/* ============================================================
   Firstance — minimal landing (firstdoor.app aesthetic)
   Royal blue #0058f8 · faded door watermark · light + dark
   ============================================================ */

:root {
  --blue:    #0058f8;
  --wrap:    1080px;
  --ease:    cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Dark theme (default) ---------- */
[data-theme="dark"] {
  --bg:      #060a14;
  --bg-alt:  #080d1a;
  --text:    #eef2fb;
  --muted:   #8b93ab;
  --faint:   #5a6480;
  --accent:  #3d7bff;
  --line:    rgba(255, 255, 255, 0.09);
  --line-2:  rgba(255, 255, 255, 0.16);
  --card:    rgba(255, 255, 255, 0.015);
  --nav-bg:  rgba(6, 10, 20, 0.7);
  --toast-bg:#0d1424;
  --door-op: 0.035;
}

/* ---------- Light theme ---------- */
[data-theme="light"] {
  --bg:      #f5f7fc;
  --bg-alt:  #eceff7;
  --text:    #0b1220;
  --muted:   #55607a;
  --faint:   #8b93a8;
  --accent:  #0050e6;
  --line:    rgba(11, 18, 32, 0.10);
  --line-2:  rgba(11, 18, 32, 0.18);
  --card:    rgba(0, 40, 120, 0.02);
  --nav-bg:  rgba(245, 247, 252, 0.75);
  --toast-bg:#ffffff;
  --door-op: 0.05;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  font-family: "Inter", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background 0.3s var(--ease), color 0.3s var(--ease);
}

h1, h2, h3 { font-family: "Space Grotesk", sans-serif; font-weight: 600; line-height: 1.1; letter-spacing: -0.02em; }
code { font-family: "JetBrains Mono", monospace; }
a { color: inherit; text-decoration: none; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 26px; }
.blue { color: var(--accent); }
.dsk { display: inline; }

/* ---------- Faded door watermark ---------- */
.door-bg {
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background: url("logo.png") no-repeat center 42%;
  background-size: min(880px, 92vw);
  opacity: var(--door-op);
  transition: opacity 0.3s var(--ease);
}
.vignette {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(1200px 700px at 50% -10%, rgba(0, 88, 248, 0.10), transparent 60%),
    radial-gradient(900px 900px at 50% 120%, rgba(0, 88, 248, 0.06), transparent 60%);
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: "Space Grotesk", sans-serif; font-weight: 500; font-size: 15px;
  padding: 12px 22px; border-radius: 999px; border: 1px solid transparent; background: transparent;
  cursor: pointer; transition: transform 0.18s var(--ease), background 0.18s, border-color 0.18s, box-shadow 0.18s, color 0.18s;
  white-space: nowrap;
}
.btn-sm { padding: 9px 17px; font-size: 14px; }
.btn-lg { padding: 14px 28px; font-size: 16px; }
.btn:hover { transform: translateY(-1px); }

.btn-blue { background: var(--blue); color: #fff; box-shadow: 0 6px 22px rgba(0, 88, 248, 0.32); }
.btn-blue:hover { background: #0f63ff; box-shadow: 0 10px 30px rgba(0, 88, 248, 0.5); }

.btn-line { border-color: var(--line-2); color: var(--text); }
.btn-line:hover { border-color: var(--accent); color: var(--accent); }

/* ============================================================
   Nav
   ============================================================ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  border-bottom: 1px solid transparent; transition: background 0.3s, border-color 0.3s, backdrop-filter 0.3s;
}
.nav.scrolled { background: var(--nav-bg); backdrop-filter: blur(16px); border-bottom-color: var(--line); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }

.brand { display: inline-flex; align-items: center; gap: 9px; font-family: "Space Grotesk"; font-weight: 600; font-size: 18px; letter-spacing: -0.01em; }
.brand-mark { height: 24px; width: auto; display: block; }
.brand-mark-blue { display: none; }
[data-theme="light"] .brand-mark-white { display: none; }
[data-theme="light"] .brand-mark-blue { display: block; }

.nav-links { display: flex; gap: 30px; }
.nav-links a { color: var(--muted); font-size: 15px; transition: color 0.2s; }
.nav-links a:hover { color: var(--text); }

.nav-right { display: flex; align-items: center; gap: 12px; }

.theme-btn {
  display: grid; place-items: center; width: 38px; height: 38px; border-radius: 999px;
  border: 1px solid var(--line-2); background: var(--card); color: var(--muted);
  cursor: pointer; transition: color 0.2s, border-color 0.2s, transform 0.2s;
}
.theme-btn:hover { color: var(--accent); border-color: var(--accent); transform: translateY(-1px); }
.ic-sun { display: none; }
[data-theme="light"] .ic-moon { display: none; }
[data-theme="light"] .ic-sun { display: block; }

.nav-toggle { display: none; flex-direction: column; gap: 6px; background: none; border: 0; cursor: pointer; padding: 6px; }
.nav-toggle span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: transform 0.3s, opacity 0.3s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(4px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { transform: translateY(-4px) rotate(-45deg); }

/* ============================================================
   Hero
   ============================================================ */
.hero { padding: 172px 0 108px; }
.eyebrow {
  font-family: "JetBrains Mono", monospace; font-size: 12.5px; text-transform: uppercase;
  letter-spacing: 0.14em; color: var(--faint); margin-bottom: 22px;
}
.hero h1 { font-size: clamp(46px, 8.5vw, 96px); font-weight: 700; letter-spacing: -0.035em; margin-bottom: 28px; }
.hero-sub { max-width: 620px; font-size: clamp(16px, 2vw, 19px); color: var(--muted); margin-bottom: 38px; }
.hero-sub strong, .lead strong { color: var(--text); font-weight: 600; }

.cta { display: flex; gap: 13px; flex-wrap: wrap; }

/* address lines */
.idline, .vault-box {
  display: inline-flex; align-items: center; gap: 12px; margin-top: 40px;
  padding: 9px 9px 9px 16px; border: 1px solid var(--line); border-radius: 999px;
  background: var(--card); cursor: pointer; transition: border-color 0.2s; max-width: 100%;
}
.idline:hover, .vault-box:hover { border-color: var(--blue); }
.idline-k { font-family: "JetBrains Mono"; font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--faint); }
.idline code, .vault-box code { font-family: "JetBrains Mono"; font-size: 12.5px; color: var(--muted); word-break: break-all; }
.copy {
  display: grid; place-items: center; width: 32px; height: 32px; border-radius: 999px; flex-shrink: 0;
  border: 1px solid var(--line-2); background: var(--card); color: var(--muted);
  cursor: pointer; transition: color 0.2s, border-color 0.2s;
}
.copy:hover { color: var(--accent); border-color: var(--accent); }

/* ============================================================
   Blocks
   ============================================================ */
.block { padding: 104px 0; }
.block.alt { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.block h2, .final h2 { font-size: clamp(28px, 4.4vw, 46px); margin: 6px 0 22px; }
.blue-head { color: var(--accent); }
.lead { max-width: 660px; font-size: 17px; color: var(--muted); }

/* ---------- Tiers ---------- */
.tiers { display: flex; align-items: stretch; gap: 12px; margin-top: 44px; flex-wrap: wrap; }
.tier {
  flex: 1; min-width: 160px; padding: 26px 24px; border: 1px solid var(--line); border-radius: 14px;
  background: var(--card); display: flex; flex-direction: column; gap: 14px;
  transition: border-color 0.25s, transform 0.25s var(--ease);
}
.tier:hover { border-color: var(--line-2); transform: translateY(-3px); }
.tier-mc { font-family: "JetBrains Mono"; font-size: 14px; color: var(--muted); }
.tier-rate { font-family: "Space Grotesk"; font-size: 40px; font-weight: 700; letter-spacing: -0.03em; }
.tier-rate .pct { font-size: 15px; font-weight: 500; color: var(--muted); letter-spacing: 0; margin-left: 3px; }
.tier-arrow { display: grid; place-items: center; color: var(--faint); font-size: 22px; }
.tiers-note { margin-top: 22px; color: var(--muted); font-size: 15px; }
code { color: var(--accent); background: rgba(0, 88, 248, 0.12); padding: 1px 6px; border-radius: 5px; font-size: 0.88em; }

/* ---------- Duo (day one / terminal) ---------- */
.duo { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 44px; }
.duo-card { padding: 34px 32px; border: 1px solid var(--line); border-radius: 16px; background: var(--card); }
.duo-card.accent { border-color: rgba(0, 88, 248, 0.4); background: rgba(0, 88, 248, 0.06); }
.duo-tag { font-family: "JetBrains Mono"; font-size: 12.5px; letter-spacing: 0.05em; color: var(--faint); margin-bottom: 18px; }
.duo-card.accent .duo-tag { color: var(--accent); }
.duo-card h3 { font-size: 24px; margin-bottom: 12px; }
.duo-card p { color: var(--muted); font-size: 15.5px; }

/* ---------- Verify links ---------- */
.verify-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 44px; }
.vlink {
  display: flex; flex-direction: column; gap: 8px; padding: 24px 26px;
  border: 1px solid var(--line); border-radius: 14px; background: var(--card);
  transition: border-color 0.25s, transform 0.25s var(--ease);
}
.vlink:hover { border-color: var(--blue); transform: translateY(-3px); }
.vlink-t { font-family: "Space Grotesk"; font-weight: 600; font-size: 17px; }
.vlink-s { font-family: "JetBrains Mono"; font-size: 13px; color: var(--accent); }

/* ---------- Vault box ---------- */
.vault-box { margin-top: 40px; }

/* ============================================================
   Final CTA
   ============================================================ */
.final { padding: 118px 0; text-align: center; background: radial-gradient(700px 320px at 50% 0%, rgba(0,88,248,0.12), transparent 65%); border-top: 1px solid var(--line); }
.final h2 { margin: 0 auto 30px; max-width: 720px; }
.final .cta { justify-content: center; }

/* ============================================================
   Footer  (no logo; "backed by firstdoor.app" at the very bottom)
   ============================================================ */
.footer { border-top: 1px solid var(--line); padding: 40px 0; background: var(--bg-alt); }
.footer-inner { display: flex; flex-direction: column; align-items: center; gap: 16px; text-align: center; }
.disclaimer { color: var(--faint); font-size: 12.5px; max-width: 460px; }
.footer-links { display: flex; gap: 22px; }
.footer-links a { color: var(--muted); font-size: 13.5px; transition: color 0.2s; }
.footer-links a:hover { color: var(--accent); }
.backed { color: var(--muted); font-size: 13px; font-family: "JetBrains Mono"; letter-spacing: 0.02em; }
.backed a { color: var(--accent); }

/* ============================================================
   Toast
   ============================================================ */
.toast {
  position: fixed; bottom: 26px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--toast-bg); border: 1px solid var(--blue); color: var(--text);
  padding: 11px 20px; border-radius: 999px; font-size: 14px; font-weight: 500;
  opacity: 0; pointer-events: none; transition: opacity 0.3s, transform 0.3s; z-index: 200;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.18);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ============================================================
   Reveal
   ============================================================ */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s var(--ease), transform 0.6s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 820px) {
  .nav-links {
    display: none; position: absolute; top: 72px; left: 0; right: 0; flex-direction: column; gap: 4px;
    background: var(--nav-bg); backdrop-filter: blur(16px); padding: 16px 26px; border-bottom: 1px solid var(--line);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 0; font-size: 17px; }
  .nav-toggle { display: flex; }

  .duo, .verify-links { grid-template-columns: 1fr; }
  .tiers { flex-direction: column; }
  .tier-arrow { transform: rotate(90deg); }
  .dsk { display: none; }
}

@media (max-width: 520px) {
  .block { padding: 72px 0; }
  .hero { padding: 128px 0 72px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}