/* DiffusionWiFi — modern redesign */

:root {
  --bg: #F7F5F0;
  --bg-2: #EFEDE6;
  --ink: #0E0F12;
  --ink-2: #2A2C32;
  --ink-3: #6A6D75;
  --line: #1A1B1F1A;
  --line-2: #0E0F1212;
  --accent: oklch(0.62 0.18 250);
  --accent-ink: oklch(0.42 0.18 250);
  --accent-soft: oklch(0.94 0.04 250);
  --sage: oklch(0.84 0.04 145);
  --warn: oklch(0.72 0.16 60);

  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 18px;

  --max: 1280px;
  --gutter: clamp(20px, 4vw, 64px);

  --type-display: "Space Grotesk", "Söhne", ui-sans-serif, sans-serif;
  --type-serif: "Instrument Serif", "Iowan Old Style", "Garamond", serif;
  --type-body: "Space Grotesk", ui-sans-serif, sans-serif;
  --type-mono: "JetBrains Mono", ui-monospace, monospace;
}

[data-theme="dark"] {
  --bg: #0B0C0E;
  --bg-2: #131418;
  --ink: #F2F0EA;
  --ink-2: #C7C8CC;
  --ink-3: #8A8D95;
  --line: #FFFFFF14;
  --line-2: #FFFFFF0A;
  --accent: oklch(0.72 0.17 250);
  --accent-ink: oklch(0.86 0.12 250);
  --accent-soft: oklch(0.26 0.06 250);
  --sage: oklch(0.5 0.04 145);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--type-body);
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-size: 16px;
  line-height: 1.5;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

/* Layout */
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }
.section { padding: clamp(72px, 9vw, 140px) 0; position: relative; }
.section-sm { padding: clamp(40px, 5vw, 72px) 0; }

/* Typography */
.eyebrow {
  font-family: var(--type-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.eyebrow::before {
  content: "";
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
  display: inline-block;
}

h1, h2, h3, h4 { font-family: var(--type-display); font-weight: 500; letter-spacing: -0.02em; margin: 0; line-height: 1.04; }
.display {
  font-size: clamp(48px, 7.2vw, 112px);
  letter-spacing: -0.035em;
  line-height: 0.95;
  font-weight: 500;
}
.display .serif {
  font-family: var(--type-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.02em;
}
h2.title {
  font-size: clamp(34px, 4.6vw, 64px);
  letter-spacing: -0.03em;
  line-height: 1;
}
h2.title .serif {
  font-family: var(--type-serif); font-style: italic; font-weight: 400;
}
.lede {
  font-size: clamp(17px, 1.4vw, 20px);
  color: var(--ink-2);
  line-height: 1.5;
  max-width: 56ch;
  text-wrap: pretty;
}

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s, background .2s;
}
.nav.scrolled { border-bottom-color: var(--line); }
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}
.nav-logo { display: flex; align-items: center; gap: 10px; }
.nav-logo svg { height: 22px; width: auto; display: block; }
.nav-links {
  display: flex; gap: 4px; align-items: center;
  font-size: 14px;
}
.nav-links a {
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--ink-2);
  transition: background .15s, color .15s;
}
.nav-links a:hover { background: var(--bg-2); color: var(--ink); }
.nav-links a.active { color: var(--ink); }
.nav-right { display: flex; gap: 10px; align-items: center; }

@media (max-width: 760px) {
  .nav-links { display: none; }
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.005em;
  transition: transform .15s, background .15s, box-shadow .15s, border-color .15s;
  white-space: nowrap;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--ink);
  color: var(--bg);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 10px 30px -10px var(--ink); }
.btn-secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn-secondary:hover { background: var(--bg-2); }
.btn-accent {
  background: var(--accent);
  color: white;
}
.btn-accent:hover { transform: translateY(-1px); filter: brightness(1.05); }
.btn .arrow { transition: transform .2s; }
.btn:hover .arrow { transform: translateX(3px); }

/* Hero */
.hero { position: relative; padding: clamp(64px, 8vw, 120px) 0 clamp(56px, 7vw, 100px); overflow: hidden; }
.hero-grid { position: absolute; inset: 0; pointer-events: none; opacity: 0.55; z-index: 0; }
.hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr; gap: 40px; }
.hero-eyebrow-row { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 5px 12px 5px 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--bg);
  font-size: 12px;
  color: var(--ink-2);
}
.hero-badge .dot {
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--sage);
  display: grid; place-items: center;
  position: relative;
}
.hero-badge .dot::after {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: #1b8a5b;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 #1b8a5b88; }
  50% { box-shadow: 0 0 0 6px #1b8a5b00; }
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 8px; }
.hero-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 32px;
  padding: 28px 0 0;
  margin-top: 40px;
  border-top: 1px solid var(--line);
}
.hero-meta .item { display: flex; flex-direction: column; gap: 4px; }
.hero-meta .num {
  font-family: var(--type-display);
  font-size: clamp(28px, 3vw, 40px);
  letter-spacing: -0.03em;
  line-height: 1;
}
.hero-meta .num .unit { color: var(--ink-3); font-size: 0.55em; margin-left: 2px; }
.hero-meta .label { font-size: 12px; color: var(--ink-3); font-family: var(--type-mono); text-transform: uppercase; letter-spacing: 0.1em; }

/* Network visual */
.network-vis {
  position: relative;
  aspect-ratio: 16 / 8;
  width: 100%;
  border-radius: var(--radius-lg);
  background:
    radial-gradient(60% 60% at 50% 40%, color-mix(in srgb, var(--accent) 12%, transparent) 0%, transparent 70%),
    var(--bg-2);
  border: 1px solid var(--line);
  overflow: hidden;
}
.network-vis svg { width: 100%; height: 100%; display: block; }
.network-vis .label {
  position: absolute;
  font-family: var(--type-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-3);
  padding: 4px 8px;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(8px);
  border: 1px solid var(--line);
  border-radius: 999px;
}

/* Marquee strip */
.strip {
  border-block: 1px solid var(--line);
  padding: 22px 0;
  overflow: hidden;
  background: var(--bg);
}
.strip-track {
  display: flex; gap: 64px;
  white-space: nowrap;
  animation: marquee 38s linear infinite;
  font-family: var(--type-mono); font-size: 13px; color: var(--ink-3);
  text-transform: uppercase; letter-spacing: 0.1em;
}
.strip-track span { display: inline-flex; align-items: center; gap: 64px; }
.strip-track svg { opacity: .6; }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* Partners */
.partners .title {
  font-size: clamp(28px, 4vw, 44px);
  letter-spacing: -0.02em;
}
.partners-grid {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
@media (max-width: 720px) {
  .partners-grid { grid-template-columns: 1fr; }
}
.partners-link {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100px;
  padding: 28px 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  text-decoration: none;
  transition: border-color .2s, box-shadow .2s, transform .15s;
}
.partners-link:hover {
  border-color: color-mix(in srgb, var(--ink) 22%, var(--line));
  box-shadow: 0 10px 32px -14px color-mix(in srgb, var(--ink) 28%, transparent);
}
.partners-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.partners-link img {
  max-height: 44px;
  width: auto;
  max-width: min(220px, 100%);
  object-fit: contain;
}
.partners-link--dark { background: #0b0c0e; }
.partners-link--light {
  background: #fff;
  border-color: color-mix(in srgb, var(--ink) 12%, var(--line));
}

/* Section header */
.section-head {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px 64px;
  align-items: end;
  margin-bottom: 56px;
}
.section-head .left { display: flex; flex-direction: column; gap: 20px; }
@media (max-width: 760px) {
  .section-head { grid-template-columns: 1fr; }
}

/* Services */
.services {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.service {
  background: var(--bg);
  padding: 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
  position: relative;
  cursor: pointer;
  transition: background .2s;
}
.service:hover { background: var(--bg-2); }
.service .num {
  font-family: var(--type-mono);
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: 0.1em;
}
.service h3 {
  font-size: clamp(22px, 2.4vw, 32px);
  letter-spacing: -0.02em;
  font-weight: 500;
  margin-bottom: 14px;
}
.service .body { font-size: 15px; color: var(--ink-2); max-width: 50ch; }
.service .features {
  display: grid; gap: 10px;
  margin-top: 20px;
  font-size: 14px;
  color: var(--ink-2);
}
.service .features li { display: flex; align-items: flex-start; gap: 10px; }
.service .features li::before {
  content: ""; width: 4px; height: 4px; border-radius: 50%;
  background: var(--accent); margin-top: 9px; flex-shrink: 0;
}
.service-aside {
  display: flex; flex-direction: column; gap: 14px;
  align-items: flex-start;
}
.service-aside .tag {
  font-family: var(--type-mono); font-size: 10px; text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--ink-3); padding: 4px 8px; border: 1px solid var(--line); border-radius: 999px;
}
.service-graphic {
  width: 100%; aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  background: var(--bg-2);
  border: 1px solid var(--line);
  position: relative; overflow: hidden;
}
@media (max-width: 860px) {
  .service { grid-template-columns: 1fr; }
}

/* Locations */
.locations-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 24px;
  align-items: stretch;
}
@media (max-width: 900px) { .locations-grid { grid-template-columns: 1fr; } }
.map-card {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
  overflow: hidden;
  min-height: 480px;
  display: flex; flex-direction: column;
}
.map-card .map-svg { flex: 1; display: block; width: 100%; height: 100%; }
.map-card .map-svg path { transition: fill .2s, stroke .2s; }
.map-state-label {
  position: absolute;
  font-family: var(--type-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink);
  padding: 4px 8px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 999px;
  pointer-events: none;
  display: flex; align-items: center; gap: 6px;
}
.map-state-label::before {
  content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--accent);
}

.state-list {
  display: flex; flex-direction: column; gap: 12px;
}
.state-card {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  cursor: pointer;
  transition: background .15s, border-color .15s, transform .15s;
}
.state-card.active {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}
.state-card .row { display: flex; align-items: center; justify-content: space-between; }
.state-card .name { font-size: 18px; font-weight: 500; letter-spacing: -0.01em; }
.state-card .count { font-family: var(--type-mono); font-size: 11px; opacity: 0.6; }
.state-card .cities {
  display: flex; gap: 6px; flex-wrap: wrap; margin-top: 12px;
  font-size: 12px;
}
.state-card .city {
  padding: 3px 9px;
  background: var(--bg-2);
  border-radius: 999px;
  color: var(--ink-2);
}
.state-card.active .city {
  background: #ffffff14;
  color: var(--bg);
}

/* How it works */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
@media (max-width: 900px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .steps { grid-template-columns: 1fr; } }
.step {
  background: var(--bg);
  padding: 32px 24px;
  display: flex; flex-direction: column; gap: 12px;
  min-height: 220px;
}
.step .num {
  font-family: var(--type-mono); font-size: 11px; color: var(--ink-3); letter-spacing: 0.1em;
}
.step h4 { font-size: 22px; font-weight: 500; letter-spacing: -0.015em; }
.step p { color: var(--ink-2); font-size: 14px; margin: 0; max-width: 32ch; }

/* Stats */
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: var(--ink);
  border-radius: var(--radius-lg);
  overflow: hidden;
  color: var(--bg);
}
@media (max-width: 760px) { .stats { grid-template-columns: repeat(2, 1fr); } }
.stat {
  background: var(--ink);
  padding: 36px 28px;
  display: flex; flex-direction: column; gap: 8px;
}
.stat .v {
  font-family: var(--type-display);
  font-size: clamp(38px, 5vw, 64px);
  letter-spacing: -0.03em; line-height: 1;
}
.stat .v .unit { font-size: 0.45em; color: color-mix(in srgb, var(--bg) 50%, transparent); margin-left: 2px; }
.stat .l { font-family: var(--type-mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; opacity: 0.5; }
.stat .d { font-size: 13px; color: color-mix(in srgb, var(--bg) 75%, transparent); margin-top: 8px; }

/* Testimonial */
.testimonial {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(28px, 4vw, 56px);
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 40px;
  background: var(--bg);
}
@media (max-width: 860px) { .testimonial { grid-template-columns: 1fr; } }
.testimonial q {
  font-family: var(--type-serif); font-style: italic;
  font-size: clamp(24px, 2.6vw, 38px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  quotes: "\201C" "\201D";
  display: block;
}
.testimonial q::before { content: open-quote; }
.testimonial q::after { content: close-quote; }
.testimonial .who { margin-top: 24px; font-size: 14px; color: var(--ink-3); }
.testimonial-aside {
  display: flex; flex-direction: column; justify-content: space-between; gap: 16px;
  border-left: 1px solid var(--line);
  padding-left: 32px;
}
@media (max-width: 860px) {
  .testimonial-aside { border-left: 0; padding-left: 0; border-top: 1px solid var(--line); padding-top: 24px; }
}
.testimonial-aside .v { font-family: var(--type-display); font-size: 38px; letter-spacing: -0.02em; line-height: 1; }
.testimonial-aside .l { font-size: 12px; color: var(--ink-3); font-family: var(--type-mono); text-transform: uppercase; letter-spacing: 0.1em; }

/* Contact form */
.contact-grid {
  display: grid; grid-template-columns: 1fr 1.2fr; gap: 56px;
  align-items: start;
}
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; } }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-family: var(--type-mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--ink-3); }
.field input, .field textarea, .field select {
  background: var(--bg);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 14px;
  font: inherit;
  font-size: 15px;
  transition: border-color .15s, box-shadow .15s;
  outline: none;
}
.field input:focus, .field textarea:focus, .field select:focus {
  border-color: var(--ink);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--ink) 8%, transparent);
}
.field textarea { resize: vertical; min-height: 110px; }
.field.error input, .field.error textarea { border-color: #c63838; }
.field .err { font-size: 12px; color: #c63838; }
.contact-form { display: flex; flex-direction: column; gap: 18px; }
.contact-form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 600px) { .contact-form .row { grid-template-columns: 1fr; } }
.contact-aside {
  display: flex; flex-direction: column; gap: 28px;
}
.contact-aside .block {
  display: flex; flex-direction: column; gap: 6px;
  padding-block: 18px;
  border-top: 1px solid var(--line);
}
.contact-aside .block:first-of-type { border-top: 0; padding-top: 0; }
.contact-aside .block .l { font-family: var(--type-mono); font-size: 11px; color: var(--ink-3); text-transform: uppercase; letter-spacing: 0.1em; }
.contact-aside .block .v { font-size: 17px; }

/* CTA */
.cta {
  background: var(--ink);
  color: var(--bg);
  border-radius: var(--radius-lg);
  padding: clamp(40px, 6vw, 88px);
  position: relative;
  overflow: hidden;
}
.cta-inner { display: grid; grid-template-columns: 1.5fr 1fr; gap: 32px; align-items: end; position: relative; z-index: 1; }
@media (max-width: 760px) { .cta-inner { grid-template-columns: 1fr; align-items: start; } }
.cta h2 {
  font-size: clamp(36px, 5vw, 72px);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1;
}
.cta h2 .serif { font-family: var(--type-serif); font-style: italic; font-weight: 400; }
.cta .btn-primary { background: var(--bg); color: var(--ink); }
.cta-decor { position: absolute; right: -60px; top: -60px; opacity: 0.18; pointer-events: none; }

/* Footer */
.footer {
  padding: 56px 0 32px;
  border-top: 1px solid var(--line);
  color: var(--ink-2);
}
.footer-top {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px;
  margin-bottom: 48px;
}
@media (max-width: 760px) { .footer-top { grid-template-columns: 1fr 1fr; } }
.footer h5 { font-family: var(--type-mono); font-size: 11px; color: var(--ink-3); text-transform: uppercase; letter-spacing: 0.1em; font-weight: 500; margin: 0 0 14px; }
.footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; font-size: 14px; }
.footer ul a:hover { color: var(--ink); }
.footer-bottom {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 12px; color: var(--ink-3);
  padding-top: 24px; border-top: 1px solid var(--line); gap: 16px; flex-wrap: wrap;
}

/* Decorative dot grid */
.dotgrid {
  background-image: radial-gradient(circle, var(--line) 1px, transparent 1.4px);
  background-size: 22px 22px;
}

/* Reveal-on-scroll */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* Utilities */
.hr { border: 0; border-top: 1px solid var(--line); margin: 0; }
.text-muted { color: var(--ink-3); }
.text-soft { color: var(--ink-2); }
.mono { font-family: var(--type-mono); }
.serif { font-family: var(--type-serif); font-style: italic; }