/* ====================================================================
   LAWA ISP MANAGEMENT SYSTEM - ENTERPRISE DESIGN SYSTEM
   Supports Dark / Light Modes and English (LTR) / Urdu (RTL)
   ==================================================================== */

:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-card: #1f2937;
  --bg-hover: #374151;
  --border-color: #374151;
  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: rgba(37, 99, 235, 0.15);
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.15);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.15);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.15);
  --info: #06b6d4;
  --info-bg: rgba(6, 182, 212, 0.15);
  --sidebar-width: 260px;
  --topbar-height: 64px;
  --radius: 10px;
  --font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-urdu: 'Noto Nastaliq Urdu', 'Urdu Typesetting', 'Jameel Noori Nastaleeq', 'Segoe UI', serif;
}

[data-theme="light"] {
  --bg-primary: #f3f4f6;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-hover: #f9fafb;
  --border-color: #e5e7eb;
  --text-primary: #111827;
  --text-secondary: #4b5563;
  --text-muted: #9ca3af;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: rgba(37, 99, 235, 0.1);
}

[dir="rtl"] {
  font-family: var(--font-urdu), var(--font-family);
  direction: rtl;
  text-align: right;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  overflow-x: hidden;
}

/* Layout */
.app-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background-color: var(--bg-secondary);
  border-inline-end: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  inset-inline-start: 0;
  z-index: 50;
  transition: all 0.25s ease;
}

.sidebar-header {
  height: var(--topbar-height);
  padding: 0 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  text-decoration: none;
}

.brand-badge {
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  color: white;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 800;
}

.sidebar-menu {
  flex: 1;
  overflow-y: auto;
  padding: 1rem 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.menu-section {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 0.75rem 0.75rem 0.25rem;
  letter-spacing: 0.05em;
}

.menu-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 0.75rem;
  border-radius: var(--radius);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.885rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
}

.menu-item:hover {
  background-color: var(--bg-hover);
  color: var(--text-primary);
}

.menu-item.active {
  background-color: var(--primary);
  color: #ffffff;
  font-weight: 600;
}

.menu-item .icon {
  font-size: 1.15rem;
  width: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.menu-badge {
  margin-inline-start: auto;
  padding: 0.15rem 0.45rem;
  border-radius: 9999px;
  font-size: 0.72rem;
  font-weight: 600;
  background-color: var(--primary-light);
  color: var(--primary);
}

.menu-item.active .menu-badge {
  background-color: rgba(255, 255, 255, 0.25);
  color: white;
}

/* Main Content Area */
.main-wrapper {
  flex: 1;
  margin-inline-start: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  min-width: 0;
}

/* Topbar */
.topbar {
  height: var(--topbar-height);
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 40;
}

.topbar-search {
  display: flex;
  align-items: center;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 0.4rem 0.75rem;
  width: 320px;
  gap: 0.5rem;
}

.topbar-search input {
  background: transparent;
  border: none;
  color: var(--text-primary);
  outline: none;
  width: 100%;
  font-size: 0.875rem;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s ease;
}

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

.user-profile-btn {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  cursor: pointer;
}

.user-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: linear-gradient(135deg, #10b981, #059669);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
}

/* Page Body */
.page-content {
  padding: 1.5rem;
  flex: 1;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.page-subtitle {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

/* Grid & Cards */
.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.25rem;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: transform 0.15s ease;
}

.stat-card:hover {
  transform: translateY(-2px);
}

.stat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-secondary);
  font-size: 0.825rem;
  font-weight: 600;
}

.stat-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.1;
}

.stat-footer {
  font-size: 0.775rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

/* Charts Grid */
.charts-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 1024px) {
  .charts-grid {
    grid-template-columns: 1fr;
  }
}

.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* Tables */
.table-container {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  background-color: var(--bg-card);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.875rem;
}

[dir="rtl"] table {
  text-align: right;
}

th {
  background-color: var(--bg-secondary);
  padding: 0.85rem 1rem;
  color: var(--text-secondary);
  font-weight: 600;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
  vertical-align: middle;
}

tr:hover td {
  background-color: var(--bg-hover);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-success { background: var(--success-bg); color: var(--success); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }
.badge-info { background: var(--info-bg); color: var(--info); }
.badge-neutral { background: var(--border-color); color: var(--text-secondary); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.55rem 1rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.15s ease;
  text-decoration: none;
}

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

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

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

.btn-sm { padding: 0.35rem 0.65rem; font-size: 0.775rem; }

/* Modals */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 1rem;
}

.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  width: 100%;
  max-width: 800px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
}

.modal-header {
  padding: 1.25rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-body {
  padding: 1.25rem;
}

.modal-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* Form inputs */
.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
}

.form-control {
  width: 100%;
  padding: 0.6rem 0.85rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 0.875rem;
  outline: none;
  transition: border-color 0.15s ease;
}

.form-control:focus {
  border-color: var(--primary);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

/* Tabs */
.tabs-nav {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.25rem;
  overflow-x: auto;
}

.tab-btn {
  padding: 0.65rem 1rem;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* NOC Topology Canvas */
.topology-container {
  background-color: #050811;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.5rem;
  min-height: 480px;
  position: relative;
  overflow: hidden;
}

.topology-node {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  padding: 0.75rem 1rem;
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

.topology-node.healthy { border-color: var(--success); }
.topology-node.down { border-color: var(--danger); animation: pulse 1.5s infinite; }
.topology-node.degraded { border-color: var(--warning); }

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7); }
  70% { box-shadow: 0 0 0 10px rgba(239, 68, 68, 0); }
  100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

/* Voucher Print Cards */
.voucher-card {
  border: 2px dashed var(--border-color);
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 1rem;
  text-align: center;
}

.voucher-pin {
  font-family: monospace;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  padding: 0.5rem;
  background: var(--bg-primary);
  border-radius: 6px;
  margin: 0.5rem 0;
  color: var(--primary);
}

/* Invoice Branded Layout */
.invoice-box {
  background: white;
  color: #111827;
  padding: 2rem;
  border-radius: 8px;
  font-size: 0.9rem;
}