/* ============================================================
   THE ROAD TO DOOMSDAY — design tokens + shared components
   Dark canvas, saga amber/violet, terminal green, mono metadata.
   ============================================================ */

:root {
  /* color tokens */
  --bg: #0b0d14;
  --surface: #12151f;
  --field: #131726;
  --border: #1c2233;
  --border-hover: #3a4666;
  --text: #e8eaf2;
  --text-soft: #cdd3e3;
  --muted: #8b93a8;
  --muted-dim: #6b7390;
  --terminal: #46c46e;
  --infinity: #d9a441;
  --multiverse: #8b7cf6;

  /* spacing (base 4) */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-6: 24px;
  --sp-8: 32px;
  --sp-12: 48px;
  --sp-16: 64px;
  --sp-24: 96px;

  /* radius */
  --r-control: 6px;
  --r-card: 10px;
  --r-pill: 20px;
  --r-dot: 999px;

  /* fonts */
  --font-display: 'Barlow Condensed', sans-serif;
  --font-body: 'Barlow', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
}

a { color: #93c5fd; text-decoration: none; }
a:hover { color: #bfdbfe; }

img, svg { max-width: 100%; }

::selection { background: rgba(70,196,110,0.3); }

/* ── layout shell ── */
.page {
  max-width: 1440px;
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  padding: 0 40px;
}

@media (max-width: 900px) {
  .container { padding: 0 20px; }
}

/* ── header / nav ── */
.site-header {
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 18px 40px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand span {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: 2.5px;
  white-space: nowrap;
}

.brand a { color: var(--text); }
.brand a:hover { color: var(--text); }

.nav-links {
  display: flex;
  gap: 22px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1.5px;
  color: var(--muted);
  flex-wrap: wrap;
}

.nav-links a { color: var(--muted); }
.nav-links a:hover { color: var(--text); }
.nav-links a.active { color: var(--text); }

.search-box {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  background: var(--field);
  border: 1px solid var(--border-hover);
  border-radius: var(--r-control);
  color: #5b6378;
  font-size: 12px;
}

.search-box kbd {
  font-family: var(--font-mono);
  font-size: 10px;
  border: 1px solid var(--border-hover);
  border-radius: 3px;
  padding: 1px 5px;
}

.search-input {
  font-family: var(--font-body);
  font-size: 13px;
  padding: 8px 14px;
  border-radius: var(--r-control);
  background: var(--field);
  border: 1px solid var(--border-hover);
  color: var(--text);
  width: 240px;
}

.search-input::placeholder { color: #5b6378; }

.crumbs {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--muted-dim);
}
.crumbs .sep { color: #3a415a; margin: 0 4px; }
.crumbs .current { color: var(--text); }

/* ── mobile nav: hamburger + drawer ── */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid var(--border-hover);
  border-radius: var(--r-control);
  color: var(--text);
  cursor: pointer;
  flex-shrink: 0;
}
.nav-toggle:hover { border-color: #556; }

@media (max-width: 900px) {
  .site-header { gap: 12px; padding: 14px 16px; }
  .nav-links, .crumbs, .search-box { display: none; }
  .nav-toggle { display: flex; margin-left: auto; }
}

.nav-drawer {
  position: fixed;
  top: 0;
  right: -320px;
  width: min(300px, 84vw);
  height: 100%;
  background: var(--surface);
  border-left: 1px solid var(--border);
  padding: 24px 16px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow-y: auto;
  transition: right 220ms ease;
}
.nav-drawer.is-open { right: 0; }

.nav-drawer a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  border-radius: var(--r-control);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 1.5px;
  color: var(--muted);
}
.nav-drawer a:hover { background: var(--field); color: var(--text); }
.nav-drawer a.active { background: rgba(70,196,110,0.1); color: var(--terminal); }

.nav-drawer-close {
  align-self: flex-end;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  color: var(--muted);
  font-size: 18px;
  cursor: pointer;
  margin-bottom: 8px;
}
.nav-drawer-close:hover { color: var(--text); }

.nav-drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
}
.nav-drawer-backdrop.is-open { opacity: 1; pointer-events: auto; }

@media (prefers-reduced-motion: reduce) {
  .nav-drawer, .nav-drawer-backdrop { transition: none; }
}

/* ── footer ── */
.site-footer {
  display: flex;
  gap: 40px;
  padding: 22px 40px;
  border-top: 1px solid var(--border);
  align-items: center;
  flex-wrap: wrap;
  margin-top: auto;
}

.site-footer .fill { margin-left: auto; }

.footer-note {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1.5px;
  color: var(--muted-dim);
}

/* ── typography helpers ── */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--terminal);
}

.label-mono {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--muted);
  text-transform: uppercase;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  margin: 0;
}

.h-display { font-size: 92px; line-height: 0.94; letter-spacing: 1px; }
.h1 { font-size: 44px; line-height: 1; letter-spacing: 1px; }
.h2 { font-size: 28px; font-weight: 600; letter-spacing: 0.5px; }

p { font-size: 16px; line-height: 1.6; color: var(--text-soft); margin: 0; }

/* ── buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  border-radius: var(--r-control);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  letter-spacing: 1px;
  cursor: pointer;
  border: none;
  transition: box-shadow 180ms, border-color 180ms, background 180ms;
}

.btn-primary { background: var(--infinity); color: var(--bg); }
.btn-primary:hover { box-shadow: 0 0 18px rgba(217,164,65,0.4); }

.btn-ghost { background: transparent; border: 1px solid var(--border-hover); color: var(--text); }
.btn-ghost:hover { border-color: #556; }

.btn-terminal {
  background: rgba(70,196,110,0.12);
  border: 1px solid var(--terminal);
  color: var(--terminal);
  box-shadow: 0 0 16px rgba(70,196,110,0.35);
}
.btn-terminal:hover { box-shadow: 0 0 24px rgba(70,196,110,0.5); }

.btn-small { padding: 8px 16px; font-size: 15px; border-radius: var(--r-control); }

/* ── badges / chips ── */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 1.5px;
}

.badge-essential { background: var(--terminal); color: var(--bg); }
.badge-recommended { background: var(--infinity); color: var(--bg); }
.badge-optional { border: 1px solid var(--multiverse); color: var(--multiverse); }
.badge-skippable { border: 1px solid #3a415a; color: var(--muted-dim); }
.badge-infinity { background: rgba(217,164,65,0.15); color: var(--infinity); }
.badge-multiverse { background: rgba(139,124,246,0.15); color: #a99df8; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--r-pill);
  border: 1px solid var(--border-hover);
  color: #bcd0f7;
  font-size: 13px;
  background: rgba(255,255,255,0.02);
}

.chip.dot::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--terminal);
}

.chip-link { cursor: pointer; }
.chip-link:hover { border-color: var(--border-hover); color: var(--text); }

/* ── cards ── */
.card {
  background: var(--surface);
  border: 1px solid #262d42;
  border-radius: var(--r-card);
  padding: 22px;
}

.card-glow-terminal { border-color: #2b4636; box-shadow: 0 0 24px rgba(70,196,110,0.08); }

.card-hover { cursor: pointer; transition: border-color 180ms; }
.card-hover:hover { border-color: var(--border-hover); }

/* ── section shell used on every inner page ── */
.panel {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

/* ── motion ── */
@keyframes termPulse { 0%,100% { opacity: 0.5; } 50% { opacity: 1; } }
@keyframes fadeRise {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.reveal {
  animation: fadeRise 400ms cubic-bezier(0.22,1,0.36,1) both;
}

@media (prefers-reduced-motion: reduce) {
  .reveal, .pulse { animation: none !important; }
}

.pulse { animation: termPulse 2.4s ease-in-out infinite; }

/* ── scroll containers for wide content ── */
.scroll-x { overflow-x: auto; }

/* ── starfield background dots (home hero) ── */
.starfield {
  background-image:
    radial-gradient(1.5px 1.5px at 12% 25%, rgba(232,234,242,0.5), transparent),
    radial-gradient(1px 1px at 30% 70%, rgba(232,234,242,0.35), transparent),
    radial-gradient(1px 1px at 48% 15%, rgba(232,234,242,0.4), transparent),
    radial-gradient(1.5px 1.5px at 65% 55%, rgba(232,234,242,0.3), transparent),
    radial-gradient(1px 1px at 82% 30%, rgba(232,234,242,0.45), transparent),
    radial-gradient(1px 1px at 92% 75%, rgba(232,234,242,0.35), transparent),
    radial-gradient(1px 1px at 20% 88%, rgba(232,234,242,0.3), transparent),
    radial-gradient(1.5px 1.5px at 55% 85%, rgba(232,234,242,0.25), transparent);
}