body {
  background: radial-gradient(circle at top right, var(--bg-sidebar) 0%, var(--bg-body) 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
  overflow-x: hidden;
}

.login-container {
  width: 100%;
  max-width: 450px;
  animation: fadeIn 0.8s ease-out;
}

.login-card {
  background: var(--bg-surface);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg), 0 0 40px rgba(16, 185, 129, 0.1);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

header img {
  width: 120px;
  margin-bottom: var(--spacing-md);
  filter: drop-shadow(0 4px 6px rgba(0,0,0,0.2));
}

header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: var(--spacing-xs);
  letter-spacing: -0.025em;
}

header p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.form-field label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-muted);
}

.input-wrapper {
  position: relative;
}

input {
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.875rem 1rem;
  border-radius: var(--radius-md);
  width: 100%;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

input:focus {
  background-color: rgba(255, 255, 255, 0.05);
  border-color: var(--primary-color);
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.15);
  transform: translateY(-1px);
}

.error-msg {
  color: var(--danger-color);
  font-size: 0.75rem;
  margin-top: 0.5rem;
  display: none;
  animation: slideIn 0.3s ease-out;
}

button.solid {
  width: 100%;
  margin-top: var(--spacing-md);
  padding: 1rem;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
  transition: all 0.3s ease;
}

button.solid:not(:disabled):hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 15px rgba(16, 185, 129, 0.3);
}

.footer-info {
  margin-top: var(--spacing-xl);
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  opacity: 0.7;
}

.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  display: inline-block;
  animation: spin 0.8s linear infinite;
  margin-right: 8px;
  vertical-align: middle;
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
  from { opacity: 0; transform: translateX(-10px); }
  to { opacity: 1; transform: translateX(0); }
}

@media (max-width: 480px) {
  .login-card {
    padding: var(--spacing-lg);
  }
}