/* 
  ====== RflySim 极简商务大厂风 (Minimalist Tech) ======
*/

:root {
  /* 定义主色调 (深邃的企业蓝/雅黑) - 用于活跃链接等 */
  --md-primary-fg-color: #0f172a;
  --md-primary-fg-color--light: #334155;
  --md-primary-fg-color--dark: #020617;
  --md-primary-bg-color: #ffffff;
  /* 背景文字颜色反转对齐 */

  /* 辅助/强调色 (明亮的蔚蓝 Sky/Blue) */
  --md-accent-fg-color: #0284c7;
  /* Light Blue 600 */
  --md-accent-fg-color--transparent: rgba(2, 132, 199, 0.1);
  --md-accent-bg-color: #ffffff;

  /* 圆角和柔和阴影统一定制 (Stripe/Vercel style) */
  --md-border-radius: 8px;
  --md-shadow-z1: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --md-shadow-z2: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --md-shadow-z3: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* 深色模式下的变量调整 */
[data-md-color-scheme="slate"] {
  --md-primary-fg-color: #f8fafc;
  --md-primary-fg-color--light: #cbd5e1;
  --md-primary-bg-color: #0f172a;
  --md-accent-fg-color: #38bdf8;
  /* Light Blue 400 */
  --md-accent-fg-color--transparent: rgba(56, 189, 248, 0.15);

  --md-shadow-z1: 0 1px 3px 0 rgba(0, 0, 0, 0.4);
  --md-shadow-z2: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
}

/* 字体调整 - 保持干净利落 */
body,
input,
textarea {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  letter-spacing: 0.01em;
  color: #334155;
}

[data-md-color-scheme="slate"] body {
  color: #cbd5e1;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #0f172a;
}

[data-md-color-scheme="slate"] h1,
[data-md-color-scheme="slate"] h2,
[data-md-color-scheme="slate"] h3 {
  color: #f8fafc;
}

/* 修正原生顶部导航（定制为极简白结构） */
.md-header {
  background-color: #ffffff;
  color: #0f172a;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  border-bottom: 1px solid #e2e8f0;
}

[data-md-color-scheme="slate"] .md-header {
  background-color: #0f172a;
  color: #f8fafc;
  border-bottom: 1px solid #334155;
}

.md-header[data-md-state=hidden] {
  transform: translateY(-100%);
}

.md-search__input {
  background-color: #f1f5f9;
  color: #0f172a;
}

[data-md-color-scheme="slate"] .md-search__input {
  background-color: #1e293b;
  color: #f8fafc;
}

/* ========================================================= */
/* Hero 主视觉区域 (极简留白风格)                               */
/* ========================================================= */
.hero-section {
  text-align: center;
  padding: 5rem 1rem 3.5rem;
  margin-bottom: 3rem;
  background-color: #f8fafc;
  /* 非常淡的灰蓝背景 */
  border-radius: var(--md-border-radius);
  border: 1px solid #e2e8f0;
}

[data-md-color-scheme="slate"] .hero-section {
  background-color: #1e293b;
  border-color: #334155;
}

.hero-title {
  font-size: 2.75rem;
  line-height: 1.25;
  font-weight: 800;
  margin-bottom: 1.25rem;
  color: #0f172a;
  letter-spacing: -0.03em;
}

/* 强调文字，采用清爽的主题蓝 */
.text-gradient {
  color: var(--md-accent-fg-color);
}

.hero-subtitle {
  font-size: 1.15rem;
  line-height: 1.7;
  max-width: 760px;
  margin: 0 auto 2.5rem;
  color: #475569;
  font-weight: 400;
}

[data-md-color-scheme="slate"] .hero-subtitle {
  color: #94a3b8;
}

/* ========================================================= */
/* 按钮设计 (GitHub / Vercel 风格)                           */
/* ========================================================= */
.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-buttons .md-button {
  border-radius: 6px;
  /* 较小的圆角显得专业 */
  padding: 0.6rem 1.75rem;
  font-weight: 500;
  transition: all 0.2s ease;
  border: 1px solid #cbd5e1;
  background-color: #ffffff;
  color: #0f172a;
}

[data-md-color-scheme="slate"] .hero-buttons .md-button {
  background-color: #0f172a;
  border-color: #334155;
  color: #e2e8f0;
}

.hero-buttons .md-button--primary {
  background-color: var(--md-accent-fg-color);
  border-color: var(--md-accent-fg-color);
  color: white;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

[data-md-color-scheme="slate"] .hero-buttons .md-button--primary {
  color: #0f172a;
}

.hero-buttons .md-button--primary:hover {
  background-color: #0369a1;
  /* Darker blue */
  border-color: #0369a1;
  color: white;
}

.hero-buttons .md-button:not(.md-button--primary):hover {
  background-color: #f1f5f9;
  border-color: #94a3b8;
}

[data-md-color-scheme="slate"] .hero-buttons .md-button:not(.md-button--primary):hover {
  background-color: #1e293b;
  border-color: #475569;
}

/* ========================================================= */
/* Cards & Grids 美化 (轻量边框风格)                         */
/* ========================================================= */
.md-typeset .grid.cards>ul>li,
.md-typeset .grid.cards>ol>li {
  border-radius: var(--md-border-radius);
  border: 1px solid #e2e8f0;
  transition: all 0.2s ease;
  background: #ffffff;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.02);
  padding: 1.5rem;
}

[data-md-color-scheme="slate"] .md-typeset .grid.cards>ul>li {
  background: #0f172a;
  border-color: #334155;
}

.md-typeset .grid.cards>ul>li:hover,
.md-typeset .grid.cards>ol>li:hover {
  border-color: var(--md-accent-fg-color);
  box-shadow: var(--md-shadow-z2);
  transform: translateY(-2px);
}

.md-typeset .grid.cards>ul>li>hr,
.md-typeset .grid.cards>ol>li>hr {
  margin: 1rem 0;
  border-bottom: 1px solid #e2e8f0;
}

[data-md-color-scheme="slate"] .md-typeset .grid.cards>ul>li>hr {
  border-bottom-color: #334155;
}

/* ========================================================= */
/* 表格与细节美化                                            */
/* ========================================================= */
.md-typeset table:not([class]) {
  border-radius: var(--md-border-radius);
  overflow: hidden;
  border: 1px solid #e2e8f0;
  box-shadow: none;
}

[data-md-color-scheme="slate"] .md-typeset table:not([class]) {
  border-color: #334155;
}

.md-typeset table:not([class]) th {
  background-color: #f8fafc;
  color: #0f172a;
  font-weight: 600;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid #e2e8f0;
}

[data-md-color-scheme="slate"] .md-typeset table:not([class]) th {
  background-color: #1e293b;
  color: #e2e8f0;
  border-bottom-color: #334155;
}

.md-typeset table:not([class]) td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid #e2e8f0;
}

[data-md-color-scheme="slate"] .md-typeset table:not([class]) td {
  border-bottom-color: #334155;
}

/* 侧边栏和层级视觉优化 */
.md-sidebar--primary .md-nav__title {
  font-weight: 600;
  color: #0f172a;
}

[data-md-color-scheme="slate"] .md-sidebar--primary .md-nav__title {
  color: #f8fafc;
}

.md-nav__link--active {
  font-weight: 600;
  color: var(--md-accent-fg-color);
}

/* ========================================================= */
/* 侧边栏高度修复：防止导航菜单被主内容区域高度截断          */
/* ========================================================= */
.md-sidebar--primary {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.md-sidebar__scrollwrap {
  overflow-y: auto;
  max-height: calc(100vh - 4rem);
}

/* 确保主内容区域有足够的最小高度，防止页面内容太短 */
.md-content {
  min-height: 100vh;
}

/* 针对文章正文区域的超链接添加下划线 */
.md-typeset a {
  text-decoration: underline;
  /* 强制显示下划线 */
  text-underline-offset: 3px;
  /* 选填：让下划线往下偏移一点，不至于和文字贴得太紧，阅读体验更好 */
  text-decoration-thickness: 1px;
  /* 选填：控制下划线的粗细 */
}

/* ========================================================= */
/* 语言切换按钮 (Pill Toggle Style)                           */
/* ========================================================= */
.header-lang-toggle {
  border: 1.5px solid var(--md-accent-fg-color) !important;
  border-radius: 999px !important;
  padding: 0.25rem 0.85rem !important;
  font-size: 0.75rem !important;
  font-weight: 600 !important;
  color: var(--md-accent-fg-color) !important;
  background: transparent !important;
  transition: all 0.25s ease !important;
  text-decoration: none !important;
  gap: 0.35rem !important;
  margin-left: 0.4rem !important;
  white-space: nowrap !important;
}

.header-lang-toggle:hover {
  background: var(--md-accent-fg-color) !important;
  color: #ffffff !important;
  box-shadow: 0 2px 8px rgba(2, 132, 199, 0.35) !important;
  transform: translateY(-1px);
}

.header-lang-toggle .md-icon {
  color: inherit !important;
}

[data-md-color-scheme="slate"] .header-lang-toggle {
  border-color: #38bdf8 !important;
  color: #38bdf8 !important;
}

[data-md-color-scheme="slate"] .header-lang-toggle:hover {
  background: #38bdf8 !important;
  color: #0f172a !important;
  box-shadow: 0 2px 8px rgba(56, 189, 248, 0.35) !important;
}