/* nudgeDSL shared design system — shared.css */
:root {
  --bg: #0a0c10;
  --bg2: #10131a;
  --bg3: #161b26;
  --border: rgba(255,255,255,0.07);
  --border2: rgba(255,255,255,0.12);
  --text: #e8e6df;
  --muted: #6b7280;
  --amber: #f59e0b;
  --amber2: #fbbf24;
  --amber-dim: rgba(245,158,11,0.12);
  --teal: #14b8a6;
  --teal-dim: rgba(20,184,166,0.1);
  --purple: #8b5cf6;
  --purple-dim: rgba(139,92,246,0.1);
  --green: #10b981;
  --green-dim: rgba(16,185,129,0.1);
  --red: #ef4444;
  --red-dim: rgba(239,68,68,0.1);
  --blue: #3b82f6;
  --mono: 'JetBrains Mono', monospace;
  --serif: 'DM Serif Display', serif;
  --sans: 'DM Sans', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg); color: var(--text);
  font-family: var(--sans); font-size: 16px; line-height: 1.7;
  overflow-x: hidden;
}

body::before {
  content: ''; position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  opacity: 0.4;
}

/* NAV */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 5%; height: 60px;
  background: rgba(10,12,16,0.9); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-logo { font-family: var(--mono); font-weight: 700; font-size: 1rem; text-decoration: none; color: var(--text); }
.nav-logo span { color: var(--amber); }
.nav-links { display: flex; gap: 1.8rem; align-items: center; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: 0.83rem; font-weight: 500; transition: color 0.2s; }
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-site-label { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); padding: 2px 8px; border: 1px solid var(--border); border-radius: 2px; }
.nav-cta { background: var(--amber); color: #000; border: none; padding: 0.4rem 1.1rem; border-radius: 4px; cursor: pointer; font-weight: 600; font-size: 0.82rem; font-family: var(--mono); transition: all 0.2s; text-decoration: none; }
.nav-cta:hover { background: var(--amber2); }

/* COMMON LAYOUT */
section { padding: 5rem 5%; position: relative; z-index: 1; }
.section-label { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--amber); margin-bottom: 1rem; display: flex; align-items: center; gap: 10px; }
.section-label::after { content: ''; width: 40px; height: 1px; background: var(--amber); opacity: 0.4; }
h1 { font-family: var(--serif); font-size: clamp(2.4rem, 5vw, 4rem); line-height: 1.08; letter-spacing: -0.5px; }
h2 { font-family: var(--serif); font-size: clamp(1.8rem, 3.5vw, 2.6rem); line-height: 1.15; letter-spacing: -0.3px; margin-bottom: 1rem; }
h3 { font-family: var(--serif); font-size: 1.3rem; line-height: 1.3; margin-bottom: 0.75rem; }
h4 { font-family: var(--mono); font-size: 0.82rem; letter-spacing: 0.05em; text-transform: uppercase; color: var(--muted); margin-bottom: 0.5rem; }
.lead { font-size: 1rem; color: var(--muted); max-width: 600px; margin-bottom: 3rem; line-height: 1.8; font-weight: 300; }

/* BUTTONS */
.btn-primary { background: var(--amber); color: #000; border: none; padding: 0.7rem 1.6rem; border-radius: 4px; cursor: pointer; font-weight: 600; font-size: 0.88rem; font-family: var(--mono); transition: all 0.2s; text-decoration: none; display: inline-flex; align-items: center; gap: 8px; }
.btn-primary:hover { background: var(--amber2); transform: translateY(-1px); }
.btn-secondary { background: transparent; color: var(--text); border: 1px solid var(--border2); padding: 0.7rem 1.6rem; border-radius: 4px; cursor: pointer; font-weight: 500; font-size: 0.88rem; font-family: var(--mono); transition: all 0.2s; text-decoration: none; display: inline-flex; align-items: center; gap: 8px; }
.btn-secondary:hover { border-color: var(--amber); color: var(--amber); }
.btn-sm { padding: 0.28rem 0.7rem; font-family: var(--mono); font-size: 0.7rem; border-radius: 3px; cursor: pointer; transition: all 0.15s; border: 1px solid var(--border2); background: transparent; color: var(--muted); }
.btn-sm:hover { border-color: var(--amber); color: var(--amber); }
.btn-sm.primary { background: var(--amber); color: #000; border-color: var(--amber); font-weight: 600; }
.btn-sm.primary:hover { background: var(--amber2); }

/* CARDS */
.card { background: var(--bg2); border: 1px solid var(--border); border-radius: 8px; padding: 1.8rem; }
.callout { padding: 1.2rem 1.6rem; border-left: 3px solid var(--amber); background: var(--amber-dim); border-radius: 0 6px 6px 0; }
.callout strong { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--amber); display: block; margin-bottom: 0.4rem; }
.callout p, .callout { font-size: 0.88rem; line-height: 1.7; color: var(--muted); }

/* CODE */
pre, code { font-family: var(--mono); }
.code-block { background: var(--bg); border: 1px solid var(--border); border-radius: 6px; overflow: hidden; }
.code-block-bar { padding: 0.5rem 1rem; background: var(--bg3); border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.code-block-label { font-family: var(--mono); font-size: 0.68rem; color: var(--muted); letter-spacing: 0.06em; }
.code-block pre { padding: 1rem 1.2rem; font-size: 0.8rem; line-height: 1.7; overflow-x: auto; white-space: pre-wrap; }
.t-atom { color: var(--amber); font-weight: 700; }
.t-op { color: var(--teal); font-weight: 500; }
.t-str { color: #a5d6a7; }
.t-num { color: #ce93d8; }
.t-comment { color: var(--muted); font-style: italic; }
.t-kw { color: #90caf9; }
code { font-size: 0.82em; background: var(--bg3); padding: 0.1rem 0.35rem; border-radius: 3px; color: var(--amber); }

/* EDITOR */
textarea.code-input { width: 100%; min-height: 200px; padding: 1rem 1.2rem; background: var(--bg); color: var(--text); border: none; outline: none; resize: vertical; font-family: var(--mono); font-size: 0.8rem; line-height: 1.7; caret-color: var(--amber); }
.output-pane { padding: 1rem 1.2rem; min-height: 200px; font-family: var(--mono); font-size: 0.76rem; line-height: 1.7; white-space: pre-wrap; word-break: break-all; }
.out-ok { color: var(--green); }
.out-err { color: var(--red); }
.out-info { color: var(--muted); }
.out-ast { color: var(--text); }

/* TABS */
.tabs { display: flex; border-bottom: 1px solid var(--border); margin-bottom: 1.5rem; }
.tab-btn { padding: 0.6rem 1.2rem; background: transparent; border: none; color: var(--muted); font-family: var(--mono); font-size: 0.76rem; cursor: pointer; transition: all 0.2s; border-bottom: 2px solid transparent; margin-bottom: -1px; letter-spacing: 0.04em; }
.tab-btn.active { color: var(--amber); border-bottom-color: var(--amber); }
.tab-btn:not(.active):hover { color: var(--text); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* EDITOR WRAP */
.editor-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; border: 1px solid var(--border); border-radius: 6px; overflow: hidden; }
.editor-pane { background: var(--bg); }
.editor-header { padding: 0.55rem 1rem; background: var(--bg3); border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.editor-title { font-family: var(--mono); font-size: 0.68rem; color: var(--muted); letter-spacing: 0.06em; }
.editor-actions { display: flex; gap: 6px; align-items: center; }

/* FOOTER */
footer { padding: 2.5rem 5%; border-top: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; font-family: var(--mono); font-size: 0.72rem; color: var(--muted); position: relative; z-index: 1; flex-wrap: wrap; gap: 1rem; }
footer a { color: var(--amber); text-decoration: none; }
footer a:hover { text-decoration: underline; }

/* BADGE */
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 0.25rem 0.7rem; border-radius: 2px; font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; }
.badge-amber { background: var(--amber-dim); border: 1px solid rgba(245,158,11,0.3); color: var(--amber); }
.badge-green { background: var(--green-dim); border: 1px solid rgba(16,185,129,0.3); color: var(--green); }
.badge-purple { background: var(--purple-dim); border: 1px solid rgba(139,92,246,0.3); color: var(--purple); }
.badge-teal { background: var(--teal-dim); border: 1px solid rgba(20,184,166,0.3); color: var(--teal); }
.badge-dot::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: currentColor; }

/* GRID HELPERS */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }

/* DIVIDER */
.divider { border: none; border-top: 1px solid var(--border); margin: 3rem 0; }

/* RESPONSIVE */
@media (max-width: 768px) {
  .grid-2, .grid-3, .editor-wrap { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  section { padding: 4rem 5%; }
}

@keyframes fadeUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.5} }