/* ============================================================
   SeinARTS Framework — Documentation Theme

   Professional dark-first palette inspired by RTS command interfaces.
   Colors evoke the tactical clarity of Company of Heroes briefing screens.
   ============================================================ */

/* --- Color Tokens --- */
:root {
  /* Brand palette */
  --sein-gold: #0095ff;
  --sein-gold-light: #33aaff;
  --sein-gold-dim: #0070c0;
  --sein-blue: #4a9ed6;
  --sein-blue-light: #7bb8e0;
  --sein-red: #ff0000;
  --sein-green: #5cb85c;
  --sein-surface: #1a1d23;
  --sein-surface-alt: #22262e;
  --sein-border: #2e3440;
  --sein-text: #d8dee9;
  --sein-text-dim: #8892a0;

  /* Material overrides */
  --md-primary-fg-color: var(--sein-gold);
  --md-primary-fg-color--light: var(--sein-gold-light);
  --md-primary-fg-color--dark: var(--sein-gold-dim);
  --md-accent-fg-color: var(--sein-blue);
  --md-accent-fg-color--transparent: rgba(74, 158, 214, 0.12);
}

/* --- Dark Scheme (Default) --- */
[data-md-color-scheme="slate"] {
  --md-default-bg-color: var(--sein-surface);
  --md-default-fg-color: var(--sein-text);
  --md-default-fg-color--light: var(--sein-text-dim);
  --md-code-bg-color: var(--sein-surface-alt);
  --md-typeset-a-color: var(--sein-blue);
  --md-primary-fg-color: var(--sein-gold);
  --md-accent-fg-color: var(--sein-blue);
}

/* --- Light Scheme --- */
[data-md-color-scheme="seinarts-light"] {
  --sein-surface: #ffffff;
  --sein-surface-alt: #eef2f6;
  --sein-border: #d7dde8;
  --sein-text: #1e2128;
  --sein-text-dim: #667085;
  --sein-blue-light: #2e7bb5;
  --md-default-bg-color: #f8f9fb;
  --md-default-fg-color: #1e2128;
  --md-default-fg-color--light: #5a6270;
  --md-code-bg-color: #eceef2;
  --md-typeset-a-color: #2e7bb5;
  --md-primary-fg-color: #0070c0;
  --md-accent-fg-color: #2e7bb5;
}

/* Underlying page canvas for mobile overscroll / area beyond footer */
html,
body {
  background: #000;
}

/* Keep the visible docs surfaces on the normal theme background */
.md-container,
.md-main,
.md-main__inner {
  background: var(--md-default-bg-color);
}

/* --- Header --- */
.md-header {
  background: #000;
  border-bottom: 1px solid var(--sein-border);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.6);
}

.md-header__title {
  font-weight: 700;
  letter-spacing: 0.02em;
}

.md-header__button.md-logo img,
.md-header__button.md-logo svg {
  height: 32px; /* ← tweak header logo size here */
  width: auto;
}

/* Gold accent line under header */
.md-header::after {
  content: "";
  display: block;
  height: 2px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--sein-gold-dim) 20%,
    var(--sein-gold) 50%,
    var(--sein-gold-dim) 80%,
    transparent 100%
  );
}

/* --- Inline Header Nav (replaces tabs) --- */
.md-header__inner {
  align-items: center;
}

.md-header__inline-nav {
  display: flex;
  align-items: center;
  gap: 0.1rem;
  flex-shrink: 0;
}

.md-header__spacer {
  flex: 1 1 auto;
}

.md-header-inline__link {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.6rem;
  font-weight: 400;
  letter-spacing: 0.01em;
  padding: 0.45em 0.85em;
  border-radius: 4px;
  white-space: nowrap;
  transition:
    background 0.15s,
    color 0.15s;
  text-decoration: none;
}

.md-header-inline__link:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.md-header-inline__link--active {
  color: var(--sein-gold) !important;
  background: rgba(0, 149, 255, 0.1);
}

/* Hide inline nav on mobile — hamburger takes over */
@media (max-width: 76.1875em) {
  .md-header__inline-nav {
    display: none;
  }

  .md-header__button .md-visually-hidden {
    display: none;
  }
}

@media (min-width: 76.1876em) {
  .md-sidebar--primary .md-nav--primary > .md-nav__title[for="__drawer"] {
    display: none;
  }
}

/* --- Mobile Drawer --- */
.md-nav--primary > .md-nav__title[for="__drawer"] {
  background: #000 !important;
  color: transparent !important;
  font-size: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 6.8rem;
  padding: 0;
}

.md-nav--primary > .md-nav__title[for="__drawer"] .md-nav__button {
  color: inherit;
  margin: 0;
}

.md-nav--primary > .md-nav__title[for="__drawer"] .md-nav__button.md-logo {
  position: static;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  padding: 0;
}

.md-nav--primary > .md-nav__title[for="__drawer"] .md-logo img,
.md-nav--primary > .md-nav__title[for="__drawer"] .md-logo svg {
  display: block;
  margin: 0 auto;
}

.md-nav--primary .md-nav__source {
  background: #0b0d11 !important;
}

@media (max-width: 76.1875em) {
  .md-nav--primary
    .md-nav:not(.md-nav--secondary)
    > .md-nav__title:not([for="__drawer"]) {
    background: #000 !important;
    color: #fff !important;
  }

  .md-nav--primary
    .md-nav:not(.md-nav--secondary)
    > .md-nav__title:not([for="__drawer"])
    .md-nav__icon,
  .md-nav--primary
    .md-nav:not(.md-nav--secondary)
    > .md-nav__title:not([for="__drawer"])
    .md-ellipsis {
    color: #fff !important;
  }

  .md-nav--primary label.md-nav__link[for="__toc"],
  .md-nav--primary .md-nav--secondary {
    display: none !important;
  }
}

/* --- Sidebar --- */
.md-sidebar__scrollwrap {
  scrollbar-color: var(--sein-border) transparent;
}

.md-nav__link--active {
  color: var(--sein-blue) !important;
  font-weight: 700;
}

.md-nav__link:hover {
  color: var(--sein-blue) !important;
}

/* --- Content --- */
.md-typeset h1 {
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--md-default-fg-color);
  border-bottom: 2px solid var(--sein-border);
  padding-bottom: 0.4em;
}

.md-typeset h2 {
  font-weight: 700;
  color: var(--md-default-fg-color);
  border-bottom: 1px solid var(--sein-border);
  padding-bottom: 0.3em;
}

.md-typeset h3 {
  font-weight: 600;
  color: var(--md-default-fg-color);
}

/* --- Code Blocks --- */
.md-typeset code {
  border-radius: 4px;
  padding: 0.1em 0.4em;
  font-size: 0.85em;
}

.md-typeset pre > code {
  border-radius: 8px;
  border: 1px solid var(--sein-border);
}

.highlight .hll {
  background-color: rgba(0, 149, 255, 0.12);
}

/* Line numbers */
.md-typeset .linenums ol li {
  border-left: 2px solid var(--sein-border);
}

.md-typeset .linenums ol li:hover {
  border-left-color: var(--sein-gold);
}

/* --- Admonitions --- */
/* Custom "sim" admonition for simulation-layer notes */
.md-typeset .admonition.sim,
.md-typeset details.sim {
  border-color: var(--sein-gold);
}

.md-typeset .sim > .admonition-title,
.md-typeset .sim > summary {
  background-color: rgba(0, 149, 255, 0.1);
}

.md-typeset .sim > .admonition-title::before,
.md-typeset .sim > summary::before {
  background-color: var(--sein-gold);
  -webkit-mask-image: var(--md-admonition-icon--abstract);
  mask-image: var(--md-admonition-icon--abstract);
}

/* Custom "render" admonition for render-layer notes */
.md-typeset .admonition.render,
.md-typeset details.render {
  border-color: var(--sein-blue);
}

.md-typeset .render > .admonition-title,
.md-typeset .render > summary {
  background-color: rgba(74, 158, 214, 0.1);
}

.md-typeset .render > .admonition-title::before,
.md-typeset .render > summary::before {
  background-color: var(--sein-blue);
  -webkit-mask-image: var(--md-admonition-icon--info);
  mask-image: var(--md-admonition-icon--info);
}

/* --- Tables --- */
.md-typeset table:not([class]) {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--sein-border);
}

.md-typeset table:not([class]) th {
  background: var(--sein-surface-alt);
  color: var(--md-default-fg-color);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.75em;
  letter-spacing: 0.06em;
}

.md-typeset table:not([class]) tr:hover td {
  background: rgba(74, 158, 214, 0.04);
}

/* --- Footer --- */
.md-footer {
  background: #000;
  border-top: 1px solid var(--sein-border);
  margin-top: 2rem;
}

.md-footer-meta {
  background: #000;
}

.md-footer-meta__inner {
  align-items: center;
}

/* --- Phenom Copyright Branding --- */
.phenom-copyright {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0;
  margin-left: 0.5rem;
}

.phenom-wordmark-link {
  display: inline-flex;
  align-items: center;
  cursor: pointer;
}

.phenom-wordmark {
  height: 32px !important; /* tweak footer logo size here */
  width: auto !important;
  max-height: 32px !important;
  vertical-align: middle;
}

.phenom-copyright-text {
  color: var(--sein-text-dim);
  font-size: 0.68rem;
  white-space: nowrap;
}

/* --- Search --- */
.md-search__input {
  border-radius: 8px;
}

/* --- Misc --- */
.md-typeset .md-button--primary {
  background-color: var(--sein-gold);
  border-color: var(--sein-gold);
  color: #000;
  font-weight: 700;
}

.md-typeset .md-button--primary:hover {
  background-color: var(--sein-gold-light);
  border-color: var(--sein-gold-light);
}

/* Blueprint-style callout boxes */
.md-typeset .bp-node {
  background: var(--sein-surface-alt);
  border: 1px solid var(--sein-border);
  border-left: 4px solid var(--sein-blue);
  border-radius: 6px;
  padding: 1em 1.2em;
  margin: 1em 0;
}

.md-typeset .bp-node code {
  color: var(--sein-blue-light);
}

/* Tag pills */
.md-typeset .tag {
  display: inline-block;
  background: var(--sein-surface-alt);
  border: 1px solid var(--sein-border);
  border-radius: 12px;
  padding: 0.1em 0.6em;
  font-size: 0.75em;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.md-typeset .tag.sim {
  color: var(--sein-gold);
  border-color: var(--sein-gold-dim);
}
.md-typeset .tag.render {
  color: var(--sein-blue);
  border-color: var(--sein-blue);
}
.md-typeset .tag.bp {
  color: var(--sein-green);
  border-color: var(--sein-green);
}

/* Hide auto-injected page title on homepage */
.md-typeset:has(.sein-hero) > h1:first-child,
.md-content__inner:has(.sein-hero) > h1:first-child {
  display: none;
}

.sein-hero-buttons {
  display: flex;
  flex-wrap: nowrap;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0;
}

.sein-hero-buttons .md-button {
  margin: 0;
}

.sein-hero-button-secondary {
  background-color: transparent !important;
  border-color: var(--sein-gold) !important;
  color: var(--sein-gold) !important;
}

.sein-hero-button-secondary:hover {
  background-color: rgba(0, 149, 255, 0.12) !important;
  border-color: var(--sein-gold-light) !important;
  color: var(--sein-gold-light) !important;
}

[data-md-color-scheme="slate"] .sein-hero-wordmark--light,
[data-md-color-scheme="seinarts-light"] .sein-hero-wordmark--dark {
  display: none;
}

@media (max-width: 640px) {
  .sein-hero-buttons {
    flex-wrap: wrap;
  }
}

/* Hero section for landing page */
.sein-hero {
  text-align: center;
  padding: 3rem 1rem;
  margin-bottom: 2rem;
}

.sein-hero h1 {
  font-size: 2.8rem;
  font-weight: 900;
  background: linear-gradient(
    135deg,
    var(--sein-gold) 0%,
    var(--sein-gold-light) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  border: none;
  padding: 0;
  margin-bottom: 0.5rem;
}

.sein-hero-wordmark {
  width: clamp(280px, 45vw, 560px);
  height: auto;
  margin: 0 auto 1.5rem;
  display: block;
}

.sein-overview-wordmark {
  margin: 1rem 0 4rem;
}

.sein-overview-wordmark__image {
  width: clamp(250px, 34vw, 440px);
  margin-bottom: 0;
}

.sein-hero-byline {
  font-size: 1.2rem;
  color: var(--sein-text-dim);
  max-width: 34ch;
  margin: 0 auto 2rem;
  line-height: 1.55;
}

.sein-hero-byline__line {
  display: block;
}

/* Feature cards grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.2rem;
  margin: 2rem 0;
}

.feature-card {
  background: var(--sein-surface-alt);
  border: 1px solid var(--sein-border);
  border-radius: 10px;
  padding: 1.5rem;
  transition:
    border-color 0.2s,
    transform 0.2s;
}

.feature-card:hover {
  border-color: var(--sein-gold-dim);
  transform: translateY(-2px);
}

.feature-card h3 {
  color: var(--md-default-fg-color);
  margin-top: 0;
  font-size: 1.1rem;
  border: none;
  padding: 0;
}

.feature-card p {
  color: var(--sein-text-dim);
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* Responsive tweaks */
@media (max-width: 768px) {
  .sein-hero h1 {
    font-size: 2rem;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
}