:root {
  --bg: #04050a;
  --ink: #eef1fa;
  --muted: #8b93ad;
  --line: rgba(180, 195, 255, .14);
  --accent: #9bb4ff;
  --glow: rgba(120, 150, 255, .5);
  --font: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  overflow: hidden;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

#space { position: fixed; inset: 0; width: 100vw; height: 100vh; display: block; z-index: 0; }

.vignette {
  position: fixed; inset: 0; z-index: 1; pointer-events: none;
  background: radial-gradient(120% 90% at 50% 38%, transparent 52%, rgba(0, 0, 0, .58) 100%);
}

.stage {
  position: relative; z-index: 2; min-height: 100vh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding: 6vw;
}

.mark {
  position: fixed; top: 28px; left: 34px; z-index: 3;
  font-size: 13px; letter-spacing: .42em; font-weight: 500; color: var(--muted);
}

.title {
  font-size: clamp(42px, 8.4vw, 108px); font-weight: 300; letter-spacing: .14em; line-height: 1;
  opacity: 0; transform: translateY(14px);
  animation: rise 1.7s .2s cubic-bezier(.2, .7, .2, 1) forwards;
}
.tagline {
  margin-top: 28px; font-size: clamp(12px, 1.4vw, 15px); letter-spacing: .34em;
  text-transform: uppercase; color: var(--muted); font-weight: 400;
  opacity: 0; animation: fade 1.7s 1s ease forwards;
}
.enter { opacity: 0; animation: fade 1.6s .4s ease forwards; }
.enter a {
  display: inline-flex; align-items: center; gap: 14px; padding: 19px 46px;
  border: 1px solid var(--line); border-radius: 100px; color: var(--ink); text-decoration: none;
  font-size: 15px; letter-spacing: .32em; text-transform: uppercase;
  transition: .5s cubic-bezier(.2, .7, .2, 1); backdrop-filter: blur(6px);
}
.enter a:hover {
  border-color: transparent; background: rgba(120, 150, 255, .06); letter-spacing: .36em;
  box-shadow: 0 0 0 1px var(--glow), 0 0 36px var(--glow);
}
.enter a .arrow { transition: transform .5s cubic-bezier(.2, .7, .2, 1); }
.enter a:hover .arrow { transform: translateX(5px); }

.foot {
  position: fixed; bottom: 26px; left: 0; right: 0; z-index: 3; text-align: center;
  font-size: 11px; letter-spacing: .3em; text-transform: uppercase; color: rgba(139, 147, 173, .55);
  opacity: 0; animation: fade 2s .9s ease forwards;
}

/* ---- login ---- */
.center { position: relative; z-index: 2; min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 6vw; }
.panel {
  width: min(92vw, 400px); padding: 44px 38px; border: 1px solid var(--line); border-radius: 20px;
  background: rgba(10, 13, 24, .45); backdrop-filter: blur(16px) saturate(140%);
  box-shadow: 0 30px 80px rgba(0, 0, 0, .5);
  opacity: 0; transform: translateY(14px); animation: rise 1.2s .1s cubic-bezier(.2, .7, .2, 1) forwards;
}
.panel h1 { font-size: 21px; font-weight: 400; letter-spacing: .2em; text-transform: uppercase; text-align: center; }
.panel .sub { margin-top: 12px; text-align: center; color: var(--muted); font-size: 13px; letter-spacing: .06em; }
.field { margin-top: 32px; }
.field input {
  width: 100%; padding: 16px 18px; background: rgba(255, 255, 255, .03); border: 1px solid var(--line);
  border-radius: 12px; color: var(--ink); font-family: var(--font); font-size: 15px; letter-spacing: .12em;
  outline: none; transition: .4s; text-align: center;
}
.field input:focus {
  border-color: var(--accent); background: rgba(255, 255, 255, .05);
  box-shadow: 0 0 0 1px var(--glow), 0 0 26px rgba(120, 150, 255, .18);
}
.btn {
  margin-top: 18px; width: 100%; padding: 16px; border: none; border-radius: 12px; cursor: pointer;
  font-family: var(--font); font-size: 13px; letter-spacing: .3em; text-transform: uppercase; font-weight: 500;
  color: #0a0d18; background: linear-gradient(180deg, #cfe0ff, #9bb4ff); transition: .4s;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 0 34px var(--glow); }
.err {
  margin-top: 18px; text-align: center; font-size: 12px; letter-spacing: .18em; text-transform: uppercase;
  color: #ff8fa3; min-height: 14px; opacity: 0; transition: .3s;
}
.err.show { opacity: 1; }
.back {
  position: fixed; top: 30px; left: 34px; z-index: 3; color: var(--muted); text-decoration: none;
  font-size: 12px; letter-spacing: .28em; text-transform: uppercase;
}
.back:hover { color: var(--ink); }

@keyframes rise { to { opacity: 1; transform: translateY(0); } }
@keyframes fade { to { opacity: 1; } }
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; }
  .title, .tagline, .enter, .foot, .panel { opacity: 1 !important; transform: none !important; }
}