/**
 * SKRAFT Docs — site overrides
 * Overrides design-tokens.css with the green "Tech Glass" palette
 * from the portfolio layout.
 */

:root {
  /* Green palette (portfolio overrides) */
  --color-background: #0e1618;
  --color-foreground: #e9f7ef;
  --color-primary:    #4ed58a;
  --color-highlight:  #8be5b1;
  --color-dimmed:     #b8d0c1;
  --color-stripe:     rgba(139, 229, 177, 0.14);

  --gradient-overlay: linear-gradient(
    135deg,
    rgba(78, 213, 138, 0.08) 0%,
    rgba(78, 213, 138, 0.03) 50%,
    rgba(0, 0, 0, 0) 50%,
    rgba(0, 0, 0, 0.2) 100%
  );

  /* Green glass tokens */
  --glass-bg:            rgba(15, 27, 24, 0.9);
  --glass-bg-strong:     rgba(10, 20, 18, 0.95);
  --glass-border:        rgba(139, 229, 177, 0.22);
  --glass-border-strong: rgba(139, 229, 177, 0.34);
  --glass-highlight:     rgba(233, 247, 239, 0.12);
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background-color: var(--color-background);
  background-image:
    radial-gradient(circle at 80% 10%, rgba(78, 213, 138, 0.12), transparent 28%),
    var(--gradient-overlay);
  color: var(--color-foreground);
  font-family: var(--font-sans);
  font-size: 18px;
  line-height: 1.65;
  letter-spacing: 0.2px;
}
a {
  color: var(--color-highlight);
  text-decoration: none;
  transition: opacity var(--transition);
}
a:hover { opacity: 0.8; text-decoration: underline; }

/* ============================================================
   GLASS PRIMITIVES
   ============================================================ */
.glass-nav,
.glass-surface,
.glass-card,
.glass-chip {
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  box-shadow: var(--glass-shadow);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
}
.glass-card {
  border-radius: var(--radius-card);
  transition: transform var(--motion-fast), border-color var(--motion-fast),
              box-shadow var(--motion-fast), background var(--motion-fast);
}
.glass-card:hover {
  border-color: var(--glass-border-strong);
  box-shadow: var(--glass-shadow-hover);
  transform: translateY(-2px);
}
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .glass-nav, .glass-surface, .glass-card, .glass-chip {
    background: var(--glass-bg-strong);
    border-color: var(--glass-border-strong);
  }
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.5rem;
  background: var(--glass-bg-strong);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: 0 8px 28px rgba(4, 12, 18, 0.28);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
}
.site-nav__brand {
  display: flex;
  align-items: center;
  gap: 0.45em;
  font-size: 1.05rem;
  font-weight: 900;
  letter-spacing: 1px;
  color: var(--color-foreground);
  margin-right: auto;
}
.site-nav__brand i { color: var(--color-highlight); }
.site-nav__brand span { color: var(--color-highlight); }
.site-nav__brand:hover { opacity: 0.85; text-decoration: none; }

.site-nav__burger {
  display: none;
  background: none;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  color: var(--color-foreground);
  font-size: 1rem;
  padding: 0.35em 0.6em;
  cursor: pointer;
}

.site-nav__links {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.site-nav a {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--color-dimmed);
  padding: 0.3em 0.7em;
  border-radius: var(--radius);
  transition: color var(--motion-fast), background var(--motion-fast);
  border: 1px solid transparent;
}
.site-nav a i { font-size: 0.85em; opacity: 0.9; }
.site-nav a:hover,
.site-nav a.active {
  color: var(--color-foreground);
  background: rgba(139, 229, 177, 0.16);
  border-color: rgba(139, 229, 177, 0.28);
  text-decoration: none;
  opacity: 1;
}
.site-nav a.active { color: var(--color-highlight); }
.site-nav__lang {
  margin-left: 0.5rem;
  padding-left: 0.75rem;
  border-left: 1px solid var(--glass-border);
}

/* Dropdown (shared portfolio nav) */
.nav-dropdown { position: relative; }
.nav-dropdown__trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--color-dimmed);
  background: none;
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 0.3em 0.7em;
  cursor: pointer;
  transition: color var(--motion-fast), background var(--motion-fast);
}
.nav-dropdown__trigger:hover,
.nav-dropdown.is-open .nav-dropdown__trigger {
  color: var(--color-foreground);
  background: rgba(139, 229, 177, 0.16);
  border-color: rgba(139, 229, 177, 0.28);
}
.nav-dropdown__menu {
  position: absolute;
  top: calc(100% + 0.4rem);
  right: 0;
  min-width: 200px;
  display: none;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.4rem;
  background: var(--glass-bg-strong);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  box-shadow: 0 12px 32px rgba(4, 12, 18, 0.4);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  z-index: 120;
}
.nav-dropdown.is-open .nav-dropdown__menu { display: flex; }
.nav-dropdown__menu a { white-space: nowrap; }

/* ============================================================
   PAGE HEADER
   ============================================================ */
.page-header {
  position: relative;
  padding: 7rem 2rem 4rem;
  text-align: center;
  overflow: hidden;
}
.page-header__bg {
  position: absolute;
  inset: 0;
  background-image: url('https://raw.githubusercontent.com/SebastienDegodez/slide-marp/refs/heads/main/presentation/images/bg.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.35;
  z-index: 0;
}
.page-header__content {
  position: relative;
  z-index: 1;
  max-width: 700px;
  margin: 0 auto;
}
.page-header__eyebrow {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-highlight);
  margin-bottom: 0.75rem;
}
.page-header__title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 900;
  letter-spacing: 2px;
  color: var(--color-foreground);
  line-height: 1.1;
}
.page-header__subtitle {
  font-size: 1rem;
  color: var(--color-dimmed);
  margin-top: 1rem;
  font-style: italic;
}

/* ============================================================
   CONTENT AREA
   ============================================================ */
.content {
  max-width: 900px;
  margin: 0 auto;
  padding: 3rem 2rem 5rem;
}
.content h1 {
  font-size: 2rem;
  font-weight: 900;
  margin-bottom: 1.5rem;
  color: var(--color-foreground);
}
.content h2 {
  font-size: 1.5rem;
  font-weight: 900;
  margin: 2.5rem 0 1rem;
  color: var(--color-foreground);
  border-bottom: 1px solid var(--color-stripe);
  padding-bottom: 0.4rem;
}
.content h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 2rem 0 0.75rem;
  color: var(--color-highlight);
}
.content p { margin-bottom: 1rem; }
.content ul, .content ol {
  margin: 0.5rem 0 1.25rem 1.5rem;
}
.content li { margin-bottom: 0.35rem; }
.content blockquote {
  border-left: 3px solid var(--color-highlight);
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  background: var(--glass-bg);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--color-dimmed);
  font-style: italic;
}
.content blockquote p { margin-bottom: 0.25rem; }
.content code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: rgba(139, 229, 177, 0.12);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  color: var(--color-highlight);
}
.content pre {
  background: var(--glass-bg-strong);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  overflow-x: auto;
  margin: 1rem 0 1.5rem;
}
.content pre code {
  background: none;
  padding: 0;
  color: var(--color-foreground);
  font-size: 0.85rem;
}
.content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0 1.5rem;
  font-size: 0.92rem;
}
.content th {
  text-align: left;
  font-weight: 700;
  color: var(--color-highlight);
  border-bottom: 2px solid var(--glass-border-strong);
  padding: 0.6rem 0.75rem;
}
.content td {
  border-bottom: 1px solid var(--glass-border);
  padding: 0.5rem 0.75rem;
  color: var(--color-dimmed);
}
.content tr:hover td {
  background: rgba(139, 229, 177, 0.04);
}
.content strong { color: var(--color-foreground); }
.content hr {
  border: none;
  border-top: 1px solid var(--color-stripe);
  margin: 2.5rem 0;
}
.content img {
  max-width: 100%;
  border-radius: var(--radius);
}

/* ============================================================
   CITATION ENTRIES (bibliography page)
   ============================================================ */
.citation-entry {
  margin-bottom: 1.25rem;
  padding-left: 1rem;
  border-left: 2px solid var(--glass-border);
}

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  text-align: center;
  padding: 2rem;
  font-size: 0.85rem;
  color: var(--color-dimmed);
  border-top: 1px solid var(--color-stripe);
}
footer a { color: var(--color-highlight); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 760px) {
  .site-nav { padding: 0.5rem 1rem; flex-wrap: wrap; }
  .site-nav__burger { display: inline-flex; align-items: center; }
  .site-nav__links {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0.3rem;
    width: 100%;
    margin-top: 0.6rem;
    padding-top: 0.6rem;
    border-top: 1px solid var(--glass-border);
  }
  .site-nav__links.is-open { display: flex; }
  .site-nav__links a { font-size: 0.85rem; padding: 0.5em 0.7em; }
  .nav-dropdown { width: 100%; }
  .nav-dropdown__trigger { width: 100%; justify-content: space-between; font-size: 0.85rem; }
  .nav-dropdown__menu {
    position: static;
    min-width: 0;
    padding: 0.2rem 0 0 0.8rem;
    background: none;
    border: none;
    box-shadow: none;
  }
  .site-nav__lang {
    margin: 0.3rem 0 0;
    padding: 0.5rem 0 0;
    border-left: none;
    border-top: 1px solid var(--glass-border);
  }
}
@media (max-width: 600px) {
  .content { padding: 2rem 1rem 3rem; }
  .page-header { padding: 6rem 1rem 3rem; }
}

/* ============================================================
   MERMAID ERROR FALLBACK
   ============================================================ */
.mermaid-error {
  display: block;
  padding: 1rem 1.25rem;
  border: 1px solid var(--glass-border-strong);
  border-left: 4px solid var(--color-primary);
  border-radius: 0.5rem;
  background: var(--glass-bg);
  color: var(--color-foreground);
  font-size: 0.9rem;
  line-height: 1.5;
}

/* ============================================================
   Splash — bilingual landing (root /)
   ============================================================ */
.splash {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  margin: 0;
}
.splash__main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem 1.5rem;
}
.splash__hero {
  max-width: 880px;
  text-align: center;
}
.splash__logo {
  display: block;
  width: min(540px, 82%);
  height: auto;
  margin: 0 auto 1.8rem;
  border-radius: 14px;
  border: 1px solid var(--glass-border);
  box-shadow: 0 18px 48px rgba(4, 12, 18, 0.45);
}
.splash__eyebrow {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-highlight);
  margin: 0 0 1rem;
}
.splash__title {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  line-height: 1.05;
  margin: 0 0 1.4rem;
}
.splash__title em {
  color: var(--color-highlight);
  font-style: normal;
}
.splash__pitch {
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--color-text-muted, #c3d3e6);
  max-width: 720px;
  margin: 0 auto 2.4rem;
}
.splash__doors {
  display: flex;
  gap: 1.2rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 2.6rem;
}
.splash__door {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  min-width: 220px;
  padding: 1.4rem 2rem;
  text-decoration: none;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius, 14px);
  box-shadow: var(--glass-shadow);
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.splash__door:hover {
  transform: translateY(-3px);
  border-color: var(--color-highlight);
}
.splash__door-flag { font-size: 2rem; line-height: 1; }
.splash__door-lang {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.1rem;
}
.splash__door-cta {
  font-size: 0.85rem;
  color: var(--color-highlight);
}
.splash__proof {
  list-style: none;
  padding: 0;
  margin: 0 auto 2rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  max-width: 760px;
}
.splash__proof li {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius, 14px);
}
.splash__proof strong { color: var(--color-highlight); font-size: 0.95rem; }
.splash__proof span { font-size: 0.8rem; color: var(--color-text-muted, #9fb4c8); }
.splash__sub {
  font-size: 0.85rem;
  color: var(--color-text-muted, #9fb4c8);
  max-width: 640px;
  margin: 0 auto;
}
.splash__footer {
  text-align: center;
  padding: 1.5rem;
  font-size: 0.8rem;
  color: var(--color-text-muted, #9fb4c8);
  border-top: 1px solid var(--glass-border);
}
@media (max-width: 640px) {
  .splash__proof { grid-template-columns: 1fr; }
}