.main-container {
    width: var(--container-xl-width);
    min-width: var(--container-xl-min-width);
    margin: 0 auto;
    padding: 40px 20px 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.grid-panel-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 40px;
    max-width: 1200px;
    width: 100%;
    margin: 60px auto 0;
    padding: 0 30px;
    justify-items: center;
}

.panel {
    background: white;
    border-radius: 12px;
    padding: 45px 35px;
    box-shadow: var(--container-box-shadow);
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid #e9ecef;
    width: 100%;
    max-width: 350px;
    box-sizing: border-box;
}

.panel:hover {
    transform: translateY(-3px);
    box-shadow: var(--container-box-shadow-hover);
    border-color: #007bff;
}

.panel h3 {
    display: block;
    margin: 18px 0 15px;
    font-size: 19px;
    font-weight: 600;
}

.panel p {
    color: #7f8c8d;
    line-height: 1.7;
    font-size: 14px;
    margin: 0;
}

.panel.disabled {
    opacity: 0.7;
    cursor: not-allowed;
    background: #f8f9fa;
}

.panel.disabled:hover {
    transform: none;
    box-shadow: var(--container-box-shadow);
    border-color: #e9ecef;
}

/* 패널 아이콘 */
.panel-icon {
    font-size: 52px;
    margin-bottom: 25px;
}

/* 패널 상태 뱃지 */
.panel-status {
    padding: 7px 18px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: bold;
    display: inline-block;
    margin-bottom: 18px;
}

.status-available {
    background: #d4edda;
    color: #155724;
}

.status-development {
    background: #fff3cd;
    color: #856404;
}

/* 반응형 디자인 */
@media (max-width: 1200px) {
    .grid-panel-container {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: auto;
        gap: 35px;
    }
}

@media (max-width: 900px) {
    .main-container {
        padding: 30px 15px 50px;
    }
    
    .grid-panel-container {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: auto;
        gap: 30px;
        margin-top: 50px;
        padding: 0 25px;
    }
}

@media (max-width: 768px) {
    .main-container {
        padding: 25px 15px 40px;
    }
    
    .grid-panel-container {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: auto;
        gap: 25px;
        margin-top: 40px;
        padding: 0 20px;
    }
    
    .panel {
        padding: 35px 25px;
    }
}

@media (max-width: 600px) {
    .main-container {
        padding: 20px 10px 30px;
    }
    
    .grid-panel-container {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
        gap: 20px;
        margin-top: 30px;
        padding: 0 10px;
    }
    
    .panel {
        padding: 30px 20px;
    }
}