:root {
  --void: #070707;
  --panel: #111;
  --lift: #1a1a1a;
  --ink: #f4f4f4;
  --mute: #8a8a8a;
  --line: #2a2a2a;
  --yes: #00e5a0;
  --pulse: #ff2d7a;
  --display: "Syne", system-ui, sans-serif;
  --body: "Figtree", system-ui, sans-serif;
}

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

body {
  min-height: 100dvh;
  font-family: var(--body);
  background:
    radial-gradient(ellipse 70% 50% at 80% 10%, rgba(0, 229, 160, 0.1), transparent 55%),
    radial-gradient(ellipse 50% 40% at 10% 90%, rgba(255, 45, 122, 0.07), transparent 50%),
    var(--void);
  color: var(--ink);
}

.auth-shell {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.25rem;
  gap: 1.5rem;
}

.logo {
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: 0.04em;
  color: var(--ink);
  text-decoration: none;
}
.logo span { color: var(--yes); }

.auth-card {
  width: min(100%, 400px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1.75rem;
}

.auth-card h1 {
  font-family: var(--display);
  font-size: 1.65rem;
  margin-bottom: 0.35rem;
}

.sub {
  color: var(--mute);
  font-size: 0.95rem;
  margin-bottom: 1.35rem;
}

label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--mute);
  margin-bottom: 0.9rem;
}

input {
  width: 100%;
  padding: 0.75rem 0.85rem;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--void);
  color: var(--ink);
  font-family: var(--body);
  font-size: 1rem;
}
input:focus {
  outline: 2px solid rgba(0, 229, 160, 0.45);
  border-color: var(--yes);
}

.btn {
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.85rem 1rem;
  border: none;
  border-radius: 999px;
  background: var(--yes);
  color: #04140e;
  font-family: var(--display);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
}
.btn:hover { filter: brightness(1.05); }

.error {
  color: var(--pulse);
  font-size: 0.88rem;
  margin: 0 0 0.75rem;
}

.switch {
  margin-top: 1.15rem;
  text-align: center;
  color: var(--mute);
  font-size: 0.9rem;
}
.switch a {
  color: var(--yes);
  font-weight: 600;
  text-decoration: none;
}