/* ==========================================================================
   李灏哲物化生语数英学习大礼包 · Manchester City Edition
   --------------------------------------------------------------------------
   纯展示层：在原有设计令牌（CSS 变量）之上叠加曼城天空蓝 / 深海军蓝的
   磨砂玻璃深色主题，并给页首品牌位加上曼城队徽（天空蓝呼吸光晕 +
   缓速旋转光环，与考搭子、lihaozhe.uk 首页同款）。

   本文件在 css/style.css 之后加载，只重绘视觉层：
   不改变 DOM 结构、不改变任何 JS 逻辑、数据与工具功能。
   打印样式在文件末尾单独钉回黑字白底，保证打印/导出可用。
   ========================================================================== */

:root,
[data-theme="dark"] {
  color-scheme: dark;

  /* 曼城配色 */
  --city-sky: #6cabdd;
  --city-sky-bright: #9dccef;
  --city-sky-deep: #3d86bd;
  --city-navy: #1c2c5b;
  --city-navy-deep: #0a1120;

  /* 主色 */
  --primary: #6cabdd;
  --primary-light: #9dccef;
  --primary-lighter: rgba(108, 171, 221, 0.14);
  --primary-dark: #3d86bd;
  --primary-glow: rgba(108, 171, 221, 0.28);

  /* 辅助色 */
  --secondary: #4ade9b;
  --secondary-light: rgba(74, 222, 155, 0.14);
  --secondary-dark: #6ee7b7;
  --accent: #f7c85c;
  --accent-light: rgba(247, 200, 92, 0.14);
  --danger: #ff9a9a;
  --danger-light: rgba(255, 122, 122, 0.14);
  --danger-dark: #fca5a5;

  /* 学科色：统一压到天空蓝系，靠明度区分 */
  --physics: #9dccef;
  --physics-light: rgba(108, 171, 221, 0.14);
  --physics-glow: rgba(108, 171, 221, 0.22);
  --chemistry: #6cabdd;
  --chemistry-light: rgba(108, 171, 221, 0.14);
  --chemistry-glow: rgba(108, 171, 221, 0.20);
  --biology: #4ade9b;
  --biology-light: rgba(74, 222, 155, 0.14);
  --biology-glow: rgba(74, 222, 155, 0.20);
  --exam: #f7c85c;
  --exam-light: rgba(247, 200, 92, 0.14);
  --platform: #8fb8ff;
  --platform-light: rgba(143, 184, 255, 0.14);
  --chinese: #7fd3ff;
  --chinese-light: rgba(127, 211, 255, 0.14);
  --chinese-glow: rgba(127, 211, 255, 0.20);
  --math: #6cabdd;
  --math-light: rgba(108, 171, 221, 0.14);
  --math-glow: rgba(108, 171, 221, 0.20);

  /* 中性色 */
  --text-primary: #eaf3fd;
  --text-secondary: #c2d6ea;
  --text-tertiary: #8ba6c0;
  --text-inverse: #06101f;
  --bg-primary: #0e1a2c;
  --bg-secondary: #0a1120;
  --bg-tertiary: #142238;
  --bg-elevated: rgba(20, 36, 62, 0.55);
  --border-default: rgba(150, 195, 233, 0.18);
  --border-light: rgba(150, 195, 233, 0.10);
  --border-focus: #6cabdd;

  /* 阴影 */
  --shadow-xs: 0 1px 2px rgba(2, 6, 15, 0.4);
  --shadow-sm: 0 2px 6px rgba(2, 6, 15, 0.45);
  --shadow-md: 0 6px 18px rgba(2, 6, 15, 0.5);
  --shadow-lg: 0 12px 34px rgba(2, 6, 15, 0.55);
  --shadow-xl: 0 20px 46px rgba(2, 6, 15, 0.6);
  --shadow-card: 0 8px 26px rgba(2, 6, 15, 0.45);
  --shadow-elevated: 0 14px 40px rgba(2, 6, 15, 0.55);
  --shadow-glow-primary: 0 0 22px var(--primary-glow);
}

/* ===== 页面底色 ===== */
body {
  background:
    radial-gradient(circle at 12% 8%, rgba(108, 171, 221, 0.16) 0%, transparent 45%),
    radial-gradient(circle at 88% 88%, rgba(61, 134, 189, 0.14) 0%, transparent 50%),
    linear-gradient(160deg, #060b16 0%, #08111f 45%, #050a13 100%);
  background-attachment: fixed;
  color: var(--text-primary);
}

body::before {
  background:
    radial-gradient(ellipse 80% 80% at 20% 20%, rgba(108, 171, 221, 0.10) 0%, transparent 55%),
    radial-gradient(ellipse 80% 80% at 80% 80%, rgba(28, 44, 91, 0.35) 0%, transparent 60%);
}

* {
  scrollbar-color: rgba(150, 195, 233, 0.28) transparent;
}

.container {
  position: relative;
  z-index: 1;
}

/* ===== 页首：磨砂玻璃 + 曼城队徽 ===== */
.main-header {
  background: rgba(17, 30, 52, 0.50);
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
  border: 1px solid rgba(150, 195, 233, 0.18);
  box-shadow: 0 14px 40px rgba(2, 6, 15, 0.55);
}

.main-header::before {
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--city-sky-deep) 18%,
    var(--city-sky) 45%,
    var(--city-sky-bright) 58%,
    var(--city-sky-deep) 82%,
    transparent 100%
  );
}

.main-header h1 {
  background: linear-gradient(120deg, #ffffff 0%, var(--city-sky-bright) 55%, var(--city-sky) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subtitle {
  color: var(--text-secondary);
  letter-spacing: 0.04em;
}

/* 队徽：呼吸光晕 + 缓速光环（与考搭子同源实现） */
.main-header .crest-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 68px;
  height: 68px;
  margin: 0 auto var(--space-3);
}

.main-header .crest-wrap::before {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(140, 206, 240, 0.6),
    rgba(108, 173, 223, 0.22) 46%,
    rgba(108, 173, 223, 0) 72%
  );
  animation: crestPulse 2.8s ease-in-out infinite;
  pointer-events: none;
}

.main-header .crest-wrap::after {
  content: "";
  position: absolute;
  inset: -7px;
  border-radius: 50%;
  background: conic-gradient(
    from 0deg,
    rgba(150, 212, 246, 0) 0deg,
    rgba(170, 222, 252, 0.55) 28deg,
    rgba(150, 212, 246, 0) 80deg,
    rgba(150, 212, 246, 0) 250deg,
    rgba(190, 232, 255, 0.4) 290deg,
    rgba(150, 212, 246, 0) 330deg
  );
  -webkit-mask: radial-gradient(circle, transparent 70%, #000 75%);
  mask: radial-gradient(circle, transparent 70%, #000 75%);
  animation: crestSpin 4.5s linear infinite;
  pointer-events: none;
}

.main-header .crest {
  position: relative;
  z-index: 1;
  display: block;
  width: 62px;
  height: 62px;
  object-fit: contain;
  filter: drop-shadow(0 2px 12px rgba(108, 171, 221, 0.55));
}

@keyframes crestPulse {
  0%, 100% { opacity: 0.42; transform: scale(0.94); }
  50% { opacity: 1; transform: scale(1.09); }
}

@keyframes crestSpin {
  to { transform: rotate(360deg); }
}

/* ===== 导航 / 卡片 / 面板：玻璃层 ===== */
.subject-nav,
.quick-access,
.tools-section,
.tools-access,
.module-tabs,
.tool-header,
footer {
  background: rgba(13, 24, 43, 0.55);
  border: 1px solid rgba(150, 195, 233, 0.18);
  box-shadow: 0 10px 34px rgba(2, 6, 15, 0.5);
  backdrop-filter: blur(14px) saturate(1.15);
  -webkit-backdrop-filter: blur(14px) saturate(1.15);
}

.nav-btn {
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(150, 195, 233, 0.14);
}

.nav-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(150, 195, 233, 0.24);
}

.nav-btn.active {
  color: #ffffff;
  background: linear-gradient(135deg, rgba(108, 171, 221, 0.32), rgba(61, 134, 189, 0.20));
  border-color: rgba(157, 204, 239, 0.45);
  box-shadow: 0 0 24px rgba(108, 171, 221, 0.25);
}

.knowledge-card,
.info-box,
.highlight-box-enhanced,
.tool-card,
.tool-app-body,
.result-card,
.card,
.stat-card,
.reaction-card,
.connection-card,
.all-reactions-panel,
.eco-control-panel,
.eco-chart-section,
.substance-sidebar,
.preset-nav,
.formula-display,
main,
.section,
details {
  background: rgba(17, 30, 52, 0.46);
  border-color: rgba(150, 195, 233, 0.16);
  box-shadow: 0 10px 30px rgba(2, 6, 15, 0.45);
  backdrop-filter: blur(14px) saturate(1.1);
  -webkit-backdrop-filter: blur(14px) saturate(1.1);
}

.tool-access-btn,
.tool-collapse-toggle,
.back-btn,
.tool-header button,
button[data-back],
.view-switch button,
.type-chip,
.clear-filter {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border-color: rgba(150, 195, 233, 0.18);
}

.tool-access-btn:hover,
.view-switch button:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(150, 195, 233, 0.28);
}

.view-switch button.active {
  background: linear-gradient(135deg, rgba(108, 171, 221, 0.3), rgba(61, 134, 189, 0.18));
  color: #ffffff;
  border-color: rgba(157, 204, 239, 0.4);
}

/* 表单控件与表格 */
input,
select,
textarea {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border-color: rgba(150, 195, 233, 0.20);
}

input::placeholder,
textarea::placeholder {
  color: var(--text-tertiary);
}

table th {
  background: rgba(108, 171, 221, 0.12);
  color: var(--text-primary);
  border-color: rgba(150, 195, 233, 0.16);
}

table td {
  border-color: rgba(150, 195, 233, 0.14);
}

/* 主题切换按钮：并入玻璃色系 */
.theme-toggle {
  background: rgba(17, 30, 52, 0.6);
  color: var(--city-sky-bright);
  border-color: rgba(150, 195, 233, 0.28);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* ===== 动效偏好 ===== */
@media (prefers-reduced-motion: reduce) {
  .main-header .crest-wrap::before,
  .main-header .crest-wrap::after {
    animation: none;
  }
}

/* ===== 打印：钉回黑字白底，保证打印/导出不受深色主题影响 ===== */
@media print {
  :root,
  [data-theme="dark"] {
    --bg-primary: #ffffff;
    --bg-secondary: #ffffff;
    --bg-tertiary: #ffffff;
    --bg-elevated: #ffffff;
    --text-primary: #111111;
    --text-secondary: #333333;
    --text-tertiary: #555555;
    --border-default: #cccccc;
    --border-light: #dddddd;
  }

  body {
    background: #ffffff !important;
    color: #111111 !important;
  }

  body::before {
    display: none !important;
  }

  .main-header,
  .crest-wrap,
  .theme-toggle,
  .subject-nav {
    display: none !important;
  }

  .knowledge-card,
  .info-box,
  .highlight-box-enhanced,
  .card {
    background: #ffffff !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
  }
}