:root {
  --primary: #0b1d3a;
  --primary-hover: #1a3a5c;
  --accent: #10783c;
  --accent-hover: #0d6331;
  --bg-page: #f8f7f5;
  --bg-card: #ffffff;
  --bg-input: #f2f1ee;
  --text-primary: #0b1d3a;
  --text-secondary: #5a6a7a;
  --text-muted: #8a96a4;
  --border-color: #e2e0dc;
  --error-red: #c0392b;
  --error-bg: #fdf2f2;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-page);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-container {
  width: 100%;
  max-width: 420px;
  padding: 20px;
}

.login-card {
  background: var(--bg-card);
  border-radius: 12px;
  padding: 40px;
  border: 1px solid var(--border-color);
  box-shadow: 0 1px 3px rgba(11, 29, 58, 0.04), 0 6px 20px rgba(11, 29, 58, 0.06);
}

.logo-section {
  text-align: center;
  margin-bottom: 32px;
}

.logo-section img {
  width: 48px;
  height: 48px;
  margin-bottom: 16px;
}

.logo-section h1 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--primary);
}

.logo-section p {
  color: var(--text-secondary);
  font-size: 14px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-group input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(11, 29, 58, 0.08);
}

.form-group input::placeholder {
  color: var(--text-muted);
}

.btn-primary {
  width: 100%;
  padding: 12px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

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

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.error-message {
  background: var(--error-bg);
  border: 1px solid rgba(192, 57, 43, 0.2);
  border-radius: 8px;
  padding: 12px 16px;
  margin-bottom: 20px;
  color: var(--error-red);
  font-size: 13px;
  display: none;
}

.error-message.visible {
  display: block;
}

.status-message {
  text-align: center;
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-secondary);
  display: none;
}

.status-message.visible {
  display: block;
}

.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--border-color);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-right: 8px;
  vertical-align: middle;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.footer {
  text-align: center;
  margin-top: 24px;
  font-size: 12px;
  color: var(--text-muted);
}

.footer a {
  color: var(--primary);
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

@media (max-width: 480px) {
  .login-card {
    padding: 28px 24px;
  }
}