* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Inter', sans-serif;
        }

        body {
            /* Ganti URL gambar di bawah dengan foto gedung sekolah jika ada */
            background: linear-gradient(rgba(30, 58, 138, 0.8), rgba(30, 58, 138, 0.8)), 
                        url('https://images.unsplash.com/photo-1523050853064-db0ef33e5f61?auto=format&fit=crop&q=80&w=1000') no-repeat center center fixed;
            background-size: cover;
            height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }

        .login-box {
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(15px);
            -webkit-backdrop-filter: blur(15px);
            padding: 40px;
            border-radius: 24px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
            width: 100%;
            max-width: 420px;
            text-align: center;
            color: white;
        }

        .logo {
            width: 80px;
            margin-bottom: 15px;
            filter: drop-shadow(0 4px 8px rgba(0,0,0,0.2));
        }

        .login-header h2 {
            font-size: 1.8rem;
            font-weight: 600;
            margin-bottom: 5px;
            letter-spacing: -0.5px;
        }

        .login-header p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 35px;
        }

        /* Container Input dengan Ikon */
        .input-group {
            position: relative;
            margin-bottom: 20px;
            text-align: left;
        }

        .input-group i {
            position: absolute;
            left: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.1rem;
            transition: 0.3s;
        }

        .input-group input {
            width: 100%;
            padding: 14px 15px 14px 45px; /* Padding kiri lebih besar untuk ikon */
            background: rgba(255, 255, 255, 0.1);
            border: 1.5px solid rgba(255, 255, 255, 0.2);
            border-radius: 12px;
            outline: none;
            color: white;
            font-size: 1rem;
            transition: all 0.3s ease;
        }

        .input-group input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .input-group input:focus {
            background: rgba(255, 255, 255, 0.2);
            border-color: #fff;
            box-shadow: 0 0 15px rgba(255, 255, 255, 0.1);
        }

        .input-group input:focus + i {
            color: #fff;
        }

        .btn-login {
            width: 100%;
            padding: 14px;
            background: #fff;
            color: #1e3a8a;
            border: none;
            border-radius: 12px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            margin-top: 10px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
        }

        .btn-login:hover {
            background: #f0f0f0;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
        }

        .footer-text {
            margin-top: 30px;
            font-size: 0.75rem;
            color: rgba(255, 255, 255, 0.6);
        }

        /* Responsif untuk Mobile */
        @media (max-width: 480px) {
            .login-box {
                padding: 30px 20px;
            }
        }