:root {
  --sidebar-bg: #1f2733;
  --sidebar-text: #a7b0c2;
  --sidebar-active: #2d8cff;
  --primary: #2d8cff;
  --success: #2ecc71;
  --warning: #f39c12;
  --danger: #e74c3c;
  --info: #17a2b8;
  --muted: #8a93a6;
  --border: #e6e8ee;
  --bg: #f4f6fa;
  --card-bg: #ffffff;
  --text: #263043;
  --radius: 10px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.app { display: flex; min-height: 100vh; }

/* Sidebar */
.sidebar {
  width: 240px;
  flex-shrink: 0;
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; bottom: 0; left: 0;
  overflow-y: auto;
  z-index: 100;
  transition: transform 0.2s ease;
}
.sidebar-brand {
  display: flex; align-items: center; gap: 10px;
  padding: 18px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  color: #fff; font-weight: 700; font-size: 16px;
}
.sidebar-brand img { width: 34px; height: 34px; }
.sidebar-nav { padding: 12px 0; flex: 1; }
.nav-label {
  padding: 14px 20px 6px;
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em;
  color: rgba(167,176,194,0.6);
}
.nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 20px; color: var(--sidebar-text); font-size: 14px;
}
.nav-item:hover { color: #fff; background: rgba(255,255,255,0.05); text-decoration: none; }
.nav-item.active { color: #fff; background: var(--sidebar-active); }
.nav-icon { width: 18px; text-align: center; }
.nav-sub { padding-left: 46px; }
.nav-sub-item { display: block; padding: 6px 12px; color: var(--sidebar-text); font-size: 13px; }
.nav-sub-item:hover { color: #fff; text-decoration: none; }

/* Main */
.main {
  flex: 1;
  margin-left: 240px;
  display: flex; flex-direction: column; min-height: 100vh;
}
.topbar {
  height: 60px; background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 22px; position: sticky; top: 0; z-index: 50;
}
.menu-toggle { background: none; border: none; font-size: 20px; cursor: pointer; color: var(--text); }
.user-menu { display: flex; align-items: center; gap: 12px; }
.user-menu .avatar { width: 38px; height: 38px; border-radius: 50%; object-fit: cover; border: 2px solid var(--border); }
.user-name { font-weight: 600; }
.logout-btn {
  background: var(--danger); color: #fff; border: none; border-radius: 8px;
  padding: 7px 11px; font-size: 15px; cursor: pointer; text-decoration: none;
}
.logout-btn:hover { text-decoration: none; opacity: 0.9; }

.content { padding: 24px; flex: 1; }

.footer {
  padding: 14px 24px; border-top: 1px solid var(--border);
  color: var(--muted); font-size: 13px; text-align: center;
}

/* Breadcrumb */
.breadcrumb { margin-bottom: 18px; color: var(--muted); font-size: 13px; }
.breadcrumb a { color: var(--muted); }
.breadcrumb .sep { margin: 0 8px; }

/* Cards */
.card {
  background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius);
  margin-bottom: 22px; box-shadow: 0 1px 2px rgba(16,24,40,0.04);
}
.card-title { padding: 16px 20px; border-bottom: 1px solid var(--border); font-size: 15px; font-weight: 600; }
.card-title .count { color: var(--muted); font-weight: 400; font-size: 13px; margin-left: 8px; }
.card-body { padding: 20px; }
.card-subtitle { padding: 8px 20px; color: var(--muted); font-size: 12px; }

/* Stats */
.stats-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 18px; margin-bottom: 22px; }
.stat-card {
  background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; 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; color: #fff; flex-shrink: 0;
}
.stat-icon.c-warning { background: var(--warning); }
.stat-icon.c-success { background: var(--success); }
.stat-icon.c-danger { background: var(--danger); }
.stat-icon.c-info { background: var(--info); }
.stat-number { font-size: 26px; font-weight: 700; line-height: 1.1; }
.stat-label { color: var(--muted); font-size: 13px; }

/* Tables */
.table-responsive { overflow-x: auto; }
table.table { width: 100%; border-collapse: collapse; }
.table thead th {
  text-align: left; padding: 11px 14px; font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em;
  color: var(--muted); border-bottom: 1px solid var(--border); white-space: nowrap;
}
.table tbody td { padding: 11px 14px; border-bottom: 1px solid var(--border); }
.table tbody tr:hover { background: #f8faff; }
.table .empty { text-align: center; color: var(--muted); padding: 30px; }

/* Badges */
.badge {
  display: inline-block; padding: 3px 9px; border-radius: 999px;
  font-size: 12px; font-weight: 600; line-height: 1.4;
}
.badge-success { background: #e6f9ef; color: var(--success); }
.badge-warning { background: #fef3e0; color: var(--warning); }
.badge-danger { background: #fde8e8; color: var(--danger); }
.badge-info { background: #e3f5fb; color: var(--info); }
.badge-dark { background: #e8ebf0; color: #4b5563; }
.badge-muted { background: #eef0f4; color: var(--muted); }

/* Alerts */
.alert { padding: 12px 16px; border-radius: var(--radius); margin-bottom: 18px; font-size: 14px; }
.alert-success { background: #e6f9ef; color: #1d7a48; border: 1px solid #bcebd1; }
.alert-danger { background: #fde8e8; color: #b02a2a; border: 1px solid #f5c6c6; }

/* Forms */
.form-group { margin-bottom: 18px; }
.form-label { display: block; margin-bottom: 6px; font-weight: 600; }
.form-label .req { color: var(--danger); }
.form-control {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 14px; background: #fff; color: var(--text);
}
.form-control:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(45,140,255,0.12); }
.form-control:disabled { background: #f4f6fa; color: var(--muted); cursor: not-allowed; }
.form-check { display: flex; align-items: center; gap: 8px; }

/* Buttons */
.btn {
  display: inline-block; padding: 9px 16px; border-radius: 8px; font-size: 14px; font-weight: 600;
  border: none; cursor: pointer; text-decoration: none;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { opacity: 0.92; text-decoration: none; }
.btn-success { background: var(--success); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-secondary { background: #eef0f4; color: var(--text); }
.btn-sm { padding: 5px 10px; font-size: 12px; }

/* Login */
.login-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: #240B12;
  padding: 20px;
}
.login-card {
  background: #fff; border: 1px solid rgba(242,193,78,0.3); border-radius: 12px;
  padding: 0; overflow: hidden; width: 100%; max-width: 420px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.38);
}
.login-brand-panel { background: #0B090A; padding: 24px 36px 20px; text-align: center; }
.login-logo { height: 112px; display: flex; align-items: center; justify-content: center; }
.login-logo img { width: 112px; height: 112px; object-fit: contain; }
.login-title { color: #F2C14E; font-size: 20px; font-weight: 700; margin-top: 8px; }
.login-form-panel { padding: 28px 36px 32px; }
.login-card .btn-primary { background: #C8102E; }
.login-card .form-control:focus { border-color: #C8102E; box-shadow: 0 0 0 3px rgba(200,16,46,0.12); }
.login-btn { width: 100%; margin-top: 8px; }
.login-forgot { display: block; text-align: center; margin-top: 14px; font-size: 13px; color: var(--muted); }

/* Responsive */
@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main { margin-left: 0; }
}

.hidden { display: none; }
.mt-3 { margin-top: 14px; }
.mt-4 { margin-top: 20px; }
.mb-2 { margin-bottom: 10px; }
.text-right { text-align: right; }