*{margin:0;padding:0;box-sizing:border-box;}
:root{--primary:#3498db;--primary-dark:#2980b9;--secondary:#2ecc71;--warning:#f39c12;--danger:#e74c3c;--dark:#2c3e50;--light:#ecf0f1;--gray:#95a5a6;--border:#e0e6ed;--card-shadow:0 12px 30px rgba(0,0,0,0.08);}
body{font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif;background:linear-gradient(135deg,#e3f2fd,#f8f9fa);color:#343a40;line-height:1.6;min-height:100vh;padding:20px;background-size:400% 400%;animation:gradientBG 15s ease infinite;display:flex;justify-content:center;align-items:center;}
@keyframes gradientBG{
	0%,100%{background-position:0% 50%;}
	50%{background-position:100% 50%;}
}
.container{width:100%;max-width:1200px;margin:0 auto;display:grid;gap:25px;}

/* 登录页面样式 */
.auth-container{max-width:500px;margin:0 auto;width:100%;}
.login-header{text-align:center;margin-bottom:30px;}
.login-header h2{color:var(--dark);font-size:36px;margin-bottom:10px;background:linear-gradient(to right,var(--primary),var(--primary-dark));-webkit-background-clip:text;background-clip:text;color:transparent;}
.login-header p{color:var(--gray);font-size:18px;}
.card{background:rgba(255,255,255,0.92);border-radius:16px;box-shadow:var(--card-shadow);padding:30px;margin-bottom:25px;transition:all 0.3s ease;backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,0.18);}
.card:hover{transform:translateY(-5px);box-shadow:0 15px 35px rgba(0,0,0,0.15);}
.form-group{margin-bottom:20px;position:relative;}
.form-group label{display:block;margin-bottom:8px;font-weight:600;color:var(--dark);}
.form-control{width:100%;padding:14px 14px 14px 48px;border:2px solid var(--border);border-radius:12px;font-size:16px;transition:all 0.3s;}
.form-control:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 3px rgba(52,152,219,0.2);}
.input-icon{position:absolute;left:15px;top:40px;color:var(--primary);font-size:20px;}
.btn{padding:14px 28px;border-radius:12px;font-size:16px;font-weight:600;cursor:pointer;transition:all 0.3s;border:none;box-shadow:0 4px 12px rgba(0,0,0,0.12);display:inline-flex;align-items:center;justify-content:center;gap:10px;}
.btn-primary{background:linear-gradient(to right,var(--primary),var(--primary-dark));color:white;}
.btn-block{width:100%;}
.btn:hover{transform:translateY(-3px);box-shadow:0 8px 20px rgba(0,0,0,0.15);opacity:0.95;}
.auth-footer{text-align:center;margin-top:25px;color:var(--gray);}
.auth-footer a{color:var(--primary);text-decoration:none;font-weight:600;transition:all 0.3s;}
.auth-footer a:hover{text-decoration:underline;}
.remember-forgot{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;}
.remember{display:flex;align-items:center;gap:8px;}
.error-message{color:var(--danger);text-align:center;padding:10px;margin-bottom:15px;border-radius:8px;background-color:rgba(231,76,60,0.1);}

/* 响应式设计 */
@media (max-width:768px){
	.flex-container{flex-direction:column;}
	.container{grid-template-columns:1fr;}
	.auth-container{padding:15px;}
}

/* 动画效果 */
@keyframes fadeIn{
	from{opacity:0;transform:translateY(20px);}
	to{opacity:1;transform:translateY(0);}
}
.fade-in{animation:fadeIn 0.6s ease-out forwards;}