/* DevNodo — Landing */
:root {
  /* brand */
  --teal-500: #14b8b8;
  --teal-400: #2ed1d1;
  --teal-300: #6fe6e6;
  --teal-900: #0a4a4a;
  --orange-500: #f5a623;
  --orange-400: #ffb949;

  /* dark (default) */
  --bg-0: #050c1a;
  --bg-1: #08152a;
  --bg-2: #0c1d38;
  --bg-3: #122747;
  --bg-soft: rgba(255,255,255,0.03);
  --bg-softer: rgba(255,255,255,0.02);
  --bg-card: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
  --bg-nav: rgba(8,21,42,0.72);
  --bg-input: rgba(255,255,255,0.04);
  --bg-terminal: #04121f;
  --bg-mobile-menu: rgba(5,12,26,0.97);

  --ink-strong: #e7eef8;
  --ink: #e7eef8;
  --ink-soft: #b8c5d6;
  --ink-mute: #6c7c92;
  --line: rgba(255,255,255,0.08);
  --line-strong: rgba(255,255,255,0.16);

  --grad-hero: radial-gradient(ellipse at 20% -10%, rgba(20,184,184,0.18), transparent 55%),
               radial-gradient(ellipse at 85% 10%, rgba(245,166,35,0.10), transparent 50%),
               linear-gradient(180deg, var(--bg-1) 0%, var(--bg-0) 100%);
  --grad-cta: radial-gradient(circle at 80% 20%, rgba(20,184,184,0.3), transparent 50%),
              radial-gradient(circle at 20% 80%, rgba(245,166,35,0.18), transparent 50%),
              linear-gradient(135deg, var(--bg-2), var(--bg-0));
  --grad-about: radial-gradient(circle at 30% 20%, rgba(20,184,184,0.22), transparent 50%),
                radial-gradient(circle at 70% 80%, rgba(245,166,35,0.16), transparent 50%),
                linear-gradient(135deg, var(--bg-2), var(--bg-0));

  --grid-line: rgba(255,255,255,0.025);
  --grid-line-strong: rgba(255,255,255,0.04);

  --node-color: rgba(111,230,230,0.5);
  --node-accent: rgba(245,166,35,0.7);
  --node-line: rgba(46,209,209,0.18);

  --shadow-card: 0 30px 80px -30px rgba(0,0,0,0.6);
  --shadow-glow-teal: 0 8px 30px -8px rgba(20,184,184,0.6);

  --on-primary: #04121f;
}

[data-theme="light"] {
  --bg-0: #f0eee8;
  --bg-1: #f6f4ef;
  --bg-2: #ffffff;
  --bg-3: #eeece5;
  --bg-soft: rgba(8,21,42,0.025);
  --bg-softer: rgba(8,21,42,0.015);
  --bg-card: linear-gradient(180deg, #ffffff, #fbfaf6);
  --bg-nav: rgba(246,244,239,0.78);
  --bg-input: #ffffff;
  --bg-terminal: #08152a;
  --bg-mobile-menu: rgba(246,244,239,0.97);

  --ink-strong: #08152a;
  --ink: #1a2540;
  --ink-soft: #4a5872;
  --ink-mute: #8090a8;
  --line: rgba(8,21,42,0.08);
  --line-strong: rgba(8,21,42,0.16);

  --grad-hero: radial-gradient(ellipse at 20% -10%, rgba(20,184,184,0.18), transparent 55%),
               radial-gradient(ellipse at 85% 10%, rgba(245,166,35,0.14), transparent 50%),
               linear-gradient(180deg, var(--bg-1) 0%, #ecead4 100%);
  --grad-cta: radial-gradient(circle at 80% 20%, rgba(20,184,184,0.22), transparent 50%),
              radial-gradient(circle at 20% 80%, rgba(245,166,35,0.18), transparent 50%),
              linear-gradient(135deg, #ffffff, #f0eee8);
  --grad-about: radial-gradient(circle at 30% 20%, rgba(20,184,184,0.18), transparent 50%),
                radial-gradient(circle at 70% 80%, rgba(245,166,35,0.18), transparent 50%),
                linear-gradient(135deg, #ffffff, #ecead4);

  --grid-line: rgba(8,21,42,0.04);
  --grid-line-strong: rgba(8,21,42,0.07);

  --node-color: rgba(20,184,184,0.55);
  --node-accent: rgba(245,166,35,0.85);
  --node-line: rgba(20,184,184,0.22);

  --shadow-card: 0 30px 80px -30px rgba(8,21,42,0.18);
  --shadow-glow-teal: 0 8px 30px -8px rgba(20,184,184,0.5);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-1);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: background-color .4s ease, color .4s ease;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.display { font-family: 'Space Grotesk', 'Inter', sans-serif; letter-spacing: -0.02em; }
.mono { font-family: 'JetBrains Mono', 'Fira Code', monospace; }

/* layout helpers */
.container { width: min(1240px, calc(100% - 48px)); margin-inline: auto; }
@media (max-width: 720px) { .container { width: calc(100% - 32px); } }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--teal-400);
  padding: 6px 12px;
  border: 1px solid rgba(20,184,184,0.35);
  border-radius: 999px;
  background: rgba(20,184,184,0.06);
}
.eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--teal-400); box-shadow: 0 0 12px var(--teal-400); animation: pulse 2.4s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity: 1; transform: scale(1);} 50% { opacity: 0.4; transform: scale(0.8);} }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .9s cubic-bezier(.2,.7,.2,1), transform .9s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; }
.reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; }
.reveal.d4 { transition-delay: .32s; }

/* NAV */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  padding: 14px 0;
  transition: background .4s, backdrop-filter .4s, border-color .4s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: var(--bg-nav);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { width: 36px; height: 36px; object-fit: contain; }
.brand-name { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 18px; letter-spacing: -0.01em; color: var(--ink-strong); }
.brand-name .accent { color: var(--teal-400); }
.nav-links { display: flex; gap: 30px; }
.nav-links a { font-size: 14px; color: var(--ink-soft); transition: color .2s; }
.nav-links a:hover { color: #fff; }
@media (max-width: 820px) { .nav-links { display: none; } }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 18px; border-radius: 999px;
  font-size: 14px; font-weight: 500;
  border: 1px solid transparent; cursor: pointer; transition: all .25s;
  background: transparent; color: var(--ink-strong);
}
.btn-primary {
  background: linear-gradient(135deg, var(--teal-500), #0fa3a3);
  color: var(--on-primary); font-weight: 600;
  box-shadow: var(--shadow-glow-teal), inset 0 1px 0 rgba(255,255,255,0.4);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 12px 40px -10px rgba(20,184,184,0.8), inset 0 1px 0 rgba(255,255,255,0.4); }
.btn-ghost { border-color: var(--line-strong); color: var(--ink-strong); }
.btn-ghost:hover { background: var(--bg-soft); border-color: var(--ink-mute); }
.icon-btn {
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--bg-soft); border: 1px solid var(--line-strong);
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--ink-strong); cursor: pointer; transition: all .25s;
}
.icon-btn:hover { background: var(--bg-soft); border-color: var(--teal-400); color: var(--teal-400); }

/* HERO */
.hero {
  position: relative; min-height: 100vh;
  padding: 140px 0 80px; overflow: hidden;
  background: var(--grad-hero);
}
.hero canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; }
.hero::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at 50% 30%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 30%, #000 30%, transparent 75%);
  z-index: 1;
}
.hero-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 60px; align-items: center; }
@media (max-width: 960px) { .hero-inner { grid-template-columns: 1fr; gap: 40px; } }

.hero h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: clamp(40px, 6.8vw, 88px);
  line-height: 0.98; letter-spacing: -0.035em;
  margin: 22px 0 24px;
}
.hero h1 .gradient {
  background: linear-gradient(120deg, var(--ink-strong) 0%, var(--teal-500) 45%, var(--orange-500) 100%);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.hero h1 > span:not(.gradient):not(.stroke) { color: var(--ink-strong); }
.hero h1 .stroke {
  -webkit-text-stroke: 1.5px var(--teal-500);
  color: transparent;
}
.hero p.lead {
  font-size: 18px; line-height: 1.6; color: var(--ink-soft);
  max-width: 540px; margin: 0 0 36px;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.hero-meta { display: flex; gap: 28px; margin-top: 48px; flex-wrap: wrap; }
.hero-meta-item .num {
  font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: 28px;
  color: var(--ink-strong); display: flex; align-items: baseline; gap: 4px;
}
.hero-meta-item .num span { color: var(--teal-400); }
.hero-meta-item .lbl { font-size: 12px; color: var(--ink-mute); margin-top: 2px; font-family: 'JetBrains Mono', monospace; text-transform: uppercase; letter-spacing: 0.12em; }

/* Hero card / node visual */
.hero-card {
  position: relative; aspect-ratio: 1/1; max-width: 480px; margin-inline: auto;
}
.hero-card .ring {
  position: absolute; inset: 0; border-radius: 50%;
  border: 1px dashed rgba(20,184,184,0.25);
  animation: spin 40s linear infinite;
}
.hero-card .ring.r2 { inset: 14%; border-color: rgba(245,166,35,0.18); animation-duration: 60s; animation-direction: reverse; }
.hero-card .ring.r3 { inset: 28%; border-color: rgba(20,184,184,0.18); animation-duration: 30s; }
@keyframes spin { to { transform: rotate(360deg); } }
.hero-card .logo-center {
  position: absolute; inset: 30%;
  display: flex; align-items: center; justify-content: center;
  border-radius: 30%;
}
.hero-card .logo-center img { width: 100%; filter: drop-shadow(0 10px 50px rgba(20,184,184,0.4)); }
.orbit-dot {
  position: absolute; width: 14px; height: 14px; border-radius: 50%;
  background: var(--teal-400); box-shadow: 0 0 20px var(--teal-400);
  top: 50%; left: 50%; margin: -7px;
}
.orbit-dot.b { background: var(--orange-400); box-shadow: 0 0 20px var(--orange-400); }
.orbit-dot.c { width: 10px; height: 10px; margin: -5px; }
.orbit { position: absolute; inset: 0; animation: spin 18s linear infinite; }
.orbit.r2 { animation-duration: 28s; animation-direction: reverse; }
.orbit.r3 { animation-duration: 42s; }

/* code chip */
.code-chip {
  position: absolute; padding: 10px 14px; border-radius: 12px;
  background: var(--bg-2); border: 1px solid var(--line-strong);
  backdrop-filter: blur(8px); font-family: 'JetBrains Mono', monospace;
  font-size: 12px; color: var(--teal-500); white-space: nowrap;
  box-shadow: var(--shadow-card);
}
.code-chip .k { color: var(--orange-500); }
.code-chip .v { color: var(--ink-strong); }

/* MARQUEE */
.marquee {
  position: relative; z-index: 2;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  background: var(--bg-nav); backdrop-filter: blur(6px);
  overflow: hidden; padding: 18px 0;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee-track { display: flex; gap: 60px; animation: scroll 28s linear infinite; width: max-content; }
.marquee-item { display: inline-flex; align-items: center; gap: 12px; color: var(--ink-soft); font-family: 'Space Grotesk', sans-serif; font-size: 18px; font-weight: 500; }
.marquee-item .star { color: var(--teal-400); font-size: 20px; }
@keyframes scroll { to { transform: translateX(-50%); } }

/* SECTION */
section.s { padding: 110px 0; position: relative; }
@media (max-width: 720px) { section.s { padding: 80px 0; } }
.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head h2 {
  font-family: 'Space Grotesk', sans-serif; font-weight: 700;
  font-size: clamp(32px, 4.5vw, 56px); line-height: 1.04; letter-spacing: -0.03em;
  margin: 16px 0 16px; color: var(--ink-strong);
}
.section-head h2 .accent { color: var(--teal-400); }
.section-head p { font-size: 17px; color: var(--ink-soft); line-height: 1.7; margin: 0; max-width: 580px; }

/* ABOUT */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
@media (max-width: 960px) { .about-grid { grid-template-columns: 1fr; gap: 40px; } }
.about-visual {
  position: relative; aspect-ratio: 5/6; border-radius: 24px; overflow: hidden;
  background: var(--grad-about);
  border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
}
.about-visual::before {
  content: ''; position: absolute; inset: 0;
  background-image: linear-gradient(var(--grid-line-strong) 1px, transparent 1px), linear-gradient(90deg, var(--grid-line-strong) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(circle at center, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(circle at center, #000 30%, transparent 80%);
}
.about-visual .stat-bubble {
  position: absolute; padding: 16px 20px; border-radius: 16px;
  background: var(--bg-2); border: 1px solid var(--line-strong);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-card);
}
.about-visual .stat-bubble .v { font-family: 'Space Grotesk', sans-serif; font-size: 28px; font-weight: 700; color: var(--ink-strong); }
.about-visual .stat-bubble .l { font-size: 12px; color: var(--ink-mute); font-family: 'JetBrains Mono', monospace; text-transform: uppercase; letter-spacing: 0.12em; margin-top: 4px; }
.about-bullets { list-style: none; padding: 0; margin: 32px 0 0; display: grid; gap: 18px; }
.about-bullets li { display: flex; gap: 14px; align-items: flex-start; font-size: 15px; color: var(--ink-soft); line-height: 1.6; }
.about-bullets li .check {
  flex: none; width: 22px; height: 22px; border-radius: 50%;
  background: rgba(20,184,184,0.15); border: 1px solid var(--teal-500);
  display: flex; align-items: center; justify-content: center; color: var(--teal-500);
  margin-top: 1px;
}

/* COURSES */
.courses-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 20px; }
.course-card {
  position: relative; padding: 32px; border-radius: 20px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  overflow: hidden;
  transition: border-color .3s, transform .3s, background .3s;
  min-height: 320px; display: flex; flex-direction: column;
}
.course-card:hover { border-color: var(--line-strong); transform: translateY(-4px); }
.course-card::before {
  content: ''; position: absolute; top: 0; right: 0;
  width: 200px; height: 200px;
  background: radial-gradient(circle, var(--accent, var(--teal-500)), transparent 65%);
  opacity: 0.15; pointer-events: none;
  transition: opacity .3s, transform .4s;
}
.course-card:hover::before { opacity: 0.3; transform: scale(1.2); }
.course-card .num {
  font-family: 'JetBrains Mono', monospace; font-size: 12px;
  color: var(--accent, var(--teal-400)); letter-spacing: 0.12em;
}
.course-card .icon-wrap {
  margin-top: 8px; width: 56px; height: 56px; border-radius: 14px;
  background: var(--bg-soft); border: 1px solid var(--line-strong);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent, var(--teal-400));
}
.course-card h3 { color: var(--ink-strong); }
.course-card h3 { font-family: 'Space Grotesk', sans-serif; font-size: 24px; font-weight: 600; margin: 24px 0 10px; letter-spacing: -0.02em; color: var(--ink-strong); }
.course-card p { color: var(--ink-soft); font-size: 14px; line-height: 1.65; margin: 0 0 18px; flex: 1; }
.course-card .tags { display: flex; flex-wrap: wrap; gap: 6px; }
.course-card .tag {
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  padding: 4px 9px; border-radius: 6px;
  background: var(--bg-soft); color: var(--ink-soft);
  border: 1px solid var(--line);
}
.course-card .arrow {
  position: absolute; bottom: 24px; right: 24px;
  width: 38px; height: 38px; border-radius: 50%;
  background: var(--bg-soft); border: 1px solid var(--line-strong);
  display: flex; align-items: center; justify-content: center;
  color: var(--ink-strong); transition: all .3s;
}
.course-card:hover .arrow { background: var(--accent, var(--teal-500)); border-color: var(--accent, var(--teal-500)); color: var(--on-primary); transform: translateX(2px) translateY(-2px); }
.course-card.span-6 { grid-column: span 6; }
.course-card.span-4 { grid-column: span 4; }
.course-card.span-8 { grid-column: span 8; }
@media (max-width: 960px) {
  .course-card.span-6, .course-card.span-4, .course-card.span-8 { grid-column: span 12; }
}

/* WHY us — terminal-ish */
.why-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: stretch; }
@media (max-width: 960px) { .why-wrap { grid-template-columns: 1fr; } }
.why-card {
  padding: 28px; border-radius: 18px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  display: flex; gap: 18px; align-items: flex-start;
  transition: border-color .3s, transform .3s, background .3s;
}
.why-card:hover { border-color: var(--line-strong); transform: translateY(-3px); }
.why-card .ico {
  flex: none; width: 44px; height: 44px; border-radius: 12px;
  background: rgba(20,184,184,0.10); color: var(--teal-500);
  display: flex; align-items: center; justify-content: center;
  border: 1px solid rgba(20,184,184,0.28);
}
.why-card h4 { color: var(--ink-strong); }
.why-card h4 { font-family: 'Space Grotesk', sans-serif; font-size: 18px; font-weight: 600; margin: 2px 0 6px; }
.why-card p { color: var(--ink-soft); font-size: 14px; line-height: 1.6; margin: 0; }
.why-list { display: grid; gap: 16px; }

.terminal {
  border-radius: 16px; background: var(--bg-terminal); border: 1px solid var(--line-strong);
  overflow: hidden; box-shadow: var(--shadow-card);
}
.terminal .bar { display: flex; align-items: center; gap: 8px; padding: 12px 14px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.terminal .bar .b { width: 12px; height: 12px; border-radius: 50%; background: #344b6c; }
.terminal .bar .label { margin-left: auto; font-family: 'JetBrains Mono', monospace; font-size: 11px; color: #6c7c92; }
.terminal .body { padding: 24px; font-family: 'JetBrains Mono', monospace; font-size: 13px; line-height: 1.85; color: #cbd6e8; }
.terminal .prompt { color: var(--teal-400); }
.terminal .comment { color: var(--ink-mute); }
.terminal .str { color: var(--orange-400); }
.terminal .kw { color: #8aa9ff; }
.terminal .cursor { display: inline-block; width: 8px; height: 14px; background: var(--teal-400); vertical-align: -2px; animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* PATH / STEPS */
.path { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; counter-reset: step; }
@media (max-width: 820px) { .path { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .path { grid-template-columns: 1fr; } }
.path-step {
  padding: 24px; border-radius: 16px;
  background: var(--bg-softer); border: 1px solid var(--line);
  position: relative;
}
.path-step .step-n {
  font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--teal-500);
  letter-spacing: 0.18em;
}
.path-step h5 { font-family: 'Space Grotesk', sans-serif; font-size: 18px; margin: 10px 0 8px; font-weight: 600; color: var(--ink-strong); }
.path-step p { color: var(--ink-soft); font-size: 13px; line-height: 1.6; margin: 0; }

/* CTA */
.cta-wrap {
  position: relative;
  padding: 80px;
  border-radius: 32px;
  background: var(--grad-cta);
  border: 1px solid var(--line-strong); overflow: hidden;
}
@media (max-width: 720px) { .cta-wrap { padding: 48px 28px; border-radius: 24px; } }
.cta-wrap::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(var(--grid-line-strong) 1px, transparent 1px), linear-gradient(90deg, var(--grid-line-strong) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(circle at center, #000 30%, transparent 75%);
}
.cta-wrap h2 {
  font-family: 'Space Grotesk', sans-serif; font-size: clamp(34px, 5vw, 64px);
  line-height: 1.02; letter-spacing: -0.03em; font-weight: 700; margin: 16px 0 18px;
  position: relative; color: var(--ink-strong);
}
.cta-wrap p { color: var(--ink-soft); font-size: 17px; line-height: 1.6; max-width: 540px; margin: 0 0 32px; position: relative; }
.cta-form {
  position: relative; display: flex; gap: 10px; max-width: 560px;
  padding: 8px; border-radius: 999px;
  background: var(--bg-input); border: 1px solid var(--line-strong);
  backdrop-filter: blur(10px);
}
.cta-form input {
  flex: 1; padding: 12px 18px; background: transparent; border: none; outline: none;
  color: var(--ink-strong); font-family: inherit; font-size: 15px;
}
.cta-form input::placeholder { color: var(--ink-mute); }
@media (max-width: 560px) { .cta-form { flex-direction: column; border-radius: 18px; } .cta-form .btn { width: 100%; justify-content: center; } }

/* FOOTER */
footer {
  position: relative; padding: 80px 0 40px; border-top: 1px solid var(--line);
  background: linear-gradient(180deg, var(--bg-1), var(--bg-0));
}
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 60px; }
@media (max-width: 820px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-col h6 { font-family: 'Space Grotesk', sans-serif; font-size: 13px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; margin: 0 0 18px; color: var(--ink-mute); }
.brand-name .accent { color: var(--teal-500); }
.footer-col ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.footer-col a { color: var(--ink-soft); font-size: 14px; transition: color .2s; }
.footer-col a:hover { color: var(--teal-400); }
.footer-tagline { color: var(--ink-soft); font-size: 14px; line-height: 1.7; margin: 16px 0 24px; max-width: 280px; }
.socials { display: flex; gap: 10px; }
.socials a {
  width: 38px; height: 38px; border-radius: 10px;
  background: var(--bg-soft); border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  color: var(--ink-soft); transition: all .2s;
}
.socials a:hover { background: rgba(20,184,184,0.12); border-color: var(--teal-500); color: var(--teal-500); transform: translateY(-2px); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 28px; border-top: 1px solid var(--line); font-size: 13px; color: var(--ink-mute); gap: 16px; flex-wrap: wrap; }
.footer-bottom .made { font-family: 'JetBrains Mono', monospace; }

/* mobile menu toggle */
.menu-btn {
  display: none; width: 40px; height: 40px; border-radius: 10px;
  background: var(--bg-soft); border: 1px solid var(--line-strong);
  align-items: center; justify-content: center; color: var(--ink-strong); cursor: pointer;
}
@media (max-width: 820px) { .menu-btn { display: inline-flex; } }
.mobile-menu {
  position: fixed; inset: 0; z-index: 100; background: var(--bg-mobile-menu);
  backdrop-filter: blur(20px); display: flex; flex-direction: column;
  padding: 80px 32px 32px; gap: 8px;
  transform: translateY(-100%); transition: transform .35s cubic-bezier(.2,.7,.2,1);
}
.mobile-menu.open { transform: none; }
.mobile-menu a { font-family: 'Space Grotesk', sans-serif; font-size: 28px; font-weight: 600; color: var(--ink-strong); padding: 18px 0; border-bottom: 1px solid var(--line); }
.mobile-menu .close { position: absolute; top: 22px; right: 22px; width: 44px; height: 44px; border-radius: 10px; background: var(--bg-soft); border: 1px solid var(--line-strong); display: flex; align-items: center; justify-content: center; color: var(--ink-strong); cursor: pointer; }

/* glow text */
.glow { text-shadow: 0 0 30px rgba(20,184,184,0.6); }