/**
 * Authentication Pages Common Styles
 * 로그인, 회원가입, 비밀번호 재설정 등 인증 관련 페이지 공통 스타일
 */

/* Import Base Styles */
@import './base.css';
@import './components.css';

/* Auth Container */
.auth-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 2rem 1rem;
}

.auth-card {
  background: white;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  width: 100%;
  max-width: 440px;
  padding: 3rem 2.5rem;
  animation: fadeInUp 0.5s ease-out;
}

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

.auth-header {
  text-align: center;
  margin-bottom: 2rem;
}

.auth-logo {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.auth-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: #1f2937;
  margin-bottom: 0.5rem;
}

.auth-subtitle {
  font-size: 0.95rem;
  color: #6b7280;
}

/* Form Styles */
.auth-form {
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: #374151;
  margin-bottom: 0.5rem;
}

.form-label.required::after {
  content: ' *';
  color: #dc3545;
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  transition: all 0.2s;
  background: #f9fafb;
}

.form-input:focus {
  outline: none;
  border-color: #667eea;
  background: white;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-input.error {
  border-color: #dc3545;
  background: #fff5f5;
}

.form-input.error:focus {
  box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
}

.form-input.success {
  border-color: #22c55e;
  background: #f0fdf4;
}

.form-input.success:focus {
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

.form-success {
  font-size: 0.8125rem;
  color: #22c55e;
  margin-top: 0.375rem;
}

.form-success.hidden {
  display: none;
}

/* Input with button (이메일 중복확인) */
.input-with-button {
  display: flex;
  gap: 0.5rem;
}

.input-with-button .form-input {
  flex: 1;
  min-width: 0;
}

.btn-check {
  flex-shrink: 0;
  padding: 0.625rem 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: #667eea;
  background: #f0f4ff;
  border: 2px solid #667eea;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.btn-check:hover {
  background: #667eea;
  color: white;
}

.btn-check:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Modal Overlay */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-box {
  background: white;
  border-radius: 16px;
  padding: 2rem;
  max-width: 400px;
  width: 90%;
  text-align: center;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  animation: slideUp 0.3s ease;
}

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

.modal-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #1f2937;
  margin: 0 0 1rem 0;
}

.modal-message {
  font-size: 0.9375rem;
  color: #6b7280;
  line-height: 1.6;
  margin: 0 0 1.5rem 0;
}

.modal-message strong {
  color: #374151;
}

.modal-buttons {
  display: flex;
  gap: 0.75rem;
}

.modal-btn {
  flex: 1;
  padding: 0.75rem 1rem;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.modal-btn-cancel {
  background: #f3f4f6;
  border: 1px solid #e5e7eb;
  color: #374151;
}

.modal-btn-cancel:hover {
  background: #e5e7eb;
}

.modal-btn-confirm {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  color: white;
}

.modal-btn-confirm:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.modal-btn-confirm:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.form-error {
  display: none;
  font-size: 0.8125rem;
  color: #dc3545;
  margin-top: 0.375rem;
}

.form-hint {
  font-size: 0.8125rem;
  color: #6b7280;
  margin-top: 0.375rem;
}

.password-strength {
  display: none;
  font-size: 0.8125rem;
  margin-top: 0.375rem;
}

/* Buttons */
.btn {
  width: 100%;
  padding: 0.875rem;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(102, 126, 234, 0.4);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-google {
  background: white;
  color: #1f2937;
  border: 2px solid #e5e7eb;
  margin-top: 1rem;
}

.btn-google:hover:not(:disabled) {
  background: #f9fafb;
  border-color: #d1d5db;
}

.btn-google img {
  width: 20px;
  height: 20px;
}

.btn-link {
  background: none;
  border: none;
  color: #667eea;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  padding: 0;
  text-decoration: none;
}

.btn-link:hover {
  text-decoration: underline;
}

/* Divider */
.divider {
  display: flex;
  align-items: center;
  text-align: center;
  margin: 1.5rem 0;
  color: #9ca3af;
  font-size: 0.875rem;
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid #e5e7eb;
}

.divider span {
  padding: 0 1rem;
}

/* Footer Links */
.auth-footer {
  text-align: center;
  margin-top: 1.5rem;
}

.auth-footer p {
  font-size: 0.875rem;
  color: #6b7280;
}

.auth-footer a {
  color: #667eea;
  text-decoration: none;
  font-weight: 600;
}

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

/* Toggle between Login/Signup */
.auth-toggle {
  text-align: center;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid #e5e7eb;
}

.auth-toggle p {
  font-size: 0.875rem;
  color: #6b7280;
  margin-bottom: 0.5rem;
}

/* Loading Spinner */
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 0.8s linear infinite;
}

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

/* Alert Messages */
.alert {
  padding: 0.875rem 1rem;
  border-radius: 8px;
  margin-bottom: 1.5rem;
  font-size: 0.875rem;
  animation: slideDown 0.3s ease-out;
}

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

.alert-success {
  background: #d1fae5;
  color: #065f46;
  border-left: 4px solid #10b981;
}

.alert-error {
  background: #fee2e2;
  color: #991b1b;
  border-left: 4px solid #dc3545;
}

.alert-info {
  background: #dbeafe;
  color: #1e40af;
  border-left: 4px solid #3b82f6;
}

.alert-warning {
  background: #fef3c7;
  color: #92400e;
  border-left: 4px solid #f59e0b;
}

/* Success/Verification States */
.success-state {
  text-align: center;
  padding: 2rem 0;
}

.success-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
}

.success-state h2 {
  font-size: 1.5rem;
  color: #1f2937;
  margin-bottom: 0.5rem;
}

.success-state p {
  color: #6b7280;
  margin-bottom: 1.5rem;
}

/* Responsive */
@media (max-width: 480px) {
  .auth-card {
    padding: 2rem 1.5rem;
  }

  .auth-title {
    font-size: 1.5rem;
  }
}

/* Hide by default */
.hidden {
  display: none !important;
}

/* Tab Navigation (for login/signup toggle) */
.tab-nav {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
  background: #f3f4f6;
  padding: 0.25rem;
  border-radius: 8px;
}

.tab-btn {
  flex: 1;
  padding: 0.625rem;
  background: transparent;
  border: none;
  border-radius: 6px;
  font-size: 0.9375rem;
  font-weight: 600;
  color: #6b7280;
  cursor: pointer;
  transition: all 0.2s;
}

.tab-btn.active {
  background: white;
  color: #667eea;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.tab-btn:hover:not(.active) {
  color: #374151;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}