/**
 * Login Page Styles - Dark Mode Professional
 * ヨシケイ大宮 LP分析ダッシュボード
 */

/* ========================================
   Login Container
   ======================================== */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0a0e27 0%, #151a2d 50%, #0a0e27 100%);
  padding: var(--spacing-lg);
  position: relative;
  overflow: hidden;
}

/* Background Animation */
.login-container::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
  animation: rotateBackground 30s linear infinite;
}

@keyframes rotateBackground {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* ========================================
   Login Box
   ======================================== */
.login-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  width: 100%;
  max-width: 440px;
  box-shadow: var(--shadow-xl);
  position: relative;
  z-index: 1;
  animation: slideInUp 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========================================
   Login Header
   ======================================== */
.login-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.login-logo {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-md);
  background: var(--gradient-accent);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  box-shadow: 0 8px 16px rgba(59, 130, 246, 0.4);
}

.login-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
  letter-spacing: -0.02em;
}

.login-subtitle {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
}

/* ========================================
   Login Form
   ======================================== */
.login-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--text-secondary);
}

.form-input {
  padding: 0.875rem 1rem;
  font-size: var(--text-base);
  color: var(--text-primary);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.form-input:focus {
  outline: none;
  border-color: var(--accent-primary);
  background: var(--bg-secondary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

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

/* ========================================
   Login Button
   ======================================== */
.login-button {
  padding: 0.875rem 1.5rem;
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: #ffffff;
  background: var(--gradient-accent);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
  margin-top: var(--spacing-md);
}

.login-button:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(59, 130, 246, 0.5);
}

.login-button:active:not(:disabled) {
  transform: translateY(0);
}

.login-button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ========================================
   Alert Messages
   ======================================== */
.alert {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  animation: fadeInDown 0.3s ease;
}

.alert-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--error);
}

.alert-success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--success);
}

.alert-icon {
  font-size: 20px;
  flex-shrink: 0;
}

/* ========================================
   Login Footer
   ======================================== */
.login-footer {
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-primary);
  text-align: center;
}

.login-footer-text {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
}

/* ========================================
   Loading State
   ======================================== */
.login-button.loading {
  position: relative;
  color: transparent;
  pointer-events: none;
}

.login-button.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top-color: #ffffff;
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

/* ========================================
   Password Toggle
   ======================================== */
.password-wrapper {
  position: relative;
}

.password-toggle {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
}

.password-toggle:hover {
  color: var(--text-primary);
  background: var(--bg-secondary);
}

.password-toggle .material-symbols-outlined {
  font-size: 20px;
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 480px) {
  .login-box {
    padding: var(--spacing-lg);
  }

  .login-title {
    font-size: var(--text-xl);
  }
}