/* ==========================================================================
   工厂老板外贸出海实战手册 - 纯正 iOS 风格设计系统 (Cupertino Design)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Noto+Sans+SC:wght@400;500;600;700&display=swap');

:root {
  --ios-bg: #F2F2F7;
  --ios-card-bg: #FFFFFF;
  --ios-card-border: rgba(60, 60, 67, 0.08);
  --ios-text-primary: #1C1C1E;
  --ios-text-secondary: #8E8E93;
  --ios-blue: #007AFF;
  --ios-blue-light: #EBF5FF;
  --ios-green: #34C759;
  --ios-orange: #FF9500;
  --ios-red: #FF3B30;
  --ios-radius-lg: 20px;
  --ios-radius-md: 14px;
}

.dark {
  --ios-bg: #000000;
  --ios-card-bg: #1C1C1E;
  --ios-card-border: rgba(255, 255, 255, 0.12);
  --ios-text-primary: #FFFFFF;
  --ios-text-secondary: #98989D;
  --ios-blue: #0A84FF;
  --ios-blue-light: rgba(10, 132, 255, 0.15);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "PingFang SC", "Noto Sans SC", system-ui, sans-serif;
  background-color: var(--ios-bg);
  color: var(--ios-text-primary);
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  padding-bottom: env(safe-area-inset-bottom);
}

/* iOS 毛玻璃导航栏与卡片 */
.ios-glass {
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}
.dark .ios-glass {
  background-color: rgba(28, 28, 30, 0.85);
}

.ios-card {
  background-color: var(--ios-card-bg);
  border: 1px solid var(--ios-card-border);
  border-radius: var(--ios-radius-lg);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

/* iOS 分段控制器 (Segmented Control) */
.ios-segmented-control {
  background-color: rgba(118, 118, 128, 0.12);
  padding: 3px;
  border-radius: 12px;
  display: inline-flex;
}

.ios-segmented-btn {
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 500;
  border-radius: 9px;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  color: var(--ios-text-secondary);
}

.ios-segmented-btn.active {
  background-color: #FFFFFF;
  color: #000000;
  font-weight: 600;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.12);
}

.dark .ios-segmented-btn.active {
  background-color: #2C2C2E;
  color: #FFFFFF;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
}

/* iOS 原生点击微缩反馈 */
.ios-press {
  transition: transform 0.1s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.1s ease;
}
.ios-press:active {
  transform: scale(0.97);
  opacity: 0.85;
}

/* iOS 主功能胶囊按钮 */
.ios-btn-primary {
  background-color: var(--ios-blue);
  color: #FFFFFF;
  font-weight: 600;
  border-radius: var(--ios-radius-md);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.ios-btn-secondary {
  background-color: rgba(142, 142, 147, 0.14);
  color: var(--ios-text-primary);
  font-weight: 600;
  border-radius: var(--ios-radius-md);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* 语音播放中脉冲动画 */
@keyframes audio-pulse {
  0% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.06); opacity: 0.75; }
  100% { transform: scale(1); opacity: 1; }
}

.audio-playing {
  animation: audio-pulse 1.2s infinite ease-in-out;
  background-color: #34C759 !important;
  color: #FFFFFF !important;
  border-color: #34C759 !important;
}

/* 闯关答题选项卡动效 */
.quiz-option {
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
}
.quiz-option:hover:not(.disabled) {
  border-color: var(--ios-blue);
  background-color: rgba(0, 122, 255, 0.04);
}
.quiz-option.correct {
  border-color: #34C759 !important;
  background-color: rgba(52, 199, 89, 0.12) !important;
  color: #248A3D !important;
}
.dark .quiz-option.correct {
  color: #34C759 !important;
}
.quiz-option.wrong {
  border-color: #FF3B30 !important;
  background-color: rgba(255, 59, 48, 0.12) !important;
  color: #D70015 !important;
  animation: shake 0.3s ease-in-out;
}
.dark .quiz-option.wrong {
  color: #FF453A !important;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

/* 移动端安全区域适配 */
.pb-safe {
  padding-bottom: calc(env(safe-area-inset-bottom) + 12px);
}

/* 自定义极细滚动条与隐藏滚动条 */
.no-scrollbar::-webkit-scrollbar {
  display: none;
}
.no-scrollbar {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(142, 142, 147, 0.3);
  border-radius: 999px;
}

/* Toast 提示 */
#toast-pill {
  transition: opacity 0.25s cubic-bezier(0.16, 1, 0.3, 1), transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}