:root {
  --sidebar-width: 260px;

  --bg-body: #0b1120;
  --bg-sidebar: #020617;
  --bg-card: #111827;
  --bg-card-soft: #0f172a;
  --bg-card-header: #0f172a;
  --bg-input: #0f172a;

  --text-main: #e5e7eb;
  --text-muted: #94a3b8;
  --text-sidebar: #94a3b8;
  --text-sidebar-hover: #ffffff;

  --border-color: rgba(148, 163, 184, 0.18);

  --primary: #3b82f6;
  --primary-hover: #60a5fa;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;

  --bg-color: var(--bg-body);
  --card-bg: var(--bg-card);
  --text-color: var(--text-main);
  --primary-color: var(--primary);
  --secondary: var(--primary);
}

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

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-body);
  color: var(--text-main);
  display: flex;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background-color: var(--bg-sidebar);
  color: white;
  position: fixed;
  height: 100vh;
  left: 0;
  top: 0;
  padding: 1.5rem 0;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border-color);
}

.brand {
  font-size: 1.25rem;
  font-weight: 700;
  padding: 0 1.5rem 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 1.5rem;
  color: #ffffff;
}

.nav-link {
  display: block;
  padding: 0.75rem 1.5rem;
  color: var(--text-sidebar);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.2s;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-sidebar-hover);
  background: rgba(59, 130, 246, 0.14);
}

/* Main Content */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  padding: 2rem 3rem;
  background:
    radial-gradient(circle at top right, rgba(59, 130, 246, 0.12), transparent 32%),
    var(--bg-body);
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.page-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-main);
}

/* Grid & Cards */
.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: linear-gradient(180deg, rgba(17, 24, 39, 0.98), rgba(15, 23, 42, 0.98));
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.22);
  border: 1px solid var(--border-color);
}

.stat-label {
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: #ffffff;
}

/* Tables */
.table-container {
  background: var(--bg-card);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  overflow-x: auto;
  overflow-y: hidden;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.22);
}

table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
}

th,
td {
  padding: 1rem 1.5rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
}

th {
  background: #0f172a;
  font-weight: 600;
  font-size: 0.875rem;
  color: #cbd5e1;
}

td {
  background: #111827;
}

tr:hover td {
  background: #162033;
}

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

td code,
code {
  background: rgba(59, 130, 246, 0.14) !important;
  color: #bfdbfe !important;
  border: 1px solid rgba(59, 130, 246, 0.24);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

/* Badges */
.badge {
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  display: inline-block;
}

.badge-success {
  background: rgba(16, 185, 129, 0.14);
  color: #6ee7b7;
  border: 1px solid rgba(16, 185, 129, 0.22);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.14);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.22);
}

.badge-danger {
  background: rgba(239, 68, 68, 0.14);
  color: #fca5a5;
  border: 1px solid rgba(239, 68, 68, 0.22);
}

.badge-info {
  background: rgba(59, 130, 246, 0.14);
  color: #93c5fd;
  border: 1px solid rgba(59, 130, 246, 0.22);
}

/* Buttons */
.btn {
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-weight: 500;
  font-size: 0.875rem;
  cursor: pointer;
  border: none;
  text-decoration: none;
  display: inline-block;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--primary);
  color: white;
  box-shadow: 0 10px 28px rgba(59, 130, 246, 0.22);
}

.btn-primary:hover {
  background: var(--primary-hover);
}

.btn-secondary {
  background: var(--bg-card-soft);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(59, 130, 246, 0.14);
  border-color: rgba(59, 130, 246, 0.35);
}

.btn-outline {
  border: 1px solid var(--border-color);
  background: rgba(15, 23, 42, 0.72);
  color: var(--text-main);
}

.btn-outline:hover {
  background: rgba(59, 130, 246, 0.14);
  border-color: rgba(59, 130, 246, 0.35);
}

input,
select,
textarea {
  color-scheme: dark;
}

@media (max-width: 1024px) {
  :root {
    --sidebar-width: 220px;
  }

  .main-content {
    padding: 1.5rem;
  }

  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  body {
    display: block;
  }

  .sidebar {
    position: static;
    width: 100%;
    height: auto;
    padding: 1rem 0;
    border-right: 0;
    border-bottom: 1px solid var(--border-color);
  }

  .brand {
    padding: 0 1rem 1rem;
    margin-bottom: 0.75rem;
  }

  .sidebar nav {
    display: flex;
    gap: 0.25rem;
    overflow-x: auto;
    padding: 0 0.75rem 0.25rem;
  }

  .nav-link {
    white-space: nowrap;
    padding: 0.625rem 0.75rem;
    border-radius: 6px;
  }

  .main-content {
    margin-left: 0;
    padding: 1rem;
  }

  .page-header {
    align-items: flex-start;
    margin-bottom: 1rem;
  }

  .grid-4 {
    grid-template-columns: 1fr !important;
    gap: 1rem;
  }

  .stat-card,
  .table-container {
    border-radius: 8px;
  }

  th,
  td {
    padding: 0.75rem 1rem;
  }
}