/* ============================================
   Star-Track Admin — 관리자 전용 스타일
   한양대학교 창업보육센터
   ============================================ */

:root {
    /* Admin Blue Palette */
    --admin-blue: #1a56db;
    --admin-blue-dark: #1e429f;
    --admin-blue-darker: #003666;
    --admin-blue-light: #3f83f8;
    --admin-blue-subtle: #ebf5ff;
    --admin-blue-border: #c3ddfd;

    /* Sidebar */
    --sidebar-bg: #0f172a;
    --sidebar-width: 240px;
    --sidebar-text: #94a3b8;
    --sidebar-text-active: #ffffff;
    --sidebar-hover: rgba(255, 255, 255, 0.06);
    --sidebar-active: rgba(59, 130, 246, 0.2);

    /* Status Colors */
    --green: #0e9f6e;
    --green-bg: #def7ec;
    --red: #f05252;
    --red-bg: #fde8e8;
    --yellow: #c27803;
    --yellow-bg: #fdf6b2;
    --gray-badge: #6b7280;
    --gray-badge-bg: #f3f4f6;

    /* Layout */
    --header-height: 64px;
    --content-bg: #f8fafc;
    --card-bg: #ffffff;
    --border: #e2e8f0;
    --border-light: #f1f5f9;

    /* Text */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);

    /* Transitions */
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============ Reset & Base ============ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    background: var(--content-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    outline: none;
    font-family: inherit;
}

input,
textarea,
select {
    font-family: inherit;
    outline: none;
}

/* ============ Login Screen ============ */
.login-screen {
    min-height: 100vh;
    background: linear-gradient(135deg, #003666 0%, #1a56db 50%, #1e429f 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.login-screen::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.04);
    top: -200px;
    right: -200px;
}

.login-screen::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.04);
    bottom: -150px;
    left: -150px;
}

.login-card {
    background: #ffffff;
    border-radius: 24px;
    padding: 56px 48px;
    width: 440px;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.3);
    position: relative;
    z-index: 1;
}

.login-logo {
    text-align: center;
    margin-bottom: 36px;
}

.login-logo .brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.login-logo .brand-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--admin-blue), var(--admin-blue-dark));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}

.login-logo .brand-name {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--admin-blue-darker);
    letter-spacing: -0.5px;
}

.login-logo .brand-name span {
    color: var(--admin-blue);
}

.login-logo p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-top: 6px;
}

.login-form h2 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.login-form .sub {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 32px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-group input {
    width: 100%;
    padding: 13px 16px;
    border: 1.5px solid var(--border);
    border-radius: 10px;
    font-size: 0.95rem;
    color: var(--text-primary);
    background: #fff;
    transition: var(--transition);
}

.form-group input:focus {
    border-color: var(--admin-blue);
    box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
}

.login-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--admin-blue), var(--admin-blue-dark));
    color: #fff;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 700;
    margin-top: 8px;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(26, 86, 219, 0.35);
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(26, 86, 219, 0.45);
}

.login-hint {
    text-align: center;
    margin-top: 20px;
    font-size: 0.8rem;
    color: var(--text-muted);
    background: var(--content-bg);
    border-radius: 8px;
    padding: 10px;
}

/* ============ Admin Layout ============ */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

/* ---- Sidebar ---- */
.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: var(--transition);
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-brand-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--admin-blue), var(--admin-blue-light));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.sidebar-brand-name {
    font-size: 1.1rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.3px;
}

.sidebar-brand-name span {
    color: var(--admin-blue-light);
}

.sidebar-sub {
    font-size: 0.7rem;
    color: var(--sidebar-text);
    margin-top: 2px;
}

.sidebar-nav {
    padding: 16px 12px;
    flex: 1;
    overflow-y: auto;
}

.nav-section-label {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--sidebar-text);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 0 8px;
    margin: 16px 0 8px;
}

.nav-section-label:first-child {
    margin-top: 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 12px;
    border-radius: 10px;
    color: var(--sidebar-text);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 2px;
}

.nav-item:hover {
    background: var(--sidebar-hover);
    color: var(--sidebar-text-active);
}

.nav-item.active {
    background: var(--sidebar-active);
    color: var(--sidebar-text-active);
    font-weight: 600;
}

.nav-item.active .nav-icon {
    color: var(--admin-blue-light);
}

.nav-icon {
    font-size: 1.1rem;
    width: 22px;
    text-align: center;
    flex-shrink: 0;
}

.sidebar-footer {
    padding: 16px 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 10px;
    cursor: pointer;
    transition: var(--transition);
}

.user-profile:hover {
    background: var(--sidebar-hover);
}

.user-avatar {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--admin-blue), var(--admin-blue-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.user-info .user-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--sidebar-text-active);
}

.user-info .user-role {
    font-size: 0.75rem;
    color: var(--sidebar-text);
}

/* ---- Main Content ---- */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.topbar {
    height: var(--header-height);
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    position: sticky;
    top: 0;
    z-index: 50;
}

.topbar-left h1 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.topbar-left .topbar-sub {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 1px;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.topbar-badge {
    background: var(--admin-blue-subtle);
    color: var(--admin-blue);
    border-radius: 20px;
    padding: 5px 14px;
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid var(--admin-blue-border);
}

.topbar-period {
    font-size: 0.85rem;
    color: var(--text-muted);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 6px 14px;
    background: var(--content-bg);
}

.logout-btn {
    background: none;
    color: var(--text-muted);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 7px 14px;
    font-size: 0.85rem;
    transition: var(--transition);
}

.logout-btn:hover {
    color: var(--red);
    border-color: var(--red);
}

/* ---- Section Pages ---- */
.page-section {
    padding: 28px;
    display: none;
}

.page-section.active {
    display: block;
}

.page-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 28px;
    flex-wrap: wrap;
    gap: 16px;
}

.page-header-left h2 {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.page-header-left p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.page-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* ============ Buttons ============ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 10px 20px;
    border-radius: 9px;
    font-size: 0.875rem;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--admin-blue);
    color: #fff;
    box-shadow: 0 2px 8px rgba(26, 86, 219, 0.3);
}

.btn-primary:hover {
    background: var(--admin-blue-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(26, 86, 219, 0.4);
}

.btn-outline {
    background: #fff;
    color: var(--text-secondary);
    border: 1.5px solid var(--border);
}

.btn-outline:hover {
    border-color: var(--admin-blue);
    color: var(--admin-blue);
}

.btn-success {
    background: var(--green);
    color: #fff;
    box-shadow: 0 2px 8px rgba(14, 159, 110, 0.3);
}

.btn-success:hover {
    background: #057a55;
    transform: translateY(-1px);
}

.btn-warn {
    background: var(--yellow-bg);
    color: var(--yellow);
    border: 1.5px solid #fde68a;
}

.btn-warn:hover {
    background: #fef3c7;
}

.btn-sm {
    padding: 6px 14px;
    font-size: 0.8rem;
    border-radius: 7px;
}

/* ============ KPI Cards ============ */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 28px;
}

.kpi-card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 24px;
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.kpi-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--admin-blue-border);
}

.kpi-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    border-radius: 16px 16px 0 0;
}

.kpi-card.kpi-blue::before {
    background: linear-gradient(90deg, var(--admin-blue), var(--admin-blue-light));
}

.kpi-card.kpi-green::before {
    background: linear-gradient(90deg, #0e9f6e, #31c48d);
}

.kpi-card.kpi-purple::before {
    background: linear-gradient(90deg, #7c3aed, #a78bfa);
}

.kpi-card.kpi-orange::before {
    background: linear-gradient(90deg, #d97706, #fbbf24);
}

.kpi-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.kpi-value {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -1px;
    line-height: 1;
    margin-bottom: 10px;
}

.kpi-value .unit {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 0;
}

.kpi-change {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 3px 9px;
    border-radius: 20px;
}

.kpi-change.up {
    color: var(--green);
    background: var(--green-bg);
}

.kpi-change.down {
    color: var(--red);
    background: var(--red-bg);
}

/* ============ Charts ============ */
.chart-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
    margin-bottom: 28px;
}

.chart-card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 24px;
    border: 1px solid var(--border);
}

.chart-card.full {
    grid-column: 1 / -1;
}

.chart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.chart-header h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.chart-header .chart-sub {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.chart-body {
    position: relative;
}

.chart-tabs {
    display: flex;
    gap: 4px;
    background: var(--content-bg);
    border-radius: 8px;
    padding: 4px;
}

.chart-tab {
    padding: 5px 14px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
    background: none;
    border: none;
    font-family: inherit;
}

.chart-tab.active {
    background: var(--card-bg);
    color: var(--admin-blue);
    box-shadow: var(--shadow-sm);
}

/* ============ Data Table ============ */
.table-card {
    background: var(--card-bg);
    border-radius: 16px;
    border: 1px solid var(--border);
    overflow: hidden;
}

.table-toolbar {
    padding: 18px 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border-light);
    flex-wrap: wrap;
}

.search-box {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--content-bg);
    border: 1.5px solid var(--border);
    border-radius: 9px;
    padding: 9px 14px;
    flex: 1;
    min-width: 200px;
    max-width: 320px;
    transition: var(--transition);
}

.search-box:focus-within {
    border-color: var(--admin-blue);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.08);
}

.search-box input {
    border: none;
    background: none;
    font-size: 0.875rem;
    color: var(--text-primary);
    flex: 1;
}

.search-icon {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.filter-select {
    padding: 9px 14px;
    border: 1.5px solid var(--border);
    border-radius: 9px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    background: var(--content-bg);
    cursor: pointer;
    transition: var(--transition);
}

.filter-select:focus {
    border-color: var(--admin-blue);
    outline: none;
}

.table-wrapper {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead th {
    background: var(--content-bg);
    padding: 12px 16px;
    text-align: left;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

tbody tr {
    border-bottom: 1px solid var(--border-light);
    transition: var(--transition);
    cursor: pointer;
}

tbody tr:last-child {
    border-bottom: none;
}

tbody tr:hover {
    background: var(--admin-blue-subtle);
}

tbody tr.selected {
    background: #eff6ff;
}

tbody td {
    padding: 14px 16px;
    font-size: 0.875rem;
    color: var(--text-primary);
    vertical-align: middle;
}

.company-name-cell {
    display: flex;
    align-items: center;
    gap: 10px;
}

.company-avatar {
    width: 34px;
    height: 34px;
    border-radius: 9px;
    background: linear-gradient(135deg, var(--admin-blue), var(--admin-blue-light));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.company-name {
    font-weight: 600;
    color: var(--text-primary);
}

.company-ceo {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 1px;
}

/* ============ Badges ============ */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    white-space: nowrap;
}

.badge-green {
    background: var(--green-bg);
    color: var(--green);
}

.badge-red {
    background: var(--red-bg);
    color: var(--red);
}

.badge-yellow {
    background: var(--yellow-bg);
    color: var(--yellow);
}

.badge-blue {
    background: var(--admin-blue-subtle);
    color: var(--admin-blue);
}

.badge-gray {
    background: var(--gray-badge-bg);
    color: var(--gray-badge);
}

/* ============ Detail Panel (Slide-in) ============ */
.detail-panel-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.detail-panel-overlay.open {
    opacity: 1;
    visibility: visible;
}

.detail-panel {
    position: fixed;
    top: 0;
    right: 0;
    width: 480px;
    height: 100vh;
    background: var(--card-bg);
    z-index: 201;
    transform: translateX(100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.detail-panel-overlay.open .detail-panel {
    transform: translateX(0);
}

.panel-header {
    padding: 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    position: sticky;
    top: 0;
    background: var(--card-bg);
    z-index: 1;
}

.panel-header-info h3 {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

.panel-header-info p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 3px;
}

.panel-close {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: var(--content-bg);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1rem;
    color: var(--text-secondary);
    transition: var(--transition);
    flex-shrink: 0;
}

.panel-close:hover {
    background: var(--red-bg);
    color: var(--red);
    border-color: var(--red);
}

.panel-body {
    padding: 24px;
    flex: 1;
}

.panel-section {
    margin-bottom: 28px;
}

.panel-section-title {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 14px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-light);
}

.stat-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 12px;
}

.stat-item {
    background: var(--content-bg);
    border-radius: 10px;
    padding: 14px;
}

.stat-item .label {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 600;
    margin-bottom: 5px;
}

.stat-item .value {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.stat-item .value .unit {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
}

.info-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.info-list-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    background: var(--content-bg);
    border-radius: 9px;
}

.info-list-item .ikey {
    font-size: 0.82rem;
    color: var(--text-muted);
    font-weight: 500;
}

.info-list-item .ival {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* ============ Collection Section ============ */
.collection-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.col-stat-card {
    background: var(--card-bg);
    border-radius: 14px;
    padding: 20px;
    border: 1px solid var(--border);
    text-align: center;
}

.col-stat-card .cs-num {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 4px;
}

.col-stat-card .cs-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

.col-stat-card.cs-total .cs-num {
    color: var(--admin-blue);
}

.col-stat-card.cs-done .cs-num {
    color: var(--green);
}

.col-stat-card.cs-pending .cs-num {
    color: var(--yellow);
}

.col-stat-card.cs-notdone .cs-num {
    color: var(--red);
}

.progress-bar-wrap {
    background: var(--border-light);
    border-radius: 99px;
    height: 8px;
    overflow: hidden;
    margin: 8px 0;
}

.progress-bar-fill {
    height: 100%;
    border-radius: 99px;
    background: linear-gradient(90deg, var(--admin-blue), var(--admin-blue-light));
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-bar-fill.green {
    background: linear-gradient(90deg, #0e9f6e, #31c48d);
}

/* ============ Group Section ============ */
.group-tabs {
    display: flex;
    gap: 6px;
    margin-bottom: 24px;
    background: var(--card-bg);
    border-radius: 12px;
    padding: 6px;
    border: 1px solid var(--border);
    max-width: 640px;
}

.group-tab-btn {
    flex: 1;
    padding: 9px 14px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    background: none;
    border: none;
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.group-tab-btn.active {
    background: var(--admin-blue);
    color: #fff;
    box-shadow: 0 2px 8px rgba(26, 86, 219, 0.3);
}

.group-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 20px;
}

.group-list-card {
    background: var(--card-bg);
    border-radius: 14px;
    border: 1px solid var(--border);
    overflow: hidden;
}

.group-list-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-light);
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text-primary);
}

.group-list-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 13px 20px;
    border-bottom: 1px solid var(--border-light);
    cursor: pointer;
    transition: var(--transition);
}

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

.group-list-item:hover {
    background: var(--admin-blue-subtle);
}

.group-list-item.selected {
    background: var(--admin-blue-subtle);
}

.group-list-item .gname {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

.group-list-item .gcount {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* ============ Memo Section ============ */
.memo-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 20px;
    align-items: start;
}

.memo-company-list {
    background: var(--card-bg);
    border-radius: 14px;
    border: 1px solid var(--border);
    overflow: hidden;
    max-height: 620px;
    overflow-y: auto;
}

.memo-company-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-light);
    cursor: pointer;
    transition: var(--transition);
}

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

.memo-company-item:hover {
    background: var(--content-bg);
}

.memo-company-item.selected {
    background: var(--admin-blue-subtle);
}

.memo-company-item .mc-name {
    font-size: 0.875rem;
    font-weight: 600;
}

.memo-company-item .mc-count {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.memo-panel {
    background: var(--card-bg);
    border-radius: 14px;
    border: 1px solid var(--border);
    padding: 24px;
}

.memo-input-area {
    width: 100%;
    min-height: 100px;
    border: 1.5px solid var(--border);
    border-radius: 10px;
    padding: 14px;
    font-size: 0.9rem;
    resize: vertical;
    color: var(--text-primary);
    background: var(--content-bg);
    transition: var(--transition);
}

.memo-input-area:focus {
    border-color: var(--admin-blue);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.08);
}

.memo-card {
    background: var(--content-bg);
    border-radius: 12px;
    padding: 16px;
    border: 1px solid var(--border-light);
    margin-bottom: 12px;
}

.memo-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}

.memo-card-date {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.memo-card-actions {
    display: flex;
    gap: 6px;
}

.memo-action-btn {
    background: none;
    border: none;
    font-size: 0.8rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: 3px 8px;
    border-radius: 5px;
    transition: var(--transition);
}

.memo-action-btn:hover {
    background: var(--border);
    color: var(--text-primary);
}

.memo-action-btn.del:hover {
    background: var(--red-bg);
    color: var(--red);
}

.memo-card-text {
    font-size: 0.875rem;
    color: var(--text-primary);
    line-height: 1.6;
}

/* ============ Toast Notification ============ */
.toast-container {
    position: fixed;
    bottom: 28px;
    right: 28px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    background: #1e293b;
    color: #fff;
    padding: 14px 20px;
    border-radius: 12px;
    font-size: 0.875rem;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 10px;
    animation: slideUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    max-width: 340px;
}

.toast.success {
    border-left: 4px solid var(--green);
}

.toast.error {
    border-left: 4px solid var(--red);
}

.toast.info {
    border-left: 4px solid var(--admin-blue);
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* ============ Empty State ============ */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state .empty-icon {
    font-size: 3rem;
    margin-bottom: 14px;
}

.empty-state p {
    font-size: 0.9rem;
}

/* ============ Responsive ============ */
@media (max-width: 1100px) {
    .chart-grid {
        grid-template-columns: 1fr;
    }

    .group-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 900px) {
    :root {
        --sidebar-width: 200px;
    }

    .collection-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .memo-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .login-card {
        width: 90%;
        padding: 36px 28px;
    }

    .detail-panel {
        width: 95%;
    }
}