:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --danger: #dc2626;
  --success: #16a34a;
  --warning: #d97706;
  --bg: #f4f6f9;
  --sidebar-bg: #1e293b;
  --sidebar-text: #cbd5e1;
  --sidebar-active: #2563eb;
  --card-bg: #ffffff;
  --border: #e2e8f0;
  --text: #1e293b;
  --text-muted: #64748b;
  --shadow-sm: 0 1px 4px rgba(0,0,0,0.07), 0 2px 8px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10), 0 1px 4px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.18);
}

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

body {
  font-family: 'Noto Sans KR', 'Segoe UI', -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* ── Login ── */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 100%);
}

.login-card {
  background: #fff;
  border-radius: 16px;
  padding: 48px 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.25);
}

.login-card .logo {
  text-align: center;
  margin-bottom: 32px;
}

.login-card .logo h1 {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
}

.login-card .logo p {
  color: var(--text-muted);
  font-size: 13px;
  margin-top: 4px;
}

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

.sidebar {
  width: 240px;
  background: var(--sidebar-bg);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
}

.sidebar-header {
  padding: 24px 20px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.sidebar-header h2 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sidebar-header p {
  color: var(--sidebar-text);
  font-size: 12px;
  margin-top: 4px;
}

.sidebar-nav {
  flex: 1;
  padding: 12px 0;
  overflow-y: auto;
}

.nav-section {
  padding: 12px 16px 4px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #475569;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 16px;
  margin: 1px 8px;
  color: var(--sidebar-text);
  text-decoration: none;
  font-size: 13.5px;
  border-radius: 8px;
  transition: background 0.15s, color 0.15s;
}

.sidebar-nav a i {
  font-size: 15px;
  width: 18px;
  text-align: center;
  flex-shrink: 0;
}

.sidebar-nav a:hover {
  background: rgba(255,255,255,0.08);
  color: #fff;
}

.sidebar-nav a.active {
  background: var(--sidebar-active);
  color: #fff;
  font-weight: 600;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.sidebar-footer .user-info {
  font-size: 13px;
  color: var(--sidebar-text);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 7px;
}

.sidebar-footer .user-info span {
  color: #fff;
  font-weight: 600;
}

.main {
  margin-left: 240px;
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.topbar {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 0 32px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.topbar h1 {
  font-size: 18px;
  font-weight: 700;
}

.page-content {
  padding: 28px 32px;
  flex: 1;
}

/* ── Cards ── */
.card {
  background: var(--card-bg);
  border-radius: 12px;
  border: none;
  box-shadow: var(--shadow-sm);
  padding: 24px;
  margin-bottom: 24px;
  transition: box-shadow 0.15s;
}

.card-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 7px;
}

.card-hover:hover {
  box-shadow: var(--shadow-md);
  cursor: pointer;
}

/* ── Stats ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--card-bg);
  border: none;
  box-shadow: var(--shadow-sm);
  border-radius: 12px;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.stat-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.stat-icon.blue   { background: rgba(37,99,235,0.10);  color: #2563eb; }
.stat-icon.green  { background: rgba(22,163,74,0.10);  color: #16a34a; }
.stat-icon.orange { background: rgba(217,119,6,0.10);  color: #d97706; }
.stat-icon.red    { background: rgba(220,38,38,0.10);  color: #dc2626; }
.stat-icon.purple { background: rgba(124,58,237,0.10); color: #7c3aed; }
.stat-icon.cyan   { background: rgba(8,145,178,0.10);  color: #0891b2; }

.stat-body { flex: 1; min-width: 0; }

.stat-card .stat-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--text);
  line-height: 1.1;
}

.stat-card .stat-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 3px;
  font-weight: 500;
}

/* ── Search ── */
.search-bar {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.search-bar select,
.search-bar input[type="text"] {
  padding: 9px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  background: #fff;
  color: var(--text);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.search-bar select:focus,
.search-bar input[type="text"]:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.12);
}

.search-bar select { min-width: 140px; }
.search-bar input[type="text"] { min-width: 240px; flex: 1; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, box-shadow 0.15s, opacity 0.15s, transform 0.1s;
  white-space: nowrap;
}

.btn:active { transform: scale(0.98); }

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); box-shadow: 0 2px 8px rgba(37,99,235,0.3); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { opacity: 0.88; box-shadow: 0 2px 8px rgba(220,38,38,0.3); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { opacity: 0.88; box-shadow: 0 2px 8px rgba(22,163,74,0.3); }
.btn-secondary { background: #e2e8f0; color: var(--text); }
.btn-secondary:hover { background: #cbd5e1; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-warning:hover { opacity: 0.88; box-shadow: 0 2px 8px rgba(217,119,6,0.3); }
.btn-sm { padding: 5px 12px; font-size: 12px; border-radius: 6px; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { background: var(--bg); }

/* ── Table ── */
.table-wrap {
  overflow-x: auto;
  border-radius: 0 0 10px 10px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

thead th {
  background: #f0f4ff;
  padding: 11px 14px;
  text-align: left;
  font-weight: 700;
  color: #3b5bdb;
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid #dbe4ff;
  white-space: nowrap;
}

tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background 0.1s;
}

tbody tr:hover { background: #eef4fd; }

tbody td {
  padding: 11px 14px;
  vertical-align: middle;
}

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.badge-success  { background: #dcfce7; color: #166534; }
.badge-warning  { background: #fef9c3; color: #854d0e; }
.badge-danger   { background: #fee2e2; color: #991b1b; }
.badge-secondary{ background: #f1f5f9; color: #475569; }
.badge-primary  { background: #dbeafe; color: #1e40af; }

/* ── Forms ── */
.form-group { margin-bottom: 20px; }

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  color: var(--text);
  background: #fff;
  font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.12);
}

.form-hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ── Alerts ── */
.alert {
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 14px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.alert-success { background: #dcfce7; color: #166534; border-left: 4px solid #16a34a; }
.alert-danger  { background: #fee2e2; color: #991b1b; border-left: 4px solid #dc2626; }
.alert-info    { background: #dbeafe; color: #1e40af; border-left: 4px solid #2563eb; }

/* ── Modal ── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(2px);
}

.modal-overlay.open { display: flex; }

.modal {
  background: #fff;
  border-radius: 14px;
  padding: 32px;
  width: 100%;
  max-width: 480px;
  box-shadow: var(--shadow-lg);
  animation: modalIn 0.18s ease;
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.96) translateY(-8px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.modal h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.modal p { color: var(--text-muted); font-size: 14px; margin-bottom: 24px; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; }

/* ── Pagination / count ── */
.table-info {
  font-size: 13px;
  color: var(--text-muted);
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .sidebar { width: 200px; }
  .main { margin-left: 200px; }
  .page-content { padding: 20px 16px; }
}