/* auth.css — shared by login.html and register.html */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: #f0f2f5;
  color: #1a1a1a;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  background: #1a1a2e;
  color: white;
  padding: 1.25rem 2rem;
}

header h1 { font-size: 1.35rem; font-weight: 600; letter-spacing: 0.02em; }
header p  { font-size: 0.78rem; opacity: 0.55; margin-top: 0.25rem; }

main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
}

.card {
  background: white;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 8px rgba(0,0,0,0.04);
  padding: 2rem;
  width: 100%;
  max-width: 400px;
}

.card h2 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: #1a1a2e;
}

.field { margin-bottom: 1rem; }

.field label {
  display: block;
  font-size: 0.78rem;
  font-weight: 500;
  color: #444;
  margin-bottom: 0.35rem;
}

.field input {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 1px solid #d5d5d5;
  border-radius: 5px;
  font-size: 0.9rem;
  color: #1a1a1a;
  background: white;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.field input:focus {
  outline: none;
  border-color: #4a6fa5;
  box-shadow: 0 0 0 3px rgba(74,111,165,0.14);
}

.btn {
  width: 100%;
  padding: 0.7rem 1rem;
  background: #1a1a2e;
  color: white;
  border: none;
  border-radius: 5px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  margin-top: 0.5rem;
  transition: background 0.15s;
}

.btn:hover { background: #2d2d50; }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }

.message {
  padding: 0.7rem 1rem;
  border-radius: 5px;
  font-size: 0.85rem;
  margin-bottom: 1.25rem;
}

.message.error {
  background: #fff3f3;
  border: 1px solid #f0c0c0;
  color: #a52020;
}

.message.success {
  background: #f0fff4;
  border: 1px solid #b2dfdb;
  color: #2e7d32;
}

/* register.html only */
.hint {
  font-size: 0.75rem;
  color: #aaa;
  margin-top: 0.25rem;
}

.links {
  margin-top: 1.25rem;
  font-size: 0.83rem;
  color: #666;
  text-align: center;
}

.links a { color: #4a6fa5; text-decoration: none; }
.links a:hover { text-decoration: underline; }

@media (max-width: 820px) {
  header { padding: 0.9rem 1.25rem; }
}

@media (max-width: 480px) {
  header { padding: 0.7rem 1rem; }
  main { padding: 1rem; }
}