:root {
  --bg: #f0f4f3;
  --bg-accent: #dce8e4;
  --surface: #ffffff;
  --ink: #1a2e2a;
  --muted: #5a6f6a;
  --accent: #0d6e5f;
  --accent-hover: #0a574c;
  --border: #c5d4cf;
  --danger: #9b2c2c;
  --danger-bg: #fde8e8;
  --radius: 12px;
  --shadow: 0 8px 32px rgba(26, 46, 42, 0.08);
  --font: "Segoe UI", "Helvetica Neue", system-ui, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, #b8ddd4 0%, transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 0%, #c5d9e8 0%, transparent 50%),
    var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.card {
  width: 100%;
  max-width: 440px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2rem;
}

.brand {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  margin: 0 0 0.5rem;
}

h1 {
  margin: 0 0 0.35rem;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.subtitle {
  margin: 0 0 1.75rem;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.45;
}

.field {
  margin-bottom: 1.15rem;
}

.field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--ink);
}

.field input {
  width: 100%;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  color: var(--ink);
  background: #fafcfb;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.field input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(13, 110, 95, 0.15);
  background: #fff;
}

.row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  margin-top: 0.5rem;
  padding: 0.85rem 1.25rem;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
}

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

.btn:active {
  transform: scale(0.98);
}

.btn-ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
  margin-top: 0.75rem;
  font-weight: 500;
  font-size: 0.9rem;
}

.btn-ghost:hover {
  background: var(--bg);
  color: var(--ink);
}

.alert {
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
}

.alert-error {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid #f5c2c2;
}

.meta {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.5;
}

.meta strong {
  color: var(--ink);
  font-weight: 600;
}

@media (max-width: 480px) {
  .row {
    grid-template-columns: 1fr;
  }

  .card {
    padding: 1.5rem;
  }
}