*{margin:0;padding:0;box-sizing:border-box}body{background:linear-gradient(135deg,#1e3a8a 0,#3b82f6 50%,#60a5fa 100%);font-family:'Segoe UI','PingFang SC','Hiragino Sans GB',Arial,sans-serif;min-height:100vh;display:flex;align-items:center;justify-content:center;padding:100px 20px 20px;position:relative;overflow-x:hidden}body::before{content:'';position:fixed;top:0;left:0;width:100%;height:100%;background-image:radial-gradient(2px 2px at 20px 30px,rgba(255,255,255,.8),transparent),radial-gradient(2px 2px at 40px 70px,rgba(255,255,255,.6),transparent),radial-gradient(1px 1px at 90px 40px,rgba(255,255,255,.9),transparent),radial-gradient(1px 1px at 130px 80px,rgba(255,255,255,.7),transparent),radial-gradient(2px 2px at 160px 30px,rgba(255,255,255,.8),transparent),radial-gradient(1px 1px at 200px 60px,rgba(255,255,255,.6),transparent),radial-gradient(2px 2px at 240px 20px,rgba(255,255,255,.9),transparent),radial-gradient(1px 1px at 280px 70px,rgba(255,255,255,.7),transparent),radial-gradient(2px 2px at 320px 40px,rgba(255,255,255,.8),transparent),radial-gradient(1px 1px at 360px 80px,rgba(255,255,255,.6),transparent);background-repeat:repeat;background-size:400px 100px;animation:3s linear infinite sparkle;pointer-events:none;z-index:1}@keyframes sparkle{0%,100%{opacity:.3;transform:translateY(0)}50%{opacity:1;transform:translateY(-10px)}}body::after{content:'';position:fixed;top:0;left:0;width:100%;height:100%;background-image:radial-gradient(1px 1px at 50px 50px,rgba(255,255,255,.9),transparent),radial-gradient(1px 1px at 150px 25px,rgba(255,255,255,.7),transparent),radial-gradient(2px 2px at 250px 75px,rgba(255,255,255,.8),transparent),radial-gradient(1px 1px at 350px 45px,rgba(255,255,255,.6),transparent),radial-gradient(1px 1px at 450px 15px,rgba(255,255,255,.9),transparent),radial-gradient(2px 2px at 550px 65px,rgba(255,255,255,.7),transparent);background-repeat:repeat;background-size:600px 100px;animation:4s linear infinite reverse sparkle2;pointer-events:none;z-index:1}@keyframes sparkle2{0%,100%{opacity:.2;transform:translateX(0) scale(1)}50%{opacity:.8;transform:translateX(20px) scale(1.2)}}.login-container{max-width:400px;width:100%;background:rgba(255,255,255,.95);border-radius:20px;box-shadow:0 20px 60px rgba(0,0,0,.3);padding:40px 35px;border:1px solid rgba(255,255,255,.2);position:relative;z-index:10;backdrop-filter:blur(10px)}.login-container h1,.login-container h2{color:#333;font-size:2rem;font-weight:700;margin-bottom:30px;text-align:center;text-shadow:0 2px 4px rgba(0,0,0,.1)}.login-container label{display:block;margin-bottom:8px;color:#333;font-size:.95rem;font-weight:600}.login-container input[type=password],.login-container input[type=text]{width:100%;padding:15px 20px;border:2px solid #e1e5e9;border-radius:12px;font-size:1rem;background:#f8f9fa;transition:.3s;box-sizing:border-box;margin-bottom:20px}.login-container input:focus{border-color:#3b82f6;background:#fff;outline:0;box-shadow:0 0 0 3px rgba(59,130,246,.1)}.login-container button[type=submit]{width:100%;background:linear-gradient(135deg,#1e3a8a 0,#3b82f6 50%,#60a5fa 100%);color:#fff;border:none;border-radius:12px;padding:18px 0;font-size:1.1rem;font-weight:600;margin-top:10px;cursor:pointer;transition:.3s;box-shadow:0 4px 15px rgba(30,58,138,.3)}.login-container button[type=submit]:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(30,58,138,.4)}.login-container button[type=submit]:active{transform:translateY(0)}.login-container .alert{margin-bottom:20px;border-radius:12px;font-size:1rem;padding:15px 20px}.login-container .alert-danger{background:#f8d7da;color:#721c24;border:1px solid #f5c6cb}.login-container div{text-align:center;margin-top:25px;color:#666;font-size:1rem}.login-container a{color:#3b82f6;text-decoration:none;font-weight:600;margin-left:5px}.login-container a:hover{text-decoration:underline}@media (max-width:768px){.login-container{max-width:350px;padding:30px 25px}.login-container h1,.login-container h2{font-size:1.8rem;margin-bottom:25px}}