:root {
  --bg: #0a0a0b;
  --panel: rgba(18, 18, 20, 0.86);
  --ink: #f6f4ee;
  --muted: rgba(246, 244, 238, 0.58);
  --faint: rgba(246, 244, 238, 0.36);
  --line: rgba(246, 244, 238, 0.12);
  --gold: #f0c01a;
  --gold-hot: #fce430;
  --gold-deep: #be760f;
  --on-gold: #14100a;
  --red: #f87171;
  --font: "Manrope", system-ui, sans-serif;
  color-scheme: dark;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body {
  min-height: 100vh;
  background: #0a0a0b;
  color: var(--ink);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--gold); text-decoration: none; font-weight: 600; }
a:hover { color: var(--gold-hot); }
button { font: inherit; }

.stage {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  background:
    radial-gradient(ellipse 75% 55% at 85% 0%, rgba(240, 192, 26, 0.22), transparent 58%),
    radial-gradient(ellipse 50% 40% at 5% 95%, rgba(201, 146, 10, 0.14), transparent 55%),
    radial-gradient(ellipse 60% 45% at 50% 50%, rgba(240, 192, 26, 0.05), transparent 70%),
    linear-gradient(165deg, #0c0c0e 0%, #0a0a0b 50%, #080808 100%);
}
.stage-grid {
  position: absolute;
  inset: 0;
  opacity: 0.28;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 55% at 50% 30%, #000 15%, transparent 70%);
}
.stage-bolt {
  position: absolute;
  right: -6%;
  bottom: -8%;
  width: min(72vw, 540px);
  opacity: 0.2;
  filter: drop-shadow(0 0 60px rgba(240, 192, 26, 0.35));
  animation: breathe 7s ease-in-out infinite;
}
@keyframes breathe {
  0%, 100% { opacity: 0.16; transform: scale(1); }
  50% { opacity: 0.26; transform: scale(1.035); }
}

.wrap {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.35rem;
}

.card {
  width: min(420px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 1.85rem 1.45rem 1.5rem;
  backdrop-filter: blur(16px);
  box-shadow: 0 8px 32px -12px rgba(0, 0, 0, 0.55);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 1.25rem;
  color: var(--ink);
  font-weight: 800;
  font-size: 1.15rem;
  text-decoration: none;
}
.brand img { width: 34px; height: 34px; border-radius: 8px; object-fit: contain; }
.brand span span { color: var(--gold); }

h1 {
  font-size: 1.55rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 0.35rem;
}
.sub {
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 1.15rem;
  line-height: 1.45;
}

.field { margin-bottom: 0.85rem; }
label {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 0.35rem;
}
.input {
  width: 100%;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--ink);
  border-radius: 12px;
  padding: 0.85rem 0.95rem;
  font-size: 1rem;
  outline: none;
}
.input:focus { border-color: color-mix(in srgb, var(--gold) 55%, var(--line)); }

.err {
  display: none;
  margin-bottom: 0.85rem;
  padding: 0.7rem 0.85rem;
  border-radius: 12px;
  background: rgba(248, 113, 113, 0.12);
  color: var(--red);
  font-size: 0.9rem;
  font-weight: 600;
}
.err.show { display: block; }

.btn {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  margin-top: 0.35rem;
  border: 0;
  border-radius: 12px;
  cursor: pointer;
  font-weight: 700;
  font-size: 1rem;
  color: var(--on-gold);
  background: linear-gradient(165deg, var(--gold-hot) 0%, var(--gold) 45%, var(--gold-deep) 100%);
  box-shadow: 0 14px 36px -12px rgba(190, 118, 15, 0.42), inset 0 1px 0 rgba(255, 255, 255, 0.28);
  transition: transform 0.15s ease, filter 0.15s ease;
}
.btn:hover:not(:disabled) { transform: translateY(-1px); filter: brightness(1.04); }
.btn:disabled { opacity: 0.6; cursor: wait; }

.linkish {
  display: block;
  width: 100%;
  margin-top: 0.85rem;
  border: 0;
  background: none;
  color: var(--muted);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  text-align: center;
}
.linkish:hover { color: var(--gold); }

.foot {
  margin-top: 1.15rem;
  text-align: center;
  font-size: 0.88rem;
  color: var(--muted);
}
.foot + .foot { margin-top: 0.45rem; }

.theme-mini { display: none !important; }

#toast {
  position: fixed;
  left: 50%;
  bottom: 1.4rem;
  transform: translateX(-50%) translateY(20px);
  z-index: 20;
  padding: 0.7rem 1rem;
  border-radius: 999px;
  background: var(--ink);
  color: var(--bg);
  font-weight: 700;
  font-size: 0.9rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
#toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .stage-bolt, .btn { animation: none !important; transition: none !important; }
}