:root {
  --nv-bg-primary: #ffffff;
  --nv-bg-secondary: #f7f6f3;
  --nv-bg-tertiary: #fafafa;
  --nv-bg-hover: rgba(55, 53, 47, 0.08);
  --nv-bg-active: rgba(55, 53, 47, 0.16);
  --nv-text-primary: #37352f;
  --nv-text-secondary: #787774;
  --nv-text-muted: #9b9a97;
  --nv-text-disabled: #c7c7c5;
  --nv-border: #e9e9e7;
  --nv-border-strong: #d3d3d1;
  --nv-divider: #ebebea;
  --nv-accent: #2383e2;
  --nv-accent-hover: #1a6bc2;
  --nv-accent-light: rgba(35, 131, 226, 0.1);
  --nv-font-sans: Arial, Helvetica, sans-serif;
  --nv-font-mono: "SFMono-Regular", Menlo, Consolas, monospace;
  --nv-size-xs: 11px;
  --nv-size-sm: 12px;
  --nv-size-md: 13px;
  --nv-size-lg: 14px;
  --nv-weight-normal: 400;
  --nv-weight-medium: 500;
  --nv-weight-semibold: 600;
  --nv-space-1: 2px;
  --nv-space-2: 4px;
  --nv-space-3: 6px;
  --nv-space-4: 8px;
  --nv-space-6: 12px;
  --nv-space-8: 16px;
  --nv-radius-sm: 0;
  --nv-radius-md: 0;
  --nv-radius-lg: 0;
  --nv-shadow-sm: none;
  --nv-shadow-lg: none;
  --nv-focus-ring: 0 0 0 1px var(--nv-accent);
  --nv-transition-fast: 0ms;
  --nv-transition-normal: 0ms;
  --nv-topbar-height: 32px;
  --nv-sidebar-width: 200px;
}

[data-theme="dark"] {
  --nv-bg-primary: #191919;
  --nv-bg-secondary: #202020;
  --nv-bg-tertiary: #252525;
  --nv-bg-hover: rgba(255, 255, 255, 0.055);
  --nv-bg-active: rgba(255, 255, 255, 0.1);
  --nv-text-primary: #ffffffeb;
  --nv-text-secondary: #ffffff99;
  --nv-text-muted: #ffffff66;
  --nv-text-disabled: #ffffff33;
  --nv-border: #ffffff14;
  --nv-border-strong: #ffffff24;
  --nv-divider: #ffffff0f;
  --nv-accent: #529cca;
  --nv-accent-hover: #6bb3db;
  --nv-accent-light: rgba(82, 156, 202, 0.15);
  --nv-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --nv-shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);
  --nv-focus-ring: 0 0 0 2px rgba(82, 156, 202, 0.4);
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--nv-font-sans);
  font-size: var(--nv-size-md);
  line-height: 1.5;
  color: var(--nv-text-primary);
  background-color: var(--nv-bg-primary);
  min-height: 100vh;
}

*:focus {
  outline: none;
}

*:focus-visible {
  outline: none;
  box-shadow: var(--nv-focus-ring);
  border-radius: var(--nv-radius-md);
}

/* TOPBAR */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nv-topbar-height);
  padding: 0 8px;
  background-color: var(--nv-bg-primary);
  border-bottom: 1px solid var(--nv-border);
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo {
  font-size: var(--nv-size-lg);
  font-weight: var(--nv-weight-semibold);
  color: var(--nv-text-primary);
  text-decoration: none;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 4px;
}

.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: transparent;
  border: 1px solid var(--nv-border);
  cursor: pointer;
  color: var(--nv-text-secondary);
}

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

.icon-btn svg {
  width: 14px;
  height: 14px;
}

.filter-toggle {
  display: none;
}

@media (max-width: 768px) {
  .filter-toggle {
    display: flex;
  }
}

/* LAYOUT */
.app-layout {
  display: flex;
  min-height: calc(100vh - var(--nv-topbar-height));
}

/* SIDEBAR */
.sidebar {
  width: var(--nv-sidebar-width);
  flex-shrink: 0;
  background-color: var(--nv-bg-primary);
  border-right: 1px solid var(--nv-border);
  overflow-y: auto;
  padding: 8px;
}

.sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--nv-space-4);
}

.sidebar-title {
  font-size: var(--nv-size-sm);
  font-weight: var(--nv-weight-semibold);
  color: var(--nv-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.clear-all-btn {
  font-size: var(--nv-size-xs);
  color: var(--nv-accent);
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--nv-space-1) var(--nv-space-2);
  border-radius: var(--nv-radius-sm);
}

.clear-all-btn:hover {
  background-color: var(--nv-accent-light);
}

.filter-group {
  margin-bottom: var(--nv-space-4);
  padding-bottom: var(--nv-space-4);
  border-bottom: 1px solid var(--nv-divider);
}

.filter-group:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.filter-label {
  display: block;
  font-size: var(--nv-size-sm);
  font-weight: var(--nv-weight-medium);
  color: var(--nv-text-primary);
  margin-bottom: var(--nv-space-2);
}

.filter-input {
  width: 100%;
  height: 32px;
  padding: 0 var(--nv-space-2);
  font-size: var(--nv-size-sm);
  font-family: inherit;
  color: var(--nv-text-primary);
  background-color: var(--nv-bg-primary);
  border: 1px solid var(--nv-border);
  border-radius: var(--nv-radius-md);
}

.filter-input:focus {
  border-color: var(--nv-accent);
  box-shadow: var(--nv-focus-ring);
}

.filter-input::placeholder {
  color: var(--nv-text-muted);
}

.brand-list {
  max-height: 180px;
  overflow-y: auto;
  margin-top: var(--nv-space-2);
}

.brand-item {
  display: flex;
  align-items: center;
  gap: var(--nv-space-2);
  padding: var(--nv-space-1) 0;
  cursor: pointer;
  font-size: var(--nv-size-sm);
  color: var(--nv-text-primary);
}

.brand-item input {
  accent-color: var(--nv-accent);
  width: 14px;
  height: 14px;
  cursor: pointer;
}

.brand-actions {
  display: flex;
  gap: var(--nv-space-2);
  margin-top: var(--nv-space-2);
}

.brand-actions button {
  font-size: var(--nv-size-xs);
  color: var(--nv-text-muted);
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--nv-space-1);
}

.brand-actions button:hover {
  color: var(--nv-accent);
}

.range-inputs {
  display: flex;
  gap: var(--nv-space-2);
  align-items: center;
}

.range-inputs input {
  flex: 1;
  min-width: 0;
}

.range-separator {
  color: var(--nv-text-muted);
  font-size: var(--nv-size-sm);
}

.range-unit {
  font-size: var(--nv-size-xs);
  color: var(--nv-text-muted);
  margin-left: var(--nv-space-1);
}

.bw-mode-tabs {
  display: flex;
  margin-bottom: var(--nv-space-2);
  background: var(--nv-bg-primary);
  border: 1px solid var(--nv-border);
  border-radius: var(--nv-radius-md);
  overflow: hidden;
}

.bw-mode-tab {
  flex: 1;
  padding: var(--nv-space-1) var(--nv-space-2);
  font-size: var(--nv-size-xs);
  text-align: center;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--nv-text-muted);
  transition: all var(--nv-transition-fast);
}

.bw-mode-tab.active {
  background-color: var(--nv-accent);
  color: #fff;
}

.unlimited-check {
  display: flex;
  align-items: center;
  gap: var(--nv-space-2);
  margin-top: var(--nv-space-2);
  font-size: var(--nv-size-sm);
  color: var(--nv-text-secondary);
}

.unlimited-check input {
  accent-color: var(--nv-accent);
}

/* FAQ Section */
.faq-section {
  margin-top: var(--nv-space-6);
  padding-top: var(--nv-space-4);
  border-top: 1px solid var(--nv-border);
}

.faq-title {
  font-size: var(--nv-size-sm);
  font-weight: var(--nv-weight-semibold);
  color: var(--nv-text-primary);
  margin-bottom: var(--nv-space-3);
}

.faq-item {
  margin-bottom: var(--nv-space-2);
  font-size: var(--nv-size-xs);
}

.faq-item summary {
  cursor: pointer;
  color: var(--nv-text-primary);
  font-weight: var(--nv-weight-medium);
  padding: var(--nv-space-1) 0;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::before {
  content: '▸ ';
  color: var(--nv-text-muted);
}

.faq-item[open] summary::before {
  content: '▾ ';
}

.faq-item summary:hover {
  color: var(--nv-accent);
}

.faq-item p {
  margin: var(--nv-space-1) 0 var(--nv-space-2) var(--nv-space-3);
  color: var(--nv-text-secondary);
  line-height: 1.5;
}

.faq-contact {
  margin-top: var(--nv-space-4);
  padding-top: var(--nv-space-3);
  border-top: 1px dashed var(--nv-border);
  font-size: var(--nv-size-xs);
  color: var(--nv-text-muted);
}

.faq-contact a {
  color: var(--nv-accent);
  text-decoration: none;
}

.faq-contact a:hover {
  text-decoration: underline;
}

/* Mobile Drawer */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 200;
}

.sidebar-overlay.active {
  display: block;
}

@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    left: 0;
    top: var(--nv-topbar-height);
    bottom: 0;
    z-index: 201;
    transform: translateX(-100%);
    transition: transform var(--nv-transition-normal);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-close {
    display: flex;
  }
}

@media (min-width: 769px) {
  .sidebar-close {
    display: none;
  }
}

/* MAIN CONTENT */
.main-content {
  flex: 1;
  min-width: 0;
  padding: var(--nv-space-4);
  overflow-x: auto;
}

.status-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--nv-space-2);
  margin-bottom: var(--nv-space-3);
  font-size: var(--nv-size-sm);
  color: var(--nv-text-secondary);
}

.result-count {
  font-weight: var(--nv-weight-medium);
}

.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--nv-space-1);
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--nv-space-1);
  padding: 2px 8px;
  font-size: var(--nv-size-xs);
  background-color: var(--nv-bg-secondary);
  border: 1px solid var(--nv-border);
  border-radius: var(--nv-radius-sm);
}

.filter-chip button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--nv-text-muted);
  font-size: 10px;
  padding: 0;
  margin-left: 2px;
}

.filter-chip button:hover {
  color: var(--nv-text-primary);
}

/* TABLE */
.table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  min-width: 800px;
  border-collapse: collapse;
  font-size: var(--nv-size-md);
}

.data-table thead {
  position: sticky;
  top: 0;
  z-index: 10;
  background-color: var(--nv-bg-primary);
}

.data-table th {
  padding: 2px 6px;
  text-align: left;
  font-weight: var(--nv-weight-semibold);
  font-size: var(--nv-size-sm);
  color: var(--nv-text-primary);
  border-bottom: 1px solid var(--nv-border);
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
}

.data-table th:hover {
  background-color: var(--nv-bg-hover);
}

.th-content {
  display: inline-flex;
  align-items: center;
  gap: 2px;
}

.th-deals {
  min-width: 200px;
  width: 25%;
  cursor: default;
}

.sort-icon {
  opacity: 0.4;
  font-size: 10px;
}

.data-table th:hover .sort-icon {
  opacity: 0.7;
}

.data-table th.sorted .sort-icon {
  opacity: 1;
  color: var(--nv-accent);
}

.data-table th.sorted {
  color: var(--nv-text-primary);
}

.data-table td {
  padding: 2px 6px;
  border-bottom: none;
  vertical-align: middle;
}

.data-table tbody tr {
  cursor: pointer;
}

.data-table tbody tr:hover {
  background-color: var(--nv-bg-hover);
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

.cell-deals {
  min-width: 200px;
  width: 25%;
  font-size: var(--nv-size-md);
  color: #0000EE;
  line-height: 1.2;
  text-decoration: underline;
  cursor: pointer;
}

.cell-deals:hover {
  color: #551A8B;
}

.cell-deals:empty {
  text-decoration: none;
}

/* Dark mode link colors for Deals column */
[data-theme="dark"] .cell-deals {
  color: #6db3f2;
}

[data-theme="dark"] .cell-deals:hover {
  color: #a3d1ff;
}

[data-theme="dark"] .cell-deals a {
  color: #6db3f2;
}

[data-theme="dark"] .cell-deals a:hover {
  color: #a3d1ff;
}

.cell-price {
  font-weight: var(--nv-weight-semibold);
  font-size: var(--nv-size-md);
  color: var(--nv-text-primary);
  white-space: nowrap;
  min-width: 60px;
  width: 6%;
}

.cell-brand {
  font-weight: var(--nv-weight-normal);
  min-width: 60px;
  width: 6%;
}

.cell-plan {
  max-width: 120px;
  width: 12%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cell-spec {
  font-family: var(--nv-font-mono);
  font-size: var(--nv-size-sm);
  color: var(--nv-text-primary);
  white-space: nowrap;
  width: 6%;
}

.cell-bandwidth {
  font-family: var(--nv-font-mono);
  font-size: var(--nv-size-sm);
  width: 8%;
}

.bw-primary {
  color: var(--nv-text-primary);
}

.bw-secondary {
  display: inline;
  font-size: var(--nv-size-xs);
  color: var(--nv-text-muted);
  margin-left: 4px;
}

.empty-state {
  padding: var(--nv-space-8);
  text-align: center;
  color: var(--nv-text-muted);
}

.empty-state-title {
  font-size: var(--nv-size-lg);
  font-weight: var(--nv-weight-medium);
  margin-bottom: var(--nv-space-2);
}

.empty-state-btn {
  margin-top: var(--nv-space-4);
  padding: var(--nv-space-2) var(--nv-space-4);
  font-size: var(--nv-size-sm);
  font-family: inherit;
  color: var(--nv-accent);
  background: var(--nv-accent-light);
  border: 1px solid var(--nv-accent);
  border-radius: var(--nv-radius-md);
  cursor: pointer;
}

.empty-state-btn:hover {
  background-color: var(--nv-accent);
  color: #fff;
}

@media (max-width: 768px) {
  .main-content {
    padding: var(--nv-space-3);
  }

  .data-table th,
  .data-table td {
    padding: var(--nv-space-2) var(--nv-space-3);
  }
}

/* FOOTER */
.site-footer {
  padding: 8px 12px;
  font-size: 11px;
  color: var(--nv-text-muted);
  border-top: 1px solid var(--nv-border);
  background-color: var(--nv-bg-primary);
  line-height: 1.5;
}