/* ================= VARIABLES & RESET ================= */
        :root {
            --primary-blue: #0044cc;
            --dark-blue: #002a80;
            --light-blue-bg: #e6f2ff;
            --accent-yellow: #ffcc00;
            --text-dark: #333333;
            --white: #ffffff;
        }

        * { margin: 0; padding: 0; box-sizing: border-box; }
        
        body {
            font-family: 'Poppins', sans-serif;
            color: var(--text-dark);
            background-color: var(--light-blue-bg); /* Background halaman biru muda */
            height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ================= HEADER SIMPEL ================= */
        header {
            background-color: transparent;
            padding: 20px 0;
            position: absolute;
            width: 100%;
            top: 0;
            z-index: 10;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .back-link {
            color: var(--dark-blue);
            font-weight: 600;
            font-size: 0.9rem;
        }
        .back-link i { margin-right: 5px; }
        .back-link:hover { color: var(--primary-blue); }

        /* ================= LOGIN CARD ================= */
        .auth-wrapper {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }

        .auth-card {
            background: var(--white);
            width: 100%;
            max-width: 400px;
            padding: 40px;
            margin-top: 40px;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 42, 128, 0.1);
            text-align: center;
        }

        .reg-card {
            background: var(--white);
            width: 100%;
            max-width: 500px;
            padding: 40px;
            margin-top: 40px;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 42, 128, 0.1);
            text-align: center;
        }

        .auth-logo {
            max-width: 150px;
            margin-bottom: 20px;
        }

        .auth-card h2 {
            color: var(--dark-blue);
            margin-bottom: 5px;
            font-size: 1.5rem;
        }
        
        .subtitle {
            font-size: 0.9rem;
            color: #666;
            margin-bottom: 30px;
            display: block;
        }

        /* Form Styles */
        .form-group {
            margin-bottom: 20px;
            text-align: left;
        }

        .form-group label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-dark);
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
        }

        .input-box {
            position: relative;
        }

        .input-box input {
            width: 100%;
            padding: 12px 40px 12px 15px;
            border: 1px solid #ddd;
            border-radius: 8px;
            font-family: inherit;
            font-size: 0.95rem;
            outline: none;
            transition: 0.3s;
        }

        .input-box input:focus {
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 3px rgba(0, 68, 204, 0.1);
        }

        .input-box i {
            position: absolute;
            right: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: #aaa;
        }

        .form-options {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 25px;
            font-size: 0.85rem;
        }

        .form-options a { color: var(--primary-blue); font-weight: 500; }
        .form-options a:hover { text-decoration: underline; }

        /* Checkbox Terms */
        .terms { font-size: 0.8rem; display: flex; gap: 8px; align-items: flex-start; margin-bottom: 20px; text-align: left; }
        .terms input { margin-top: 3px; }

        .btn-submit {
            width: 100%;
            background: var(--primary-blue);
            color: var(--white);
            border: none;
            padding: 12px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.3s;
        }

        .btn-submit:hover {
            background: var(--accent-yellow);
            color: var(--primary-blue);
        }

        .auth-footer {
            margin-top: 25px;
            font-size: 0.9rem;
            color: #666;
        }
        .auth-footer a {
            color: var(--primary-blue);
            font-weight: 700;
        }

        /* Footer Copyright */
        .page-footer {
            text-align: center;
            padding: 20px;
            font-size: 0.8rem;
            color: #888;
        }