/**
 * 认证页面通用样式
 * 登录、注册、找回密码页面共用
 */

.auth-page {
  min-height: 100vh;
  padding-top: var(--navbar-height);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #F5F1EB 0%, #EDE5D8 100%);
  position: relative;
  overflow: hidden;
}

.auth-page::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(196, 167, 125, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.auth-page::after {
  content: '';
  position: absolute;
  bottom: -200px;
  left: -200px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(139, 111, 71, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.auth-container {
  width: 100%;
  max-width: 1000px;
  margin: var(--spacing-xl) auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--text-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  position: relative;
  z-index: 1;
}

/* ============== 左侧装饰区 ============== */
.auth-side {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  padding: var(--spacing-3xl);
  color: var(--text-white);
  position: relative;
  overflow: hidden;
}

.side-content {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.side-logo {
  font-size: 64px;
  margin-bottom: var(--spacing-xl);
  animation: floatLogo 4s ease-in-out infinite;
}

@keyframes floatLogo {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.side-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.side-desc {
  font-size: var(--font-size-base);
  opacity: 0.9;
  line-height: 1.8;
  margin-bottom: var(--spacing-2xl);
}

.side-features {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.side-feature {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  opacity: 0.9;
}

.feature-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  font-size: 12px;
}

/* 装饰圆圈 */
.side-decoration {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
}

.deco-circle {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
}

.deco-1 {
  width: 200px;
  height: 200px;
  top: -50px;
  right: -50px;
  animation: floatDeco 8s ease-in-out infinite;
}

.deco-2 {
  width: 150px;
  height: 150px;
  bottom: 30%;
  left: -30px;
  animation: floatDeco 10s ease-in-out infinite;
  animation-delay: -3s;
}

.deco-3 {
  width: 100px;
  height: 100px;
  bottom: 50px;
  right: 30%;
  animation: floatDeco 6s ease-in-out infinite;
  animation-delay: -5s;
}

@keyframes floatDeco {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(20px, -20px); }
}

/* ============== 右侧表单区 ============== */
.auth-form-wrapper {
  padding: var(--spacing-3xl);
  display: flex;
  align-items: center;
  justify-content: center;
}

.auth-form-container {
  width: 100%;
  max-width: 380px;
}

.auth-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.auth-subtitle {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-2xl);
}

.auth-subtitle a {
  color: var(--primary);
  font-weight: 500;
}

/* ============== 登录方式切换 ============== */
.login-tabs {
  position: relative;
  display: flex;
  margin-bottom: var(--spacing-2xl);
  border-bottom: 1px solid var(--border-light);
}

.login-tab {
  flex: 1;
  padding: var(--spacing-md) 0;
  text-align: center;
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  cursor: pointer;
  transition: color var(--transition-fast);
  position: relative;
  z-index: 1;
}

.login-tab.active {
  color: var(--primary);
  font-weight: 600;
}

.tab-indicator {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 50%;
  height: 2px;
  background: var(--primary);
  transition: transform var(--transition-base);
}

.tab-indicator.right {
  transform: translateX(100%);
}

/* ============== 表单 ============== */
.auth-form {
  display: none;
}

.auth-form.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

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

.password-input-wrapper {
  position: relative;
}

.password-toggle {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  padding: 8px;
  font-size: var(--font-size-sm);
  opacity: 0.6;
  transition: opacity var(--transition-fast);
}

.password-toggle:hover {
  opacity: 1;
}

.form-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-sm);
}

/* 自定义复选框 */
.checkbox-wrapper {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
  user-select: none;
}

.checkbox-wrapper input[type="checkbox"] {
  display: none;
}

.checkbox-custom {
  width: 18px;
  height: 18px;
  border: 2px solid var(--border-medium);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.checkbox-wrapper input[type="checkbox"]:checked + .checkbox-custom {
  background: var(--primary);
  border-color: var(--primary);
}

.checkbox-wrapper input[type="checkbox"]:checked + .checkbox-custom::after {
  content: '✓';
  color: var(--text-white);
  font-size: 12px;
  font-weight: bold;
}

.checkbox-label {
  color: var(--text-secondary);
}

.forgot-link {
  color: var(--primary);
  font-weight: 500;
}

.form-tip {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  margin-bottom: var(--spacing-lg);
}

/* ============== 第三方登录 ============== */
.third-party {
  margin-top: var(--spacing-2xl);
}

.divider {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-light);
}

.divider span {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.third-party-btns {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
}

.third-party-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
}

.third-party-btn:hover {
  background: var(--bg-light);
  color: var(--primary);
}

.third-party-btn .btn-icon {
  font-size: 28px;
}

/* ============== 密码强度指示器 ============== */
.password-strength {
  margin-top: var(--spacing-sm);
}

.strength-bar {
  width: 100%;
  height: 4px;
  background: var(--bg-gray);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: var(--spacing-xs);
}

.strength-fill {
  width: 0;
  height: 100%;
  background: var(--border-medium);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.strength-fill.weak {
  width: 33%;
  background: var(--error);
}

.strength-fill.medium {
  width: 66%;
  background: var(--warning);
}

.strength-fill.strong {
  width: 100%;
  background: var(--success);
}

.strength-text {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.strength-text.weak {
  color: var(--error);
}

.strength-text.medium {
  color: var(--warning);
}

.strength-text.strong {
  color: var(--success);
}

/* ============== 步骤指示器 ============== */
.steps-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-2xl);
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
}

.step-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg-gray);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: 600;
  transition: all var(--transition-base);
}

.step.active .step-number {
  background: var(--primary);
  color: var(--text-white);
}

.step.completed .step-number {
  background: var(--success);
  color: var(--text-white);
}

.step-label {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  white-space: nowrap;
  transition: color var(--transition-base);
}

.step.active .step-label {
  color: var(--primary);
  font-weight: 500;
}

.step-line {
  width: 60px;
  height: 2px;
  background: var(--border-light);
  margin: 0 var(--spacing-sm);
  margin-bottom: 20px;
  transition: background var(--transition-base);
}

.step-line.completed {
  background: var(--success);
}

/* 步骤内容 */
.step-content {
  display: none;
}

.step-content.active {
  display: block;
  animation: fadeIn 0.4s ease;
}

/* 成功页面 */
.success-container {
  text-align: center;
  padding: var(--spacing-xl) 0;
}

.success-icon {
  font-size: 72px;
  margin-bottom: var(--spacing-lg);
  animation: successPop 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes successPop {
  0% {
    transform: scale(0);
    opacity: 0;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

/* ============== 响应式 ============== */
@media (max-width: 768px) {
  .auth-container {
    grid-template-columns: 1fr;
    max-width: 420px;
    margin: var(--spacing-lg);
  }

  .auth-side {
    display: none;
  }

  .auth-form-wrapper {
    padding: var(--spacing-2xl);
  }
}

@media (max-width: 480px) {
  .auth-form-wrapper {
    padding: var(--spacing-xl) var(--spacing-lg);
  }

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