/* ==========================================================================
        // 3. Panel Geser (Slide-in Panel)
        // ========================================================================== */

        .slide-panel {
            position: fixed;
            top: 0;
            right: 0;
            width: 350px;
            max-width: 90%;
            height: 100%;
            background-color: var(--white);
            box-shadow: -2px 0 10px rgba(0, 0, 0, 0.2);
            transform: translateX(100%);
            transition: transform 0.5s ease-in-out, background-color 0.5s ease;
            z-index: 1001;
            display: flex;
            flex-direction: column;
        }

        .slide-panel.is-active {
            transform: translateX(0);
        }

        .panel-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
            background-color: var(--primary-color);
            color: var(--white);
            transition: background-color 0.5s ease;
        }

        .panel-header h2 {
            margin: 0;
            font-size: 20px;
            text-align: left;
            margin-bottom: 0;
            color: var(--white);
        }

        .panel-header h2::after {
            display: none;
        }

        .panel-content {
            padding: 20px;
            overflow-y: auto;
            flex-grow: 1;
        }

        .panel-content ul {
            list-style-type: none;
            padding: 0;
        }

        .panel-content li {
            margin-bottom: 8px;
        }

        .panel-content hr {
            border: 0;
            border-top: 1px solid #eee;
            margin: 15px 0;
        }

        .modal-footer {
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 15px;
            background-color: var(--secondary-color);
            color: var(--dark-blue);
            cursor: pointer;
            transition: background-color 0.3s ease, color 0.3s ease;
        }

        .modal-footer:hover {
            filter: brightness(1.1);
        }

        .close-btn {
            font-size: 20px;
            margin-left: 5px;
        }