/* ============================================
   BIGC CTF Writeups - Cyberpunk Dark Theme
   Inspired by canyouhack.org
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
  --cyb-bg-deep: #0b0e14;
  --cyb-bg-surface: #0f1318;
  --cyb-bg-card: #131820;
  --cyb-bg-elevated: #1a1f2b;
  --cyb-border: rgba(255, 255, 255, 0.08);
  --cyb-border-hover: rgba(0, 212, 170, 0.4);
  --cyb-accent: #00d4aa;
  --cyb-accent-dim: rgba(0, 212, 170, 0.15);
  --cyb-accent-glow: rgba(0, 212, 170, 0.3);
  --cyb-text: #e4e4e7;
  --cyb-text-muted: #8b8fa3;
  --cyb-code-bg: #0d1117;
  --cyb-success: #22c55e;
  --cyb-warning: #eab308;
  --cyb-error: #ef4444;
}

/* ---------- Material Theme Overrides ---------- */
[data-md-color-scheme="slate"] {
  --md-default-bg-color: var(--cyb-bg-deep);
  --md-default-fg-color: var(--cyb-text);
  --md-default-fg-color--light: var(--cyb-text-muted);
  --md-default-fg-color--lighter: rgba(255, 255, 255, 0.3);
  --md-default-fg-color--lightest: var(--cyb-border);
  /* KEY FIX: primary-bg-color is header TEXT color in Material theme */
  --md-primary-fg-color: var(--cyb-bg-deep);
  --md-primary-bg-color: #ffffff;
  --md-accent-fg-color: var(--cyb-accent);
  --md-typeset-a-color: var(--cyb-accent);
  --md-code-bg-color: var(--cyb-code-bg);
  --md-code-fg-color: #c9d1d9;
  --md-footer-bg-color: var(--cyb-bg-surface);
  --md-footer-bg-color--dark: var(--cyb-bg-deep);
}

/* ---------- Body & Background ---------- */
body {
  background: var(--cyb-bg-deep);
}

.md-main {
  background: var(--cyb-bg-deep);
}

/* ============================================
   HEADER - glass-panel style
   ============================================ */
.md-header {
  background: rgba(10, 15, 20, 0.95) !important;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--cyb-border);
  box-shadow: 0 2px 24px rgba(0, 0, 0, 0.5);
  color: #ffffff !important;
  z-index: 12 !important;
}

/* Header text stays white */
.md-header .md-header__title,
.md-header .md-ellipsis {
  color: #ffffff !important;
}

.md-header__title,
.md-header__topic,
.md-header .md-ellipsis {
  font-weight: 700;
  letter-spacing: 0.5px;
}

/* Page subtitle (second topic) in muted color */
.md-header__topic + .md-header__topic,
.md-header__topic + .md-header__topic * {
  color: var(--cyb-text-muted) !important;
  font-weight: 400;
}

/* Search input text stays readable */
.md-header .md-search__input {
  color: var(--cyb-text) !important;
}

.md-header__button {
  color: rgba(255, 255, 255, 0.8) !important;
  transition: color 0.2s;
}

/* 桌面端也显示左上角汉堡菜单按钮 */
.md-header__button[for="__drawer"] {
  display: inline-block !important;
}

/* 桌面端：点击汉堡按钮弹出导航抽屉 */
@media screen and (min-width: 76.25em) {
  /* 抽屉打开时 header 必须在遮罩层之上，否则汉堡按钮无法点击 */
  [data-md-toggle="drawer"]:checked ~ .md-header {
    z-index: 200 !important;
  }

  [data-md-toggle="drawer"]:checked ~ .md-container .md-sidebar--primary {
    display: block !important;
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 16.5rem !important;
    height: 100vh !important;
    z-index: 150 !important;
    background: var(--cyb-bg-surface) !important;
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.6);
    transform: translateX(0) !important;
    opacity: 1 !important;
    overflow-y: auto;
    padding-top: 3.6rem;
  }

  /* 抽屉打开时，强制显示被桌面端隐藏的导航项 */
  [data-md-toggle="drawer"]:checked ~ .md-container .md-sidebar--primary .md-nav__title {
    display: block !important;
    padding: 0.4rem 0.6rem;
    font-size: 0.7rem;
  }

  [data-md-toggle="drawer"]:checked ~ .md-container .md-sidebar--primary .md-nav__item {
    display: block !important;
    border-bottom: 1px solid var(--cyb-border);
  }

  [data-md-toggle="drawer"]:checked ~ .md-container .md-sidebar--primary .md-nav__link {
    display: flex !important;
    padding: 0.5rem 0.8rem !important;
    font-size: 0.82rem;
  }

  /* 避免当前页在抽屉中出现“标签+链接”双份显示（如：首页出现两次） */
  [data-md-toggle="drawer"]:checked ~ .md-container .md-sidebar--primary .md-nav__link[for="__toc"] {
    display: none !important;
  }

  /* 避免分组标题在抽屉中重复显示（如：Web / WEB） */
  [data-md-toggle="drawer"]:checked ~ .md-container .md-sidebar--primary .md-nav__item--nested > .md-nav > .md-nav__title {
    display: none !important;
  }

  /* 子导航默认收起，点击分类名展开 */
  [data-md-toggle="drawer"]:checked ~ .md-container .md-sidebar--primary .md-nav__item--nested > .md-nav {
    display: none;
  }

  [data-md-toggle="drawer"]:checked ~ .md-container .md-sidebar--primary .md-nav__item--nested > .md-toggle:checked ~ .md-nav {
    display: block !important;
    padding-left: 0.6rem;
    border-left: 2px solid var(--cyb-accent-dim);
    margin-left: 0.8rem;
  }

  /* 子导航中的链接样式 */
  [data-md-toggle="drawer"]:checked ~ .md-container .md-sidebar--primary .md-nav__item--nested .md-nav__link {
    font-size: 0.78rem;
    padding: 0.35rem 0.6rem !important;
    color: rgba(255, 255, 255, 0.65) !important;
  }

  [data-md-toggle="drawer"]:checked ~ .md-container .md-sidebar--primary .md-nav__item--nested .md-nav__link:hover {
    color: var(--cyb-accent) !important;
  }

  /* 隐藏抽屉内不需要的元素 */
  [data-md-toggle="drawer"]:checked ~ .md-container .md-sidebar--primary .md-nav--secondary {
    display: none !important;
  }

  /* 遮罩层由 JS 创建（label for="__drawer"），点击可关闭抽屉 */
  .cyb-drawer-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 140;
    background: rgba(0, 0, 0, 0.5);
    cursor: pointer;
  }

  [data-md-toggle="drawer"]:checked ~ .md-container .cyb-drawer-backdrop {
    display: block;
  }
}

.md-header__button:hover {
  color: var(--cyb-accent) !important;
}

.md-header__button.md-logo img,
.md-header__button.md-logo svg {
  filter: brightness(0) invert(1);
}

/* ============================================
   TABS BAR - canyouhack.org pill-button style
   Each tab is a translucent glass pill with
   subtle border, hover glow, and active accent.
   ============================================ */
.md-tabs {
  background: rgba(10, 15, 20, 0.90) !important;
  border-bottom: 1px solid var(--cyb-border);
  padding: 0.35rem 0;
}

.md-tabs__link {
  font-size: 0.8rem !important;
  font-weight: 500 !important;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  color: #ffffff !important;
  opacity: 0.75 !important;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  padding: 0.4rem 0.85rem !important;
  margin: 0 0.15rem;
  transition: all 0.25s ease;
}

.md-tabs__link:hover {
  opacity: 1 !important;
  color: #ffffff !important;
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.18);
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.05);
}

.md-tabs__link--active {
  opacity: 1 !important;
  color: var(--cyb-accent) !important;
  background: var(--cyb-accent-dim) !important;
  border-color: rgba(0, 212, 170, 0.3) !important;
  box-shadow: 0 0 16px var(--cyb-accent-dim),
              inset 0 0 12px rgba(0, 212, 170, 0.08);
}

/* ============================================
   LEFT SIDEBAR / NAVIGATION
   ============================================ */
.md-sidebar {
  background: var(--cyb-bg-deep);
}

.md-sidebar--primary {
  border-right: 1px solid var(--cyb-border);
}

.md-nav__title {
  color: var(--cyb-text-muted) !important;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.md-nav__link {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.7) !important;
  transition: all 0.2s;
  border-radius: 4px;
  padding: 0.3rem 0.6rem !important;
}

.md-nav__link:hover {
  color: #ffffff !important;
  background: rgba(255, 255, 255, 0.06);
}

.md-nav__link--active,
.md-nav__item--active > .md-nav__link {
  color: var(--cyb-accent) !important;
  font-weight: 600;
  background: var(--cyb-accent-dim);
}

.md-nav--primary .md-nav__item--active > .md-nav__link {
  border-left: 2px solid var(--cyb-accent);
  padding-left: calc(0.6rem - 2px) !important;
}

.md-nav__icon {
  color: var(--cyb-text-muted) !important;
}

.md-nav--primary .md-nav__title[for] {
  color: rgba(255, 255, 255, 0.5) !important;
}

/* ============================================
   RIGHT SIDEBAR / TOC
   ============================================ */
.md-sidebar--secondary {
  border-left: 1px solid var(--cyb-border);
}

.md-nav--secondary .md-nav__title {
  color: var(--cyb-text-muted) !important;
  box-shadow: none;
  background: transparent;
}

.md-nav--secondary .md-nav__link {
  color: rgba(255, 255, 255, 0.55) !important;
}

.md-nav--secondary .md-nav__link:hover {
  color: rgba(255, 255, 255, 0.85) !important;
}

.md-nav--secondary .md-nav__link--active {
  color: var(--cyb-accent) !important;
  font-weight: 600;
}

/* ---------- Content Area ---------- */
.md-content {
  background: var(--cyb-bg-deep);
}

.md-typeset h1 {
  font-weight: 800;
  letter-spacing: -0.5px;
  color: #ffffff;
}

.md-typeset h2 {
  font-weight: 700;
  color: #f0f0f2;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--cyb-border);
}

.md-typeset h3 {
  font-weight: 600;
  color: #d4d4d8;
}

.md-typeset .headerlink {
  color: var(--cyb-accent) !important;
  opacity: 0;
  transition: opacity 0.2s;
}

.md-typeset h1:hover .headerlink,
.md-typeset h2:hover .headerlink,
.md-typeset h3:hover .headerlink {
  opacity: 0.6;
}

.md-typeset a {
  color: var(--cyb-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

.md-typeset a:hover {
  border-bottom-color: var(--cyb-accent);
}

/* ---------- Code Blocks ---------- */
.md-typeset code {
  font-size: 0.84em;
  background: var(--cyb-bg-elevated);
  border: 1px solid var(--cyb-border);
  border-radius: 4px;
  padding: 0.1em 0.35em;
  color: var(--cyb-accent);
}

.md-typeset pre {
  border: 1px solid var(--cyb-border);
  border-radius: 8px;
  overflow: hidden;
}

.md-typeset pre code {
  background: var(--cyb-code-bg);
  border: none;
  color: #c9d1d9;
  padding: 0;
  font-size: 0.84em;
}

.md-clipboard {
  color: var(--cyb-text-muted) !important;
  transition: color 0.2s;
}

.md-clipboard:hover {
  color: var(--cyb-accent) !important;
}

/* ---------- Cards (Homepage) ---------- */
.md-typeset .grid.cards > ul > li {
  background: var(--cyb-bg-card);
  border: 1px solid var(--cyb-border);
  border-radius: 12px;
  padding: 1.2rem;
  transition: all 0.3s ease;
}

.md-typeset .grid.cards > ul > li:hover {
  border-color: var(--cyb-border-hover);
  box-shadow: 0 0 20px var(--cyb-accent-dim),
              0 4px 16px rgba(0, 0, 0, 0.3);
  transform: translateY(-2px);
}

.md-typeset .grid.cards > ul > li p:first-child {
  font-weight: 700;
}

.md-typeset .grid.cards > ul > li:hover .twemoji svg,
.md-typeset .grid.cards > ul > li:hover .emojione svg {
  filter: drop-shadow(0 0 6px var(--cyb-accent-glow));
}

/* ---------- Tables ---------- */
.md-typeset table:not([class]) {
  font-size: 0.82rem;
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid var(--cyb-border);
  border-radius: 8px;
  overflow: hidden;
}

.md-typeset table:not([class]) th {
  background: var(--cyb-bg-elevated);
  color: var(--cyb-accent);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--cyb-border);
}

.md-typeset table:not([class]) td {
  border-bottom: 1px solid var(--cyb-border);
}

.md-typeset table:not([class]) tr:last-child td {
  border-bottom: none;
}

.md-typeset table:not([class]) tr:hover td {
  background: var(--cyb-accent-dim);
}

/* ---------- Blockquotes ---------- */
.md-typeset blockquote {
  border-left: 3px solid var(--cyb-accent);
  background: var(--cyb-accent-dim);
  padding: 0.8rem 1rem;
  border-radius: 0 8px 8px 0;
}

/* ---------- Admonitions ---------- */
.md-typeset .admonition,
.md-typeset details {
  background: var(--cyb-bg-card);
  border: 1px solid var(--cyb-border);
  border-radius: 8px;
  box-shadow: none;
}

/* ---------- Tags ---------- */
.md-typeset .md-tag {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  background: var(--cyb-accent-dim);
  color: var(--cyb-accent);
  border: 1px solid rgba(0, 212, 170, 0.25);
  border-radius: 4px;
  padding: 0.15em 0.5em;
}

/* ---------- Search ---------- */
.md-search__form {
  background: var(--cyb-bg-elevated) !important;
  border: 1px solid var(--cyb-border);
  border-radius: 8px;
}

.md-search__form:focus-within {
  border-color: var(--cyb-accent);
  box-shadow: 0 0 12px var(--cyb-accent-dim);
}

.md-search__input {
  font-size: 0.85rem;
  color: var(--cyb-text) !important;
}

.md-search__input::placeholder {
  color: var(--cyb-text-muted) !important;
}

/* ---------- Footer ---------- */
.md-footer {
  background: var(--cyb-bg-surface);
  border-top: 1px solid var(--cyb-border);
}

.md-footer-meta {
  background: var(--cyb-bg-deep);
}

.md-footer__link {
  transition: opacity 0.2s;
  color: rgba(255, 255, 255, 0.8) !important;
}

.md-footer__link:hover {
  color: var(--cyb-accent) !important;
}

.md-footer__title {
  color: rgba(255, 255, 255, 0.9) !important;
}

.md-footer__direction {
  color: var(--cyb-text-muted) !important;
  font-size: 0.7rem;
}

.md-footer__link .md-icon {
  color: rgba(255, 255, 255, 0.6) !important;
}

.md-social__link {
  color: rgba(255, 255, 255, 0.6) !important;
  transition: color 0.2s;
}

.md-social__link:hover {
  color: var(--cyb-accent) !important;
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--cyb-bg-deep);
}

::-webkit-scrollbar-thumb {
  background: var(--cyb-bg-elevated);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--cyb-accent-dim);
}

::selection {
  background: var(--cyb-accent-dim);
  color: #ffffff;
}

.md-progress {
  background: var(--cyb-accent) !important;
}

/* ---------- Back to Top ---------- */
.md-top {
  background: var(--cyb-bg-elevated) !important;
  border: 1px solid var(--cyb-border);
  color: var(--cyb-accent) !important;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.md-top:hover {
  border-color: var(--cyb-accent);
  box-shadow: 0 0 16px var(--cyb-accent-dim);
}

.md-typeset .task-list-indicator::before {
  background-color: var(--cyb-accent);
}

.md-typeset hr {
  border-color: var(--cyb-border);
}

#__comments {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--cyb-border);
}

/* ---------- Homepage Specific ---------- */
.md-typeset h1:first-child {
  background: linear-gradient(135deg, #ffffff 0%, var(--cyb-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- Mobile Responsive ---------- */
@media screen and (max-width: 76.1875em) {
  .md-nav--primary .md-nav__title {
    background: var(--cyb-bg-surface);
    color: #ffffff !important;
  }

  .md-nav--primary .md-nav__title .md-nav__icon {
    color: rgba(255, 255, 255, 0.7) !important;
  }

  [for="__drawer"] {
    color: rgba(255, 255, 255, 0.9) !important;
  }

  .md-nav--primary {
    background: var(--cyb-bg-surface) !important;
  }

  .md-nav--primary .md-nav__item {
    border-bottom: 1px solid var(--cyb-border);
  }
}

@media print {
  :root {
    --cyb-bg-deep: #ffffff;
    --cyb-text: #000000;
    --cyb-accent: #006b55;
  }
}

/* ---------- Breadcrumbs ---------- */
.md-path {
  background: var(--cyb-bg-surface);
  border-bottom: 1px solid var(--cyb-border);
  padding: 0.4rem 0;
}

.md-path__link {
  color: var(--cyb-text-muted) !important;
  font-size: 0.78rem;
  transition: color 0.2s;
}

.md-path__link:hover {
  color: var(--cyb-accent) !important;
}

.md-path__separator {
  color: var(--cyb-text-muted);
}

/* ---------- Script source link ---------- */
.script-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  background: var(--cyb-accent-dim);
  border: 1px solid rgba(0, 212, 170, 0.25);
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--cyb-accent) !important;
  text-decoration: none !important;
  transition: all 0.2s;
  margin-right: 0.5rem;
}

.script-link:hover {
  background: rgba(0, 212, 170, 0.25);
  border-color: var(--cyb-accent);
  box-shadow: 0 0 12px var(--cyb-accent-dim);
  transform: translateY(-1px);
}