/* ============================
   VAILL Faculty Guide to AI Agents
   Black / White / Gold palette
   ============================ */

/* ============================
   Custom palette — CSS variables
   ============================ */
:root,
[data-md-color-scheme="default"] {
  --md-primary-fg-color: #1C1C1C;
  --md-primary-fg-color--light: #2a2a2a;
  --md-primary-fg-color--dark: #111111;
  --md-accent-fg-color: #D4A843;
  --md-accent-fg-color--transparent: rgba(212, 168, 67, 0.1);
  --md-accent-bg-color: #D4A843;
  --md-accent-bg-color--light: rgba(212, 168, 67, 0.1);
}

[data-md-color-scheme="slate"] {
  --md-primary-fg-color: #1C1C1C;
  --md-primary-fg-color--light: #2a2a2a;
  --md-primary-fg-color--dark: #111111;
  --md-accent-fg-color: #D4A843;
  --md-accent-fg-color--transparent: rgba(212, 168, 67, 0.1);
  --md-accent-bg-color: #D4A843;
  --md-accent-bg-color--light: rgba(212, 168, 67, 0.1);
}

/* ============================
   Logo — white on dark header, prominently sized
   ============================ */
.md-header .md-logo {
  padding: 0.3rem 0;
}

.md-header[data-md-state] {
  padding: 0.2rem 0 !important;
}

.md-header .md-logo img,
.md-header__button.md-logo img {
  height: 4.5rem !important;
  max-height: none !important;
  width: auto !important;
  filter: brightness(0) invert(1);
}

/* ============================
   Typography — Fraunces headings
   ============================ */
@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,600;9..144,700&display=swap');

h1, h2 {
  font-family: "Fraunces", serif;
  font-weight: 600;
  letter-spacing: -0.02em;
}

/* Page titles */
.md-content__inner > h1:first-child {
  font-family: "Fraunces", serif;
  font-weight: 700;
  margin-bottom: 0.2rem;
  letter-spacing: -0.03em;
}

/* ============================
   Homepage hero header
   ============================ */
.hero-header,
.md-typeset .hero-header,
.md-typeset .hero-header p,
.md-typeset .hero-header h1 {
  text-align: center !important;
}

.hero-header {
  padding: 2.5rem 0 1rem;
}

.md-typeset .hero-logo {
  display: block;
  width: 280px;
  height: auto;
  margin: 0 auto 1.5rem;
}

.hero-rule {
  width: 60px;
  height: 3px;
  background: var(--md-accent-fg-color);
  margin: 0 auto 1.2rem;
  border-radius: 2px;
}

.md-typeset .hero-title {
  font-family: "Fraunces", serif;
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 0 0 0.6rem;
  line-height: 1.15;
}

.md-typeset p.hero-pitch {
  max-width: 580px;
  margin: 0 auto 1.8rem !important;
  text-align: center !important;
}

.hero-header .hero-buttons {
  justify-content: center;
}

.hero-header .hero-buttons .md-button {
  font-size: 0.8rem;
  padding: 0.5rem 1.2rem;
}

.hero-header .hero-buttons .md-button--primary {
  background: var(--md-accent-fg-color);
  border-color: var(--md-accent-fg-color);
  color: #1C1C1C;
  font-weight: 700;
}

.hero-header .hero-buttons .md-button--primary:hover {
  background: color-mix(in srgb, var(--md-accent-fg-color) 85%, #000);
}

/* ============================
   Links — visually distinct
   ============================ */
.md-typeset a:not(.md-button):not(.md-nav__link):not(.md-source):not(.md-footer__link):not(.headerlink) {
  color: var(--md-accent-fg-color);
  text-decoration-line: underline;
  text-decoration-color: color-mix(in srgb, var(--md-accent-fg-color) 40%, transparent);
}

.md-typeset a:not(.md-button):not(.md-nav__link):not(.md-source):not(.md-footer__link):not(.headerlink):hover {
  text-decoration-color: var(--md-accent-fg-color);
}

/* ============================
   Hero pitch line
   ============================ */
.md-typeset .hero-pitch {
  font-size: 1.15rem !important;
  font-weight: 400;
  color: var(--md-default-fg-color--light);
  line-height: 1.6;
  margin: 0.4rem 0 1.8rem;
  max-width: 680px;
}

/* Hero buttons row */
.hero-buttons {
  display: flex;
  gap: 0.5rem;
  margin: 0 0 1.2rem;
  flex-wrap: wrap;
  align-items: center;
}

.hero-buttons .md-button {
  font-size: 0.75rem;
  padding: 0.35rem 0.8rem;
}


/* ============================
   Badges
   ============================ */
.badge-gold,
.badge-teal {
  display: inline-block;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--md-accent-fg-color);
  border: 1.5px solid var(--md-accent-fg-color);
  border-radius: 3px;
  padding: 1px 6px;
  margin-left: 0.5rem;
  vertical-align: middle;
}

.badge-start {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #fff;
  background: var(--md-accent-fg-color);
  border: 1px solid var(--md-accent-fg-color);
  border-radius: 3px;
  padding: 2px 8px;
  margin-bottom: 0.5rem;
}

.badge-preview {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--md-default-fg-color--light);
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 3px;
  padding: 2px 6px;
  margin-bottom: 0.5rem;
}

/* ============================
   Card grid
   ============================ */
.md-typeset .grid.cards > ul > li {
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 8px;
  padding: 1.2rem 1.4rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  position: relative;
  cursor: pointer;
}

.md-typeset .grid.cards > ul > li > p:last-child > a {
  position: static;
}

.md-typeset .grid.cards > ul > li > p:last-child > a::after {
  content: "";
  position: absolute;
  inset: 0;
}

.md-typeset .grid.cards > ul > li:hover {
  border-color: var(--md-accent-fg-color);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

/* Keyboard nav accessibility */
.md-typeset .grid.cards > ul > li:focus-within {
  border-color: var(--md-accent-fg-color);
  outline: 2px solid var(--md-accent-fg-color);
  outline-offset: 2px;
}

/* ============================
   Bento grid (homepage)
   ============================ */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.7rem;
  margin: 1.5rem 0 2.5rem;
}

.bento-cell {
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 6px;
  padding: 0.45rem 0.65rem !important;
  transition: border-color 0.2s, box-shadow 0.2s;
  position: relative;
  cursor: pointer;
}

.md-typeset .bento-cell p {
  font-size: 0.68rem !important;
  line-height: 1.35 !important;
  margin-bottom: 0.15rem !important;
  margin-top: 0 !important;
}

.bento-cell > p > strong > a::after {
  content: "";
  position: absolute;
  inset: 0;
}

.bento-cell:hover {
  border-color: var(--md-accent-fg-color);
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.07);
}

.bento-cell--featured {
  grid-column: span 3;
  background: color-mix(in srgb, var(--md-accent-fg-color) 5%, var(--md-default-bg-color));
  border-color: color-mix(in srgb, var(--md-accent-fg-color) 25%, transparent);
}

.bento-icon {
  font-size: 0.85rem;
  vertical-align: middle;
  margin-right: 0.15rem;
}

.bento-tag {
  display: inline-block;
  font-size: 0.55rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--md-default-fg-color--light);
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 3px;
  padding: 1px 5px;
  margin-left: 0.4rem;
  vertical-align: middle;
  white-space: nowrap;
}

.bento-tag--nocode {
  color: var(--md-accent-fg-color);
  border-color: color-mix(in srgb, var(--md-accent-fg-color) 50%, transparent);
}

/* ============================
   Content images
   ============================ */
.md-content img {
  max-width: 100%;
  height: auto;
}

.img-narrow {
  max-width: 400px !important;
}

/* ============================
   Admonitions — clean, rounded
   ============================ */
.md-typeset .admonition,
.md-typeset details {
  border-radius: 8px;
  box-shadow: none;
}

/* Try-it / ask-claude admonition */
.md-typeset .admonition.ask-claude,
.md-typeset details.ask-claude,
.md-typeset .admonition.try-it,
.md-typeset details.try-it {
  border-left-color: var(--md-accent-fg-color);
}

/* Narrative blocks */
.narrative-block {
  border-left: 3px solid var(--md-accent-fg-color);
  background: color-mix(in srgb, var(--md-accent-fg-color) 4%, var(--md-default-bg-color));
  border-radius: 0 8px 8px 0;
  padding: 0.7rem 1.1rem;
  margin: 1rem 0 1.2rem;
}

.md-typeset .narrative-teaser {
  font-size: 0.88rem !important;
  font-style: italic;
  color: var(--md-default-fg-color);
  margin-bottom: 0.3rem !important;
  line-height: 1.5;
}

.narrative-block details {
  background: transparent;
  border: none;
  box-shadow: none;
  margin: 0;
  padding: 0;
}

.narrative-block details summary {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--md-accent-fg-color);
  padding: 0.4rem 0;
}

.narrative-block details[open] summary {
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
  margin-bottom: 1rem;
  padding-bottom: 0.6rem;
}

.md-typeset .narrative-block details p {
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--md-default-fg-color--light);
}

/* Field notes */
.md-typeset .admonition.field-note,
.md-typeset details.field-note {
  border-left-color: var(--md-accent-fg-color);
  font-size: 0.88rem;
}

.md-typeset .admonition.lessons,
.md-typeset details.lessons {
  border-left-color: var(--md-accent-fg-color);
}

/* ============================
   TOC — right sidebar
   ============================ */
.md-nav--secondary > .md-nav__title {
  color: var(--md-accent-fg-color);
  font-weight: 600;
}

/* ============================
   Blockquotes
   ============================ */
.md-typeset blockquote {
  padding: 0.4rem 0.8rem;
  margin: 0.6rem 0;
  font-size: 0.88rem;
  line-height: 1.5;
}

.md-typeset blockquote p {
  margin: 0.3rem 0;
}


/* ============================
   Tablet responsive
   ============================ */
@media (max-width: 960px) {
  .bento-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .bento-cell--featured {
    grid-column: span 2;
  }
}

/* ============================
   Mobile responsive
   ============================ */
@media (max-width: 600px) {
  .md-content__inner > h1:first-child {
    font-size: 2rem;
  }

  .hero-header {
    padding: 1.5rem 0 0.5rem;
  }

  .md-typeset .hero-logo {
    width: 200px;
  }

  .md-typeset .hero-title {
    font-size: 1.8rem;
  }

  .hero-pitch {
    font-size: 1.05rem;
  }

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

  .bento-cell--featured {
    grid-column: span 1;
  }

  .bento-cell {
    font-size: 0.85rem;
  }

  .md-typeset .grid.cards > ul > li {
    padding: 1rem 1rem;
  }

  .md-typeset .grid.cards > ul > li + li {
    margin-top: 0.5rem;
  }
}