:root {
  --navy: #1a2b4a;
  --navy-dark: #0f1d36;
  --tan: #d99860;
  --tan-dark: #b87a45;
  --cream: #f5f0e6;
  --white: #ffffff;
  --text: #1a2b4a;
  --text-muted: #6b7a8f;
  --border: #e3dccf;
  --error: #b3261e;
  --success: #1f7a4d;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--cream);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: 0;
  border-radius: 10px;
  font-weight: 600;
  font-size: 16px;
  padding: 14px 20px;
  transition: transform 0.05s ease, background 0.15s ease, opacity 0.15s ease;
}
button:active { transform: translateY(1px); }
button:disabled { opacity: 0.55; cursor: not-allowed; }

.btn-primary {
  background: var(--tan);
  color: var(--white);
}
.btn-primary:hover:not(:disabled) { background: var(--tan-dark); }

.btn-secondary {
  background: var(--white);
  color: var(--navy);
  border: 1.5px solid var(--navy);
}
.btn-secondary:hover:not(:disabled) { background: var(--navy); color: var(--white); }

input {
  font-family: inherit;
  font-size: 16px;
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  background: var(--white);
  width: 100%;
}
input:focus { outline: 2px solid var(--tan); outline-offset: 1px; }

.card {
  background: var(--white);
  border-radius: 16px;
  padding: 28px;
  box-shadow: 0 4px 18px rgba(15, 29, 54, 0.08);
}

.brand-logo {
  width: 88px;
  height: 88px;
  border-radius: 18px;
  background: var(--navy);
  color: var(--cream);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 36px;
  letter-spacing: 1px;
  margin: 0 auto;
}