/* TESAIoT Developer Hub - Custom Dark Theme
   Based on TESAIoT Landing Page Design
   ============================================ */

/* CSS Variables */
:root {
  --bg: #0b1220;
  --bg-nav: rgba(10, 19, 40, 0.85);
  --brand: #14b8a6;
  --brand-hover: #0d9488;
  --brand-light: #5eead4;
  --surface: #0c1533;
  --surface-hover: rgba(255, 255, 255, 0.05);
  --text: #e5e7eb;
  --text-muted: rgba(255, 255, 255, 0.7);
  --text-dim: rgba(255, 255, 255, 0.5);
  --border: rgba(255, 255, 255, 0.1);
  --border-hover: rgba(255, 255, 255, 0.2);
}

/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Navigation */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg-nav);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav {
  width: 100%;
}

.nav__container {
  max-width: 80rem;
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: white;
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: 0.03em;
}

.nav__logo-img {
  width: 48px;
  height: 48px;
  border-radius: 0.5rem;
  background: white;
  padding: 0.25rem;
}

.nav__logo-text {
  white-space: nowrap;
}

.nav__logo-symbol {
  color: #ef4444;
  font-size: 2rem;
  vertical-align: middle;
  position: relative;
  top: 0.1em;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav__link {
  padding: 0.5rem 0.875rem;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 0.5rem;
  transition: all 0.15s ease;
}

.nav__link:hover {
  color: white;
  background: rgba(255, 255, 255, 0.05);
}

.nav__link--active {
  color: var(--brand);
}

.nav__link--github {
  display: flex;
  align-items: center;
  margin-left: 0.5rem;
  padding: 0.5rem;
}

.nav__toggle {
  display: none;
  background: none;
  border: none;
  color: white;
  cursor: pointer;
  padding: 0.5rem;
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .nav__links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 1rem;
    gap: 0.5rem;
  }

  .nav__links--open {
    display: flex;
  }

  .nav__link {
    width: 100%;
    padding: 0.75rem 1rem;
  }

  .nav__link--github {
    margin-left: 0;
    justify-content: center;
  }

  .nav__toggle {
    display: block;
  }
}

/* Main Content */
.main {
  flex: 1;
}

/* Page */
.page {
  max-width: 50rem;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

.page__header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.page__title {
  font-size: 2.25rem;
  font-weight: 700;
  color: white;
  letter-spacing: -0.025em;
  margin-bottom: 0.5rem;
}

.page__excerpt {
  font-size: 1.125rem;
  color: var(--text-muted);
}

/* Content Typography */
.page__content h1,
.page__content h2,
.page__content h3,
.page__content h4,
.page__content h5,
.page__content h6 {
  color: white;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.page__content h1 { font-size: 2rem; }
.page__content h2 { font-size: 1.5rem; margin-top: 3rem; }
.page__content h3 { font-size: 1.25rem; }
.page__content h4 { font-size: 1.125rem; }

.page__content p {
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.page__content a {
  color: var(--brand);
  text-decoration: none;
  transition: color 0.15s ease;
}

.page__content a:hover {
  color: var(--brand-light);
  text-decoration: underline;
}

.page__content strong {
  color: white;
  font-weight: 600;
}

.page__content ul,
.page__content ol {
  margin: 1rem 0;
  padding-left: 1.5rem;
  color: var(--text-muted);
}

.page__content li {
  margin-bottom: 0.5rem;
}

.page__content li::marker {
  color: var(--brand);
}

/* Code Blocks */
.page__content pre {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 1rem;
  overflow-x: auto;
  margin: 1.5rem 0;
}

.page__content code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.875rem;
  line-height: 1.5;
}

.page__content p code,
.page__content li code {
  background: rgba(20, 184, 166, 0.1);
  color: var(--brand);
  padding: 0.125rem 0.375rem;
  border-radius: 0.25rem;
}

/* Tables */
.page__content table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 1.5rem 0;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  overflow: hidden;
}

.page__content th {
  background: rgba(255, 255, 255, 0.05);
  color: white;
  font-weight: 600;
  font-size: 0.875rem;
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.page__content td {
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.page__content tr:last-child td {
  border-bottom: none;
}

.page__content tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* Blockquotes */
.page__content blockquote {
  border-left: 3px solid var(--brand);
  margin: 1.5rem 0;
  padding: 1rem 1.5rem;
  background: rgba(20, 184, 166, 0.05);
  border-radius: 0 0.5rem 0.5rem 0;
  color: var(--text-muted);
}

.page__content blockquote p:last-child {
  margin-bottom: 0;
}

/* Horizontal Rule */
.page__content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

/* Images */
.page__content img {
  max-width: 100%;
  height: auto;
  border-radius: 0.5rem;
  margin: 1.5rem 0;
}

/* Footer */
.footer {
  background: #060b19;
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  margin-top: auto;
}

.footer__container {
  max-width: 80rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.footer__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  text-align: center;
}

@media (min-width: 768px) {
  .footer__content {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer__copyright {
  color: var(--text-dim);
  font-size: 0.875rem;
}

.footer__copyright a {
  color: var(--text-muted);
  text-decoration: none;
}

.footer__copyright a:hover {
  color: var(--brand);
}

.footer__links {
  display: flex;
  gap: 1.5rem;
}

.footer__links a {
  color: var(--text-dim);
  font-size: 0.875rem;
  text-decoration: none;
  transition: color 0.15s ease;
}

.footer__links a:hover {
  color: var(--brand);
}

/* Syntax Highlighting - Rouge */
.highlight .c { color: #6a737d; } /* Comment */
.highlight .err { color: #f97583; } /* Error */
.highlight .k { color: #f97583; } /* Keyword */
.highlight .o { color: #e1e4e8; } /* Operator */
.highlight .cm { color: #6a737d; } /* Comment.Multiline */
.highlight .cp { color: #6a737d; } /* Comment.Preproc */
.highlight .c1 { color: #6a737d; } /* Comment.Single */
.highlight .cs { color: #6a737d; } /* Comment.Special */
.highlight .gd { color: #ffeef0; background-color: #86181d; } /* Generic.Deleted */
.highlight .ge { font-style: italic; } /* Generic.Emph */
.highlight .gi { color: #afffaf; background-color: #22863a; } /* Generic.Inserted */
.highlight .gs { font-weight: bold; } /* Generic.Strong */
.highlight .kc { color: #79b8ff; } /* Keyword.Constant */
.highlight .kd { color: #f97583; } /* Keyword.Declaration */
.highlight .kn { color: #f97583; } /* Keyword.Namespace */
.highlight .kp { color: #f97583; } /* Keyword.Pseudo */
.highlight .kr { color: #f97583; } /* Keyword.Reserved */
.highlight .kt { color: #79b8ff; } /* Keyword.Type */
.highlight .m { color: #79b8ff; } /* Literal.Number */
.highlight .s { color: #9ecbff; } /* Literal.String */
.highlight .na { color: #b392f0; } /* Name.Attribute */
.highlight .nb { color: #e1e4e8; } /* Name.Builtin */
.highlight .nc { color: #b392f0; } /* Name.Class */
.highlight .no { color: #79b8ff; } /* Name.Constant */
.highlight .nd { color: #b392f0; } /* Name.Decorator */
.highlight .ni { color: #e1e4e8; } /* Name.Entity */
.highlight .ne { color: #b392f0; } /* Name.Exception */
.highlight .nf { color: #b392f0; } /* Name.Function */
.highlight .nl { color: #79b8ff; } /* Name.Label */
.highlight .nn { color: #e1e4e8; } /* Name.Namespace */
.highlight .nt { color: #85e89d; } /* Name.Tag */
.highlight .nv { color: #79b8ff; } /* Name.Variable */
.highlight .ow { color: #f97583; } /* Operator.Word */
.highlight .w { color: #e1e4e8; } /* Text.Whitespace */
.highlight .mf { color: #79b8ff; } /* Literal.Number.Float */
.highlight .mh { color: #79b8ff; } /* Literal.Number.Hex */
.highlight .mi { color: #79b8ff; } /* Literal.Number.Integer */
.highlight .mo { color: #79b8ff; } /* Literal.Number.Oct */
.highlight .sb { color: #9ecbff; } /* Literal.String.Backtick */
.highlight .sc { color: #9ecbff; } /* Literal.String.Char */
.highlight .sd { color: #9ecbff; } /* Literal.String.Doc */
.highlight .s2 { color: #9ecbff; } /* Literal.String.Double */
.highlight .se { color: #79b8ff; } /* Literal.String.Escape */
.highlight .sh { color: #9ecbff; } /* Literal.String.Heredoc */
.highlight .si { color: #9ecbff; } /* Literal.String.Interpol */
.highlight .sx { color: #9ecbff; } /* Literal.String.Other */
.highlight .sr { color: #dbedff; } /* Literal.String.Regex */
.highlight .s1 { color: #9ecbff; } /* Literal.String.Single */
.highlight .ss { color: #9ecbff; } /* Literal.String.Symbol */
.highlight .bp { color: #e1e4e8; } /* Name.Builtin.Pseudo */
.highlight .vc { color: #79b8ff; } /* Name.Variable.Class */
.highlight .vg { color: #79b8ff; } /* Name.Variable.Global */
.highlight .vi { color: #79b8ff; } /* Name.Variable.Instance */
.highlight .il { color: #79b8ff; } /* Literal.Number.Integer.Long */

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.25);
}