/* ════════════════════════════════════════
   Admin Panel — CTS 초청데이
   ════════════════════════════════════════ */

:root {
    --bg: #0f1129;
    --bg-card: #181c3a;
    --bg-sidebar: #0b0e24;
    --border: rgba(255,255,255,0.07);
    --gold: #ffd700;
    --gold-dim: #ffb800;
    --lav: #9b7bff;
    --blue: #3b82f6;
    --green: #22c55e;
    --red: #ef4444;
    --text: #f0eff4;
    --text2: #9e99b7;
    --text3: #5e5882;
    --font-kr: 'Noto Sans KR', sans-serif;
    --font-en: 'Poppins', sans-serif;
    --r: 12px;
    --r-sm: 8px;
    --trans: all .2s ease;
    --sidebar-w: 240px;
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { -webkit-text-size-adjust:100%; }
body {
    font-family: var(--font-kr);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    display: flex;
    min-height: 100vh;
    overflow-x: hidden;
}

a { color: var(--gold); text-decoration: none; }
button { cursor: pointer; font-family: var(--font-kr); }
input, select { font-family: var(--font-kr); }

/* ──── Sidebar ──── */
.sidebar {
    width: var(--sidebar-w);
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 100;
    transition: transform .3s ease;
}

.sidebar-header {
    padding: 24px 20px 16px;
    border-bottom: 1px solid var(--border);
}

.sidebar-logo {
    font-size: 15px;
    font-weight: 800;
    color: var(--gold);
}

.sidebar-sub {
    font-size: 11px;
    color: var(--text3);
    margin-top: 2px;
}

.sidebar-nav {
    flex: 1;
    padding: 12px 10px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: var(--r-sm);
    font-size: 14px;
    font-weight: 500;
    color: var(--text2);
    transition: var(--trans);
}

.nav-item:hover {
    background: rgba(255,255,255,0.04);
    color: var(--text);
}

.nav-item.active {
    background: rgba(155,123,255,0.12);
    color: var(--lav);
    font-weight: 600;
}

.nav-item svg { flex-shrink: 0; }

.sidebar-footer {
    padding: 10px;
    border-top: 1px solid var(--border);
}

.nav-back { font-size: 13px; }

/* ──── Mobile Header ──── */
.mobile-header {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 56px;
    background: var(--bg-sidebar);
    border-bottom: 1px solid var(--border);
    z-index: 101;
    align-items: center;
    padding: 0 16px;
    gap: 12px;
}

.mobile-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--gold);
}

.menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    padding: 4px;
}

.menu-toggle span {
    width: 20px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: var(--trans);
}

/* ──── Main ──── */
.main {
    flex: 1;
    margin-left: var(--sidebar-w);
    padding: 32px;
    min-height: 100vh;
}

.page { display: none; }
.page.active { display: block; }

.page-header { margin-bottom: 28px; }
.page-title { font-size: 24px; font-weight: 800; margin-bottom: 4px; }
.page-desc { font-size: 14px; color: var(--text2); }

/* ──── Stat Cards ──── */
.stat-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--r);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: var(--trans);
}

.stat-card:hover {
    border-color: rgba(155,123,255,0.2);
}

.stat-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--r);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-card-icon.blue { background: rgba(59,130,246,0.12); color: var(--blue); }
.stat-card-icon.green { background: rgba(34,197,94,0.12); color: var(--green); }
.stat-card-icon.purple { background: rgba(155,123,255,0.12); color: var(--lav); }
.stat-card-icon.gold { background: rgba(255,215,0,0.12); color: var(--gold); }

.stat-card-label { font-size: 12px; color: var(--text3); font-weight: 500; }
.stat-card-value { font-family: var(--font-en); font-size: 28px; font-weight: 800; margin-top: 2px; }

/* ──── Capacity ──── */
.capacity-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--r);
    padding: 20px 24px;
    margin-bottom: 24px;
}

.capacity-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.capacity-header h3 { font-size: 14px; font-weight: 600; }
.capacity-pct { font-family: var(--font-en); font-size: 14px; font-weight: 700; color: var(--gold); }

.capacity-bar {
    width: 100%;
    height: 10px;
    background: rgba(255,255,255,0.06);
    border-radius: 10px;
    overflow: hidden;
}

.capacity-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--lav), var(--gold));
    border-radius: 10px;
    transition: width 0.8s ease;
}

.capacity-text { font-size: 12px; color: var(--text3); margin-top: 8px; }

/* ──── Card ──── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--r);
    padding: 0;
    overflow: hidden;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}

.card-header h3 { font-size: 15px; font-weight: 700; }
.card-title { font-size: 15px; font-weight: 700; padding: 16px 20px; border-bottom: 1px solid var(--border); }

.btn-text {
    background: none;
    border: none;
    color: var(--lav);
    font-size: 13px;
    font-weight: 600;
    transition: var(--trans);
}
.btn-text:hover { color: var(--gold); }

/* ──── Table ──── */
.table-wrap { overflow-x: auto; }

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.data-table thead { background: rgba(255,255,255,0.02); }

.data-table th {
    padding: 12px 16px;
    text-align: left;
    font-size: 11px;
    font-weight: 600;
    color: var(--text3);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    white-space: nowrap;
    border-bottom: 1px solid var(--border);
    user-select: none;
}

.data-table th.sortable { cursor: pointer; }
.data-table th.sortable:hover { color: var(--text2); }
.data-table th.sortable.asc::after { content: ' ▲'; font-size: 9px; }
.data-table th.sortable.desc::after { content: ' ▼'; font-size: 9px; }

.data-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
    color: var(--text);
}

.data-table tbody tr:hover {
    background: rgba(155,123,255,0.04);
}

.th-check { width: 40px; text-align: center; }
.th-check input, .data-table td:first-child input { cursor: pointer; }

.data-table .empty-row td {
    text-align: center;
    padding: 48px;
    color: var(--text3);
    font-size: 14px;
}

/* Row Actions */
.row-actions { display: flex; gap: 6px; }

.btn-icon {
    width: 30px;
    height: 30px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text2);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--trans);
}

.btn-icon:hover { border-color: rgba(155,123,255,0.3); color: var(--lav); }
.btn-icon.danger:hover { border-color: rgba(239,68,68,0.3); color: var(--red); }

/* Table Footer */
.table-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    border-top: 1px solid var(--border);
}

.table-info { font-size: 12px; color: var(--text3); }

.pagination { display: flex; gap: 4px; }

.pagination button {
    min-width: 32px;
    height: 32px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text2);
    font-size: 12px;
    font-weight: 600;
    transition: var(--trans);
}

.pagination button:hover { border-color: rgba(155,123,255,0.3); color: var(--text); }
.pagination button.active { background: var(--lav); color: #fff; border-color: var(--lav); }

/* ──── Toolbar ──── */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.toolbar-left { flex: 1; min-width: 200px; }
.toolbar-right { display: flex; gap: 8px; }

.search-box {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    padding: 0 14px;
    max-width: 360px;
    transition: var(--trans);
}

.search-box:focus-within { border-color: var(--lav); }
.search-box svg { color: var(--text3); flex-shrink: 0; }

.search-box input {
    flex: 1;
    background: none;
    border: none;
    color: var(--text);
    font-size: 13px;
    padding: 10px 0;
    outline: none;
}

.search-box input::placeholder { color: var(--text3); }

/* ──── Buttons ──── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 16px;
    border-radius: var(--r-sm);
    font-size: 13px;
    font-weight: 600;
    border: none;
    transition: var(--trans);
    white-space: nowrap;
}

.btn-primary { background: var(--lav); color: #fff; }
.btn-primary:hover { background: #8b69ef; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text2); }
.btn-outline:hover { border-color: rgba(155,123,255,0.3); color: var(--text); }
.btn-danger { background: var(--red); color: #fff; }
.btn-danger:hover { background: #dc2626; }
.btn-gold { background: linear-gradient(135deg, var(--gold), var(--gold-dim)); color: #1a0533; }

/* ──── Bulk Bar ──── */
.bulk-bar {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(80px);
    background: var(--bg-card);
    border: 1px solid var(--lav);
    border-radius: var(--r);
    padding: 12px 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 13px;
    font-weight: 600;
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
    z-index: 50;
    transition: transform 0.3s ease;
    opacity: 0;
    pointer-events: none;
}

.bulk-bar.visible {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    pointer-events: auto;
}

/* ──── Stats Page ──── */
.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.stats-grid .full-width { grid-column: 1 / -1; }

.chart-area {
    padding: 20px;
    min-height: 200px;
}

.chart-bar-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
}

.chart-bar-label { font-size: 12px; color: var(--text2); min-width: 100px; text-align: right; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.chart-bar-track { flex: 1; height: 24px; background: rgba(255,255,255,0.04); border-radius: 6px; overflow: hidden; position: relative; }
.chart-bar-fill { height: 100%; border-radius: 6px; transition: width 0.6s ease; display: flex; align-items: center; padding-left: 8px; font-size: 11px; font-weight: 700; color: #fff; min-width: 30px; }
.chart-bar-val { font-family: var(--font-en); font-size: 12px; font-weight: 700; color: var(--text); min-width: 36px; }

.people-summary {
    padding: 24px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.people-box {
    text-align: center;
    padding: 20px;
    background: rgba(255,255,255,0.02);
    border-radius: var(--r);
    border: 1px solid var(--border);
}

.people-box-num { font-family: var(--font-en); font-size: 32px; font-weight: 800; }
.people-box-num.c-blue { color: var(--blue); }
.people-box-num.c-green { color: var(--green); }
.people-box-num.c-gold { color: var(--gold); }
.people-box-label { font-size: 12px; color: var(--text3); margin-top: 4px; }

/* ──── Modal ──── */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-overlay[hidden] { display: none; }
.modal-overlay.active { display: flex; }

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--r);
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 { font-size: 16px; font-weight: 700; }

.modal-close {
    background: none;
    border: none;
    color: var(--text3);
    transition: var(--trans);
}
.modal-close:hover { color: var(--text); }

.modal-body { padding: 20px; }

.modal-detail-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}

.modal-detail-row:last-child { border-bottom: none; }
.modal-detail-label { color: var(--text3); font-weight: 500; }
.modal-detail-value { color: var(--text); font-weight: 600; text-align: right; }

.modal-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--border);
    display: flex;
    gap: 8px;
    justify-content: flex-end;
}

/* ──── Toast ──── */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    padding: 12px 20px;
    font-size: 13px;
    font-weight: 600;
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
    z-index: 300;
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.3s ease;
    pointer-events: none;
}

.toast.show { transform: translateY(0); opacity: 1; }
.toast.success { border-left: 3px solid var(--green); color: var(--green); }
.toast.error { border-left: 3px solid var(--red); color: var(--red); }

/* ──── Responsive ──── */
@media (max-width: 1024px) {
    .stat-cards { grid-template-columns: repeat(2, 1fr); }
    .stats-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open { transform: translateX(0); }
    .mobile-header { display: flex; }
    .main { margin-left: 0; padding: 72px 16px 24px; }
    .stat-cards { grid-template-columns: 1fr 1fr; gap: 10px; }
    .stat-card { padding: 14px; }
    .stat-card-value { font-size: 22px; }
    .toolbar { flex-direction: column; align-items: stretch; }
    .toolbar-left { min-width: unset; }
    .search-box { max-width: 100%; }
    .toolbar-right { justify-content: flex-end; }
    .people-summary { grid-template-columns: 1fr; }
    .page-title { font-size: 20px; }

    /* Overlay when sidebar open */
    .sidebar-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.5);
        z-index: 99;
        display: none;
    }
    .sidebar-overlay.active { display: block; }
}

@media (max-width: 480px) {
    .stat-cards { grid-template-columns: 1fr; }
}