:root {
  color-scheme: dark;
  --bg: #1a242e;
  --bg-deep: #121820;
  --surface: #2e3c4b;
  --line: #3d4f61;
  --text: #f4f7fa;
  --muted: #9aa8b5;
  --accent: #7eb8ff;
  --danger: #f07178;
  --font-display: "Segoe UI", "Helvetica Neue", sans-serif;
  --font-body: "Segoe UI", "Helvetica Neue", sans-serif;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  min-height: 100%;
  background: radial-gradient(1200px 600px at 20% -10%, #3a5166 0%, transparent 55%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
  color: var(--text);
  font-family: var(--font-body);
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; }

.wrap { width: min(960px, calc(100% - 2rem)); margin: 0 auto; }
.site-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.25rem 0; gap: 1rem;
}
.brand { display: flex; align-items: center; gap: 0.75rem; color: var(--text); font-weight: 700; letter-spacing: 0.02em; }
.brand img { width: 40px; height: 40px; border-radius: 8px; }
.nav { display: flex; flex-wrap: wrap; gap: 0.75rem 1rem; font-size: 0.9rem; }

.hero {
  min-height: calc(100vh - 8rem);
  display: grid; align-content: center; gap: 1.25rem;
  padding: 2rem 0 3rem;
}
.hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.hero .lede { margin: 0; max-width: 36rem; color: var(--muted); font-size: 1.1rem; line-height: 1.55; }
.cta-row { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 0.5rem; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 44px; padding: 0.65rem 1.1rem; border-radius: 6px;
  border: 1px solid var(--line); background: var(--surface); color: var(--text);
  font-weight: 600;
}
.btn-accent { background: #4d7fb5; border-color: #4d7fb5; }
.btn[aria-disabled="true"], .btn:disabled { opacity: 0.55; pointer-events: none; }
.coming-soon { color: var(--muted); font-size: 0.95rem; }

.screens { display: grid; gap: 0.75rem; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); margin-top: 2rem; }
.screens img { border-radius: 8px; border: 1px solid var(--line); background: var(--surface); }

.legal-body { padding: 1.5rem 0 3rem; max-width: 720px; }
.legal-body h1, .legal-body h2, .legal-body h3 { line-height: 1.25; }
.legal-body p, .legal-body li { color: #d7dee5; line-height: 1.6; }
.legal-body blockquote { border-left: 3px solid var(--line); margin: 1rem 0; padding-left: 1rem; color: var(--muted); }

.delete-panel {
  margin-top: 2rem; padding: 1.25rem; border: 1px solid var(--line);
  border-radius: 8px; background: rgba(46, 60, 75, 0.55);
}
.delete-panel h2 { margin-top: 0; }
.danger { color: var(--danger); }
.auth-row { display: flex; flex-wrap: wrap; gap: 0.75rem; margin: 1rem 0; }
.confirm-box { display: grid; gap: 0.75rem; margin-top: 1rem; }
.confirm-box input {
  min-height: 44px; padding: 0.6rem 0.75rem; border-radius: 6px;
  border: 1px solid var(--line); background: var(--bg-deep); color: var(--text);
}

.site-footer {
  border-top: 1px solid var(--line); padding: 2rem 0 2.5rem; margin-top: 2rem;
  color: var(--muted); font-size: 0.9rem;
}
.footer-links, .social-links { display: flex; flex-wrap: wrap; gap: 0.75rem 1rem; margin: 0.75rem 0; }
.footer-meta { margin-top: 1rem; }
.error { color: var(--danger); }
.ok { color: #8bd49a; }