/* ============================================
   Fz2h Robotics Course - Hermes Agent Style
   Deep dark theme with teal/charcoal aesthetic
   ============================================ */

@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;700&family=JetBrains+Mono:wght@400;600&display=swap");

/* ===== CSS Variables - Dark Theme ===== */
:root {
  /* Display fonts */
  --course-display-font: "Space Grotesk", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --course-body-font: "Roboto", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --course-code-font: "JetBrains Mono", "Roboto Mono", "Consolas", monospace;

  /* Brand colors - Hermes inspired */
  --course-brand-ink: #e5f4ff;
  --course-brand-ink-soft: #bfd6e8;
  --course-brand-cyan: #2dd4bf;
  --course-brand-sky: #38bdf8;
  --course-brand-orange: #fb923c;
  --course-brand-gold: #e2b714;
  --course-brand-line: rgba(148, 163, 184, 0.18);

  /* Surface colors - Deep dark */
  --course-surface: #0a0a1a;
  --course-surface-strong: #12122a;
  --course-surface-card: #1a1a3e;
  --course-surface-hover: #22224a;

  /* Panel styling */
  --course-panel-shadow: 0 28px 64px rgba(2, 6, 23, 0.42);
  --course-panel-radius: 28px;
  --course-panel-radius-md: 22px;

  /* MkDocs Material overrides */
  --md-primary-fg-color: #0f0f23;
  --md-primary-fg-color--light: #1a1a3e;
  --md-primary-fg-color--dark: #0a0a1a;
  --md-accent-fg-color: #2dd4bf;
  --md-typeset-a-color: #2dd4bf;

  /* Hero gradient */
  --hero-gradient-start: #0f0f23;
  --hero-gradient-mid: #1a1a2e;
  --hero-gradient-end: #0a0a1a;
}

/* ===== Light Theme Overrides ===== */
[data-md-color-scheme="default"] {
  /* Brand colors - adjusted for light */
  --course-brand-ink: #1e293b;
  --course-brand-ink-soft: #475569;
  --course-brand-cyan: #0d9488;
  --course-brand-sky: #0284c7;
  --course-brand-orange: #ea580c;
  --course-brand-gold: #ca8a04;
  --course-brand-line: rgba(100, 116, 139, 0.2);

  /* Surface colors - Clean light */
  --course-surface: #f8fafc;
  --course-surface-strong: #ffffff;
  --course-surface-card: #ffffff;
  --course-surface-hover: #f1f5f9;

  /* MkDocs Material overrides */
  --md-primary-fg-color: #0f172a;
  --md-primary-fg-color--light: #1e293b;
  --md-primary-fg-color--dark: #0f172a;
  --md-accent-fg-color: #0d9488;
  --md-typeset-a-color: #0d9488;

  /* Hero gradient */
  --hero-gradient-start: #f8fafc;
  --hero-gradient-mid: #f1f5f9;
  --hero-gradient-end: #e2e8f0;
}

[data-md-color-scheme="default"] body {
  background: var(--course-surface);
  color: var(--course-brand-ink);
}

/* Light: Header */
[data-md-color-scheme="default"] .md-header {
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%) !important;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  border-bottom: 1px solid rgba(100, 116, 139, 0.15);
}

[data-md-color-scheme="default"] .md-header__button.md-logo {
  background: linear-gradient(180deg, rgba(13, 148, 136, 0.1), rgba(13, 148, 136, 0.03));
  box-shadow: inset 0 1px 0 rgba(13, 148, 136, 0.15);
}

[data-md-color-scheme="default"] .md-header__title {
  color: var(--course-brand-ink) !important;
}

/* Light: Header icons - fix white on white */
[data-md-color-scheme="default"] .md-header__button:not(.md-logo) svg,
[data-md-color-scheme="default"] .md-header__button:not(.md-logo) img {
  color: #475569 !important;
  fill: #475569 !important;
}

[data-md-color-scheme="default"] .md-source svg,
[data-md-color-scheme="default"] .md-source img {
  color: #475569 !important;
  fill: #475569 !important;
}

[data-md-color-scheme="default"] .md-header__source .md-source {
  color: var(--course-brand-ink) !important;
}

[data-md-color-scheme="default"] .md-search__icon svg {
  color: #475569 !important;
  fill: #475569 !important;
}

[data-md-color-scheme="default"] .md-search__input::placeholder {
  color: #94a3b8 !important;
}

[data-md-color-scheme="default"] .md-search__input {
  color: var(--course-brand-ink) !important;
  border-color: #e2e8f0 !important;
}

[data-md-color-scheme="default"] .md-ellipsis {
  color: var(--course-brand-ink) !important;
}

[data-md-color-scheme="default"] .md-select svg {
  color: #475569 !important;
  fill: #475569 !important;
}

/* Light: Tabs */
[data-md-color-scheme="default"] .md-tabs {
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%) !important;
  border-bottom: 1px solid rgba(100, 116, 139, 0.15);
}

[data-md-color-scheme="default"] .md-tabs__link {
  color: var(--course-brand-ink-soft) !important;
}

[data-md-color-scheme="default"] .md-tabs__link:hover {
  color: var(--course-brand-cyan) !important;
}

[data-md-color-scheme="default"] .md-tabs__link--active {
  color: var(--course-brand-cyan) !important;
  border-bottom: 2px solid var(--course-brand-cyan);
}

/* Light: Sidebar */
[data-md-color-scheme="default"] .md-sidebar {
  background: #ffffff !important;
  border-right: 1px solid rgba(100, 116, 139, 0.12);
}

[data-md-color-scheme="default"] .md-sidebar__scrollwrap {
  background: #ffffff !important;
}

[data-md-color-scheme="default"] .md-nav__link {
  color: var(--course-brand-ink-soft) !important;
}

[data-md-color-scheme="default"] .md-nav__link:hover {
  color: var(--course-brand-cyan) !important;
  background: rgba(13, 148, 136, 0.06);
}

[data-md-color-scheme="default"] .md-nav__link--active {
  color: var(--course-brand-cyan) !important;
  font-weight: 600;
  background: rgba(13, 148, 136, 0.08);
  border-left: 3px solid var(--course-brand-cyan);
}

/* Light: Main Content */
[data-md-color-scheme="default"] .md-content {
  background: var(--course-surface) !important;
}

[data-md-color-scheme="default"] .md-content__inner {
  background: var(--course-surface-strong);
  border-radius: var(--course-panel-radius);
  margin: 1rem;
  padding: 2rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

/* Light: Text */
[data-md-color-scheme="default"] .md-typeset {
  color: var(--course-brand-ink);
}

[data-md-color-scheme="default"] .md-typeset h1,
[data-md-color-scheme="default"] .md-typeset h2,
[data-md-color-scheme="default"] .md-typeset h3,
[data-md-color-scheme="default"] .md-typeset h4 {
  color: var(--course-brand-ink);
}

/* Light: Links */
[data-md-color-scheme="default"] .md-typeset a {
  color: var(--course-brand-cyan);
}

[data-md-color-scheme="default"] .md-typeset a:hover {
  color: var(--course-brand-sky);
}

/* Light: Code blocks */
[data-md-color-scheme="default"] {
  --md-code-fg-color: #1e293b;
  --md-code-bg-color: #ffffff;
  --md-code-bg-color--light: #f8fafc;
  --md-code-bg-color--lighter: #f1f5f9;
  --md-code-hl-number-color: #d97706;
  --md-code-hl-special-color: #f06090;
  --md-code-hl-function-color: #7c3aed;
  --md-code-hl-constant-color: #0284c7;
  --md-code-hl-keyword-color: #7c3aed;
  --md-code-hl-string-color: #059669;
  --md-code-hl-name-color: #1e293b;
  --md-code-hl-operator-color: #dc2626;
  --md-code-hl-punctuation-color: #475569;
  --md-code-hl-comment-color: #6b7280;
  --md-code-hl-generic-color: #475569;
  --md-code-hl-variable-color: #1e293b;
}

[data-md-color-scheme="default"] .md-typeset code {
  background: #f1f5f9;
  color: #0f172a;
  border: 1px solid #e2e8f0;
}

[data-md-color-scheme="default"] .md-typeset pre {
  background: #ffffff;
  color: #1e293b;
  border: 1px solid #1e293b;
}

[data-md-color-scheme="default"] .md-typeset pre code {
  background: transparent;
  border: none;
  color: #1e293b;
}

/* Light: Tables */
[data-md-color-scheme="default"] .md-typeset table {
  border: 1px solid #e2e8f0;
}

[data-md-color-scheme="default"] .md-typeset table th {
  background: #f1f5f9;
  color: var(--course-brand-ink);
  border-bottom: 2px solid #e2e8f0;
}

[data-md-color-scheme="default"] .md-typeset table td {
  border-bottom: 1px solid #e2e8f0;
}

/* Light: Admonitions */
[data-md-color-scheme="default"] .md-typeset .admonition {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-left: 4px solid var(--course-brand-cyan);
}

[data-md-color-scheme="default"] .md-typeset .admonition-title {
  background: #f1f5f9;
  color: var(--course-brand-ink);
}

/* Light: Footer */
[data-md-color-scheme="default"] .course-footer {
  background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
  border-top: 1px solid rgba(100, 116, 139, 0.15);
}

[data-md-color-scheme="default"] .course-footer__brand h3 {
  color: var(--course-brand-ink);
}

[data-md-color-scheme="default"] .course-footer__section h4 {
  color: var(--course-brand-ink);
}

[data-md-color-scheme="default"] .course-footer__link a {
  color: var(--course-brand-ink-soft);
}

[data-md-color-scheme="default"] .course-footer__link a:hover {
  color: var(--course-brand-cyan);
}

/* Light: Home page cards */
[data-md-color-scheme="default"] .home-hero {
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 50%, #f1f5f9 100%);
}

[data-md-color-scheme="default"] .home-hero h1 {
  color: var(--course-brand-ink);
}

[data-md-color-scheme="default"] .home-hero p {
  color: var(--course-brand-ink-soft);
}

[data-md-color-scheme="default"] .module-card {
  background: var(--course-surface-card);
  border: 1px solid rgba(100, 116, 139, 0.15);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

[data-md-color-scheme="default"] .module-card:hover {
  border-color: rgba(13, 148, 136, 0.3);
  box-shadow: 0 8px 30px rgba(13, 148, 136, 0.12);
}

[data-md-color-scheme="default"] .module-card h3 {
  color: var(--course-brand-ink);
}

[data-md-color-scheme="default"] .module-card p {
  color: var(--course-brand-ink-soft);
}

/* Light: Search */
[data-md-color-scheme="default"] .md-search__form {
  background: #f1f5f9;
}

[data-md-color-scheme="default"] .md-search__input {
  background: #f1f5f9;
  color: var(--course-brand-ink);
}

/* Light: Scrollbar */
[data-md-color-scheme="default"] ::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

[data-md-color-scheme="default"] ::-webkit-scrollbar-track {
  background: #f1f5f9;
}

[data-md-color-scheme="default"] ::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 4px;
}

[data-md-color-scheme="default"] ::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

/* ===== Global Styles ===== */
body {
  font-family: var(--course-body-font);
  background: var(--course-surface);
  color: var(--course-brand-ink);
}

/* ===== Header - Deep Dark ===== */
.md-header {
  background: linear-gradient(135deg, #0f0f23 0%, #1a1a3e 100%) !important;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  border-bottom: 1px solid rgba(45, 212, 191, 0.1);
}

.md-header__inner {
  min-height: 4.25rem;
  padding-inline: 0.7rem;
  gap: 0.7rem;
}

.md-header__button.md-logo {
  margin: 0.2rem 0.5rem 0.2rem 0;
  padding: 0.22rem;
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(45, 212, 191, 0.2), rgba(45, 212, 191, 0.05));
  box-shadow: inset 0 1px 0 rgba(45, 212, 191, 0.2);
}

.md-header__button.md-logo img,
.md-header__button.md-logo svg {
  display: block;
  width: 2rem;
  height: 2rem;
  border-radius: 12px;
  object-fit: cover;
}

.md-header__title {
  font-family: var(--course-display-font);
  font-weight: 700;
  color: var(--course-brand-ink) !important;
}

/* ===== Tabs Navigation ===== */
.md-tabs {
  background: linear-gradient(135deg, #0f0f23 0%, #161638 100%) !important;
  border-bottom: 1px solid rgba(45, 212, 191, 0.15);
}

.md-tabs__link {
  font-family: var(--course-display-font);
  font-weight: 500;
  color: var(--course-brand-ink-soft) !important;
  letter-spacing: 0.05em;
  transition: all 0.3s ease;
}

.md-tabs__link:hover {
  color: var(--course-brand-cyan) !important;
}

.md-tabs__link--active {
  color: var(--course-brand-cyan) !important;
  border-bottom: 2px solid var(--course-brand-cyan);
}

/* ===== Sidebar ===== */
.md-sidebar {
  background: #0f0f23 !important;
  border-right: 1px solid rgba(45, 212, 191, 0.1);
}

.md-sidebar__scrollwrap {
  background: #0f0f23 !important;
}

.md-nav__link {
  color: var(--course-brand-ink-soft) !important;
  transition: all 0.2s ease;
}

.md-nav__link:hover {
  color: var(--course-brand-cyan) !important;
  background: rgba(45, 212, 191, 0.05);
}

.md-nav__link--active {
  color: var(--course-brand-cyan) !important;
  font-weight: 600;
  background: rgba(45, 212, 191, 0.1);
  border-left: 3px solid var(--course-brand-cyan);
}

/* ===== Main Content ===== */
.md-content {
  background: var(--course-surface) !important;
}

.md-content__inner {
  background: var(--course-surface-strong);
  border-radius: var(--course-panel-radius);
  margin: 1rem;
  padding: 2rem;
  box-shadow: var(--course-panel-shadow);
}

/* ===== Typography ===== */
.md-typeset h1,
.md-typeset h2,
.md-typeset h3,
.md-typeset h4,
.md-header__title,
.md-tabs__link,
.course-footer h2,
.course-footer h3 {
  font-family: var(--course-display-font);
  letter-spacing: -0.02em;
  color: var(--course-brand-ink);
}

.md-typeset h1 {
  font-size: 2.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--course-brand-cyan), var(--course-brand-sky));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.md-typeset h2 {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--course-brand-cyan);
  border-bottom: 1px solid rgba(45, 212, 191, 0.2);
  padding-bottom: 0.5rem;
}

.md-typeset h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--course-brand-ink);
}

/* ===== Code Blocks ===== */
code,
kbd,
pre,
.md-typeset code {
  font-family: var(--course-code-font);
}

[data-md-color-scheme="default"] .md-typeset code {
  background: #f1f5f9 !important;
  color: #0f172a !important;
  border-radius: 4px;
  padding: 0.2em 0.4em;
  border: 1px solid #e2e8f0;
}

[data-md-color-scheme="slate"] .md-typeset code {
  background: rgba(45, 212, 191, 0.1) !important;
  color: var(--course-brand-cyan) !important;
  border-radius: 4px;
  padding: 0.2em 0.4em;
}

[data-md-color-scheme="default"] .md-typeset pre {
  background: #ffffff !important;
  color: #1e293b !important;
  border: 1px solid #cbd5e1;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
}

[data-md-color-scheme="slate"] .md-typeset pre {
  background: #0f0f23 !important;
  border: 1px solid rgba(45, 212, 191, 0.2);
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

[data-md-color-scheme="default"] .md-typeset pre code {
  background: transparent !important;
  color: #1e293b !important;
  padding: 1.5rem;
  border: none;
}

[data-md-color-scheme="slate"] .md-typeset pre code {
  background: transparent !important;
  color: var(--course-brand-ink) !important;
  padding: 1.5rem;
  border: none;
}

/* ===== Links ===== */
.md-typeset a {
  color: var(--course-brand-cyan) !important;
  text-decoration: none;
  transition: all 0.2s ease;
}

.md-typeset a:hover {
  color: var(--course-brand-sky) !important;
  text-shadow: 0 0 8px rgba(45, 212, 191, 0.3);
}

/* ===== Buttons ===== */
.md-typeset .md-button {
  background: linear-gradient(135deg, var(--course-brand-cyan), var(--course-brand-sky)) !important;
  color: #0f0f23 !important;
  font-weight: 600;
  border: none !important;
  border-radius: 8px;
  padding: 0.75rem 1.5rem;
  transition: all 0.3s ease;
  box-shadow: 0 4px 16px rgba(45, 212, 191, 0.3);
}

.md-typeset .md-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(45, 212, 191, 0.4);
}

.md-typeset .md-button--secondary {
  background: transparent !important;
  color: var(--course-brand-cyan) !important;
  border: 2px solid var(--course-brand-cyan) !important;
  box-shadow: none;
}

.md-typeset .md-button--secondary:hover {
  background: rgba(45, 212, 191, 0.1) !important;
  box-shadow: 0 4px 16px rgba(45, 212, 191, 0.2);
}

/* ===== Admonitions ===== */
.admonition {
  background: var(--course-surface-card) !important;
  border-color: var(--course-brand-cyan) !important;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.admonition-title {
  background: rgba(45, 212, 191, 0.1) !important;
  color: var(--course-brand-cyan) !important;
  border-radius: 12px 12px 0 0;
}

/* ===== Tables ===== */
.md-typeset table {
  background: var(--course-surface-card);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.md-typeset table th {
  background: rgba(45, 212, 191, 0.15);
  color: var(--course-brand-cyan);
  font-weight: 600;
  border-bottom: 2px solid var(--course-brand-cyan);
}

.md-typeset table td {
  border-bottom: 1px solid rgba(45, 212, 191, 0.1);
  color: var(--course-brand-ink-soft);
}

.md-typeset table tr:hover {
  background: rgba(45, 212, 191, 0.05);
}

/* ===== Footer ===== */
.md-footer {
  background: linear-gradient(135deg, #0f0f23 0%, #1a1a3e 100%) !important;
  border-top: 1px solid rgba(45, 212, 191, 0.15);
}

.md-footer__link {
  color: var(--course-brand-ink-soft) !important;
}

.md-footer__link:hover {
  color: var(--course-brand-cyan) !important;
}

/* ===== Custom Footer ===== */
.course-footer {
  background: linear-gradient(135deg, #0f0f23 0%, #1a1a3e 100%);
  border-top: 1px solid rgba(45, 212, 191, 0.15);
  padding: 3rem 2rem;
  margin-top: 2rem;
}

.course-footer h2,
.course-footer h3 {
  color: var(--course-brand-cyan);
}

.course-footer a {
  color: var(--course-brand-ink-soft);
  transition: color 0.2s ease;
}

.course-footer a:hover {
  color: var(--course-brand-cyan);
}

.course-footer__logo img {
  width: 80px;
  height: 80px;
  border-radius: 16px;
  object-fit: cover;
}

.course-footer__brand {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.course-footer__eyebrow {
  font-family: var(--course-code-font);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--course-brand-cyan);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin: 0 0 0.25rem;
}

.course-footer__inner {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 3rem;
  max-width: 1200px;
  margin: 0 auto;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(45, 212, 191, 0.1);
}

.course-footer__links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.course-footer__links h3 {
  font-size: 0.875rem;
  font-weight: 600;
  margin: 0 0 1rem;
}

.course-footer__links a {
  display: block;
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
}

.course-footer__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 1.5rem;
}

.course-footer__meta p {
  font-size: 0.8125rem;
  color: var(--course-brand-ink-soft);
  margin: 0;
}

.course-footer__record {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.course-footer__record img {
  width: 20px;
  height: 20px;
}

.course-footer__record a {
  font-size: 0.75rem;
  color: var(--course-brand-ink-soft);
}

/* ============================================
   Homepage Styles - Hermes Agent Inspired
   ============================================ */

/* ===== Hero Section ===== */
.home-shell {
  background: linear-gradient(180deg, 
    var(--hero-gradient-start) 0%, 
    var(--hero-gradient-mid) 40%, 
    var(--hero-gradient-end) 100%);
  min-height: 100vh;
  position: relative;
  overflow: hidden;
}

.home-shell::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 30%, rgba(45, 212, 191, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(56, 189, 248, 0.06) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(226, 183, 20, 0.04) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

.home-shell__inner {
  position: relative;
  z-index: 1;
}

/* ===== Hero Grid ===== */
.home-hero {
  padding: 4rem 0 3rem;
}

.home-hero__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.home-hero__copy {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.home-eyebrow {
  font-family: var(--course-code-font);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--course-brand-cyan);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin: 0;
}

.home-hero__copy h1 {
  font-family: var(--course-display-font);
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.1;
  margin: 0;
  background: linear-gradient(135deg, var(--course-brand-gold), var(--course-brand-orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.home-lead {
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--course-brand-ink-soft);
  margin: 0;
  max-width: 500px;
}

/* ===== Hero Actions ===== */
.home-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.home-actions .md-button {
  padding: 0.875rem 2rem;
  font-size: 1rem;
  border-radius: 8px;
}

.home-actions .md-button--primary {
  background: linear-gradient(135deg, var(--course-brand-cyan), var(--course-brand-sky)) !important;
  color: #0f0f23 !important;
  font-weight: 700;
  box-shadow: 0 8px 32px rgba(45, 212, 191, 0.4);
}

.home-actions .md-button--primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(45, 212, 191, 0.5);
}

/* ===== Hero Stats ===== */
.home-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 1rem;
}

.home-stat {
  background: rgba(45, 212, 191, 0.05);
  border: 1px solid rgba(45, 212, 191, 0.15);
  border-radius: 12px;
  padding: 1rem;
  transition: all 0.3s ease;
}

.home-stat:hover {
  background: rgba(45, 212, 191, 0.1);
  border-color: var(--course-brand-cyan);
  transform: translateY(-2px);
}

.home-stat strong {
  display: block;
  font-family: var(--course-display-font);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--course-brand-cyan);
  margin-bottom: 0.25rem;
}

.home-stat span {
  font-size: 0.9375rem;
  color: var(--course-brand-ink-soft);
  line-height: 1.5;
}

/* ===== Hero Visual ===== */
.home-hero__visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.home-visual-card {
  background: linear-gradient(135deg, rgba(45, 212, 191, 0.1), rgba(56, 189, 248, 0.05));
  border: 1px solid rgba(45, 212, 191, 0.2);
  border-radius: var(--course-panel-radius);
  padding: 2rem;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  transition: all 0.3s ease;
}

.home-visual-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.4);
  border-color: var(--course-brand-cyan);
}

.home-visual-card img {
  width: 100%;
  max-width: 400px;
  height: auto;
  display: block;
}

/* ===== Hero Badges ===== */
.home-hero__badge {
  position: absolute;
  background: var(--course-surface-card);
  border: 1px solid rgba(45, 212, 191, 0.3);
  border-radius: 12px;
  padding: 0.75rem 1rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.home-hero__badge span {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--course-brand-cyan);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.25rem;
}

.home-hero__badge strong {
  display: block;
  font-size: 0.875rem;
  color: var(--course-brand-ink);
}

.home-hero__badge--top {
  top: 1rem;
  right: -1rem;
}

.home-hero__badge--bottom {
  bottom: 1rem;
  left: -1rem;
}

/* ===== Info Strip ===== */
.home-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  max-width: 1200px;
  margin: 0 auto 3rem;
  padding: 0 2rem;
}

.home-info-card {
  background: var(--course-surface-card);
  border: 1px solid rgba(45, 212, 191, 0.15);
  border-radius: var(--course-panel-radius-md);
  padding: 1.5rem;
  transition: all 0.3s ease;
}

.home-info-card:hover {
  border-color: var(--course-brand-cyan);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}

.home-info-card h2 {
  font-family: var(--course-display-font);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--course-brand-cyan);
  margin: 0 0 0.75rem;
}

.home-info-card p {
  color: var(--course-brand-ink-soft);
  font-size: 1rem;
  line-height: 1.6;
  margin: 0;
}

/* ===== Module Grid ===== */
.home-panel {
  max-width: 1200px;
  margin: 0 auto 3rem;
  padding: 0 2rem;
}

.home-section-head {
  margin-bottom: 2rem;
}

.home-section-kicker {
  font-family: var(--course-code-font);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--course-brand-cyan);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin: 0 0 0.5rem;
}

.home-section-head h2 {
  font-family: var(--course-display-font);
  font-size: 2rem;
  font-weight: 700;
  color: var(--course-brand-ink);
  margin: 0 0 0.75rem;
}

.home-section-head p {
  color: var(--course-brand-ink-soft);
  font-size: 1.125rem;
  line-height: 1.6;
  margin: 0;
  max-width: 600px;
}

/* ===== Module Cards ===== */
.module-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.module-card {
  background: var(--course-surface-card);
  border: 1px solid rgba(45, 212, 191, 0.15);
  border-radius: var(--course-panel-radius-md);
  padding: 1.5rem;
  text-decoration: none;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.module-card:hover {
  border-color: var(--course-brand-cyan);
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
  background: var(--course-surface-hover);
}

.module-tag {
  font-family: var(--course-code-font);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--course-brand-cyan);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.module-card h3 {
  font-family: var(--course-display-font);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--course-brand-ink);
  margin: 0;
}

.module-card p {
  color: var(--course-brand-ink-soft);
  line-height: 1.6;
  margin: 0;
  font-size: 1rem;
}

/* ===== Path Grid ===== */
.path-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.path-card {
  background: var(--course-surface-card);
  border: 1px solid rgba(45, 212, 191, 0.15);
  border-radius: var(--course-panel-radius-md);
  padding: 1.5rem;
  text-decoration: none;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.path-card:hover {
  border-color: var(--course-brand-cyan);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}

.path-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background: linear-gradient(135deg, var(--course-brand-cyan), var(--course-brand-sky));
  color: #0f0f23;
  font-family: var(--course-display-font);
  font-size: 1.25rem;
  font-weight: 700;
  border-radius: 50%;
  box-shadow: 0 4px 16px rgba(45, 212, 191, 0.3);
}

.path-card h3 {
  font-family: var(--course-display-font);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--course-brand-ink);
  margin: 0;
}

.path-card p {
  color: var(--course-brand-ink-soft);
  line-height: 1.6;
  margin: 0;
  font-size: 1rem;
}

/* ===== Tag Row ===== */
.tag-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: center;
}

.tag-row span {
  font-family: var(--course-code-font);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--course-brand-cyan);
  background: rgba(45, 212, 191, 0.1);
  border: 1px solid rgba(45, 212, 191, 0.2);
  border-radius: 20px;
  padding: 0.375rem 1rem;
  letter-spacing: 0.05em;
}

/* ===== Dual Panel ===== */
.home-dual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  max-width: 1200px;
  margin: 0 auto 3rem;
  padding: 0 2rem;
}

.home-panel--compact {
  padding: 0;
}

/* ===== Highlight Grid ===== */
.highlight-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.highlight-card {
  background: var(--course-surface-card);
  border: 1px solid rgba(45, 212, 191, 0.15);
  border-radius: 12px;
  padding: 1.25rem;
  transition: all 0.3s ease;
}

.highlight-card:hover {
  border-color: var(--course-brand-cyan);
  transform: translateX(4px);
}

.highlight-card h3 {
  font-family: var(--course-display-font);
  font-size: 1rem;
  font-weight: 600;
  color: var(--course-brand-cyan);
  margin: 0 0 0.5rem;
}

.highlight-card p {
  color: var(--course-brand-ink-soft);
  line-height: 1.6;
  margin: 0;
  font-size: 1rem;
}

/* ===== Update Grid ===== */
.update-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.update-card {
  background: var(--course-surface-card);
  border: 1px solid rgba(45, 212, 191, 0.15);
  border-radius: 12px;
  padding: 1.25rem;
  transition: all 0.3s ease;
}

.update-card:hover {
  border-color: var(--course-brand-cyan);
}

.update-card h3 {
  font-family: var(--course-code-font);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--course-brand-cyan);
  margin: 0 0 0.5rem;
}

.update-card p {
  color: var(--course-brand-ink-soft);
  line-height: 1.6;
  margin: 0 0 0.5rem;
  font-size: 1rem;
}

.update-meta {
  font-family: var(--course-code-font);
  font-size: 0.75rem;
  color: var(--course-brand-gold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ===== CTA Panel ===== */
.home-panel--cta {
  background: linear-gradient(135deg, rgba(45, 212, 191, 0.1), rgba(56, 189, 248, 0.05));
  border: 1px solid rgba(45, 212, 191, 0.2);
  border-radius: var(--course-panel-radius);
  padding: 3rem 2rem;
  text-align: center;
}

.home-panel--cta .home-section-head {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.home-panel--cta .home-actions {
  justify-content: center;
  margin-top: 1.5rem;
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
  .module-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .home-hero__grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .home-hero__copy h1 {
    font-size: 2.5rem;
  }

  .home-stats {
    grid-template-columns: 1fr;
  }

  .home-strip {
    grid-template-columns: 1fr;
  }

  .module-grid {
    grid-template-columns: 1fr;
  }

  .path-grid {
    grid-template-columns: 1fr;
  }

  .home-dual {
    grid-template-columns: 1fr;
  }

  .home-hero__badge {
    display: none;
  }
}

/* ===== Mermaid Diagrams ===== */
.mermaid {
  background: var(--course-surface-card) !important;
  border: 1px solid rgba(45, 212, 191, 0.2);
  border-radius: 12px;
  padding: 1.5rem;
  margin: 1.5rem 0;
}

/* ===== Search ===== */
.md-search__input {
  background: rgba(45, 212, 191, 0.05) !important;
  color: var(--course-brand-ink) !important;
  border-color: rgba(45, 212, 191, 0.2) !important;
}

.md-search__input:focus {
  border-color: var(--course-brand-cyan) !important;
  box-shadow: 0 0 0 2px rgba(45, 212, 191, 0.2);
}

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

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

::-webkit-scrollbar-thumb {
  background: rgba(45, 212, 191, 0.3);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(45, 212, 191, 0.5);
}

/* ===== Selection ===== */
::selection {
  background: rgba(45, 212, 191, 0.3);
  color: var(--course-brand-ink);
}

/* ===== Animations ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.home-hero__copy > * {
  animation: fadeInUp 0.6s ease-out forwards;
}

.home-hero__copy > *:nth-child(1) { animation-delay: 0.1s; }
.home-hero__copy > *:nth-child(2) { animation-delay: 0.2s; }
.home-hero__copy > *:nth-child(3) { animation-delay: 0.3s; }
.home-hero__copy > *:nth-child(4) { animation-delay: 0.4s; }

.module-card {
  animation: fadeInUp 0.6s ease-out forwards;
  opacity: 0;
}

.module-card:nth-child(1) { animation-delay: 0.1s; }
.module-card:nth-child(2) { animation-delay: 0.15s; }
.module-card:nth-child(3) { animation-delay: 0.2s; }
.module-card:nth-child(4) { animation-delay: 0.25s; }
.module-card:nth-child(5) { animation-delay: 0.3s; }
.module-card:nth-child(6) { animation-delay: 0.35s; }
.module-card:nth-child(7) { animation-delay: 0.4s; }
.module-card:nth-child(8) { animation-delay: 0.45s; }