/* ============================================================
   schlamm.dev — shared stylesheet
   Copper brand · magenta pop (dark) · ink-blue pop (light)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

/* ---------- Theme tokens ---------- */
:root {
  /* Dark mode — Copper & Magenta (default) */
  --bg:          #191014;
  --bg-2:        #1F151A;
  --surface:     #2B1B20;
  --surface-2:   #34222A;
  --border:      rgba(224,137,79,0.16);
  --border-2:    rgba(224,137,79,0.30);
  --text:        #F1E4DC;
  --text-dim:    #C7B2A6;
  --text-faint:  #8C7568;
  --accent:      #E68C4D;   /* copper */
  --accent-2:    #F4A768;   /* copper bright */
  --pop:         #FF4D9D;   /* magenta */
  --pop-2:       #FF7DB8;
  --glow-accent: rgba(230,140,77,0.45);
  --glow-pop:    rgba(255,77,157,0.40);
  --grid-line:   rgba(224,137,79,0.06);
  --shadow:      0 24px 60px -20px rgba(0,0,0,0.7);
  --code-bg:     rgba(255,255,255,0.04);
  color-scheme: dark;
}

[data-theme="light"] {
  /* Light mode — Clay & Ink */
  --bg:          #ECE0CF;
  --bg-2:        #F3EADD;
  --surface:     #F5EEE1;
  --surface-2:   #E4D4BC;
  --border:      rgba(36,22,8,0.14);
  --border-2:    rgba(36,22,8,0.26);
  --text:        #241608;
  --text-dim:    #5F4A33;
  --text-faint:  #93795A;
  --accent:      #B85C2E;   /* rust copper */
  --accent-2:    #9E4B21;
  --pop:         #2F5FD0;   /* ink blue */
  --pop-2:       #1F49AE;
  --glow-accent: rgba(184,92,46,0.30);
  --glow-pop:    rgba(47,95,208,0.28);
  --grid-line:   rgba(36,22,8,0.05);
  --shadow:      0 24px 50px -24px rgba(74,45,20,0.35);
  --code-bg:     rgba(36,22,8,0.05);
  color-scheme: light;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background 0.5s ease, color 0.5s ease;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
::selection { background: var(--pop); color: #fff; }

/* Animated background layer */
.bg-fx {
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background:
    radial-gradient(600px circle at 15% 10%, var(--glow-accent), transparent 45%),
    radial-gradient(700px circle at 85% 20%, var(--glow-pop), transparent 45%),
    radial-gradient(600px circle at 50% 100%, var(--glow-accent), transparent 50%);
  opacity: 0.55;
  animation: drift 22s ease-in-out infinite alternate;
}
.bg-grid {
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at 50% 0%, #000 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(circle at 50% 0%, #000 0%, transparent 75%);
}
@keyframes drift {
  0%   { transform: translate3d(0,0,0) scale(1); }
  100% { transform: translate3d(-3%,2%,0) scale(1.08); }
}

/* Cursor spotlight */
.spotlight {
  position: fixed; width: 460px; height: 460px; z-index: -1; pointer-events: none;
  border-radius: 50%; left: 0; top: 0; transform: translate(-50%,-50%);
  background: radial-gradient(circle, var(--glow-accent), transparent 65%);
  opacity: 0; transition: opacity 0.4s ease; mix-blend-mode: screen;
}

/* ---------- Layout ---------- */
.container { width: min(1160px, 92vw); margin-inline: auto; }
.narrow { width: min(820px, 92vw); margin-inline: auto; }
section { padding: clamp(4rem, 9vw, 8rem) 0; position: relative; }
.eyebrow {
  font-family: 'JetBrains Mono', monospace; font-size: 0.72rem; letter-spacing: 0.28em;
  text-transform: uppercase; color: var(--accent);
  display: inline-flex; align-items: center; gap: 0.6em;
}
.eyebrow::before { content: ''; width: 26px; height: 1px; background: var(--accent); display: inline-block; }

/* ---------- Typography ---------- */
h1, h2, h3, h4 { font-family: 'Space Grotesk', sans-serif; font-weight: 600; line-height: 1.08; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.6rem, 7vw, 5.2rem); }
h2 { font-size: clamp(2rem, 4.5vw, 3.3rem); }
h3 { font-size: clamp(1.3rem, 2.4vw, 1.7rem); }
.lead { font-size: clamp(1.05rem, 2vw, 1.3rem); color: var(--text-dim); max-width: 60ch; }
.gradient-text {
  background: linear-gradient(100deg, var(--accent) 0%, var(--pop) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.mono { font-family: 'JetBrains Mono', monospace; }

/* ---------- Navigation ---------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, background 0.3s ease;
}
.nav.scrolled { border-bottom-color: var(--border); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 0.65rem; font-family: 'Space Grotesk'; font-weight: 700; font-size: 1.15rem; letter-spacing: -0.02em; }
.brand .logo { width: 30px; height: 30px; flex-shrink: 0; }
.brand .dot { color: var(--pop); }
.nav-links { display: flex; align-items: center; gap: 2rem; }
.nav-links a { font-size: 0.93rem; color: var(--text-dim); position: relative; transition: color 0.2s; }
.nav-links a::after {
  content: ''; position: absolute; left: 0; bottom: -6px; height: 2px; width: 0;
  background: linear-gradient(90deg, var(--accent), var(--pop)); transition: width 0.25s ease;
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { width: 100%; }
.nav-actions { display: flex; align-items: center; gap: 0.9rem; }

.theme-toggle {
  width: 42px; height: 42px; border-radius: 50%; border: 1px solid var(--border);
  display: grid; place-items: center; color: var(--text-dim);
  transition: transform 0.4s cubic-bezier(.34,1.56,.64,1), color 0.2s, border-color 0.2s;
}
.theme-toggle:hover { color: var(--accent); border-color: var(--border-2); transform: rotate(35deg); }
.theme-toggle svg { width: 19px; height: 19px; }
.theme-toggle .icon-sun { display: none; }
[data-theme="light"] .theme-toggle .icon-sun { display: block; }
[data-theme="light"] .theme-toggle .icon-moon { display: none; }

.nav-toggle { display: none; width: 42px; height: 42px; border-radius: 10px; border: 1px solid var(--border); position: relative; z-index: 101; }
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--text); margin: 3px auto; transition: transform 0.3s ease, opacity 0.2s ease; }
.nav-toggle.open { border-color: var(--border-2); }
.nav-toggle.open span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.55rem;
  padding: 0.85rem 1.5rem; border-radius: 12px; font-weight: 600; font-size: 0.95rem;
  position: relative; overflow: hidden; transition: transform 0.25s ease, box-shadow 0.3s ease;
  will-change: transform;
}
.btn svg { width: 17px; height: 17px; }
.btn-primary { background: linear-gradient(100deg, var(--accent), var(--accent-2)); color: #1a0f08; box-shadow: 0 10px 30px -10px var(--glow-accent); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 18px 40px -12px var(--glow-accent); }
.btn-ghost { border: 1px solid var(--border-2); color: var(--text); background: color-mix(in srgb, var(--surface) 40%, transparent); }
.btn-ghost:hover { transform: translateY(-3px); border-color: var(--accent); color: var(--accent); }
.btn-pop { background: linear-gradient(100deg, var(--pop), var(--pop-2)); color: #fff; box-shadow: 0 10px 30px -10px var(--glow-pop); }
.btn-pop:hover { transform: translateY(-3px); box-shadow: 0 18px 40px -12px var(--glow-pop); }
.btn .shine { position: absolute; inset: 0; background: linear-gradient(110deg, transparent 30%, rgba(255,255,255,0.35) 50%, transparent 70%); transform: translateX(-120%); }
.btn:hover .shine { transform: translateX(120%); transition: transform 0.7s ease; }

/* ---------- Hero ---------- */
.hero { padding-top: clamp(3rem, 7vw, 6rem); padding-bottom: clamp(4rem, 8vw, 7rem); position: relative; }
#hero-canvas { position: absolute; inset: 0; z-index: 0; opacity: 0.7; }
.hero-inner { position: relative; z-index: 2; text-align: center; }
.hero h1 { margin: 1.4rem 0; }
.hero .lead { margin: 0 auto 2.4rem; text-align: center; }
.hero-cta { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.badge {
  display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.4rem 0.9rem;
  border: 1px solid var(--border); border-radius: 100px; font-size: 0.8rem; color: var(--text-dim);
  background: color-mix(in srgb, var(--surface) 50%, transparent); font-family: 'JetBrains Mono', monospace;
}
.badge .pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--pop); box-shadow: 0 0 0 0 var(--glow-pop); animation: pulse 2s infinite; }
@keyframes pulse { 0%{box-shadow:0 0 0 0 var(--glow-pop);} 70%{box-shadow:0 0 0 10px transparent;} 100%{box-shadow:0 0 0 0 transparent;} }

/* Hero stats */
.hero-stats { display: flex; gap: clamp(1.5rem,5vw,4rem); justify-content: center; flex-wrap: wrap; margin-top: 3.5rem; }
.stat { text-align: center; }
.stat .num { font-family: 'Space Grotesk'; font-weight: 700; font-size: clamp(1.8rem,3.5vw,2.6rem); }
.stat .lbl { font-size: 0.8rem; color: var(--text-faint); font-family: 'JetBrains Mono', monospace; letter-spacing: 0.1em; text-transform: uppercase; }

/* ---------- Marquee ---------- */
.marquee { overflow: hidden; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 1.4rem 0; -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.marquee-track { display: flex; gap: 3.5rem; width: max-content; animation: scroll 32s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span { font-family: 'Space Grotesk'; font-weight: 500; font-size: 1.1rem; color: var(--text-faint); display: inline-flex; align-items: center; gap: 3.5rem; white-space: nowrap; }
.marquee-track span::before { content: '◆'; color: var(--accent); font-size: 0.7rem; }
@keyframes scroll { to { transform: translateX(-50%); } }

/* ---------- Cards / grid ---------- */
.section-head { max-width: 640px; margin-bottom: 3.5rem; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head h2 { margin: 1rem 0 1rem; }

.grid { display: grid; gap: 1.4rem; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: color-mix(in srgb, var(--surface) 60%, transparent);
  border: 1px solid var(--border); border-radius: 18px; padding: 1.8rem;
  position: relative; overflow: hidden; transition: transform 0.35s ease, border-color 0.35s ease;
}
.card::before {
  content: ''; position: absolute; inset: 0; opacity: 0; transition: opacity 0.4s ease;
  background: radial-gradient(400px circle at var(--mx,50%) var(--my,0%), var(--glow-accent), transparent 60%);
}
.card:hover { transform: translateY(-6px); border-color: var(--border-2); }
.card:hover::before { opacity: 0.5; }
.card .card-body { position: relative; z-index: 1; }
.card .icon-box {
  width: 50px; height: 50px; border-radius: 13px; display: grid; place-items: center;
  background: linear-gradient(135deg, color-mix(in srgb,var(--accent) 22%, transparent), color-mix(in srgb,var(--pop) 18%, transparent));
  border: 1px solid var(--border-2); margin-bottom: 1.3rem; color: var(--accent);
}
.card .icon-box svg { width: 24px; height: 24px; }
.card h3 { margin-bottom: 0.6rem; }
.card p { color: var(--text-dim); font-size: 0.97rem; }
.card .tag { font-family: 'JetBrains Mono', monospace; font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.15em; color: var(--pop); }

/* App portfolio card */
.app-card { display: flex; flex-direction: column; gap: 1rem; }
.app-card .app-top { display: flex; align-items: center; justify-content: space-between; }
.app-chip { width: 54px; height: 54px; border-radius: 15px; display: grid; place-items: center; font-family: 'Space Grotesk'; font-weight: 700; font-size: 1.4rem; color: #1a0f08; }
.status { font-family: 'JetBrains Mono', monospace; font-size: 0.68rem; padding: 0.25rem 0.6rem; border-radius: 100px; border: 1px solid var(--border-2); color: var(--text-dim); }
.status.live { color: var(--accent); border-color: var(--border-2); }
.status.soon { color: var(--pop); }

/* Feature split */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem,5vw,4.5rem); align-items: center; }
.feature-list { list-style: none; padding: 0; display: grid; gap: 1.3rem; }
.feature-list li { display: flex; gap: 1rem; }
.feature-list .fi { width: 40px; height: 40px; border-radius: 11px; flex-shrink: 0; display: grid; place-items: center; background: var(--code-bg); border: 1px solid var(--border); color: var(--pop); }
.feature-list .fi svg { width: 20px; height: 20px; }
.feature-list h4 { font-family: 'Space Grotesk'; font-size: 1.05rem; margin-bottom: 0.2rem; }
.feature-list p { color: var(--text-dim); font-size: 0.95rem; }

/* Visual terminal panel */
.panel {
  background: var(--bg-2); border: 1px solid var(--border); border-radius: 18px; overflow: hidden;
  box-shadow: var(--shadow);
}
.panel-bar { display: flex; align-items: center; gap: 0.5rem; padding: 0.9rem 1.1rem; border-bottom: 1px solid var(--border); }
.panel-bar .d { width: 11px; height: 11px; border-radius: 50%; background: var(--surface-2); }
.panel-bar .d:nth-child(1){ background: var(--accent); }
.panel-bar .d:nth-child(2){ background: var(--accent-2); }
.panel-bar .d:nth-child(3){ background: var(--pop); }
.panel-bar .title { margin-left: auto; font-family: 'JetBrains Mono', monospace; font-size: 0.75rem; color: var(--text-faint); }
.panel-body { padding: 1.4rem; font-family: 'JetBrains Mono', monospace; font-size: 0.85rem; line-height: 2; }
.panel-body .ln { display: block; color: var(--text-dim); }
.panel-body .k { color: var(--pop); }
.panel-body .v { color: var(--accent); }
.panel-body .c { color: var(--text-faint); }
.cursor-blink::after { content: '▋'; color: var(--accent); animation: blink 1.1s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* CTA band */
.cta-band { text-align: center; border: 1px solid var(--border); border-radius: 26px; padding: clamp(2.5rem,6vw,5rem); position: relative; overflow: hidden; background: color-mix(in srgb, var(--surface) 40%, transparent); }
.cta-band::before { content:''; position:absolute; inset:0; background: radial-gradient(500px circle at 50% -10%, var(--glow-pop), transparent 60%); opacity: 0.6; }
.cta-band > * { position: relative; z-index: 1; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--border); padding: 4rem 0 2.5rem; margin-top: 3rem; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2.5rem; margin-bottom: 3rem; }
.footer h5 { font-family: 'JetBrains Mono', monospace; font-size: 0.72rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-faint); margin-bottom: 1.2rem; }
.footer-links { list-style: none; padding: 0; display: grid; gap: 0.7rem; }
.footer-links a { color: var(--text-dim); font-size: 0.92rem; transition: color 0.2s; }
.footer-links a:hover { color: var(--accent); }
.footer .brand { margin-bottom: 1rem; }
.footer .blurb { color: var(--text-dim); font-size: 0.92rem; max-width: 34ch; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; padding-top: 2rem; border-top: 1px solid var(--border); flex-wrap: wrap; gap: 1rem; }
.footer-bottom p { font-size: 0.85rem; color: var(--text-faint); }
.footer-bottom .mono { font-size: 0.8rem; }

/* ---------- Forms (contact) ---------- */
.form-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem,5vw,4rem); align-items: start; }
.field { margin-bottom: 1.3rem; }
.field label { display: block; font-size: 0.82rem; font-weight: 500; margin-bottom: 0.5rem; color: var(--text-dim); font-family: 'JetBrains Mono', monospace; letter-spacing: 0.05em; }
.field input, .field select, .field textarea {
  width: 100%; padding: 0.85rem 1rem; border-radius: 12px; background: var(--code-bg);
  border: 1px solid var(--border); color: var(--text); font-family: inherit; font-size: 0.95rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.field textarea { resize: vertical; min-height: 140px; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--glow-accent); }
.field input::placeholder, .field textarea::placeholder { color: var(--text-faint); }
.contact-side { display: grid; gap: 1rem; }
.contact-item { display: flex; gap: 1rem; padding: 1.3rem; border: 1px solid var(--border); border-radius: 16px; background: color-mix(in srgb, var(--surface) 40%, transparent); transition: border-color 0.3s, transform 0.3s; }
.contact-item:hover { border-color: var(--border-2); transform: translateX(4px); }
.contact-item .ci-icon { width: 44px; height: 44px; border-radius: 12px; flex-shrink: 0; display: grid; place-items: center; background: var(--code-bg); color: var(--accent); border: 1px solid var(--border); }
.contact-item h4 { font-family: 'Space Grotesk'; font-size: 1rem; margin-bottom: 0.15rem; }
.contact-item a, .contact-item p { color: var(--text-dim); font-size: 0.9rem; }
.contact-item a:hover { color: var(--accent); }
.form-note { font-size: 0.8rem; color: var(--text-faint); margin-top: 0.5rem; }
.form-status { margin-top: 1rem; font-size: 0.9rem; display: none; padding: 0.9rem 1.1rem; border-radius: 12px; }
.form-status.ok { display: block; background: color-mix(in srgb, var(--accent) 15%, transparent); border: 1px solid var(--border-2); color: var(--accent); }

/* FAQ */
.faq { display: grid; gap: 0.8rem; max-width: 780px; margin-inline: auto; }
.faq-item { border: 1px solid var(--border); border-radius: 14px; overflow: hidden; background: color-mix(in srgb, var(--surface) 35%, transparent); }
.faq-q { width: 100%; text-align: left; padding: 1.2rem 1.4rem; display: flex; justify-content: space-between; align-items: center; gap: 1rem; font-family: 'Space Grotesk'; font-weight: 500; font-size: 1.02rem; }
.faq-q .chev { transition: transform 0.3s ease; color: var(--accent); flex-shrink: 0; }
.faq-item.open .chev { transform: rotate(180deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.faq-a p { padding: 0 1.4rem 1.3rem; color: var(--text-dim); font-size: 0.95rem; }

/* ---------- Legal / doc pages ---------- */
.doc-hero { padding: clamp(3rem,7vw,5rem) 0 2rem; border-bottom: 1px solid var(--border); }
.doc-hero h1 { font-size: clamp(2.2rem,5vw,3.6rem); margin: 1rem 0 0.8rem; }
.doc-hero .updated { font-family: 'JetBrains Mono', monospace; font-size: 0.82rem; color: var(--text-faint); }
.doc-layout { display: grid; grid-template-columns: 240px 1fr; gap: 3.5rem; padding-top: 3rem; align-items: start; }
.toc { position: sticky; top: 96px; }
.toc h5 { font-family: 'JetBrains Mono', monospace; font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-faint); margin-bottom: 1rem; }
.toc ol { list-style: none; padding: 0; counter-reset: toc; display: grid; gap: 0.15rem; max-height: 70vh; overflow-y: auto; }
.toc li a { display: block; padding: 0.4rem 0.7rem; border-radius: 8px; font-size: 0.85rem; color: var(--text-dim); border-left: 2px solid transparent; transition: 0.2s; counter-increment: toc; }
.toc li a::before { content: counter(toc, decimal-leading-zero) '  '; font-family: 'JetBrains Mono', monospace; font-size: 0.72rem; color: var(--text-faint); }
.toc li a:hover, .toc li a.active { color: var(--accent); border-left-color: var(--accent); background: var(--code-bg); }
.doc-body { max-width: 760px; }
.doc-body h2 { font-size: clamp(1.4rem,3vw,1.9rem); margin: 3rem 0 1rem; scroll-margin-top: 96px; display: flex; align-items: baseline; gap: 0.8rem; }
.doc-body h2 .n { font-family: 'JetBrains Mono', monospace; font-size: 0.9rem; color: var(--accent); font-weight: 400; }
.doc-body h2:first-child { margin-top: 0; }
.doc-body h3 { font-size: 1.12rem; margin: 1.8rem 0 0.7rem; color: var(--text); }
.doc-body p, .doc-body li { color: var(--text-dim); font-size: 1rem; line-height: 1.8; }
.doc-body p { margin-bottom: 1rem; }
.doc-body ul, .doc-body ol { margin: 0 0 1.2rem; padding-left: 1.3rem; display: grid; gap: 0.5rem; }
.doc-body strong { color: var(--text); font-weight: 600; }
.doc-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.doc-body .callout { border: 1px solid var(--border-2); border-left: 3px solid var(--accent); border-radius: 12px; padding: 1.2rem 1.4rem; margin: 1.5rem 0; background: var(--code-bg); }
.doc-body .callout p { margin: 0; font-size: 0.93rem; }
.doc-body .callout strong { color: var(--accent); }
.doc-progress { position: fixed; top: 0; left: 0; height: 3px; width: 0; z-index: 200; background: linear-gradient(90deg, var(--accent), var(--pop)); transition: width 0.1s; }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s cubic-bezier(.2,.7,.2,1), transform 0.7s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: 0.08s; }
.reveal.d2 { transition-delay: 0.16s; }
.reveal.d3 { transition-delay: 0.24s; }
.reveal.d4 { transition-delay: 0.32s; }

/* ---------- Mobile nav panel ---------- */
.mobile-menu { position: fixed; inset: 0; z-index: 99; background: color-mix(in srgb, var(--bg) 96%, transparent); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); padding: 6.5rem 2rem 2rem; transform: translateX(100%); transition: transform 0.4s cubic-bezier(.4,0,.2,1); display: flex; flex-direction: column; gap: 0.4rem; }
.mobile-menu.open { transform: none; }
.mobile-menu a { font-family: 'Space Grotesk'; font-size: 1.7rem; font-weight: 500; color: var(--text); padding: 0.6rem 0; border-bottom: 1px solid var(--border); opacity: 0; transform: translateX(24px); transition: opacity 0.4s ease, transform 0.4s ease, color 0.2s; }
.mobile-menu a:hover { color: var(--accent); }
.mobile-menu.open a { opacity: 1; transform: none; }
.mobile-menu.open a:nth-child(1) { transition-delay: 0.06s; }
.mobile-menu.open a:nth-child(2) { transition-delay: 0.11s; }
.mobile-menu.open a:nth-child(3) { transition-delay: 0.16s; }
.mobile-menu.open a:nth-child(4) { transition-delay: 0.21s; }
.mobile-menu.open a:nth-child(5) { transition-delay: 0.26s; }
.mobile-menu.open a:nth-child(6) { transition-delay: 0.31s; }
.mobile-menu .mm-mail { font-family: 'JetBrains Mono', monospace; font-size: 0.95rem; color: var(--accent); border-bottom: none; margin-top: 1.4rem; }
body.no-scroll { overflow: hidden; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .split, .form-wrap { grid-template-columns: 1fr; }
  .doc-layout { grid-template-columns: 1fr; }
  .toc { position: relative; top: 0; display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-actions .btn-primary { display: none; }
  .nav-actions { gap: 0.6rem; }
  .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .hero-stats { gap: 2rem; }
  .form-wrap { gap: 2rem; }
  section { padding: clamp(3rem, 8vw, 5rem) 0; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}