/* ============================================================
   Claude Certified Architect — Foundations · landing page
   Theme: Nord  ·  Font: 0xProto Nerd Font (fallback JetBrains Mono)
   Vibe: terminal / CLI retro
   ============================================================ */

:root {
  /* Nord — Polar Night */
  --nord0: #2e3440;
  --nord1: #3b4252;
  --nord2: #434c5e;
  --nord3: #4c566a;
  /* Nord — Snow Storm */
  --nord4: #d8dee9;
  --nord5: #e5e9f0;
  --nord6: #eceff4;
  /* Nord — Frost */
  --nord7: #8fbcbb;
  --nord8: #88c0d0;
  --nord9: #81a1c1;
  --nord10: #5e81ac;
  /* Nord — Aurora */
  --nord11: #bf616a; /* red */
  --nord12: #d08770; /* orange */
  --nord13: #ebcb8b; /* yellow */
  --nord14: #a3be8c; /* green */
  --nord15: #b48ead; /* purple */

  --bg: #242933;          /* a touch darker than nord0 so the window pops */
  --fg: var(--nord4);
  --fg-bright: var(--nord6);
  --muted: #7b8694;
  --accent: var(--nord8); /* frost cyan */
  --accent-2: var(--nord14); /* green — prompts */
  --border: var(--nord3);

  --font-mono: "0xProto Nerd Font", "0xProto", "JetBrains Mono", "Fira Code",
    "SFMono-Regular", ui-monospace, "Cascadia Code", Menlo, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1.65;
  background-color: var(--bg);
  background-image:
    radial-gradient(900px 500px at 50% -10%, rgba(94, 129, 172, 0.18), transparent 70%);
  color: var(--fg);
  -webkit-font-smoothing: antialiased;
  padding: 2.5rem 1.25rem 4rem;
  min-height: 100vh;
}

/* ---- subtle CRT scanlines ---------------------------------- */
.scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0) 0,
    rgba(0, 0, 0, 0) 2px,
    rgba(0, 0, 0, 0.05) 3px,
    rgba(0, 0, 0, 0) 4px
  );
  mix-blend-mode: overlay;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

code {
  font-family: var(--font-mono);
  color: var(--nord13);
  background: rgba(136, 192, 208, 0.08);
  border: 1px solid rgba(136, 192, 208, 0.15);
  border-radius: 4px;
  padding: 0.05em 0.35em;
  font-size: 0.9em;
}

.comment { color: var(--muted); }
.accent { color: var(--accent); }

/* ============================================================
   Terminal window
   ============================================================ */
.term {
  max-width: 980px;
  margin: 0 auto;
  background: var(--nord0);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.2),
    0 24px 60px -20px rgba(0, 0, 0, 0.6),
    0 0 80px -40px rgba(136, 192, 208, 0.4);
}

.term__chrome {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1rem;
  background: var(--nord1);
  border-bottom: 1px solid var(--border);
}

.dot { width: 12px; height: 12px; border-radius: 50%; display: inline-block; }
.dot--red { background: var(--nord11); }
.dot--yellow { background: var(--nord13); }
.dot--green { background: var(--nord14); }

.term__title {
  flex: 1;
  text-align: center;
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  /* nudge left so it's optically centered despite the dots */
  margin-right: 52px;
}

.term__body { padding: 2.5rem clamp(1.25rem, 4vw, 3rem) 2.5rem; }

/* ---- prompt lines ------------------------------------------ */
.prompt {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 0.75rem;
}
.prompt__path { color: var(--accent-2); }
.prompt__sym { color: var(--accent); font-weight: 700; }

/* ============================================================
   Hero
   ============================================================ */
.hero { padding-bottom: 1rem; }

.hero__eyebrow {
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
}

.hero__title {
  font-size: clamp(1.9rem, 5.2vw, 3.1rem);
  line-height: 1.12;
  font-weight: 700;
  color: var(--fg-bright);
  letter-spacing: -0.01em;
  text-shadow: 0 0 22px rgba(136, 192, 208, 0.18);
  margin-bottom: 1.1rem;
}

.cursor {
  display: inline-block;
  margin-left: 0.15em;
  color: var(--accent);
  animation: blink 1.05s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.hero__lede {
  max-width: 60ch;
  color: var(--fg);
  font-size: 1.02rem;
  margin-bottom: 1.75rem;
}

/* ---- buttons ----------------------------------------------- */
.hero__cta { display: flex; flex-wrap: wrap; gap: 0.75rem; }

.btn {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 600;
  padding: 0.6rem 1rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: transparent;
  transition: all 0.15s ease;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }

.btn--primary {
  color: var(--nord0);
  background: var(--accent);
  border-color: var(--accent);
}
.btn--primary:hover { background: var(--nord7); border-color: var(--nord7); box-shadow: 0 0 18px -2px rgba(136, 192, 208, 0.5); }

.btn--ghost { color: var(--accent); }
.btn--ghost:hover { background: rgba(136, 192, 208, 0.1); border-color: var(--accent); }

/* ============================================================
   Sections
   ============================================================ */
.section { padding: 2.75rem 0; border-top: 1px dashed var(--nord2); }

.section__title {
  font-size: 1.2rem;
  color: var(--fg-bright);
  margin-bottom: 1.5rem;
  font-weight: 700;
}
.section__title .prompt__sym { color: var(--accent); margin-right: 0.4rem; }

.section__note {
  color: var(--fg);
  font-size: 0.95rem;
  max-width: 70ch;
  margin-top: 1.5rem;
}

/* ---- facts -------------------------------------------------- */
.facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}
.fact {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem 1rem;
  text-align: center;
  background: rgba(59, 66, 82, 0.4);
}
.fact__num {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  text-shadow: 0 0 18px rgba(136, 192, 208, 0.25);
}
.fact__sub { font-size: 1rem; color: var(--muted); }
.fact__label { display: block; color: var(--muted); font-size: 0.82rem; margin-top: 0.35rem; }

/* ---- domains ------------------------------------------------ */
.domains { list-style: none; display: flex; flex-direction: column; gap: 0.85rem; }
.domain {
  display: flex;
  gap: 1.1rem;
  align-items: flex-start;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  padding: 1.1rem 1.25rem;
  background: rgba(59, 66, 82, 0.35);
  transition: border-color 0.15s ease, background 0.15s ease;
}
.domain:hover { background: rgba(59, 66, 82, 0.7); border-left-color: var(--nord13); }
.domain__weight {
  flex: 0 0 auto;
  color: var(--nord13);
  font-weight: 700;
  font-size: 1.05rem;
  min-width: 3.2rem;
}
.domain__body h3 { color: var(--fg-bright); font-size: 1.02rem; margin-bottom: 0.3rem; }
.domain__body p { color: var(--fg); font-size: 0.92rem; margin-bottom: 0.5rem; }

/* ---- cards -------------------------------------------------- */
.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}
.card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  background: rgba(59, 66, 82, 0.35);
}
.card h3 { color: var(--accent-2); font-size: 0.98rem; margin-bottom: 0.4rem; }
.card p { color: var(--fg); font-size: 0.92rem; }

/* ============================================================
   CTA band
   ============================================================ */
.band {
  margin-top: 2.75rem;
  padding: 2.5rem clamp(1.25rem, 4vw, 2.5rem);
  border: 1px solid var(--accent);
  border-radius: 10px;
  background:
    linear-gradient(180deg, rgba(136, 192, 208, 0.08), rgba(94, 129, 172, 0.05));
  text-align: left;
}
.band h2 { color: var(--fg-bright); font-size: 1.6rem; margin: 0.25rem 0 0.4rem; }
.band__sub { color: var(--fg); margin-bottom: 1.5rem; }

/* ============================================================
   Footer
   ============================================================ */
.footer {
  margin-top: 2.5rem;
  padding-top: 1.75rem;
  border-top: 1px dashed var(--nord2);
  color: var(--muted);
  font-size: 0.85rem;
}
.footer p { margin-bottom: 0.5rem; }
.footer__links a { color: var(--accent); }
.footer .sep { color: var(--nord3); margin: 0 0.4rem; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 720px) {
  .facts { grid-template-columns: repeat(2, 1fr); }
  .cards { grid-template-columns: 1fr; }
  .term__title { display: none; }
  .term__body { padding: 1.75rem 1.25rem; }
}

@media (prefers-reduced-motion: reduce) {
  .cursor { animation: none; }
  html { scroll-behavior: auto; }
}