/* ============================================================
   romdev — 8-bit style. Press Start 2P for headings/chrome,
   VT323 for body copy (readable at length, still retro).
   ============================================================ */

:root {
  --bg:        #0b0b1f;
  --bg-2:      #12122e;
  --panel:     #1c1c40;
  --ink:       #f2f2ff;
  --ink-dim:   #c3c3e8;
  --pink:      #ff5277;
  --cyan:      #42e5c9;
  --yellow:    #ffd23f;
  --green:     #57e389;
  --purple:    #a06bff;
  --border:    #33335c;
  --shadow:    #000;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(circle at 20% -10%, rgba(160,107,255,0.15), transparent 45%),
    radial-gradient(circle at 90% 10%, rgba(66,229,201,0.12), transparent 40%),
    var(--bg);
  color: var(--ink);
  font-family: 'VT323', monospace;
  font-size: 25px;
  line-height: 1.55;
  letter-spacing: 0.4px;
  overflow-x: hidden;
}

/* pixel-font helper for chrome/headings */
.px, .hero-kicker, .brand, .site-nav a, .btn, .section-title,
.page-title, .tier-title, .sys-name, .card h3, .feat h3,
.cta-title, .terminal-title, .copy-btn, .pipe-node, .tier-badge,
.sys-diff, .tag-new, h1, h2, h3 {
  font-family: 'Press Start 2P', monospace;
  letter-spacing: 0;
  line-height: 1.5;
}

a { color: var(--cyan); text-decoration: none; }
a:hover { color: var(--yellow); }

strong { color: var(--yellow); font-weight: normal; }
em { color: var(--cyan); font-style: normal; }

.code {
  font-family: 'VT323', monospace;
  font-size: 0.92em;
  background: #000;
  color: var(--cyan);
  padding: 1px 8px;
  border: 1px solid var(--border);
  white-space: nowrap;
  letter-spacing: 0.5px;
}

/* CRT scanline overlay */
.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(0,0,0,0.14) 3px,
    rgba(0,0,0,0) 4px
  );
  mix-blend-mode: multiply;
}

.blink { animation: blink 1s steps(1) infinite; color: var(--cyan); }
@keyframes blink { 50% { opacity: 0; } }

/* ---------- header ---------- */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px clamp(16px, 5vw, 48px);
  border-bottom: 4px solid var(--border);
  background: rgba(11,11,31,0.85);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(3px);
  flex-wrap: wrap;
}
.brand { font-size: 18px; color: var(--pink); }
.brand-cursor { color: var(--cyan); margin-right: 2px; }
.brand-name { color: var(--ink); }
.site-nav { display: flex; gap: clamp(12px, 3vw, 28px); flex-wrap: wrap; }
.site-nav a { font-size: 11px; color: var(--ink-dim); }
.site-nav a:hover { color: var(--yellow); }

/* ---------- layout ---------- */
main { display: block; }
section { padding: clamp(40px, 7vw, 80px) clamp(16px, 5vw, 48px); }
.hero, .band, .cards-section, .cta-band, .page-head, .tier, .feat-list {
  max-width: 1080px;
  margin: 0 auto;
}

/* ---------- hero ---------- */
.hero { text-align: center; padding-top: clamp(48px, 8vw, 90px); }
.hero-kicker {
  font-family: 'Press Start 2P', monospace;
  font-size: 10px;
  color: var(--yellow);
  letter-spacing: 1px;
  margin: 0 0 22px;
}
.hero-title {
  font-size: clamp(20px, 5.5vw, 42px);
  color: var(--yellow);
  margin: 0 0 20px;
  text-shadow: 4px 4px 0 #000;
  line-height: 1.4;
}
.hero-sub {
  font-size: clamp(20px, 2.6vw, 26px);
  color: var(--ink);
  max-width: 720px;
  margin: 0 auto 34px;
}
.hero-note {
  color: var(--ink-dim);
  max-width: 680px;
  margin: 26px auto 0;
  font-size: 23px;
  line-height: 1.55;
}

/* ---------- terminal ---------- */
.terminal {
  position: relative;
  max-width: 640px;
  margin: 0 auto;
  background: #05050f;
  border: 3px solid var(--cyan);
  box-shadow: 0 0 0 3px #000, 8px 8px 0 rgba(66,229,201,0.25);
  text-align: left;
}
.terminal-sm { max-width: 480px; }
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--panel);
  border-bottom: 2px solid var(--border);
}
.dot { width: 12px; height: 12px; display: inline-block; }
.dot.red { background: var(--pink); }
.dot.yellow { background: var(--yellow); }
.dot.green { background: var(--green); }
.terminal-title {
  font-size: 8px;
  color: var(--ink-dim);
  margin-left: auto;
}
.terminal-body { padding: 22px 20px; }
.terminal-body p { margin: 0 0 10px; font-size: 24px; line-height: 1.5; }
.terminal-body p:last-child { margin-bottom: 0; }
.prompt { color: var(--green); }
.cmd { color: var(--cyan); font-weight: bold; }
.terminal-out { color: var(--green); }
.terminal-out.dim { color: var(--ink-dim); }
.hl { color: var(--yellow); }

.copy-btn {
  position: absolute;
  top: 10px; right: 10px;
  font-family: 'Press Start 2P', monospace;
  font-size: 8px;
  color: var(--bg);
  background: var(--cyan);
  border: none;
  padding: 7px 9px;
  cursor: pointer;
  box-shadow: 3px 3px 0 #000;
}
.terminal-sm .copy-btn { top: 50%; transform: translateY(-50%); }
.copy-btn:hover { background: var(--yellow); }
.copy-btn:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 #000; }
.terminal-sm .copy-btn:active { transform: translateY(-50%) translate(2px,2px); }
.copy-btn.copied { background: var(--green); }

/* ---------- buttons ---------- */
.hero-actions { margin-top: 38px; display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn {
  font-size: 11px;
  padding: 16px 22px;
  border: 3px solid;
  cursor: pointer;
  display: inline-block;
  transition: transform 0.05s;
}
.btn:active { transform: translate(2px, 2px); }
.btn-primary {
  background: var(--pink);
  color: var(--bg);
  border-color: var(--bg);
  box-shadow: 5px 5px 0 var(--purple);
}
.btn-primary:hover { background: var(--yellow); color: var(--bg); }
.btn-ghost {
  background: transparent;
  color: var(--cyan);
  border-color: var(--cyan);
  box-shadow: 5px 5px 0 rgba(66,229,201,0.25);
}
.btn-ghost:hover { background: var(--cyan); color: var(--bg); }

/* ---------- section titles ---------- */
.section-title, .tier-title {
  font-size: clamp(14px, 3vw, 20px);
  color: var(--cyan);
  text-align: center;
  margin: 0 0 40px;
  text-shadow: 3px 3px 0 #000;
}
.tier-title { text-align: left; display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.tier-badge {
  font-size: 13px;
  line-height: 1;
  background: var(--pink);
  color: var(--bg);
  padding: 9px 11px;
  letter-spacing: 1px;
  white-space: nowrap;
}
.tier-badge.alt { background: var(--purple); }
.tier-badge.fantasy { background: var(--green); }

/* ---------- how-it-works pipe ---------- */
.band { text-align: center; }
.pipe {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.pipe-node {
  font-size: 10px;
  background: var(--panel);
  border: 3px solid var(--border);
  padding: 16px 14px;
  box-shadow: 4px 4px 0 #000;
  color: var(--ink);
}
.pipe-node.accent { border-color: var(--pink); color: var(--pink); }
.pipe-node.win { border-color: var(--green); color: var(--green); }
.pipe-arrow { color: var(--yellow); font-size: 24px; }
.band-note { color: var(--ink-dim); max-width: 660px; margin: 0 auto; font-size: 23px; line-height: 1.55; }

/* ---------- two ways to connect ---------- */
.ways-section { max-width: 1080px; margin: 0 auto; text-align: center; }
.ways {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 22px;
  margin-bottom: 28px;
  text-align: left;
}
.ways-3 { grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); }
.way {
  background: var(--panel);
  border: 3px solid var(--border);
  padding: 24px 22px;
  box-shadow: 6px 6px 0 rgba(0,0,0,0.5);
}
.way:first-child { border-color: var(--purple); box-shadow: 6px 6px 0 rgba(160,107,255,0.22); }
.way-head { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.way-badge {
  font-family: 'Press Start 2P', monospace;
  font-size: 9px;
  padding: 6px 8px;
  color: var(--bg);
  box-shadow: 3px 3px 0 #000;
}
.way-badge.mcp { background: var(--purple); color: #fff; }
.way-badge.skill { background: var(--cyan); }
.way-badge.http { background: var(--green); }
.way h3 { font-family: 'Press Start 2P', monospace; font-size: 11px; color: var(--ink); margin: 0; line-height: 1.5; }
.way > p { color: var(--ink); font-size: 22px; line-height: 1.5; margin: 0 0 18px; }
.mini-term {
  background: #05050f;
  border: 2px solid var(--border);
  padding: 14px 14px;
  font-size: 20px;
}
.mini-term p { margin: 0 0 4px; color: var(--cyan); line-height: 1.4; }
.mini-term p:last-child { margin-bottom: 0; }
.mini-term .indent { padding-left: 22px; color: var(--ink-dim); }
.mini-term .mini-out { color: var(--green); }

/* ---------- feature cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 22px;
}
.card {
  background: var(--panel);
  border: 3px solid var(--border);
  padding: 24px 20px;
  box-shadow: 6px 6px 0 rgba(0,0,0,0.5);
  transition: transform 0.08s, border-color 0.08s;
}
.card:hover { transform: translateY(-4px); border-color: var(--cyan); }
.card-icon { font-size: 32px; margin-bottom: 12px; }
.card h3 { font-size: 12px; color: var(--yellow); margin: 0 0 12px; }
.card p { margin: 0; color: var(--ink); font-size: 23px; line-height: 1.5; }
.cards-cta { text-align: center; margin-top: 36px; font-size: 24px; }

/* ---------- cta band ---------- */
.cta-band {
  text-align: center;
  background: linear-gradient(180deg, transparent, rgba(160,107,255,0.08));
  border-top: 4px solid var(--border);
  border-bottom: 4px solid var(--border);
}
.cta-title { font-size: clamp(14px, 3.4vw, 22px); color: var(--yellow); margin: 0 0 26px; text-shadow: 3px 3px 0 #000; line-height: 1.5; }
.cta-note { color: var(--ink-dim); max-width: 640px; margin: 26px auto 0; font-size: 23px; line-height: 1.55; }

/* ---------- page heads (systems / features) ---------- */
.page-head { text-align: center; padding-top: clamp(48px, 8vw, 80px); }
.page-title { font-size: clamp(18px, 4.4vw, 32px); color: var(--yellow); margin: 0 0 20px; text-shadow: 4px 4px 0 #000; line-height: 1.4; }
.page-lead { color: var(--ink); max-width: 720px; margin: 0 auto; font-size: 25px; line-height: 1.55; }

/* ---------- systems grid ---------- */
.tier { padding-top: 24px; padding-bottom: 24px; }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 18px;
}
.grid-3 { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.sys-card {
  background: var(--panel);
  border: 3px solid var(--border);
  border-left-width: 8px;
  padding: 16px 16px 18px;
  box-shadow: 5px 5px 0 rgba(0,0,0,0.5);
  transition: transform 0.08s;
}
.sys-card:hover { transform: translate(-2px, -2px); box-shadow: 7px 7px 0 rgba(0,0,0,0.6); }
.sys-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.sys-year { color: var(--ink-dim); font-size: 20px; }
.sys-diff { font-size: 8px; padding: 5px 7px; color: var(--bg); background: var(--ink-dim); }
.sys-name { font-size: 11px; color: var(--ink); margin: 0 0 10px; line-height: 1.4; }
.sys-tool { color: var(--cyan); font-size: 21px; margin: 0 0 8px; }
.sys-desc { color: var(--ink); font-size: 21px; margin: 0; line-height: 1.45; }

/* difficulty accents */
.diff-easy    { border-left-color: var(--green); }
.diff-easy    .sys-diff { background: var(--green); }
.diff-easiest { border-left-color: var(--green); }
.diff-med     { border-left-color: var(--yellow); }
.diff-med     .sys-diff { background: var(--yellow); }
.diff-hard    { border-left-color: var(--pink); }
.diff-hard    .sys-diff { background: var(--pink); }
.diff-hardest { border-left-color: var(--purple); }
.diff-hardest .sys-diff { background: var(--purple); color: #fff; }
.tier-note { color: var(--ink-dim); margin-top: 22px; font-size: 22px; line-height: 1.5; }

/* ---------- features list ---------- */
.feat-list { display: flex; flex-direction: column; gap: 8px; }
.feat {
  display: flex;
  gap: 22px;
  align-items: flex-start;
  padding: 26px 22px;
  border: 3px solid var(--border);
  background: var(--panel);
  box-shadow: 5px 5px 0 rgba(0,0,0,0.4);
}
.feat.highlight { border-color: var(--cyan); box-shadow: 5px 5px 0 rgba(66,229,201,0.25); }
.feat-num {
  font-family: 'Press Start 2P', monospace;
  font-size: 20px;
  color: var(--purple);
  flex: 0 0 auto;
  opacity: 0.9;
}
.feat h3 { font-size: 13px; color: var(--yellow); margin: 0 0 14px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.feat p { margin: 0; color: var(--ink); font-size: 24px; line-height: 1.55; }
.tag-new {
  font-size: 8px;
  background: var(--green);
  color: var(--bg);
  padding: 4px 6px;
}

/* ---------- footer ---------- */
.site-footer {
  border-top: 4px solid var(--border);
  background: var(--bg-2);
  padding: 44px clamp(16px, 5vw, 48px) 28px;
}
.footer-grid {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
}
.footer-logo { font-family: 'Press Start 2P', monospace; font-size: 13px; color: var(--pink); }
.footer-note { color: var(--ink-dim); max-width: 440px; margin: 14px 0 0; font-size: 22px; line-height: 1.5; }
.footer-links { display: flex; flex-direction: column; gap: 10px; font-size: 23px; }
.footer-copy {
  max-width: 1080px;
  margin: 34px auto 0;
  text-align: center;
  color: var(--ink-dim);
  font-family: 'Press Start 2P', monospace;
  font-size: 8px;
  letter-spacing: 1px;
}

/* ---------- responsive ---------- */
@media (max-width: 640px) {
  body { font-size: 20px; }
  .feat { flex-direction: column; gap: 12px; }
  .pipe-arrow { transform: rotate(90deg); }
  .footer-grid { flex-direction: column; }
}

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