:root {
    /* Design Tokens */
    --primary-color: #1E5149; --primary-lv-0: #e9eeed; --primary-lv-1: #D2DCDB; --primary-lv-8: #193833;
    --bg-default: #FFFFFF; --bg-muted: #F9FAFB;
    --text-main: #2D3748; --text-sub: #718096; --border-color: #E2E8F0;
    --header-gradient: linear-gradient(90deg, #193833 0%, #1e5149 100%);
    --ai-gradient: linear-gradient(180deg, #da8cf1 0%, #8bb1f2 100%);
    --space-xs: 4px; --space-sm: 8px; --space-md: 16px; --space-lg: 32px; --space-xl: 64px;
    --radius-sm: 4px; --radius-lg: 8px;
    --fz-h1: 20px; --fz-h2: 16px; --fz-body: 13px;
}

/* Base Reset */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Pretendard', sans-serif; font-size: var(--fz-body); color: var(--text-main); background: var(--bg-default); min-height: 100vh; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; font-family: inherit; }

/* Components: Topbar */
.topbar { width: 100%; background: var(--header-gradient); color: #fff; padding: 0 var(--space-lg); position: fixed; top: 0; height: 36px; display: flex; align-items: center; z-index: 1000; }
.topbar-header { margin-right: 60px; font-weight: 700; }
.nav-list { display: flex; list-style: none; gap: var(--space-sm); }
.nav-item { padding: 4px 8px; border-radius: 4px; color: rgba(255,255,255,0.8); transition: 0.2s; font-size: 14px; }
.nav-item:hover { background: var(--primary-lv-1); color: #fff; }
.nav-item.active { background: var(--primary-lv-0); color: var(--primary-color) !important; font-weight: 700; }

/* Global Layout */
.main-content { margin-top: 36px; padding: var(--space-lg) var(--space-xl); max-width: 1400px; margin-left: auto; margin-right: auto; }
header { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: var(--space-lg); padding-bottom: var(--space-sm); border-bottom: 1px solid var(--border-color); }
header h1 { font-size: var(--fz-h1); color: var(--primary-color); }

/* Portal (Index) */
.portal-container { display: flex; flex-direction: column; align-items: center; justify-content: center; height: calc(100vh - 36px); background: var(--bg-muted); padding: var(--space-lg); }
.portal-card { background: #fff; border: 1px solid var(--border-color); border-radius: 12px; padding: 40px; text-align: center; transition: 0.3s; width: 100%; max-width: 380px; box-shadow: 0 4px 6px rgba(0,0,0,0.05); }
.portal-card:hover { transform: translateY(-5px); border-color: var(--primary-color); box-shadow: 0 10px 20px rgba(0,0,0,0.1); }
.portal-card .icon { font-size: 32px; margin-bottom: 20px; width: 64px; height: 64px; background: var(--bg-muted); border-radius: 50%; display: flex; align-items: center; justify-content: center; transition: 0.3s; margin-left: auto; margin-right: auto; }
.portal-card:hover .icon { background: var(--primary-color); color: #fff; }

/* Dashboard List & Console */
.log-console { background:#000; color:#0f0; font-family:monospace; padding:15px; margin-bottom:20px; border-radius:4px; max-height:200px; overflow-y:auto; font-size:12px; }
.accordion-container { border-top: 1px solid var(--border-color); }
.accordion-list-header, .accordion-header { display: grid; grid-template-columns: 2.5fr 1fr 1fr 0.8fr 2fr; gap: var(--space-md); padding: var(--space-md) var(--space-lg); align-items: center; }
.accordion-list-header { font-size: 11px; font-weight: 700; color: var(--text-sub); border-bottom: 1px solid var(--text-main); }
.accordion-item { border-bottom: 1px solid var(--border-color); }
.accordion-item:hover { background: var(--primary-lv-0); }
.repo-title { font-weight: 700; color: var(--primary-color); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.repo-files { text-align: center; font-weight: 600; }
.repo-log { font-size: 11px; color: var(--text-sub); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.accordion-body { display: none; padding: var(--space-lg); background: var(--bg-muted); border-top: 1px solid var(--border-color); }
.accordion-item.active .accordion-body { display: block; }
.status-warning { background: #fff9e6; } .status-error { background: #fee9e7; }
.warning-text { color: #f21d0d !important; font-weight: 700; }

/* Mail Manager Refined */
.mail-wrapper { display: flex; height: calc(100vh - 36px); margin-top: 36px; background: #fff; overflow: hidden; }
.mail-sidebar { width: 240px; border-right: 1px solid var(--border-color); padding: var(--space-md); background: var(--bg-muted); }
.project-select { width: 100%; padding: var(--space-sm); border-radius: var(--radius-sm); border: 1px solid var(--border-color); margin-bottom: var(--space-lg); font-weight: 700; background: #fff; }
.folder-item { padding: var(--space-sm) var(--space-md); border-radius: 4px; cursor: pointer; margin-bottom: 2px; font-weight: 500; display: flex; justify-content: space-between; }
.folder-item:hover { background: var(--primary-lv-0); }
.folder-item.active { background: var(--primary-color); color: #fff; }

.mail-list-area { width: 380px; border-right: 1px solid var(--border-color); display: flex; flex-direction: column; }
.search-bar { padding: var(--space-md); border-bottom: 1px solid var(--border-color); background: var(--bg-muted); }
.search-bar input { width: 100%; padding: 8px; border-radius: 4px; border: 1px solid var(--border-color); margin-bottom: var(--space-sm); }
.mail-item { padding: var(--space-md); border-bottom: 1px solid var(--border-color); cursor: pointer; transition: 0.2s; }
.mail-item:hover { background: var(--bg-muted); }
.mail-item.active { background: #E9EEED; border-left: 4px solid var(--primary-color); }

.mail-content-area { flex: 1; display: flex; flex-direction: column; overflow-y: auto; }
.mail-content-header { padding: var(--space-lg); border-bottom: 1px solid var(--border-color); }
.mail-body { padding: var(--space-lg); line-height: 1.6; min-height: 200px; }

.attachment-area { padding: var(--space-lg); border-top: 1px solid var(--border-color); background: var(--bg-muted); }
.attachment-item { display: flex; align-items: center; justify-content: space-between; background: #fff; padding: var(--space-sm) var(--space-md); border-radius: var(--radius-lg); border: 1px solid var(--border-color); margin-bottom: var(--space-sm); }
.file-info { display: flex; align-items: center; gap: var(--space-sm); flex: 1; }
.ai-recommend { font-size: 11px; color: #6d3dc2; background: #f1ecf9; padding: 2px 6px; border-radius: 4px; font-weight: 700; margin-left: 10px; }

.ai-log-console {
    margin-top: var(--space-md);
    background: #1a202c; /* dark gray */
    color: #a0aec0;
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    font-family: 'Courier New', Courier, monospace;
    font-size: 11px;
    line-height: 1.5;
    max-height: 150px;
    overflow-y: auto;
}
.ai-log-console .log-entry { margin-bottom: 4px; border-left: 2px solid #4a5568; padding-left: 8px; }
.ai-log-console .highlight { color: #63b3ed; font-weight: 700; }
.ai-log-console .success { color: #48bb78; }

.btn-group { display: flex; gap: var(--space-xs); }
.btn-upload { padding: 6px 12px; border-radius: 4px; font-size: 11px; font-weight: 700; color: #fff; }
.btn-ai { background: var(--ai-gradient); }
.btn-normal { background: var(--primary-color); }
.btn-upload:hover { opacity: 0.9; transform: translateY(-1px); }

/* File-specific Log Accordion */
.file-log-area { display: none; width: 100%; margin-top: 10px; background: #1a202c; border-radius: 4px; padding: 12px; font-family: monospace; font-size: 11px; color: #cbd5e0; }
.file-log-area.active { display: block; }
.log-line { margin-bottom: 2px; }
.log-success { color: #48bb78; font-weight: 700; }
.log-info { color: #63b3ed; }

/* Toggle Switch */
.switch { position: relative; display: inline-block; width: 34px; height: 20px; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: #ccc; transition: .4s; border-radius: 20px; }
.slider:before { position: absolute; content: ""; height: 14px; width: 14px; left: 3px; bottom: 3px; background-color: white; transition: .4s; border-radius: 50%; }
input:checked + .slider { background: var(--ai-gradient); }
input:checked + .slider:before { transform: translateX(14px); }

.ai-toggle-wrap { display: flex; align-items: center; gap: var(--space-sm); font-size: 12px; font-weight: 600; color: var(--text-sub); }
input:checked ~ .ai-label { color: #6d3dc2; }

/* Utils */
.sync-btn { background: var(--primary-color); color: #fff; padding: 8px 16px; border-radius: var(--radius-lg); font-weight: 700; }
.badge { background: #eee; padding: 2px 6px; border-radius: 4px; font-size: 11px; }
.toggle-icon { transition: 0.2s; }
.active > .continent-header .toggle-icon, .active > .country-header .toggle-icon { transform: rotate(180deg); }

