/* StudyMate 文档中心 - Behance 风格设计 */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;600;700&display=swap');

/* ========== 隐藏顶部搜索框、主题切换按钮（强制跟随系统深色/浅色模式） ========== */
.md-header__option label[for="__search"],
.md-search,
.md-header__option[data-md-component="palette"] {
  display: none !important;
}

/* ========== 标题栏 - 与 app_theme.dart 一致（Warm Coral 轻量点缀） ========== */
.md-header {
  background:
    linear-gradient(90deg, rgba(255, 107, 107, 0.03) 1px, transparent 1px),
    linear-gradient(rgba(255, 107, 107, 0.03) 1px, transparent 1px),
    linear-gradient(135deg, #3D3D3D 0%, #2E2E2E 50%, #454545 100%);
  background-size: 24px 24px, 24px 24px, 100% 100%;
  box-shadow: 0 1px 0 rgba(255, 107, 107, 0.1);
}

/* ========== 修复：页面全宽充满，消除左右偏置 ========== */
html {
  overflow-x: hidden;
}

/* 全站 grid 全宽，左右对称 padding，避免内容偏右、左边留白过大 */
.md-header__inner.md-grid,
.md-tabs .md-grid,
.md-main__inner.md-grid {
  max-width: 100%;
  margin-left: 0;
  margin-right: 0;
  padding-left: 2rem;
  padding-right: 2rem;
}

/* ========== 首页宽屏布局 ========== */
/* 首页隐藏标签栏，让 Hero 紧贴 header，去掉上方空白 */
.md-container:has(.docs-hero) .md-tabs {
  display: none;
}

/* 首页去掉 md-main / md-content 顶部多余间距，Hero 紧贴 header */
.md-container:has(.docs-hero) .md-main {
  margin-top: 0;
  padding-top: 0;
}
.md-main__inner:has(.docs-hero) .md-content {
  margin-top: 0;
  padding-top: 0;
}
.md-content__inner:has(.docs-hero) {
  padding-top: 0;
}

/* 首页隐藏左右侧边栏，让 Hero 与内容全宽充满 */
.md-main__inner:has(.docs-hero) .md-sidebar--primary,
.md-main__inner:has(.docs-hero) .md-sidebar--secondary {
  display: none;
}

.md-main__inner:has(.docs-hero) .md-content {
  margin-left: 0;
  margin-right: 0;
}

.md-content__inner:has(.docs-hero) {
  max-width: 100%;
  padding-left: 0;
  padding-right: 0;
  background: transparent;
}

.md-content__inner:has(.docs-hero) .docs-page-width {
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 2rem;
  padding-right: 2rem;
}

@media (max-width: 768px) {
  .md-content__inner:has(.docs-hero) .docs-page-width {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }
}

/* ========== Hero - 浅色明亮风格 ========== */
.docs-hero {
  width: 100vw;
  min-height: 360px;
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
  margin-top: -2rem;
  margin-bottom: 0;
  padding: 4.5rem 2rem 4rem;
  text-align: center;
  color: #1A1A1A;
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'SF Pro Display', sans-serif;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 50% at 50% 0%, rgba(255, 107, 107, 0.08) 0%, transparent 55%),
    radial-gradient(ellipse 50% 35% at 15% 100%, rgba(255, 140, 100, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse 45% 30% at 85% 90%, rgba(255, 107, 107, 0.05) 0%, transparent 50%),
    linear-gradient(175deg, #FFF8F6 0%, #F5EDEA 40%, #F0E8E5 100%);
}

.docs-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image: radial-gradient(circle, rgba(0,0,0,0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.docs-hero::after {
  display: none;
}

/* Hero 背景装饰 - 数学/物理符号 */
.docs-hero__symbols {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.docs-hero__symbols span {
  position: absolute;
  font-size: clamp(12rem, 33vw, 24rem);
  font-weight: 400;
  color: rgba(180, 100, 100, 0.28);
  font-family: 'Times New Roman', 'Noto Serif SC', Georgia, serif;
  user-select: none;
}

.docs-hero__symbols span:nth-child(1) { top: 5%; left: 8%; font-size: 1.2em; }
.docs-hero__symbols span:nth-child(2) { top: 12%; right: 10%; font-size: 1em; }
.docs-hero__symbols span:nth-child(3) { top: 35%; left: 5%; font-size: 1.3em; }
.docs-hero__symbols span:nth-child(4) { top: 8%; left: 55%; font-size: 1.1em; }
.docs-hero__symbols span:nth-child(5) { top: 55%; left: 8%; font-size: 1em; }
.docs-hero__symbols span:nth-child(6) { top: 25%; right: 8%; font-size: 1.15em; }
.docs-hero__symbols span:nth-child(7) { top: 60%; right: 12%; font-size: 1.1em; }
.docs-hero__symbols span:nth-child(8) { top: 15%; left: 75%; font-size: 1.2em; }

.docs-hero__badge {
  display: inline-block;
  position: relative;
  z-index: 1;
  padding: 0.4rem 1rem;
  margin-bottom: 1.25rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #B85A5A;
  background: rgba(255, 107, 107, 0.12);
  border: 1px solid rgba(255, 107, 107, 0.3);
  border-radius: 100px;
}

.docs-hero h1,
.docs-hero .docs-hero__tagline,
.docs-hero .docs-hero__subcopy,
.docs-hero .docs-hero__cta {
  position: relative;
  z-index: 1;
}

.docs-hero__logo {
  display: block;
  position: relative;
  z-index: 1;
  width: 64px;
  height: 64px;
  margin: 0 auto 1rem;
  border-radius: 24px;
  box-shadow: 0 22px 48px rgba(255, 107, 107, 0.18);
}

.docs-hero h1 {
  color: #1A1A1A !important;
  font-size: clamp(2.8rem, 6vw, 4.4rem) !important;
  font-weight: 700 !important;
  letter-spacing: -0.045em !important;
  margin: 0 0 1.5rem 0 !important;
  padding: 0 !important;
  border: none !important;
  line-height: 1.05;
}

.docs-hero__tagline {
  font-size: clamp(1rem, 2vw, 1.3rem) !important;
  font-weight: 400 !important;
  opacity: 0.92 !important;
  max-width: 28em !important;
  margin: 0 auto 2.5rem !important;
  line-height: 1.65 !important;
  letter-spacing: 0.02em;
  color: rgba(26, 26, 26, 0.75);
}

.docs-hero__subcopy {
  max-width: 44rem;
  margin: 0 auto 2rem !important;
  color: rgba(26, 26, 26, 0.68);
  line-height: 1.8 !important;
  font-size: 1rem;
}

[data-md-color-scheme="default"] .docs-hero {
  background:
    radial-gradient(ellipse 80% 50% at 50% 0%, rgba(255, 107, 107, 0.08) 0%, transparent 55%),
    radial-gradient(ellipse 50% 35% at 15% 100%, rgba(255, 140, 100, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse 45% 30% at 85% 90%, rgba(255, 107, 107, 0.05) 0%, transparent 50%),
    linear-gradient(175deg, #FFF8F6 0%, #F5EDEA 40%, #F0E8E5 100%);
}

/* Hero CTA - 玻璃拟态风格 */
.docs-hero__cta {
  display: inline-flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  justify-content: center;
}

@media (max-width: 768px) {
  .docs-hero {
    min-height: auto;
    padding: 3.75rem 1.25rem 3.5rem;
  }

  .docs-hero__logo {
    width: 56px;
    height: 56px;
    margin-bottom: 0.9rem;
  }
}

.docs-hero__cta a {
  display: inline-block;
  padding: 1rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 12px;
  text-decoration: none;
  transition: all 0.25s ease;
  letter-spacing: 0.02em;
}

.docs-hero__cta .docs-cta-primary {
  background: #FF6B6B;
  color: #fff;
  border: none;
  box-shadow: 0 4px 14px rgba(255, 107, 107, 0.25);
}

.docs-hero__cta .docs-cta-primary:hover {
  background: #FF8585;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 107, 107, 0.3);
}

.docs-hero__cta .docs-cta-secondary {
  background: transparent;
  color: #1A1A1A;
  border: 1px solid rgba(26, 26, 26, 0.35);
}

.docs-hero__cta .docs-cta-secondary:hover {
  background: rgba(26, 26, 26, 0.06);
  border-color: rgba(26, 26, 26, 0.5);
  transform: translateY(-2px);
}

/* ========== Section 标题 - Behance "Why upgrade to Pro?" 风格 ========== */
.docs-section {
  padding: 2.5rem 0;
}

.docs-section--alt {
  background: transparent;
  position: relative;
}

.docs-section--alt::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 107, 107, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 107, 107, 0.015) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.docs-section__title {
  font-family: 'Noto Sans SC', sans-serif;
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 0.75rem;
  color: var(--md-default-fg-color);
  letter-spacing: -0.02em;
}

.docs-section__subtitle {
  font-size: 1.1rem;
  text-align: center;
  margin-bottom: 1.5rem;
  color: var(--md-default-fg-color--light);
  max-width: 36em;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

/* ========== 价值卡片 - Behance 三栏 Learn More 风格 ========== */
.docs-value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin: 0;
}

@media (max-width: 960px) {
  .docs-value-grid {
    grid-template-columns: 1fr;
  }
}

.docs-value-card {
  padding: 2.25rem 2rem;
  border-radius: 1rem;
  background: transparent;
  border: 1px solid rgba(255, 107, 107, 0.18);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

[data-md-color-scheme="slate"] .docs-value-card {
  border-color: rgba(255, 107, 107, 0.22);
}

.docs-value-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 48px -12px rgba(0, 0, 0, 0.15);
}

.docs-value-card__icon {
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 1.25rem;
  border-radius: 0.75rem;
  background: linear-gradient(135deg, rgba(255, 107, 107, 0.1) 0%, rgba(255, 107, 107, 0.05) 100%);
}

.docs-value-card__title {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
  color: var(--md-default-fg-color);
}

.docs-value-card__desc {
  font-size: 0.95rem;
  color: var(--md-default-fg-color--light);
  line-height: 1.65;
  margin-bottom: 1rem;
}

.docs-value-card__link {
  font-size: 0.9rem;
  font-weight: 600;
  color: #E88A8A;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: gap 0.2s ease;
}

.docs-value-card__link:hover {
  gap: 0.5rem;
}

/* ========== 数据亮点 - Behance "45%" "4x" 风格 ========== */
.docs-stat-banner {
  text-align: center;
  padding: 2rem 1.5rem;
  margin: 1.5rem 0;
  background: linear-gradient(135deg, #F0A0A0 0%, #F8B0B0 100%);
  border-radius: 1rem;
  color: #5C3A3A;
}

.docs-stat-banner__number {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 0.5rem;
}

.docs-stat-banner__text {
  font-size: 1rem;
  opacity: 0.95;
  line-height: 1.5;
}

/* ========== 法律文档 - Behance CTA 卡片风格 ========== */
.docs-legal-section {
  padding: 2.5rem 0;
}

.docs-legal-title {
  font-size: clamp(1.5rem, 2.5vw, 1.85rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 0.75rem;
  color: var(--md-default-fg-color);
}

.docs-legal-subtitle {
  font-size: 1.05rem;
  text-align: center;
  margin-bottom: 1.5rem;
  color: var(--md-default-fg-color--light);
}

.docs-legal-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  max-width: 960px;
  margin: 0 auto;
}

@media (max-width: 640px) {
  .docs-legal-grid {
    grid-template-columns: 1fr;
  }
}

.docs-legal-card {
  display: flex;
  flex-direction: column;
  padding: 2rem 2.25rem;
  border-radius: 1rem;
  background: transparent;
  border: 1px solid rgba(255, 107, 107, 0.2);
  text-decoration: none;
  color: inherit;
  transition: all 0.25s ease;
}

.docs-legal-card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 107, 107, 0.4);
  box-shadow: 0 16px 40px -12px rgba(255, 107, 107, 0.15);
}

.docs-legal-card__title {
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--md-primary-fg-color, #E88A8A);
  margin-bottom: 0.5rem;
}

.docs-legal-card__desc {
  font-size: 0.9rem;
  color: var(--md-default-fg-color--light);
  line-height: 1.6;
  flex: 1;
}

.docs-legal-card__arrow {
  margin-top: 1rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: #E88A8A;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.docs-audience-grid,
.docs-link-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.docs-audience-card,
.docs-link-card {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: 2rem;
  border-radius: 1.15rem;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(255, 107, 107, 0.16);
  box-shadow: 0 18px 40px -22px rgba(69, 45, 45, 0.2);
}

.docs-link-card {
  text-decoration: none;
  color: inherit;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.docs-link-card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 107, 107, 0.32);
  box-shadow: 0 26px 50px -24px rgba(255, 107, 107, 0.28);
}

.docs-link-card--static:hover {
  transform: none;
  box-shadow: 0 18px 40px -22px rgba(69, 45, 45, 0.2);
}

.docs-audience-card__eyebrow,
.docs-subhero__eyebrow {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  background: rgba(255, 107, 107, 0.12);
  border: 1px solid rgba(255, 107, 107, 0.22);
  color: #b85a5a;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.docs-audience-card h3,
.docs-link-card__title,
.docs-feature-step__body h3,
.docs-subsection h2 {
  margin: 0;
  color: #2f2020;
}

.docs-audience-card p,
.docs-link-card__desc,
.docs-feature-step__body p,
.docs-subsection p,
.docs-subsection li {
  color: rgba(37, 27, 27, 0.78);
  line-height: 1.75;
}

.docs-link-card__arrow {
  margin-top: auto;
  font-weight: 700;
  color: #c25c55;
}

.docs-feature-timeline {
  display: grid;
  gap: 1rem;
}

.docs-feature-step {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 1.25rem;
  padding: 1.35rem 1.4rem;
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.56);
  border: 1px solid rgba(255, 107, 107, 0.14);
}

.docs-feature-step__index {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  font-size: 1.55rem;
  font-weight: 800;
  letter-spacing: -0.05em;
  color: #ff6b6b;
}

.docs-subpage {
  max-width: 1100px;
  margin: 0 auto;
  padding-bottom: 4rem;
}

.docs-subhero {
  padding: 2.5rem 0 2rem;
}

.docs-subhero h1 {
  margin: 0.75rem 0 1rem;
  font-size: clamp(2.2rem, 6vw, 4rem);
  line-height: 1.06;
  letter-spacing: -0.04em;
}

.docs-subhero p {
  max-width: 46rem;
  color: rgba(26, 26, 26, 0.74);
  font-size: 1.05rem;
  line-height: 1.8;
}

.docs-subsection {
  padding: 1.5rem 0 2rem;
}

.docs-subsection ul {
  padding-left: 1.2rem;
}

@media (max-width: 900px) {
  .docs-audience-grid,
  .docs-link-grid {
    grid-template-columns: 1fr;
  }

  .docs-feature-step {
    grid-template-columns: 1fr;
  }

  .docs-feature-step__index {
    justify-content: flex-start;
  }
}

/* ========== 去掉底部背景色框（MkDocs 默认 footer） ========== */
.md-footer {
  display: none;
}

/* ========== 底部提示 ========== */
.docs-legal-footer {
  text-align: center;
  padding: 2rem 1.5rem;
  font-size: 0.9rem;
  color: var(--md-default-fg-color--light);
}

.docs-legal-footer blockquote {
  margin: 0;
  padding: 1.25rem 1.75rem;
  border-left: 4px solid #E88A8A;
  background: transparent;
  border-radius: 0 0.5rem 0.5rem 0;
  max-width: 42em;
  margin: 0 auto;
}