@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@400;500;600;700;800;900&display=swap');

:root {
  --bg-primary: #f8fafc; /* Crisp off-white background */
  --bg-secondary: #ffffff; /* White panels and cards */
  --border-color: #e2e8f0; /* Soft borders */
  
  --color-primary: #193369; /* PCI Blue */
  --color-secondary: #0d8b4c; /* PCI Green */
  --color-primary-light: rgba(25, 51, 105, 0.06);
  --color-secondary-light: rgba(13, 139, 76, 0.06);
  
  --text-main: #0f172a; /* Deep slate */
  --text-muted: #64748b; /* Mid slate grey */
  
  --font-family-title: 'Outfit', sans-serif;
  --font-family-body: 'Inter', sans-serif;
  
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.02);
  --shadow-md: 0 4px 12px -2px rgba(0, 0, 0, 0.03), 0 2px 6px -1px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 20px 25px -5px rgba(25, 51, 105, 0.03), 0 10px 10px -5px rgba(25, 51, 105, 0.03);
  
  --sidebar-width: 260px;
}

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

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

/* ====================================================
   MOBILE-FIRST BASE STYLES (DEFAULT VIEWPORT < 576px)
   ==================================================== */

/* Mobile Header Bar */
.mobile-header {
  display: flex;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 1.5rem;
  width: 100%;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 99;
  justify-content: space-between;
  align-items: center;
}

.menu-toggle {
  background: none;
  border: 1px solid var(--border-color);
  padding: 0.5rem;
  border-radius: 6px;
  cursor: pointer;
  color: var(--color-primary);
  font-size: 1.1rem;
  transition: var(--transition);
}

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

/* Sidebar Navigation (Hidden by default, slides out on mobile) */
.sidebar {
  width: var(--sidebar-width);
  height: 100vh;
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  position: fixed;
  top: 0;
  left: 0;
  display: flex;
  flex-direction: column;
  z-index: 195; /* Sits above overlay */
  transform: translateX(-100%);
  transition: var(--transition);
}

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

.brand {
  padding: 2rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.brand-icon {
  width: 32px;
  height: 32px;
  background-color: var(--color-primary);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-family: var(--font-family-title);
  font-weight: 800;
  font-size: 1.1rem;
}

.brand-name {
  font-family: var(--font-family-title);
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.nav-list {
  list-style: none;
  padding: 1.5rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex-grow: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.8rem 1rem;
  border-radius: 8px;
  color: var(--text-muted);
  font-weight: 600;
  cursor: pointer;
  font-size: 0.9rem;
  transition: var(--transition);
}

.nav-item i {
  width: 20px;
  font-size: 1rem;
  text-align: center;
  transition: var(--transition);
}

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

.nav-item:hover i {
  color: var(--color-primary);
}

.nav-item.active {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

.nav-item.active i {
  color: var(--color-primary);
}

.sidebar-footer {
  padding: 1.5rem 1rem;
  border-top: 1px solid var(--border-color);
}

.developer-tag {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  padding: 0.85rem;
  border-radius: 8px;
  text-align: center;
}

.developer-tag p {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
}

/* Main Content Area */
.main-content {
  margin-left: 0;
  width: 100%;
  padding: 5rem 1rem 2rem; /* Margin for sticky header */
  flex-grow: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  box-sizing: border-box;
}

.content-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-direction: column;
  gap: 1rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1.5rem;
}

.header-title h1 {
  font-family: var(--font-family-title);
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.03em;
  margin-bottom: 0.25rem;
}

.header-title p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.search-bar {
  position: relative;
  width: 100%;
}

.search-input {
  width: 100%;
  padding: 0.65rem 1rem 0.65rem 2.5rem;
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-main);
  outline: none;
  font-family: var(--font-family-body);
  font-size: 0.85rem;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.search-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(25, 51, 105, 0.08);
}

.search-icon {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
  font-size: 0.85rem;
}

/* Tab Panels */
.tab-panel {
  display: none;
  animation: tabFadeIn 0.3s ease-out;
}

.tab-panel.active {
  display: block;
}

@keyframes tabFadeIn {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* KPI Summary Widgets */
.kpi-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}

.kpi-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.kpi-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: rgba(25, 51, 105, 0.15);
}

.kpi-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.kpi-card:nth-child(odd) .kpi-icon {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

.kpi-card:nth-child(even) .kpi-icon {
  background-color: var(--color-secondary-light);
  color: var(--color-secondary);
}

.kpi-details h3 {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-bottom: 0.2rem;
}

.kpi-details .value {
  font-family: var(--font-family-title);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.summary-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.glass-panel {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.panel-header h2 {
  font-family: var(--font-family-title);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.panel-header p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Custom CSS Rates Bar Chart with Scroll */
.chart-container {
  height: 260px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding-top: 2rem;
  border-bottom: 2px solid var(--border-color);
  overflow-x: auto;
  gap: 12px;
  padding-bottom: 0.5rem;
  scrollbar-width: thin;
}

.chart-bar-wrapper {
  flex: 1 0 45px;
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100%;
  justify-content: flex-end;
  max-width: 45px;
}

.chart-bar {
  width: 100%;
  border-top-left-radius: 6px;
  border-top-right-radius: 6px;
  background: linear-gradient(180deg, var(--color-primary) 0%, rgba(25, 51, 105, 0.75) 100%);
  transition: height 0.8s cubic-bezier(0.19, 1, 0.22, 1);
  position: relative;
  cursor: pointer;
}

.chart-bar:hover {
  background: linear-gradient(180deg, var(--color-secondary) 0%, rgba(13, 139, 76, 0.75) 100%);
}

.chart-bar .tooltip {
  position: absolute;
  top: -42px;
  left: 50%;
  transform: translateX(-50%) scale(0.9);
  background-color: #0f172a;
  color: #ffffff;
  padding: 0.35rem 0.6rem;
  border-radius: 5px;
  font-size: 0.75rem;
  font-weight: 700;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
  box-shadow: var(--shadow-md);
  z-index: 10;
}

.chart-bar .tooltip::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 8px;
  height: 8px;
  background-color: #0f172a;
}

.chart-bar:hover .tooltip {
  opacity: 1;
  transform: translateX(-50%) scale(1);
}

.chart-label {
  margin-top: 0.75rem;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-muted);
  width: 100%;
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Featured Survey Projects list */
.featured-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  background-color: var(--bg-primary);
  transition: var(--transition);
  cursor: pointer;
}

.featured-item:hover {
  border-color: rgba(25, 51, 105, 0.2);
  background-color: var(--bg-secondary);
  box-shadow: var(--shadow-md);
  transform: translateX(3px);
}

.featured-info h4 {
  font-family: var(--font-family-title);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.15rem;
}

.featured-info p {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.featured-meta {
  text-align: right;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.2rem;
}

.featured-rate {
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--color-secondary);
}

.featured-action {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 0.2rem;
}

/* Sector Browser */
.sectors-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.sector-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  transition: var(--transition);
}

.sector-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(25, 51, 105, 0.15);
}

.sector-card-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.75rem;
}

.sector-card-title {
  font-family: var(--font-family-title);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary);
}

.sector-card-stats {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.sector-stat-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.sector-stat-row span:last-child {
  font-weight: 700;
  color: var(--text-main);
}

.btn-sector-browse {
  background-color: var(--color-primary);
  color: #ffffff;
  border: none;
  padding: 0.6rem;
  border-radius: 6px;
  font-family: var(--font-family-body);
  font-weight: 700;
  font-size: 0.8rem;
  cursor: pointer;
  text-align: center;
  transition: var(--transition);
}

.btn-sector-browse:hover {
  background-color: var(--color-secondary);
}

/* Project Survey Directory & Card Grids */
.project-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: stretch;
}

.project-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between; /* Equal height layout */
  height: 100%;
  transition: var(--transition);
  position: relative;
  cursor: pointer;
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: rgba(25, 51, 105, 0.2);
  box-shadow: var(--shadow-lg);
}

.card-header {
  display: flex;
  flex-direction: column;
}

.card-subtitle {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
  width: max-content;
}

.card-title {
  font-family: var(--font-family-title);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.01em;
}

.card-body p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Stats wrapper */
.card-stats {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1rem;
  background-color: var(--bg-primary);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.stat-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.75rem;
  border-bottom: 1px dashed var(--border-color);
  padding-bottom: 0.5rem;
}

.stat-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.stat-label {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.02em;
  flex-shrink: 0;
}

.stat-val {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
  text-align: right;
  word-break: break-word; /* Allows full wrapping of long details */
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-color);
  padding-top: 0.85rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.card-footer strong {
  color: var(--text-main);
}

.btn-details {
  background: none;
  border: none;
  color: var(--color-primary);
  font-weight: 700;
  font-family: var(--font-family-body);
  font-size: 0.8rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  transition: var(--transition);
}

.project-card:hover .btn-details {
  color: var(--color-secondary);
}

/* Compare Matrix */
.compare-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.compare-selector {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 1.25rem;
  border-radius: 12px;
}

.compare-pill {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  padding: 0.4rem 0.85rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: var(--transition);
  user-select: none;
}

.compare-pill:hover {
  background-color: #f1f5f9;
  color: var(--text-main);
}

.compare-pill.selected {
  background-color: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.compare-table-wrapper {
  overflow-x: auto;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.85rem;
}

.compare-table th, .compare-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  line-height: 1.5;
  min-width: 150px;
}

.compare-table th {
  background-color: #f8fafc;
  color: var(--color-primary);
  font-weight: 700;
}

.compare-table td:first-child {
  font-weight: 700;
  color: var(--text-muted);
  width: 180px;
  background-color: #f8fafc;
  position: sticky;
  left: 0;
  border-right: 1px solid var(--border-color);
  z-index: 2; /* Scroll index fix */
}

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

.card-link {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.card-link:hover {
  color: var(--color-secondary);
  text-decoration: underline;
}

/* Installment Calculator */
.calc-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.calc-form {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.form-control {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.6rem 0.85rem;
  font-family: var(--font-family-body);
  font-size: 0.85rem;
  color: var(--text-main);
  outline: none;
  background-color: #ffffff;
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(25, 51, 105, 0.08);
}

.form-control:disabled {
  background-color: var(--bg-primary);
  color: var(--text-muted);
  cursor: not-allowed;
}

.calc-results {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.calc-summary-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.calc-summary-card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.calc-summary-card.highlight {
  background-color: var(--color-primary-light);
  border-color: rgba(25, 51, 105, 0.15);
}

.calc-summary-card.highlight-green {
  background-color: var(--color-secondary-light);
  border-color: rgba(13, 139, 76, 0.15);
}

.calc-summary-label {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.calc-summary-value {
  font-family: var(--font-family-title);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-main);
}

.calc-summary-card.highlight .calc-summary-value {
  color: var(--color-primary);
}

.calc-summary-card.highlight-green .calc-summary-value {
  color: var(--color-secondary);
}

.schedule-table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

.schedule-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
  text-align: left;
}

.schedule-table th, .schedule-table td {
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid var(--border-color);
}

.schedule-table th {
  background-color: #f8fafc;
  color: var(--color-primary);
  font-weight: 700;
}

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

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

/* Slide-out Details Drawer (100% default width on mobile) */
.detail-drawer {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  height: 100vh;
  background-color: var(--bg-secondary);
  box-shadow: -8px 0 24px rgba(15, 23, 42, 0.06);
  border-left: 1px solid var(--border-color);
  z-index: 200;
  transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  padding: 2rem 1.25rem;
  overflow-y: auto;
}

.detail-drawer.open {
  right: 0;
}

.drawer-close {
  align-self: flex-start;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  margin-bottom: 1.5rem;
  transition: var(--transition);
}

.drawer-close:hover {
  background-color: #f1f5f9;
  color: var(--text-main);
}

.drawer-header {
  margin-bottom: 1.75rem;
}

.drawer-header h2 {
  font-family: var(--font-family-title);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  margin-bottom: 0.4rem;
}

.drawer-section {
  border-bottom: 1px solid var(--border-color);
  padding: 1.25rem 0;
}

.drawer-section:last-of-type {
  border-bottom: none;
}

.drawer-section h3 {
  font-family: var(--font-family-title);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
}

.drawer-grid {
  display: grid;
  grid-template-columns: 1fr; /* Stacks on mobile by default */
  gap: 1rem;
  margin-top: 0.85rem;
}

.data-box {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  padding: 0.85rem;
  border-radius: 8px;
}

.data-box-label {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.data-box-value {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.4;
}

.drawer-toggle-btn {
  background-color: var(--color-secondary-light);
  color: var(--color-secondary);
  border: 1px solid rgba(13, 139, 76, 0.15);
  padding: 0.3rem 0.65rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
}

.drawer-toggle-btn:hover {
  background-color: var(--color-secondary);
  color: #ffffff;
}

.drawer-table-wrapper {
  margin-top: 0.75rem;
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

.drawer-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.75rem;
  text-align: left;
}

.drawer-table th, .drawer-table td {
  padding: 0.55rem 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.drawer-table th {
  background-color: #f8fafc;
  color: var(--color-primary);
  font-weight: 700;
}

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

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

.drawer-footer-actions {
  margin-top: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.btn-drawer-calc {
  background-color: var(--color-secondary);
  color: #ffffff;
  border: none;
  padding: 0.75rem;
  border-radius: 8px;
  font-family: var(--font-family-body);
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  transition: var(--transition);
  box-shadow: 0 4px 12px rgba(13, 139, 76, 0.12);
}

.btn-drawer-calc:hover {
  background-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(25, 51, 105, 0.12);
}

.btn-drawer-ref {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  background-color: var(--color-primary);
  color: #ffffff;
  padding: 0.75rem;
  border-radius: 8px;
  font-family: var(--font-family-body);
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(25, 51, 105, 0.12);
  transition: var(--transition);
  text-align: center;
  width: 100%;
}

.btn-drawer-ref:hover {
  background-color: var(--color-secondary);
  box-shadow: 0 4px 12px rgba(13, 139, 76, 0.15);
}

/* Unified Backdrop Overlay */
.drawer-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(15, 23, 42, 0.2);
  backdrop-filter: blur(4px);
  z-index: 190;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.drawer-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}


/* ====================================================
   TABLET RESPONSIVENESS OVERRIDES (MIN-WIDTH: 577px)
   ==================================================== */
@media (min-width: 577px) {
  .header-title h1 {
    font-size: 1.65rem;
  }
  
  .header-title p {
    font-size: 0.9rem;
  }
  
  .kpi-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .sectors-grid, .project-list {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .drawer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .drawer-grid-full {
    grid-column: span 2;
  }
  
  .calc-summary-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .detail-drawer {
    width: 500px;
    right: -520px;
    padding: 2.5rem 1.75rem;
  }
}


/* ====================================================
   DESKTOP RESPONSIVENESS OVERRIDES (MIN-WIDTH: 993px)
   ==================================================== */
@media (min-width: 993px) {
  .mobile-header {
    display: none;
  }
  
  .sidebar {
    transform: translateX(0);
    z-index: 100; /* Normal index on desktop */
  }
  
  .main-content {
    margin-left: var(--sidebar-width);
    width: calc(100% - var(--sidebar-width));
    padding: 2.5rem 3rem;
  }
  
  .content-header {
    flex-direction: row;
    align-items: center;
  }
  
  .header-title h1 {
    font-size: 1.85rem;
  }
  
  .header-title p {
    font-size: 0.95rem;
  }
  
  .search-bar {
    width: 320px;
  }
  
  .kpi-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .summary-section {
    grid-template-columns: 1.6fr 1fr;
  }
  
  .sectors-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }
  
  .project-list {
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  }
  
  .calc-container {
    grid-template-columns: 1fr 1.3fr;
  }
}