:root {
  --bg: #0a0a0d;
  --bg-soft: #0f0f13;
  --surface: #16161c;
  --surface-2: #1c1c23;
  --border: #26262f;
  --text: #f2f2f4;
  --text-muted: #9a9aa6;
  --text-faint: #6b6b76;
  --accent: #ff5a1f;
  --accent-dark: #d6440f;
  --accent-glow: rgba(255, 90, 31, 0.35);
  --radius: 10px;
  --max-width: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}

p { margin: 0 0 1em; color: var(--text-muted); }

a { color: var(--accent); text-decoration: none; }
a:hover { color: #ff7a45; }

img { max-width: 100%; display: block; }

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

/* ---------- Header ---------- */

header.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(10, 10, 13, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: linear-gradient(145deg, var(--accent), var(--accent-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  color: #0a0a0d;
  flex-shrink: 0;
}

.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text strong { font-family: "Space Grotesk", sans-serif; font-size: 17px; letter-spacing: 0.02em; }
.brand-text span { font-size: 11px; color: var(--text-faint); text-transform: uppercase; letter-spacing: 0.08em; }

nav.main-nav {
  display: flex;
  gap: 32px;
}

nav.main-nav a {
  color: var(--text-muted);
  font-size: 14.5px;
  font-weight: 500;
  transition: color 0.15s ease;
}

nav.main-nav a:hover,
nav.main-nav a.active {
  color: var(--text);
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mobile-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 8px;
  font-size: 14.5px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  font-family: inherit;
}

.btn-primary {
  background: var(--accent);
  color: #0a0a0d;
  box-shadow: 0 0 0 rgba(0,0,0,0);
}

.btn-primary:hover {
  background: #ff7038;
  color: #0a0a0d;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-secondary {
  background: var(--surface-2);
  border-color: var(--border);
  color: var(--text);
}

.btn-secondary:hover {
  background: #232330;
  color: var(--text);
}

/* ---------- Hero ---------- */

.hero {
  padding: 96px 0 72px;
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(600px 300px at 15% 0%, rgba(255, 90, 31, 0.08), transparent 70%),
    var(--bg);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(255, 90, 31, 0.1);
  border: 1px solid rgba(255, 90, 31, 0.25);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(38px, 6vw, 60px);
  max-width: 720px;
}

.hero .lead {
  font-size: 18px;
  max-width: 620px;
  color: var(--text-muted);
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 28px;
  flex-wrap: wrap;
}

/* ---------- Sections ---------- */

section { padding: 72px 0; border-bottom: 1px solid var(--border); }
section:last-of-type { border-bottom: none; }

.section-head { max-width: 620px; margin-bottom: 40px; }
.section-head h2 { font-size: 30px; }
.section-head p { font-size: 16px; }

.grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.card h3 {
  font-size: 17px;
  margin-bottom: 8px;
  color: var(--text);
}

.card p { font-size: 14.5px; margin-bottom: 0; }

.card .icon-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(255, 90, 31, 0.12);
  color: var(--accent);
  font-weight: 700;
  font-family: "Space Grotesk", sans-serif;
  margin-bottom: 16px;
}

/* Chain / connected-dots list, used on About */
.chain {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 2px solid var(--border);
}

.chain li {
  position: relative;
  padding: 0 0 28px 28px;
  color: var(--text-muted);
  font-size: 15.5px;
}

.chain li:last-child { padding-bottom: 0; }

.chain li::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(255, 90, 31, 0.15);
}

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

/* ---------- Updates / changelog ---------- */

.update-entry {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
}

.update-entry:last-child { border-bottom: none; }

.update-date {
  color: var(--text-faint);
  font-size: 13.5px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding-top: 3px;
}

.update-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.tag-feature { background: rgba(255, 90, 31, 0.12); color: var(--accent); }
.tag-fix { background: rgba(90, 160, 255, 0.12); color: #6ea8ff; }
.tag-note { background: rgba(255, 255, 255, 0.08); color: var(--text-muted); }

.update-entry h3 { font-size: 18px; }
.update-entry p { font-size: 14.5px; margin: 0; }

/* ---------- Legal ---------- */

.legal-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 48px;
  align-items: start;
}

.legal-nav {
  position: sticky;
  top: 90px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.legal-nav a {
  padding: 9px 12px;
  border-radius: 8px;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
}

.legal-nav a:hover { background: var(--surface); color: var(--text); }

.legal-doc h2 {
  font-size: 24px;
  padding-top: 8px;
  margin-top: 48px;
  scroll-margin-top: 90px;
}

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

.legal-doc h3 {
  font-size: 16px;
  margin-top: 28px;
  color: var(--text);
}

.legal-doc p, .legal-doc li { font-size: 14.5px; color: var(--text-muted); }
.legal-doc ul { padding-left: 20px; }

.legal-updated {
  font-size: 13px;
  color: var(--text-faint);
  margin-bottom: 24px;
}

.notice-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  padding: 16px 20px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 40px;
}

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

/* ---------- Contact ---------- */

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}

.contact-card h3 { font-size: 15px; margin-bottom: 4px; }
.contact-card p { font-size: 14.5px; margin-bottom: 0; }

form.contact-form { display: flex; flex-direction: column; gap: 16px; }

.form-row { display: flex; flex-direction: column; gap: 6px; }

.form-row label {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text);
}

.form-row input,
.form-row select,
.form-row textarea {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 11px 14px;
  color: var(--text);
  font-family: inherit;
  font-size: 14.5px;
}

.form-row textarea { resize: vertical; min-height: 120px; }

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

/* ---------- Footer ---------- */

footer.site-footer {
  border-top: 1px solid var(--border);
  padding: 48px 0 32px;
  background: var(--bg-soft);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 32px;
}

.footer-col h4 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  margin-bottom: 14px;
}

.footer-col a {
  display: block;
  color: var(--text-muted);
  font-size: 14.5px;
  margin-bottom: 10px;
}

.footer-col a:hover { color: var(--text); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-faint);
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- Responsive ---------- */

@media (max-width: 860px) {
  nav.main-nav { display: none; }
  .mobile-toggle { display: flex; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .legal-layout { grid-template-columns: 1fr; }
  .legal-nav { position: static; flex-direction: row; flex-wrap: wrap; }
  .contact-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .update-entry { grid-template-columns: 1fr; gap: 8px; }
}

@media (max-width: 540px) {
  .grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .header-inner { padding: 14px 16px; }
}