:root {
  --bg: #0a0f0d;
  --bg-soft: #0d1411;
  --panel: #0f1713;
  --panel-2: #121c17;
  --line: #1c2a23;
  --line-soft: #16211c;
  --text: #c6d3c9;
  --text-dim: #7e8f84;
  --text-faint: #4d5c52;
  --green: #4af626;
  --green-dim: #2ea61a;
  --cyan: #57d9b8;
  --amber: #f5c56b;
  --red: #ff5f6b;
  --accent: var(--green);
  --mono: "JetBrains Mono", "Fira Code", "SFMono-Regular", ui-monospace, Menlo, Consolas, monospace;
  --radius: 8px;
  --maxw: 1080px;
  --nav-h: 60px;
}

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

html {
  color-scheme: dark;
  scrollbar-color: var(--green-dim) var(--bg-soft);
}

body {
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(42, 166, 26, 0.06), transparent 60%),
    radial-gradient(900px 500px at 10% 110%, rgba(87, 217, 184, 0.05), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* subtle CRT scanlines — barely there, toggleable via body.no-crt */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 2px,
    rgba(0, 0, 0, 0.06) 2px,
    rgba(0, 0, 0, 0.06) 4px
  );
  opacity: 0.5;
}
body.no-crt::after {
  display: none;
}

::selection {
  background: rgba(74, 246, 38, 0.22);
  color: #eaffdd;
}

a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}
a:hover {
  color: var(--green);
  border-bottom-color: var(--green-dim);
}

:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
  border-radius: 2px;
}

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

/* ---------- nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 0 clamp(16px, 4vw, 40px);
  background: rgba(10, 15, 13, 0.82);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  letter-spacing: 0.02em;
  border: none;
}
.nav-brand:hover {
  color: var(--green);
  border: none;
}
.nav-brand .prompt {
  color: var(--accent);
}
.nav-brand .prompt .path {
  color: var(--cyan);
}
.nav-brand .blink {
  animation: blink 1.1s steps(2) infinite;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}
.nav-links a {
  display: block;
  padding: 6px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  color: var(--text-dim);
  font-size: 13px;
}
.nav-links a:hover {
  color: var(--green);
  border-color: var(--line);
  background: var(--panel);
}
.nav-links a.active {
  color: var(--accent);
  border-color: var(--line);
  background: var(--panel);
}
.nav-links a.active::before {
  content: "▸ ";
}

/* ---------- layout ---------- */

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 40px);
  flex: 1;
}

.section {
  padding: 48px 0;
}

.page-head {
  padding: 40px 0 24px;
  border-bottom: 1px solid var(--line-soft);
  margin-bottom: 40px;
}

.kicker {
  color: var(--green-dim);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  margin-bottom: 10px;
}
.kicker::before {
  content: "## ";
  color: var(--text-faint);
}

h1,
h2,
h3 {
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  color: #dce8df;
}
h1 .accent {
  color: var(--accent);
}

h2 {
  font-size: clamp(1.3rem, 3vw, 1.7rem);
  color: #dce8df;
  margin-bottom: 12px;
}
h2 .sym {
  color: var(--text-faint);
}
h2::after {
  content: " {";
  color: var(--green-dim);
}
h2::before {
  content: "} ";
  color: var(--text-faint);
}

p {
  margin-bottom: 16px;
}

.muted {
  color: var(--text-dim);
}

/* ---------- shared bits ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid var(--green-dim);
  border-radius: var(--radius);
  background: transparent;
  color: var(--green);
  font-family: var(--mono);
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover {
  background: rgba(74, 246, 38, 0.1);
  color: #b8ff9e;
  box-shadow: 0 0 0 3px rgba(74, 246, 38, 0.12);
  border-color: var(--green);
  border-bottom-color: var(--green);
}
.btn.ghost {
  border-color: var(--line);
  color: var(--text-dim);
}
.btn.ghost:hover {
  color: var(--text);
  border-color: var(--line);
  background: var(--panel);
  box-shadow: none;
}

.tag {
  display: inline-block;
  padding: 2px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 11px;
  color: var(--text-dim);
  background: var(--panel);
  white-space: nowrap;
}
.tag.hl {
  color: var(--green);
  border-color: var(--green-dim);
}

.grid {
  display: grid;
  gap: 16px;
}

/* terminal window frame */
.window {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
}
.window-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--panel-2);
  border-bottom: 1px solid var(--line-soft);
}
.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot.r { background: #ff5f6b; }
.dot.y { background: var(--amber); }
.dot.g { background: var(--green); }
.window-title {
  margin-left: 8px;
  font-size: 12px;
  color: var(--text-faint);
}

/* blinking cursor */
@keyframes blink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}
.blink {
  display: inline-block;
  animation: blink 1.1s steps(2) infinite;
}

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

/* ---------- footer ---------- */

.footer {
  margin-top: 64px;
  border-top: 1px solid var(--line-soft);
  padding: 28px clamp(16px, 4vw, 40px);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 12px;
  color: var(--text-faint);
}
.footer .fish {
  color: var(--green-dim);
}
.footer a {
  color: var(--text-dim);
  margin-left: 14px;
}

/* ---------- responsive ---------- */

@media (max-width: 680px) {
  .nav {
    padding: 0 16px;
  }
  .nav-links a {
    padding: 6px 8px;
    font-size: 12px;
  }
  .section {
    padding: 32px 0;
  }
}