/* GreenDuck landing — plain CSS, no build step */

:root {
  --bg: #06100b;
  --bg-2: #0a1610;
  --card: #0c1912;
  --line: #1b2c22;
  --line-2: #26402f;
  --text: #e7eee9;
  --muted: #8e9f95;
  --accent: #3ee07f;
  --accent-hover: #63ec97;
  --accent-ink: #04140a;
  --radius: 14px;
  --container: 1160px;
  --font: "Space Grotesk", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, p { margin: 0; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.mono { font-family: var(--mono); }
.accent { color: var(--accent); }

.kicker {
  color: var(--accent);
  font-size: 13px;
  letter-spacing: 0.14em;
  margin-bottom: 14px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 15px 30px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
  font-size: 16px;
  transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
  box-shadow: 0 0 0 0 rgba(62, 224, 127, 0);
}
.btn:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 8px 30px -8px rgba(62, 224, 127, .55);
}
.btn:focus-visible,
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.btn--sm { padding: 10px 20px; font-size: 14px; }

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(6, 16, 11, .78);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.01em;
}
.brand img { width: 40px; height: auto; }

.nav { display: flex; gap: 32px; }
.nav a {
  color: var(--muted);
  font-size: 15px;
  transition: color .2s ease;
}
.nav a:hover { color: var(--text); }

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  padding: 120px 0 112px;
  border-bottom: 1px solid var(--line);
}
.hero::before {
  content: "";
  position: absolute;
  inset: -20% -10% auto;
  height: 620px;
  background: radial-gradient(ellipse at 50% 0%, rgba(62, 224, 127, .16), transparent 60%);
  pointer-events: none;
}
.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 30%, #000 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 30%, #000 20%, transparent 70%);
  opacity: .55;
  pointer-events: none;
}
.hero__inner {
  position: relative;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.hero__title {
  max-width: 980px;
  font-size: clamp(2.3rem, 6vw, 4.6rem);
  line-height: 1.05;
  letter-spacing: -0.035em;
  font-weight: 700;
}
.hero__sub {
  margin-top: 24px;
  max-width: 620px;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
}
.hero__actions { margin-top: 40px; }

.chips {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin: 48px 0 0;
  padding: 0;
}
.chips li {
  padding: 6px 16px;
  border: 1px solid var(--line-2);
  border-radius: 6px;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.12em;
}

/* Sections */
.section {
  padding: 104px 0;
  border-bottom: 1px solid var(--line);
}
.section__title {
  font-size: clamp(1.9rem, 4vw, 2.9rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  font-weight: 700;
  margin-bottom: 48px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.card {
  padding: 32px 28px;
  background: linear-gradient(180deg, var(--card), var(--bg-2));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color .25s ease, transform .25s ease;
}
.card:hover {
  border-color: var(--line-2);
  transform: translateY(-2px);
}
.card h3 {
  font-size: 1.3rem;
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}
.card p { color: var(--muted); }

.card__big {
  color: var(--accent);
  font-size: clamp(1.6rem, 2.6vw, 2.1rem) !important;
  letter-spacing: -0.03em !important;
}

.card--service { position: relative; }
.card__num {
  display: inline-block;
  color: var(--accent);
  font-size: 13px;
  letter-spacing: 0.1em;
  margin-bottom: 28px;
  padding: 4px 10px;
  border: 1px solid var(--line-2);
  border-radius: 6px;
}

/* Audit Process */
.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  counter-reset: none;
}
.step {
  position: relative;
  padding-top: 28px;
  border-top: 1px solid var(--line-2);
}
.step::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 0;
  width: 7px;
  height: 7px;
  background: var(--accent);
}
.step__num {
  display: block;
  color: var(--accent);
  font-size: 13px;
  letter-spacing: 0.1em;
  margin-bottom: 14px;
}
.step h3 {
  font-size: 1.3rem;
  letter-spacing: -0.01em;
  margin-bottom: 10px;
}
.step p { color: var(--muted); font-size: 16px; }

/* Coverage */
.coverage {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.tags {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tags li {
  padding: 5px 12px;
  border: 1px solid var(--line-2);
  border-radius: 6px;
  color: var(--text);
  font-size: 13px;
}
.tooling {
  margin-top: 20px;
  padding: 8px 28px;
}
.tooling:hover { transform: none; }
.tooling__row {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}
.tooling__row:last-child { border-bottom: 0; }
.tooling__label { color: var(--accent); font-size: 14px; padding-top: 2px; }

/* What we audit (inside Services) */
.audit-types {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px dashed var(--line-2);
}
.audit-types__title {
  color: var(--muted);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

/* What we look for */
.checklist {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
}
.checklist li {
  position: relative;
  padding: 9px 0 9px 22px;
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.45;
  border-bottom: 1px solid var(--line);
}
.checklist li:last-child { border-bottom: 0; }
.checklist code {
  font-family: var(--mono);
  font-size: 0.88em;
  color: var(--text);
  white-space: nowrap;
}
.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  width: 7px;
  height: 7px;
  background: var(--accent);
}

/* Disclaimer */
.disclaimer {
  border-top: 1px solid var(--line);
  margin-top: 28px;
  padding-top: 20px;
  color: #6b7a71;
  font-size: 13px;
  line-height: 1.6;
  max-width: 880px;
}

/* Severity */
.severity {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-2);
  overflow: hidden;
}
.severity__row {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 16px;
  align-items: center;
  padding: 20px 28px;
  border-bottom: 1px solid var(--line);
}
.severity__row:last-child { border-bottom: 0; }
.severity__row p { color: var(--muted); }
.sev {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text);
}
.sev::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 2px;
  background: var(--c);
  box-shadow: 0 0 12px var(--c);
}
.sev--critical { --c: #ff4d4f; }
.sev--high     { --c: #ff8a3d; }
.sev--medium   { --c: #f5c84b; }
.sev--low      { --c: #3ee07f; }
.sev--info     { --c: #7d8c84; }

/* FAQ */
.faq {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 48px;
  align-items: start;
}
.faq .section__title { margin-bottom: 0; }
.faq__list details {
  border-bottom: 1px solid var(--line);
}
.faq__list details:first-child { border-top: 1px solid var(--line); }
.faq__list summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 22px 0;
  font-size: 1.1rem;
  font-weight: 500;
  transition: color .2s ease;
}
.faq__list summary::-webkit-details-marker { display: none; }
.faq__list summary::after {
  content: "+";
  font-family: var(--mono);
  color: var(--accent);
  font-size: 1.3rem;
  line-height: 1;
  transition: transform .2s ease;
}
.faq__list details[open] summary::after { transform: rotate(45deg); }
.faq__list summary:hover { color: var(--accent); }
.faq__list details p {
  color: var(--muted);
  padding: 0 32px 24px 0;
}
.faq__list details a { color: var(--accent); }

/* About */
.about {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 48px;
  align-items: start;
}
.about .section__title { margin-bottom: 0; }
.about__body p {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  line-height: 1.6;
  color: var(--text);
}
.link {
  display: inline-block;
  margin-top: 28px;
  color: var(--accent);
  font-size: 15px;
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease;
}
.link:hover { border-color: var(--accent); }

/* Contact */
.contact {
  background: radial-gradient(ellipse at 50% 100%, rgba(62, 224, 127, .12), transparent 60%);
}
.contact__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 28px;
}
.contact__title {
  font-size: clamp(1.9rem, 4.5vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
}
.contact__tg { color: var(--muted); font-size: 15px; }
.contact__tg a { color: var(--accent); }
.contact__tg a:hover { text-decoration: underline; }

/* Footer */
.footer { padding: 36px 0; }
.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.footer__copy { color: var(--muted); font-size: 14px; }
.footer__top {
  color: var(--muted);
  font-size: 13px;
  transition: color .2s ease;
}
.footer__top:hover { color: var(--accent); }

/* Responsive */
@media (max-width: 900px) {
  .cards,
  .coverage { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 36px; }
  .about,
  .faq { grid-template-columns: 1fr; gap: 24px; }
}

@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; row-gap: 28px; }
  .tooling { padding: 4px 20px; }
  .tooling__row,
  .severity__row { grid-template-columns: 1fr; gap: 6px; }
  .severity__row { padding: 18px 20px; }
}

@media (max-width: 720px) {
  .container { padding: 0 16px; }
  .nav { display: none; }
  .header__inner { height: 64px; }
  .brand { font-size: 18px; }
  .hero { padding: 80px 0 72px; }
  .section { padding: 72px 0; }
  .section__title { margin-bottom: 32px; }
  .card { padding: 26px 22px; }
  .footer__inner { flex-direction: column; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}