/* TechLedger.ai — Subscriber Download Portal
   Typography: DM Serif Display + DM Sans
   Palette: dark ink / slate / dark green accent
*/

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --ink: #0f1117;
  --slate: #2c3147;
  --mid: #5a617a;
  --muted: #9299b0;
  --rule: #dde1ed;
  --bg: #f5f6fa;
  --white: #ffffff;
  --green: #1a5c3a;
  --green-glow: #2a8c5a;
  --green-light: #e6f4ee;
  --red-soft: #b03030;

  --font-display: 'DM Serif Display', 'Georgia', serif;
  --font-body: 'DM Sans', 'Helvetica Neue', sans-serif;

  --radius: 6px;
  --radius-lg: 10px;
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10);

  --page-max: 1140px;
  --nav-height: 64px;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h2 { font-size: 1.75rem; margin-bottom: 0.75rem; }

p { max-width: 65ch; }

a { color: var(--green); text-decoration: none; }
a:hover { color: var(--green-glow); }

.muted { color: var(--mid); font-size: 0.95rem; }
.hidden { display: none !important; }

/* Layout */
.container {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 4rem 0;
  flex: 1;
}

main { flex: 1; }

/* Nav */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  background: rgba(15, 17, 23, 0.97);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  z-index: 1000;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.nav__inner {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav__logo {
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--white);
  letter-spacing: -0.02em;
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.nav__logo:hover { color: var(--white); }

.nav__logo .tld { color: var(--green-glow); }

.nav__tag {
  font-family: var(--font-body);
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-left: 1px solid #3a3f55;
  padding-left: 0.6rem;
  display: none;
}

@media (min-width: 768px) {
  .nav__tag { display: inline; }
}

.nav__user {
  display: flex;
  align-items: center;
}

/* Push content below fixed nav */
main { padding-top: var(--nav-height); }

/* Card (mirrors techledger-site .card) */
.card {
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  padding: 2rem;
  max-width: 560px;
  margin: 0 auto;
}

.card h2 { color: var(--slate); }

.actions {
  margin-top: 1.5rem;
  display: flex;
  gap: 0.75rem;
}

/* Button (mirrors techledger-site .btn--primary) */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.7rem 1.6rem;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  text-decoration: none;
}

.btn--primary {
  background: var(--green);
  color: var(--white);
}

.btn--primary:hover:not(:disabled) {
  background: var(--green-glow);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

/* Version info */
#version-info {
  margin-top: 1rem;
  line-height: 1.8;
}

#version-info .label {
  color: var(--mid);
  margin-right: 0.4rem;
}

#version-info .value {
  color: var(--ink);
  font-weight: 500;
}

/* Status line */
.status {
  margin-top: 1rem;
  font-size: 0.9rem;
  min-height: 1.2em;
}

.status.error { color: var(--red-soft); }
.status.success { color: var(--green); }

/* Sign-in mount spacing */
#sign-in-mount {
  margin-top: 1rem;
}

/* Footer */
.site-footer {
  background: var(--ink);
  color: var(--muted);
  padding: 1.25rem 0;
  font-size: 0.8rem;
  text-align: center;
  margin-top: auto;
}

.site-footer .muted { color: var(--muted); font-size: 0.8rem; }