/**
 * 停车宝 - 现代化登录页面样式
 * Modern Login Page Styles
 * 
 * 特点：
 * - 全屏动态渐变背景
 * - 玻璃拟态登录卡片
 * - 浮动动画元素
 * - 响应式设计
 */

/* ============================================
   1. 登录页面基础
   ============================================ */

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: var(--space-6);
}

/* ============================================
   2. 动态背景
   ============================================ */

.login-bg {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at 20% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(6, 182, 212, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(79, 70, 229, 0.1) 0%, transparent 70%),
    linear-gradient(135deg, #0f172a 0%, #1a1f3a 30%, #0f172a 70%, #1e1b4b 100%);
  z-index: -2;
}

/* 动态网格背景 */
.login-grid {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: -1;
}

/* 浮动装饰球 */
.login-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  z-index: -1;
  animation: float 8s ease-in-out infinite;
}

.login-orb-1 {
  width: 400px;
  height: 400px;
  background: linear-gradient(135deg, var(--primary-600), var(--primary-800));
  top: -100px;
  right: -100px;
  animation-delay: 0s;
}

.login-orb-2 {
  width: 300px;
  height: 300px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--primary-600));
  bottom: -50px;
  left: -50px;
  animation-delay: -4s;
}

.login-orb-3 {
  width: 200px;
  height: 200px;
  background: linear-gradient(135deg, var(--primary-400), var(--accent-cyan));
  top: 50%;
  left: 20%;
  animation-delay: -2s;
  opacity: 0.2;
}

/* ============================================
   3. 登录容器 - 左右布局
   ============================================ */

.login-container {
  display: grid;
  grid-template-columns: 1fr 480px;
  max-width: 1200px;
  width: 100%;
  min-height: 600px;
  background: var(--bg-card);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  box-shadow: 
    0 25px 50px -12px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.05),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.1);
  overflow: hidden;
  animation: fadeInUp 0.6s ease-out;
}

/* ============================================
   4. 左侧品牌区域
   ============================================ */

.login-brand-section {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: var(--space-12);
  background: linear-gradient(135deg, 
    rgba(99, 102, 241, 0.1) 0%, 
    rgba(6, 182, 212, 0.05) 50%,
    rgba(79, 70, 229, 0.1) 100%
  );
  border-right: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
}

.login-brand-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 30% 70%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 70% 30%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
}

.login-brand-content {
  position: relative;
  z-index: 1;
}

.login-logo {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-10);
}

.login-logo-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--primary-500), var(--accent-cyan));
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-3xl);
  color: white;
  box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4);
}

.login-logo-text {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.login-headline {
  font-size: var(--text-5xl);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--space-6);
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-300) 50%, var(--accent-cyan-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.login-subheadline {
  font-size: var(--text-xl);
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 400px;
}

.login-features {
  margin-top: var(--space-10);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.login-feature-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--text-secondary);
  font-size: var(--text-base);
}

.login-feature-icon {
  width: 24px;
  height: 24px;
  background: rgba(99, 102, 241, 0.15);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-400);
  font-size: var(--text-sm);
}

/* ============================================
   5. 右侧登录表单区域
   ============================================ */

.login-form-section {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-10) var(--space-12);
  position: relative;
}

.login-form-header {
  margin-bottom: var(--space-8);
}

.login-form-title {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.login-form-subtitle {
  font-size: var(--text-base);
  color: var(--text-muted);
}

/* ============================================
   6. 登录表单样式
   ============================================ */

.login-form .form-group {
  margin-bottom: var(--space-6);
}

.login-form .form-label {
  display: block;
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: 500;
  margin-bottom: var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.login-form .form-control {
  width: 100%;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  padding: var(--space-4) var(--space-5);
  font-size: var(--text-base);
  transition: all var(--transition-normal);
}

.login-form .form-control:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-color-hover);
}

.login-form .form-control:focus {
  outline: none;
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--primary-500);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15);
}

.login-form .form-control::placeholder {
  color: var(--text-muted);
}

/* 输入框图标 */
.login-input-wrapper {
  position: relative;
}

.login-input-icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: var(--text-lg);
  transition: color var(--transition-fast);
}

.login-input-wrapper .form-control {
  padding-left: var(--space-12);
}

.login-input-wrapper .form-control:focus + .login-input-icon,
.login-input-wrapper .form-control:not(:placeholder-shown) + .login-input-icon {
  color: var(--primary-400);
}

/* 密码显示切换 */
.login-password-toggle {
  position: absolute;
  right: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: var(--space-2);
  font-size: var(--text-lg);
  transition: color var(--transition-fast);
}

.login-password-toggle:hover {
  color: var(--text-primary);
}

/* 记住我和忘记密码 */
.login-form-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-6);
}

.login-remember {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
}

.login-remember input[type="checkbox"] {
  width: 18px;
  height: 18px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: transparent;
  cursor: pointer;
  accent-color: var(--primary-500);
}

.login-remember label {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  cursor: pointer;
}

.login-forgot {
  color: var(--primary-400);
  font-size: var(--text-sm);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.login-forgot:hover {
  color: var(--primary-300);
  text-decoration: underline;
}

/* 登录按钮 */
.login-btn {
  width: 100%;
  padding: var(--space-4) var(--space-6);
  background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
  border: none;
  border-radius: var(--radius-lg);
  color: white;
  font-size: var(--text-base);
  font-weight: 600;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.4);
}

.login-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.login-btn:hover {
  background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
  box-shadow: 0 6px 20px rgba(79, 70, 229, 0.5);
  transform: translateY(-2px);
}

.login-btn:hover::before {
  left: 100%;
}

.login-btn:active {
  transform: translateY(0);
}

/* 错误提示 */
.login-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-bottom: var(--space-6);
  color: var(--danger-light);
  font-size: var(--text-sm);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* 页脚 */
.login-footer {
  margin-top: var(--space-8);
  text-align: center;
  color: var(--text-muted);
  font-size: var(--text-xs);
}

.login-footer a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.login-footer a:hover {
  color: var(--primary-400);
}

/* ============================================
   7. 响应式设计
   ============================================ */

@media (max-width: 1024px) {
  .login-container {
    grid-template-columns: 1fr;
    max-width: 480px;
  }
  
  .login-brand-section {
    display: none;
  }
  
  .login-form-section {
    padding: var(--space-8) var(--space-6);
  }
}

@media (max-width: 480px) {
  .login-page {
    padding: var(--space-4);
    background: var(--neutral-950);
  }
  
  .login-bg,
  .login-grid,
  .login-orb {
    display: none;
  }
  
  .login-container {
    border: none;
    box-shadow: none;
    background: transparent;
    backdrop-filter: none;
  }
  
  .login-form-section {
    padding: var(--space-6);
  }
  
  .login-form-title {
    font-size: var(--text-2xl);
  }
}

/* ============================================
   8. 加载动画
   ============================================ */

.login-btn.loading {
  pointer-events: none;
  opacity: 0.8;
}

.login-btn.loading::after {
  content: '';
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-left: var(--space-2);
}

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

/* ============================================
   9. 装饰元素
   ============================================ */

.login-decoration {
  position: absolute;
  pointer-events: none;
}

.login-decoration-dots {
  top: 40px;
  right: 40px;
  width: 100px;
  height: 100px;
  background-image: radial-gradient(circle, var(--primary-500) 1px, transparent 1px);
  background-size: 12px 12px;
  opacity: 0.3;
}

.login-decoration-ring {
  bottom: 60px;
  left: -30px;
  width: 120px;
  height: 120px;
  border: 2px solid var(--primary-500);
  border-radius: 50%;
  opacity: 0.2;
}