/* Keythentic marketing site — hand-written CSS, no build step required. */

:root {
  --bg: #0b1120;
  --bg-elevated: #111a2e;
  --bg-card: #141d33;
  --border: #24304d;
  --text: #e7ecf7;
  --text-dim: #a7b3cc;
  --text-faint: #6b7793;
  --accent: #37d6b0;
  --accent-strong: #1fb894;
  --accent-soft: rgba(55, 214, 176, 0.12);
  --danger: #f2637a;
  --max-width: 1120px;
  --radius: 14px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; }

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(11, 17, 32, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
}

.brand:hover { text-decoration: none; }

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), #2f8fe0);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #06131f;
  font-size: 0.95rem;
}

.nav-links {
  display: flex;
  gap: 28px;
  align-items: center;
}

.nav-links a {
  color: var(--text-dim);
  font-size: 0.95rem;
  font-weight: 500;
}

.nav-links a:hover { color: var(--text); text-decoration: none; }

.nav-links a.is-active { color: var(--accent); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.btn:hover { text-decoration: none; }

.btn-primary {
  background: var(--accent);
  color: #06131f;
}

.btn-primary:hover { background: var(--accent-strong); }

.btn-outline {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

.btn-disabled {
  background: var(--bg-card);
  color: var(--text-faint);
  border-color: var(--border);
  cursor: not-allowed;
}

.btn-disabled:hover { text-decoration: none; }

.btn-lg { padding: 15px 28px; font-size: 1.02rem; }

/* Hero */
.hero {
  padding: 96px 0 72px;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  line-height: 1.15;
  margin: 0 0 20px;
  letter-spacing: -0.02em;
}

.hero p.lede {
  font-size: 1.15rem;
  color: var(--text-dim);
  max-width: 640px;
  margin: 0 auto 36px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-note {
  margin-top: 16px;
  font-size: 0.85rem;
  color: var(--text-faint);
}

/* Sections */
section { padding: 64px 0; }

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}

.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  margin: 0 0 12px;
  letter-spacing: -0.01em;
}

.section-head p { color: var(--text-dim); margin: 0; }

/* Feature grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 18px;
}

.feature-card h3 {
  margin: 0 0 10px;
  font-size: 1.08rem;
}

.feature-card p {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.95rem;
}

/* Callout / band */
.band {
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.callout {
  text-align: center;
  padding: 56px 0;
}

.callout h2 { margin: 0 0 14px; font-size: 1.7rem; }
.callout p { color: var(--text-dim); margin: 0 0 28px; }

/* Content pages (privacy/terms/etc) */
.page-header {
  padding: 64px 0 32px;
  border-bottom: 1px solid var(--border);
}

.page-header h1 { margin: 0 0 12px; font-size: clamp(1.8rem, 4vw, 2.4rem); }
.page-header .meta { color: var(--text-faint); font-size: 0.9rem; }

.prose {
  max-width: 760px;
  margin: 0 auto;
  padding: 56px 24px 96px;
}

.prose h2 {
  margin: 40px 0 14px;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
}

.prose h2:first-child { margin-top: 0; }

.prose h3 { margin: 28px 0 10px; font-size: 1.1rem; color: var(--text); }

.prose p { color: var(--text-dim); margin: 0 0 16px; }

.prose ul, .prose ol { color: var(--text-dim); padding-left: 22px; margin: 0 0 16px; }
.prose li { margin-bottom: 8px; }

.prose strong { color: var(--text); }

.callout-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 10px;
  padding: 18px 20px;
  margin: 24px 0;
  color: var(--text-dim);
  font-size: 0.95rem;
}

.callout-box strong { color: var(--text); }

/* Steps list (data deletion) */
.steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: 24px 0;
}

.steps li {
  counter-increment: step;
  position: relative;
  padding: 4px 0 20px 44px;
  color: var(--text-dim);
}

.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
}

.steps li strong { color: var(--text); display: block; margin-bottom: 2px; }

/* Forms */
.form-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  max-width: 560px;
  margin: 0 auto;
}

.form-group { margin-bottom: 20px; }

.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 9px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-group textarea { resize: vertical; min-height: 140px; }

.field-error {
  color: var(--danger);
  font-size: 0.83rem;
  margin-top: 6px;
}

.form-errors {
  background: rgba(242, 99, 122, 0.1);
  border: 1px solid rgba(242, 99, 122, 0.35);
  color: #ffb4c2;
  border-radius: 10px;
  padding: 14px 18px;
  margin-bottom: 20px;
  font-size: 0.9rem;
}

.alert-success {
  background: rgba(55, 214, 176, 0.1);
  border: 1px solid rgba(55, 214, 176, 0.35);
  color: var(--accent);
  border-radius: 10px;
  padding: 14px 18px;
  margin-bottom: 20px;
  font-size: 0.92rem;
}

/* honeypot */
.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.support-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.support-info h2 { margin-top: 0; }
.support-info p { color: var(--text-dim); }
.support-info ul { color: var(--text-dim); padding-left: 20px; }
.support-info li { margin-bottom: 10px; }

@media (max-width: 860px) {
  .support-grid { grid-template-columns: 1fr; }
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 48px 0 32px;
  margin-top: 40px;
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  justify-content: space-between;
  margin-bottom: 32px;
}

.footer-brand { max-width: 320px; color: var(--text-faint); font-size: 0.9rem; }
.footer-brand .brand { margin-bottom: 12px; }

.footer-links {
  display: flex;
  gap: 56px;
  flex-wrap: wrap;
}

.footer-col h4 {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-faint);
  margin: 0 0 14px;
}

.footer-col a {
  display: block;
  color: var(--text-dim);
  font-size: 0.92rem;
  margin-bottom: 10px;
}

.footer-col a:hover { color: var(--text); text-decoration: none; }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  color: var(--text-faint);
  font-size: 0.85rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

/* Nav toggle (mobile) */
.nav-toggle { display: none; background: none; border: none; color: var(--text); font-size: 1.4rem; cursor: pointer; }

@media (max-width: 760px) {
  .nav-links {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px;
    display: none;
    gap: 18px;
  }
  .nav-links.is-open { display: flex; }
  .nav-toggle { display: block; }
  .hero { padding: 64px 0 48px; }
}