/* Global type + colors */
:root {
  --bg: #0f1115;
  --text: #e9eef7;
  --muted: #9fb0c3;
  --brand: #69e5ff;
  --brand-ink: #0b1927;
  --surface: #151924;
  --surface-2: #1b2130;
}

html, body {
  font-family: "Outfit", ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto,
               "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji",
               "Segoe UI Emoji", "Segoe UI Symbol";
  background: var(--bg);
  color: var(--text);
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3 { letter-spacing: 0.2px; }
h1 {
  font-weight: 800;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.05;
}
h2 { font-weight: 700; }
h3 { font-weight: 700; }

p {
  color: var(--muted);
  font-weight: 400;
}

/* Layout helpers */
.container {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

.center { text-align: center; }

/* Hero */
.hero {
  padding: 8rem 0 6rem;
  background:
    radial-gradient(1200px 600px at 50% -10%, rgba(105,229,255,0.18), transparent 60%),
    linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0));
}
.hero p {
  font-size: clamp(1rem, 1.6vw, 1.25rem);
  margin-top: 0.75rem;
}

/* --- NAV / HEADER --- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(130%) blur(8px);
  background: color-mix(in oklab, var(--bg) 82%, #ffffff 0%);
  border-bottom: 1px solid color-mix(in oklab, var(--surface) 80%, #fff 0%);
}

.site-header .bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  letter-spacing: 0.3px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}

/* Nav pills */
.site-nav a[data-nav] {
  display: inline-block;
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
  letter-spacing: 0.2px;
  padding: 0.56rem 0.9rem;
  border-radius: 999px;
  background: transparent;
  transition:
    transform 0.12s ease,
    background 0.2s ease,
    color 0.2s ease,
    box-shadow 0.2s ease;
  box-shadow:
    inset 0 0 0 1px color-mix(in oklab, var(--surface-2) 85%, #fff 0%);
}

.site-nav a[data-nav]:hover {
  transform: translateY(-1px);
  background: color-mix(in oklab, var(--surface-2) 70%, #fff 0%);
}

.site-nav a[data-nav].active {
  background: var(--brand);
  color: var(--brand-ink);
  box-shadow:
    0 6px 14px rgba(105,229,255,0.22),
    inset 0 0 0 1px rgba(11,25,39,0.08);
}

/* Auth visibility toggles (default) */
[data-when="signed-in"]  { display: none; }
[data-when="signed-out"] { display: inline-block; }

/* Greeting in header */
.nav-greeting {
  margin-left: 0.75rem;
  margin-right: 0.25rem;
  font-weight: 600;
  letter-spacing: 0.2px;
  color: #cfd8e3;
}

/* Shared nav button style (login/logout) */
.nav-btn {
  padding: 0.45rem 0.95rem;
  border-radius: 999px;
  border: 1px solid #3b3f46;
  background: #2c2f34;
  color: #e8eef9;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  transition:
    background 0.18s ease,
    border-color 0.18s ease,
    transform 0.12s ease,
    box-shadow 0.18s ease;
}

.nav-btn:hover {
  background: #3a3f46;
  border-color: #5b616b;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.5);
}

/* Login CTA */
.nav-btn.cta {
  background: linear-gradient(180deg, #7bf0ff, #55e1ff);
  border-color: #55e1ff;
  color: var(--brand-ink);
  font-weight: 700;
}

.nav-btn.cta:hover {
  transform: translateY(-1px) scale(1.01);
  box-shadow: 0 8px 18px rgba(85, 225, 255, 0.45);
}

/* Logout button spacing */
.nav-btn.logout {
  margin-left: 0.4rem;
}