:root {
    --primary-color: #1E5149;
    --bg-color: #FFFFFF;
    --text-main: #222222;
    --text-sub: #666666;
    --border-color: #E5E7EB;
    /* 매우 연한 회색 라인 */
    --hover-bg: #F9FAFB;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Pretendard', sans-serif;
    font-size: 13px;
    color: var(--text-main);
    background-color: var(--bg-color);
    display: flex;
    min-height: 100vh;
}

/* Topbar */
.topbar {
    width: 100%;
    background-color: #1E5149;
    /* sample.png 탑바 다크 슬레이트 배경색 */
    color: #FFFFFF;
    padding: 0 1.5rem;
    position: fixed;
    top: 0;
    left: 0;
    height: 36px;
    display: flex;
    align-items: center;
    z-index: 100;
}

.topbar-header {
    margin-right: 2.5rem;
}

.topbar-header h2 {
    font-size: 15px;
    font-weight: 600;
    letter-spacing: -0.3px;
}

.nav-list {
    list-style: none;
    display: flex;
    align-items: center;
    height: 100%;
}

.nav-item {
    padding: 0 1rem;
    height: 28px;
    border-radius: 4px;
    margin: 0 2px;
    cursor: pointer;
    transition: all 0.2s;
    color: rgba(255, 255, 255, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
    font-size: 13px;
}

.nav-item:hover,
.nav-item.active {
    background-color: #E9EEED;
    color: #1E5149;
    font-weight: 500;
}

/* Main Content */
.main-content {
    margin-top: 36px;
    flex: 1;
    padding: 2rem 2.5rem;
    width: 100%;
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

header {
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    padding-bottom: 0.8rem;
    border-bottom: 1px solid var(--border-color);
    /* 선 굵기와 색상 얇게 */
}

header h1 {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-color);
}

.admin-info {
    color: var(--text-sub);
    font-size: 12px;
}

/* Multi-level Accordion (Minimalist/No Box Design) */
.continent-group {
    margin-bottom: 3rem;
}

.continent-header {
    color: var(--text-main);
    padding: 0.5rem 0;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    border-bottom: 2px solid var(--text-main);
    margin-bottom: 1rem;
}

.continent-body {
    display: none;
}

.continent-group.active > .continent-body {
    display: block;
}

.country-group {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px dashed var(--border-color); /* 국가 사이 구분선 */
}

.country-group:last-child {
    margin-bottom: 1rem;
    padding-bottom: 0;
    border-bottom: none;
}

.country-header {
    color: var(--primary-color);
    padding: 0.5rem 0;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    margin-bottom: 0.5rem;
}

.country-body {
    display: none;
    padding-left: 0.5rem; /* Slight indent instead of borders */
}

.country-group.active > .country-body {
    display: block;
}

.toggle-icon {
    font-size: 10px;
    margin-left: 8px;
    color: #999;
}

/* Accordion Styles (Projects - Row Based) */
.accordion-container {
    display: flex;
    flex-direction: column;
    width: 100%;
}

.accordion-item {
    border-bottom: 1px solid var(--border-color);
}

.accordion-item:last-child {
    border-bottom: none;
}

.accordion-header {
    display: grid;
    grid-template-columns: 2.5fr 1fr 1fr 1fr 1fr 2fr;
    gap: 1rem;
    padding: 1rem 0;
    cursor: pointer;
    align-items: center;
    background-color: transparent;
    transition: opacity 0.2s;
}

.accordion-item:hover .accordion-header {
    opacity: 0.7;
}

.accordion-item.active .accordion-header {
    /* No border-bottom or background change for active */
}

.accordion-header > div {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.header-label {
    font-size: 11px;
    color: var(--text-sub);
    margin-bottom: 3px;
    display: block;
    font-weight: 400;
}

.header-value {
    font-weight: 500;
    font-size: 13px;
    color: var(--text-main);
}

.accordion-body {
    display: none;
    padding: 1.5rem 0;
    background-color: transparent;
}

.accordion-item.active .accordion-body {
    display: block;
}

.detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.detail-section h4 {
    margin-bottom: 1rem;
    color: var(--text-main);
    font-size: 13px;
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

/* Table Styles - Super Minimal Line Style */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 8px 4px;
    border-bottom: 1px solid var(--border-color);
    text-align: left;
}

.data-table th {
    color: var(--text-sub);
    font-weight: 400;
    font-size: 12px;
}

.data-table td {
    font-size: 12px;
    color: var(--text-main);
}

.data-table tr:last-child td {
    border-bottom: none;
}

/* General Utilities */
.badge {
    background: #EEEEEE;
    color: #555555;
    padding: 2px 6px;
    border-radius: 2px;
    /* 라운드 거의 없앰 */
    font-size: 11px;
    font-weight: 500;
}

.status-up {
    color: #D32F2F;
    font-weight: 500;
}

.status-down {
    color: #1976D2;
    font-weight: 500;
}

/* Sync Button */
.sync-btn {
    background-color: var(--primary-color);
    color: #FFFFFF;
    border: 1px solid var(--primary-color);
    padding: 6px 14px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s, opacity 0.2s;
    margin-right: 1rem;
    display: flex;
    align-items: center;
    gap: 6px;
}

.sync-btn:hover {
    background-color: #153A34;
}

.sync-btn:disabled {
    background-color: #A0B2AF;
    border-color: #A0B2AF;
    cursor: not-allowed;
}

/* Spinner */
.spinner {
    display: none;
    width: 12px;
    height: 12px;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

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

.sync-btn.loading .spinner {
    display: inline-block;
}

/* --- Responsive Design --- */
@media screen and (max-width: 1024px) {
    .accordion-header {
        grid-template-columns: 2fr 1fr 1fr 1fr 1fr 1.5fr;
    }
}

@media screen and (max-width: 768px) {
    .topbar {
        overflow-x: auto;
        white-space: nowrap;
        padding: 0 1rem;
    }
    /* 스크롤바 숨김 */
    .topbar::-webkit-scrollbar {
        display: none; 
    }
    .main-content {
        padding: 1.5rem 1rem;
    }
    header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    .detail-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    /* 모바일에서 아코디언 헤더를 다단으로 배치 */
    .accordion-header {
        grid-template-columns: 1fr 1fr;
        row-gap: 1rem;
    }
    /* 프로젝트 명과 최근 로그는 공간을 넓게 쓰도록 설정 */
    .accordion-header > div:nth-child(1),
    .accordion-header > div:nth-child(6) {
        grid-column: span 2;
    }
    .continent-header {
        font-size: 15px;
    }
}

@media screen and (max-width: 480px) {
    /* 아주 작은 화면에서는 1열로 배치 */
    .accordion-header {
        grid-template-columns: 1fr;
    }
    .accordion-header > div {
        grid-column: span 1 !important;
    }
    .topbar-header h2 {
        font-size: 13px;
        margin-right: 1rem;
    }
    .nav-item {
        padding: 0 0.5rem;
        font-size: 12px;
    }
}