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

        body {
            background-image: url(image/kkisby.jpg);
            background-size: cover;
            background-position: center;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            padding: 20px;
        }

        .login-card {
            background: #fff;
            width: 100%;
            max-width: 420px;
            padding: 40px;
            border-radius: 15px;
            box-shadow: 0 15px 35px rgba(0,0,0,0.08);
            border-top: 5px solid #1e3a8a; /* Warna biru gelap khas SMK */
        }

        .header {
            text-align: center;
            margin-bottom: 30px;
        }

        .header img {
            width: 90px;
            margin-bottom: 15px;
        }

        .header h1 {
            font-size: 1.4rem;
            color: #1e3a8a;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .header p {
            font-size: 0.9rem;
            color: #64748b;
        }

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

        .form-group label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: #475569;
            margin-bottom: 8px;
        }

        .input-wrapper {
            position: relative;
        }

        .input-wrapper i.prefix {
            position: absolute;
            left: 12px;
            top: 50%;
            transform: translateY(-50%);
            color: #94a3b8;
        }

        .form-group input {
            width: 100%;
            padding: 12px 12px 12px 40px;
            border: 1.5px solid #e2e8f0;
            border-radius: 8px;
            font-size: 1rem;
            transition: all 0.3s;
        }

        .form-group input:focus {
            border-color: #1e3a8a;
            outline: none;
            box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
        }

        /* Toggle Password Style */
        .toggle-password {
            position: absolute;
            right: 12px;
            top: 50%;
            transform: translateY(-50%);
            cursor: pointer;
            color: #94a3b8;
        }

        .btn-login {
            width: 100%;
            padding: 14px;
            background: #1e3a8a;
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: bold;
            cursor: pointer;
            transition: 0.3s;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .btn-login:hover {
            background: #1e40af;
            transform: translateY(-1px);
        }

        .btn-login:disabled {
            background: #94a3b8;
            cursor: not-items;
        }

        .spinner {
            display: none;
            width: 20px;
            height: 20px;
            border: 3px solid rgba(255,255,255,0.3);
            border-radius: 50%;
            border-top-color: #fff;
            animation: spin 1s ease-in-out infinite;
            margin-right: 10px;
        }

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

        .footer {
            margin-top: 25px;
            text-align: center;
            font-size: 0.85rem;
            color: #64748b;
        }

        .footer a {
            color: #1e3a8a;
            text-decoration: none;
            font-weight: 600;
        }