/**
 * login.css - 登录页样式
 * 深蓝色渐变背景 + 居中卡片
 */

.login-container {
  width: 100%;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(24, 144, 255, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 80%, rgba(114, 46, 209, 0.15) 0%, transparent 50%),
    linear-gradient(135deg, #0a1628 0%, #0f1923 40%, #141e2e 100%);
  overflow: hidden;
}

/* 动态粒子背景 */
.login-particles {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  overflow: hidden;
  pointer-events: none;
}

.login-particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: rgba(24, 144, 255, 0.4);
  border-radius: 50%;
  animation: float linear infinite;
}

@keyframes float {
  0% {
    transform: translateY(100vh) translateX(0);
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    transform: translateY(-100px) translateX(100px);
    opacity: 0;
  }
}

/* 网格背景 */
.login-grid {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(rgba(24, 144, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(24, 144, 255, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
}

/* 登录卡片 */
.login-card {
  width: 420px;
  padding: 40px;
  background: rgba(26, 35, 50, 0.85);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.4),
    0 0 0 1px rgba(24, 144, 255, 0.1);
  position: relative;
  z-index: 10;
  animation: fadeIn 0.6s ease-out;
}

/* 顶部光效 */
.login-card::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  border-radius: 2px;
}

/* Logo区域 */
.login-logo {
  text-align: center;
  margin-bottom: 32px;
}

.login-logo-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, #1890ff 0%, #722ed1 100%);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(24, 144, 255, 0.3);
}

.login-logo-icon i {
  font-size: 28px;
  color: #fff;
}

.login-logo h1 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-inverse);
  margin-bottom: 6px;
  letter-spacing: 1px;
}

.login-logo p {
  font-size: 14px;
  color: var(--text-secondary);
}

/* 安全提示 */
.login-security-tip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-bottom: 24px;
  padding: 8px 16px;
  background: rgba(250, 173, 20, 0.08);
  border: 1px solid rgba(250, 173, 20, 0.2);
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: var(--warning);
}

.login-security-tip i {
  font-size: 14px;
}

/* 登录表单 */
.login-form {
  margin-bottom: 24px;
}

.login-form .form-group {
  margin-bottom: 20px;
}

.login-form .form-input {
  padding: 12px 16px;
  font-size: 15px;
  background: rgba(13, 21, 32, 0.6);
}

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

.input-icon-wrapper i {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 15px;
}

.input-icon-wrapper .form-input {
  padding-left: 42px;
}

/* 记住我 + 忘记密码 */
.login-options {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  font-size: 13px;
}

.remember-me {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  cursor: pointer;
}

.remember-me input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--primary);
  cursor: pointer;
}

.forgot-password {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}

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

/* 登录按钮 */
.login-btn {
  width: 100%;
  padding: 14px;
  font-size: 16px;
  font-weight: 600;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #1890ff 0%, #722ed1 100%);
  color: #fff;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  font-family: inherit;
}

.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 ease;
}

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

.login-btn:hover {
  box-shadow: 0 8px 24px rgba(24, 144, 255, 0.4);
  transform: translateY(-1px);
}

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

.login-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* 分隔线 */
.login-divider {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 24px 0;
  color: var(--text-muted);
  font-size: 12px;
}

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

/* 底部信息 */
.login-footer {
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.8;
}

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

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

/* 登录动画 */
.login-shake {
  animation: shake 0.5s ease-in-out;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-10px); }
  50% { transform: translateX(10px); }
  75% { transform: translateX(-10px); }
}

/* 响应式 */
@media (max-width: 480px) {
  .login-card {
    width: 90%;
    padding: 30px 20px;
  }

  .login-logo h1 {
    font-size: 20px;
  }
}