:root {
  --bg: #0f1419;
  --card: #1a2230;
  --fg: #e6edf3;
  --muted: #8b98a9;
  --accent: #4f9cff;
  --accent-fg: #06121f;
  --error: #ff6b6b;
  --border: #2a3546;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(1200px 600px at 50% -10%, #1b2740, var(--bg));
  color: var(--fg);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  padding: 1.5rem;
}

.card {
  width: 100%;
  max-width: 360px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 2rem 1.75rem;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.brand img { display: block; }

h1 {
  font-size: 1.3rem;
  margin: 0;
  letter-spacing: 0.2px;
}

.sub {
  color: var(--muted);
  margin: 0.4rem 0 1.5rem;
}

form { display: flex; flex-direction: column; gap: 1rem; }

label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.85rem;
  color: var(--muted);
}

input {
  background: #0f1722;
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 0.65rem 0.75rem;
  color: var(--fg);
  font-size: 1rem;
}

input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(79, 156, 255, 0.2);
}

.error {
  color: var(--error);
  font-size: 0.9rem;
  margin: -0.25rem 0 0;
  min-height: 0;
}

.error:empty { display: none; }

button {
  background: var(--accent);
  color: var(--accent-fg);
  border: none;
  border-radius: 9px;
  padding: 0.7rem 1rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
}

button:hover { filter: brightness(1.07); }

button.secondary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--border);
  font-weight: 500;
}

.msg { margin: 0.5rem 0; }
.who { color: var(--muted); font-size: 0.9rem; margin: 0 0 1rem; }
.who:empty { display: none; }