letter-spacing: 0.3em;
}
.chapter-list {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}
.chapter-card {
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition-fast);
}
.chapter-card:active { background: var(--bg-hover); }
.chapter-card .chapter-num {
  font-size: 0.75rem;
  color: var(--text-accent);
  display: block;
  margin-bottom: 4px;
}
.chapter-card .chapter-title {
  font-size: 1rem;
  color: var(--text-primary);
}
.chapter-card .chapter-status {
  font-size: 0.75rem;
  color: var(--text-muted);
  float: right;
}
.chapter-back {
  padding: 12px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  text-align: center;
}

/* ===== 结局操作按钮（显示在对话区域底部） ===== */
.ending-actions {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-md);
  margin-top: var(--spacing-lg);
  border-top: 1px solid var(--divider-color);
}
.ending-actions .ending-title {
  font-size: 1.2rem;
  color: var(--text-accent);
  font-weight: 300;
  letter-spacing: 0.3em;
  margin-bottom: var(--spacing-lg);
}
.ending-btn {
  width: 80%;
  max-width: 260px;
  text-align: center;
  margin-bottom: var(--spacing-sm);
}

/* ===== 通用动画 ===== */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes slideUp {
  from { transform: translateY(10px); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}
.shake { animation: shake 0.3s ease; }