:root {
  --sidebar-width: 260px;
  --primary-color: #4F46E5;
  --success-color: #22C55E;
  --warning-color: #F59E0B;
  --danger-color: #EF4444;
  --background-color: #F7F8FA;
  --sidebar-color: #FFFFFF;
  --card-color: #FFFFFF;
  --text-color: #111827;
  --muted-color: #6B7280;
  --border-color: #E5E7EB;
  --radius-lg: 12px;
  --radius-md: 10px;
  --shadow-soft: 0 1px 2px rgba(15, 23, 42, 0.04);
}

:root[data-theme="dark"] {
  --primary-color: #818CF8;
  --success-color: #4ADE80;
  --warning-color: #FBBF24;
  --danger-color: #F87171;
  --background-color: #0F172A;
  --sidebar-color: #111827;
  --card-color: #111827;
  --text-color: #F9FAFB;
  --muted-color: #94A3B8;
  --border-color: #1F2937;
  --shadow-soft: 0 1px 2px rgba(2, 6, 23, 0.25);
}

* { box-sizing: border-box; }
body {
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--background-color);
  color: var(--text-color);
  margin: 0;
}
body.body-locked { overflow: hidden; }

#app { min-height: 100vh; }
#main-content {
  max-width: 1320px;
  margin: 0 auto;
  width: 100%;
}

.navbar {
  background: var(--sidebar-color);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1030;
}

#sidebar-placeholder {
  width: var(--sidebar-width);
  background: var(--sidebar-color);
  border-right: 1px solid var(--border-color);
}

.app-sidebar {
  width: var(--sidebar-width);
  min-height: 100vh;
  position: sticky;
  top: 0;
  background: var(--sidebar-color);
  border-right: 1px solid var(--border-color);
  transition: transform 0.2s ease;
}
.app-sidebar.collapsed { width: 74px; }
.brand-box {
  background: var(--card-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 0.9rem 1rem;
  box-shadow: var(--shadow-soft);
}
.app-sidebar .nav-link {
  color: var(--text-color);
  border-radius: var(--radius-md);
  padding: 0.7rem 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.65rem;
}
.app-sidebar .nav-link:hover,
.app-sidebar .nav-link.active {
  background: rgba(79, 70, 229, 0.08);
  color: var(--primary-color);
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.24);
  z-index: 1030;
}

.card {
  background: var(--card-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.form-control,
.form-select,
textarea {
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--card-color);
  color: var(--text-color);
}
.form-control:focus,
.form-select:focus,
textarea:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.2rem rgba(79, 70, 229, 0.12);
}

.btn { border-radius: 999px; }
.btn-primary {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: white;
}
.btn-outline-primary {
  color: var(--primary-color);
  border-color: var(--border-color);
}
.btn-outline-primary:hover {
  background: rgba(79, 70, 229, 0.08);
  color: var(--primary-color);
}

.page-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 1rem;
}
.page-title { font-size: 1.35rem; font-weight: 700; margin-bottom: 0.2rem; }
.page-subtitle { color: var(--muted-color); }

.stat-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--border-color);
  background: var(--card-color);
  font-size: 0.9rem;
  color: var(--muted-color);
}
.metric-card {
  padding: 1rem 1.1rem;
  min-height: 132px;
}
.metric-value { font-size: 1.7rem; font-weight: 700; }
.metric-label { color: var(--muted-color); font-size: 0.9rem; }
.metric-foot { color: var(--muted-color); font-size: 0.8rem; }

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--primary-color);
}

.table th {
  color: var(--muted-color);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.empty-state {
  padding: 1.25rem;
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
  color: var(--muted-color);
  background: rgba(79, 70, 229, 0.03);
}

.app-loading {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(17, 24, 39, 0.3);
  z-index: 1100;
}
.app-loading.show { display: flex; }

.toast-container { z-index: 1200; }
.toast { border-radius: 10px; }

@media (max-width: 991px) {
  #app { flex-direction: column; }
  #sidebar-placeholder {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border-color);
  }
  .app-sidebar {
    position: fixed;
    left: 0;
    top: 0;
    z-index: 1040;
    transform: translateX(-100%);
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.16);
    height: 100vh;
  }
  .app-sidebar.collapsed { transform: translateX(0); width: var(--sidebar-width); }
  body.sidebar-collapsed .app-sidebar { transform: translateX(0); }
}

@media (max-width: 575px) {
  #main-content { padding-left: 1rem !important; padding-right: 1rem !important; }
  .page-header { align-items: flex-start; }
}