:root {
  --bg: #0b1218;
  --card: rgba(18, 28, 38, 0.92);
  --text: #edf3f8;
  --muted: #8fa3b5;
  --accent: #1f9e8a;
  --accent-hover: #27b39c;
  --danger: #e85a6b;
  --border: rgba(143, 163, 181, 0.18);
  --font: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background:
    radial-gradient(900px 480px at 15% -10%, rgba(31, 158, 138, 0.2), transparent 55%),
    radial-gradient(700px 400px at 90% 10%, rgba(47, 92, 140, 0.22), transparent 50%),
    linear-gradient(180deg, #0e1720, var(--bg));
  color: var(--text);
  font-family: var(--font);
  padding: 24px;
}

.card {
  width: min(400px, 94vw);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 24px 24px;
  box-shadow: 0 22px 56px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(12px);
}

.brand-row {
  display: flex;
  gap: 12px;
  align-items: center;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 11px;
  background: linear-gradient(145deg, rgba(31, 158, 138, 0.95), rgba(31, 158, 138, 0.35));
  border: 1px solid rgba(31, 158, 138, 0.45);
  position: relative;
  flex-shrink: 0;
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 11px;
  border-radius: 3px;
  border: 2px solid rgba(255, 255, 255, 0.85);
  border-right-color: transparent;
  border-bottom-color: transparent;
  transform: rotate(45deg);
}

.eyebrow {
  margin: 0 0 2px;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
}

h1 {
  margin: 0;
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.sub {
  margin: 14px 0 20px;
  color: var(--muted);
  font-size: 0.92rem;
}

.form { display: grid; gap: 10px; }
.hidden { display: none !important; }

input {
  width: 100%;
  min-height: 44px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0d151c;
  color: var(--text);
  padding: 0 12px;
  font: inherit;
}

input:focus {
  outline: none;
  border-color: rgba(31, 158, 138, 0.55);
  box-shadow: 0 0 0 3px rgba(31, 158, 138, 0.14);
}

.btn {
  min-height: 44px;
  border: 0;
  border-radius: 999px;
  background: var(--accent);
  color: #06221d;
  font-weight: 700;
  cursor: pointer;
  font: inherit;
}

.btn:hover { background: var(--accent-hover); }

.btn.secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
}

.hint {
  margin: 0 0 2px;
  color: var(--muted);
  font-size: 0.88rem;
}

.error {
  min-height: 1.2em;
  margin: 14px 0 0;
  color: var(--danger);
  font-size: 0.9rem;
}