/* ============================================
   EmergencyForge — COMMAND CENTER THEME
   Dark-only. Authoritative. Precise.
   ============================================ */

/* ── Design Tokens ── */
[data-md-color-scheme="slate"] {
  /* Brand */
  --ef-red: #C62828;
  --ef-red-light: #E53935;
  --ef-red-dark: #8E0000;
  --ef-red-glow: rgba(198, 40, 40, 0.3);

  /* Surfaces — darkest to lightest */
  --ef-surface-0: #080b10;
  --ef-surface-1: #0a0e13;
  --ef-surface-2: #0f1419;
  --ef-surface-3: #161c24;
  --ef-surface-4: #1e2630;

  /* Borders */
  --ef-border-subtle: rgba(255, 255, 255, 0.04);
  --ef-border-medium: rgba(255, 255, 255, 0.06);
  --ef-border-red: rgba(198, 40, 40, 0.15);

  /* MkDocs Material overrides */
  --md-default-bg-color: var(--ef-surface-1);
  --md-default-bg-color--light: var(--ef-surface-2);
  --md-default-bg-color--lighter: var(--ef-surface-3);
  --md-default-bg-color--lightest: var(--ef-surface-4);
  --md-code-bg-color: var(--ef-surface-2);
  --md-primary-fg-color: var(--ef-red);
  --md-primary-fg-color--light: var(--ef-red-light);
  --md-primary-fg-color--dark: var(--ef-red-dark);
  --md-accent-fg-color: var(--ef-red-light);
  --md-typeset-color: rgba(220, 228, 236, 0.9);
}

/* ============================================
   HEADER
   ============================================ */

@property --ef-glow-opacity {
  syntax: "<number>";
  initial-value: 0.15;
  inherits: false;
}

@keyframes ambientGlow {
  0%, 100% { --ef-glow-opacity: 0.08; }
  50% { --ef-glow-opacity: 0.2; }
}

.md-header {
  background: var(--ef-surface-0);
  border-bottom: 1px solid var(--ef-border-red);
  box-shadow: 0 1px 20px rgba(198, 40, 40, var(--ef-glow-opacity));
  animation: ambientGlow 20s ease infinite;
}

.md-tabs {
  background: var(--ef-surface-1);
  border-bottom: 1px solid var(--ef-border-subtle);
}

/* ============================================
   SIDEBAR
   ============================================ */

.md-nav--primary > .md-nav__list > .md-nav__item > .md-nav__link {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ef-red-light);
}

.md-sidebar {
  background: var(--ef-surface-0);
}

.md-sidebar--secondary {
  background: var(--ef-surface-1);
}

/* ============================================
   NAVIGATION
   ============================================ */

.md-tabs__link {
  position: relative;
  transition: color 0.25s ease, transform 0.2s ease;
  font-weight: 500;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
}

.md-tabs__link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--ef-red);
  transition: width 0.3s ease, left 0.3s ease;
  border-radius: 2px;
}

.md-tabs__link:hover::after,
.md-tabs__link--active::after {
  width: 100%;
  left: 0;
}

.md-tabs__link:hover {
  transform: translateY(-1px);
}

.md-nav__link {
  transition: color 0.2s ease, padding-left 0.2s ease, background 0.2s ease;
  border-radius: 4px;
  font-size: 0.78rem;
}

.md-nav__link:hover {
  padding-left: 0.8rem;
  background: rgba(198, 40, 40, 0.06);
  color: var(--ef-red);
}

.md-nav__link--active {
  border-left: 3px solid var(--ef-red);
  padding-left: 0.6rem;
  font-weight: 600;
  color: var(--ef-red);
}

/* ============================================
   CARDS
   ============================================ */

@keyframes cardSlideUp {
  from {
    opacity: 0;
    transform: translateY(24px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.grid.cards > ul {
  perspective: 1000px;
}

.grid.cards > ul > li,
.md-typeset .grid.cards > ul > li {
  animation: cardSlideUp 0.6s cubic-bezier(0.22, 1, 0.36, 1) forwards;
  opacity: 0;
  transition: box-shadow 0.4s cubic-bezier(0.22, 1, 0.36, 1),
              border-color 0.3s ease;
  border: 1px solid var(--ef-border-subtle);
  border-left: 3px solid var(--ef-red);
  position: relative;
  overflow: hidden;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.4);
  transform-style: preserve-3d;
  background: rgba(255, 255, 255, 0.015);
}

.grid.cards > ul > li:nth-child(1) { animation-delay: 0.05s; }
.grid.cards > ul > li:nth-child(2) { animation-delay: 0.12s; }
.grid.cards > ul > li:nth-child(3) { animation-delay: 0.19s; }
.grid.cards > ul > li:nth-child(4) { animation-delay: 0.26s; }
.grid.cards > ul > li:nth-child(5) { animation-delay: 0.33s; }
.grid.cards > ul > li:nth-child(6) { animation-delay: 0.4s; }

.grid.cards > ul > li:hover,
.md-typeset .grid.cards > ul > li:hover {
  box-shadow:
    0 16px 40px rgba(198, 40, 40, 0.12),
    0 4px 16px rgba(0, 0, 0, 0.4);
  border-color: var(--ef-border-medium);
  border-left-color: var(--ef-red-light);
}

/* Gloss sweep */
.grid.cards > ul > li::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 50%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.025), transparent);
  transition: left 0.6s ease;
  z-index: 1;
  pointer-events: none;
}

.grid.cards > ul > li:hover::before {
  left: 150%;
}

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

/* ============================================
   TYPOGRAPHY
   ============================================ */

.md-typeset h1 {
  font-weight: 700;
  font-size: 1.8rem;
  letter-spacing: -0.01em;
  margin-bottom: 0.6em;
}

.md-typeset h2 {
  font-weight: 600;
  font-size: 1.3rem;
  border-bottom: 1px solid var(--ef-border-subtle);
  padding-bottom: 0.3em;
  margin-top: 1.8em;
}

.md-typeset h3 {
  font-weight: 600;
  font-size: 1.05rem;
}

.md-typeset h1,
.md-typeset h2,
.md-typeset h3 {
  scroll-margin-top: 4rem;
}

/* ============================================
   CONTENT
   ============================================ */

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

.md-typeset table:not([class]) {
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--ef-border-subtle);
}

.md-typeset table:not([class]) th {
  background: rgba(198, 40, 40, 0.15);
  color: var(--ef-red-light);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.md-typeset code {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--ef-border-subtle);
  font-size: 0.82em;
}

.md-typeset pre > code {
  background: var(--ef-surface-2);
  border: 1px solid var(--ef-border-medium);
}

.md-typeset .admonition,
.md-typeset details {
  background: rgba(255, 255, 255, 0.02);
  border-radius: 4px;
}

/* ============================================
   SCROLL-DRIVEN REVEAL
   ============================================ */

@supports (animation-timeline: view()) {
  .md-typeset h2,
  .md-typeset .admonition,
  .md-typeset details,
  .md-typeset table:not([class]),
  .md-typeset .grid.cards {
    animation: scrollReveal linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 30%;
  }

  @keyframes scrollReveal {
    from {
      opacity: 0.3;
      transform: translateY(16px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

@supports not (animation-timeline: view()) {
  .md-typeset h2,
  .md-typeset .admonition,
  .md-typeset details,
  .md-typeset table:not([class]) {
    animation: fadeIn 0.5s ease both;
  }
}

/* ============================================
   VIEW TRANSITIONS
   ============================================ */

::view-transition-old(root) {
  animation: pageOut 0.25s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

::view-transition-new(root) {
  animation: pageIn 0.35s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes pageOut {
  to { opacity: 0; transform: translateY(-8px); }
}

@keyframes pageIn {
  from { opacity: 0; transform: translateY(8px); }
}

.md-content {
  view-transition-name: content;
}

::view-transition-old(content) {
  animation: contentOut 0.2s ease forwards;
}

::view-transition-new(content) {
  animation: contentIn 0.3s cubic-bezier(0.22, 1, 0.36, 1) forwards;
  animation-delay: 0.05s;
}

@keyframes contentOut {
  to { opacity: 0; transform: translateX(-12px); }
}

@keyframes contentIn {
  from { opacity: 0; transform: translateX(12px); }
}

/* ============================================
   BREADCRUMBS
   ============================================ */

.md-path {
  font-size: 0.7rem;
  opacity: 0.65;
  letter-spacing: 0.02em;
}

.md-path__link {
  transition: color 0.2s ease, opacity 0.2s ease;
}

.md-path__link:hover {
  color: var(--ef-red-light);
  opacity: 1;
}

/* ============================================
   SEARCH
   ============================================ */

.md-search__form {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--ef-border-medium);
  border-radius: 4px;
}

.md-search__form:hover,
.md-search__form:focus-within {
  border-color: rgba(198, 40, 40, 0.4);
  box-shadow: 0 0 0 2px rgba(198, 40, 40, 0.1);
}

/* ============================================
   FOOTER
   ============================================ */

.md-footer {
  border-top: none;
  position: relative;
  background: var(--ef-surface-0);
}

.md-footer::after {
  content: "";
  position: absolute;
  top: 0;
  left: 10%;
  width: 80%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--ef-red), transparent);
}

.md-footer-meta {
  padding: 1.2rem 0;
  background: transparent;
}

.md-footer__inner {
  background: var(--ef-surface-0);
}

.md-social__link svg {
  transition: transform 0.2s ease, filter 0.2s ease;
}

.md-social__link:hover svg {
  transform: translateY(-2px);
  filter: drop-shadow(0 2px 6px var(--ef-red-glow));
}

.md-copyright {
  opacity: 0.6;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  transition: opacity 0.2s ease;
}

.md-copyright:hover {
  opacity: 1;
}

/* ============================================
   UTILITY ANIMATIONS
   ============================================ */

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.md-content:not([data-navigated]) {
  animation: fadeIn 0.4s ease;
}

/* ============================================
   SCROLLBAR
   ============================================ */

/* Firefox */
* {
  scrollbar-width: thin;
  scrollbar-color: rgba(198, 40, 40, 0.3) transparent;
}

/* Webkit */
::-webkit-scrollbar {
  width: 5px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(198, 40, 40, 0.3);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--ef-red);
}

/* ============================================
   PROGRESS BAR
   ============================================ */

.md-progress {
  background: var(--ef-red);
}


/* ============================================
   INLINE BADGES
   ============================================ */

.ef-badge {
  display: inline-block;
  padding: 0.15em 0.55em;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: 3px;
  vertical-align: middle;
  margin-left: 0.3em;
}

.ef-badge--required {
  background: rgba(198, 40, 40, 0.15);
  color: var(--ef-red-light);
  border: 1px solid rgba(198, 40, 40, 0.25);
}

.ef-badge--optional {
  background: rgba(33, 150, 243, 0.12);
  color: #64B5F6;
  border: 1px solid rgba(33, 150, 243, 0.2);
}

.ef-badge--new {
  background: rgba(76, 175, 80, 0.12);
  color: #81C784;
  border: 1px solid rgba(76, 175, 80, 0.2);
}

.ef-badge--deprecated {
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.ef-badge--version {
  background: rgba(198, 40, 40, 0.1);
  color: var(--ef-red-light);
  border: 1px solid var(--ef-border-red);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.65rem;
  letter-spacing: 0;
  text-transform: none;
}

/* ============================================
   RELATED PAGES
   ============================================ */

.ef-related {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--ef-border-subtle);
}

.ef-related__title {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ef-red-light);
  margin-bottom: 0.8rem;
}

.ef-related__links {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.ef-related__link {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  padding: 0.5em 1em;
  font-size: 0.8rem;
  background: var(--ef-surface-2);
  border: 1px solid var(--ef-border-subtle);
  border-radius: 6px;
  color: var(--md-typeset-color);
  text-decoration: none;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.ef-related__link:hover {
  border-color: var(--ef-red);
  background: rgba(198, 40, 40, 0.06);
}

/* ============================================
   404 PAGE
   ============================================ */

.ef-404 {
  text-align: center;
  padding: 4rem 1rem;
}

.ef-404__code {
  font-size: 6rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--ef-red);
  opacity: 0.3;
  margin-bottom: 0.2em;
}

.ef-404__title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5em;
}

.ef-404__text {
  opacity: 0.6;
  margin-bottom: 2em;
}

.ef-404__actions {
  display: flex;
  justify-content: center;
  gap: 0.8rem;
  flex-wrap: wrap;
}

/* ============================================
   SCROLL PROGRESS on TOC
   ============================================ */

.md-sidebar--secondary {
  position: relative;
}

.md-sidebar--secondary::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 2px;
  height: var(--ef-scroll-progress, 0%);
  background: var(--ef-red);
  transition: height 0.15s ease-out;
  border-radius: 1px;
  opacity: 0.6;
}

/* ============================================
   REDUCED MOTION
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .md-header {
    animation: none !important;
    background: var(--ef-surface-0) !important;
  }

  ::view-transition-old(root),
  ::view-transition-new(root),
  ::view-transition-old(content),
  ::view-transition-new(content) {
    animation: none !important;
  }
}