/* Modern, Professional, Minimalist UI Theme (Inter & Pure CSS) */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --bg-page: #f3f4f6;
  --bg-card: #ffffff;
  --bg-sidebar: #0f172a;
  --bg-sidebar-hover: #1e293b;
  --bg-sidebar-active: #2563eb;
  
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  
  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-inverse: #f8fafc;
  
  --border: #e2e8f0;
  
  --success: #10b981;
  --success-light: #d1fae5;
  --danger: #ef4444;
  --danger-light: #fee2e2;
  --warning: #f59e0b;
  --warning-light: #fef3c7;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --radius: 8px;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-page);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  font-size: 14px;
  line-height: 1.5;
}

/* Layout */
.app-container {
  display: flex;
  width: 100%;
}

.sidebar {
  width: 260px;
  background-color: var(--bg-sidebar);
  color: var(--text-inverse);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  min-height: 100vh;
  position: sticky;
  top: 0;
}

.sidebar-brand {
  padding: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-brand h1 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: #ffffff;
}

.sidebar-brand .logo-icon {
  background: var(--primary);
  width: 32px;
  height: 32px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: white;
}

.sidebar-menu {
  list-style: none;
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex-grow: 1;
}

.sidebar-menu-item a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  color: #94a3b8;
  text-decoration: none;
  font-weight: 500;
  border-radius: var(--radius);
  transition: all 0.2s ease;
}

.sidebar-menu-item a:hover {
  background-color: var(--bg-sidebar-hover);
  color: #ffffff;
}

.sidebar-menu-item.active a {
  background-color: var(--bg-sidebar-active);
  color: #ffffff;
}

.sidebar-footer {
  padding: 24px;
  font-size: 0.75rem;
  color: #475569;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
}

.main-content {
  flex-grow: 1;
  padding: 40px;
  overflow-y: auto;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.page-header {
  margin-bottom: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.page-header h2 {
  font-size: 1.8rem;
  font-weight: 700;
  color: #0f172a;
  letter-spacing: -0.02em;
}

.page-description {
  color: var(--text-muted);
  margin-top: 4px;
}

/* Dashboard Metrics & Grid */
.grid-cols-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.grid-cols-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.card-title {
  font-size: 1rem;
  font-weight: 600;
  color: #0f172a;
}

/* Metric Display */
.metric-value {
  font-size: 2.25rem;
  font-weight: 700;
  color: #0f172a;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}

.metric-subtitle {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* Progress Bar (Visual Gauges) */
.progress-container {
  margin-top: 12px;
}

.progress-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.progress-bar-bg {
  background-color: #e2e8f0;
  height: 8px;
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.4s ease-out;
}

.progress-bar-fill.primary { background-color: var(--primary); }
.progress-bar-fill.success { background-color: var(--success); }
.progress-bar-fill.warning { background-color: var(--warning); }
.progress-bar-fill.danger { background-color: var(--danger); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s ease;
  font-family: var(--font-sans);
}

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

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

.btn-secondary {
  background-color: white;
  border-color: var(--border);
  color: var(--text-main);
}

.btn-secondary:hover {
  background-color: #f8fafc;
  border-color: #cbd5e1;
}

.btn-danger {
  background-color: white;
  border-color: #fee2e2;
  color: var(--danger);
}

.btn-danger:hover {
  background-color: var(--danger);
  border-color: var(--danger);
  color: white;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.75rem;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 9999px;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.badge-success {
  background-color: var(--success-light);
  color: #065f46;
}

.badge-danger {
  background-color: var(--danger-light);
  color: #991b1b;
}

.badge-warning {
  background-color: var(--warning-light);
  color: #92400e;
}

.badge-info {
  background-color: #e0f2fe;
  color: #0369a1;
}

/* Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.table th {
  padding: 14px 16px;
  border-bottom: 2px solid var(--border);
  font-weight: 600;
  color: #475569;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.table td {
  padding: 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-main);
  vertical-align: middle;
}

.table tbody tr:hover {
  background-color: #f8fafc;
}

/* Alert box */
.alert {
  padding: 14px 16px;
  border-radius: var(--radius);
  margin-bottom: 24px;
  border: 1px solid transparent;
  display: flex;
  align-items: center;
  gap: 12px;
}

.alert-success {
  background-color: var(--success-light);
  border-color: #a7f3d0;
  color: #065f46;
}

.alert-error {
  background-color: var(--danger-light);
  border-color: #fecaca;
  color: #991b1b;
}

/* Form Styles */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: 6px;
  color: #0f172a;
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background-color: white;
  color: var(--text-main);
  outline: none;
  transition: all 0.15s ease;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-help {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-weight: 400 !important;
}

.checkbox-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--primary);
}

/* Logs and Terminals */
.terminal {
  background-color: #0f172a;
  color: #f8fafc;
  padding: 24px;
  border-radius: var(--radius);
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.85rem;
  line-height: 1.6;
  overflow-x: auto;
  white-space: pre-wrap;
  max-height: 500px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow);
}

/* Responsive adjustments */
@media (max-width: 768px) {
  body {
    flex-direction: column;
  }
  .sidebar {
    width: 100%;
    min-height: auto;
    position: relative;
  }
  .sidebar-brand {
    padding: 16px;
  }
  .sidebar-menu {
    flex-direction: row;
    padding: 12px;
    overflow-x: auto;
  }
  .sidebar-menu-item a {
    padding: 8px 12px;
    white-space: nowrap;
  }
  .sidebar-footer {
    display: none;
  }
  .main-content {
    padding: 20px;
  }
}