/* ==========================================================================
   Dental Health & Workforce Calculator - Stylesheet
   ========================================================================== */

:root {
  --calc-bg: #f8fafc;
  --calc-card-bg: #ffffff;
  --calc-primary: #0a66c2;
  --calc-primary-hover: #084e96;
  --calc-primary-soft: #e8f3fc;
  --calc-accent: #057642;
  --calc-accent-soft: #e6f4ea;
  --calc-warning: #b45309;
  --calc-warning-soft: #fef3c7;
  --calc-rose: #be123c;
  --calc-rose-soft: #ffe4e6;
  --calc-border: #e2e8f0;
  --calc-border-focus: #0a66c2;
  --calc-text-main: #1e293b;
  --calc-text-muted: #64748b;
  --calc-text-dim: #94a3b8;
  --calc-radius: 8px;
  --calc-radius-lg: 12px;
  --calc-shadow: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.03);
  --calc-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
}

body.calc-body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--calc-bg);
  color: var(--calc-text-main);
  margin: 0;
  padding: 0;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Header & Top Bar */
.calc-header {
  background: #ffffff;
  border-bottom: 1px solid var(--calc-border);
  position: relative;
  z-index: 100;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
  flex-shrink: 0;
}

.calc-header-inner {
  max-width: 1560px;
  margin: 0 auto;
  padding: 10px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.calc-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.calc-brand-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--calc-primary-soft);
  color: var(--calc-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  border: 1px solid rgba(10, 102, 194, 0.2);
}

.calc-brand-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #0f172a;
  margin: 0;
  line-height: 1.2;
}

.calc-brand-sub {
  font-size: 0.78rem;
  color: var(--calc-text-muted);
  margin-top: 2px;
}

.calc-nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.calc-nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid var(--calc-border);
  background: #ffffff;
  color: var(--calc-text-main);
  text-decoration: none;
  cursor: pointer;
  transition: all 0.15s ease;
}

.calc-nav-btn:hover {
  background: #f1f5f9;
  border-color: #cbd5e1;
  color: var(--calc-primary);
}

.calc-nav-btn.primary {
  background: var(--calc-primary);
  color: #ffffff;
  border-color: var(--calc-primary);
}

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

.calc-nav-btn.active {
  background: var(--calc-primary-soft);
  color: var(--calc-primary);
  border-color: rgba(10, 102, 194, 0.3);
  font-weight: 700;
}

/* Main Container Layout with Independent Scrolling Panes */
.calc-main-container {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  max-width: 1560px;
  width: 100%;
  margin: 0 auto;
  padding: 12px 24px 12px 24px;
  box-sizing: border-box;
  overflow: hidden;
}

#countryBanner {
  flex-shrink: 0;
  margin-bottom: 12px !important;
}

.calc-layout-grid {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: 490px 1fr;
  gap: 20px;
  align-items: stretch;
  overflow: hidden;
}

/* Independent Scrollable Left Panel */
.calc-input-panel {
  height: 100%;
  overflow-y: auto;
  overflow-x: hidden;
  padding-right: 10px;
  padding-bottom: 24px;
  box-sizing: border-box;
  scrollbar-width: thin;
  scrollbar-color: #cbd5e1 #f1f5f9;
}

/* Independent Scrollable Right Panel */
.calc-results-panel {
  height: 100%;
  overflow-y: auto;
  overflow-x: hidden;
  padding-right: 10px;
  padding-bottom: 24px;
  box-sizing: border-box;
  scrollbar-width: thin;
  scrollbar-color: #cbd5e1 #f1f5f9;
}

/* Custom Sleek Scrollbar Styles */
.calc-input-panel::-webkit-scrollbar,
.calc-results-panel::-webkit-scrollbar {
  width: 7px;
}

.calc-input-panel::-webkit-scrollbar-track,
.calc-results-panel::-webkit-scrollbar-track {
  background: #f1f5f9;
  border-radius: 4px;
}

.calc-input-panel::-webkit-scrollbar-thumb,
.calc-results-panel::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 4px;
  transition: background 0.2s ease;
}

.calc-input-panel::-webkit-scrollbar-thumb:hover,
.calc-results-panel::-webkit-scrollbar-thumb:hover {
  background: var(--calc-primary);
}

.calc-input-panel .calc-card,
.calc-results-panel .calc-card {
  margin-bottom: 16px;
}

.calc-input-panel .calc-card:last-child,
.calc-results-panel .calc-card:last-child {
  margin-bottom: 0;
}

@media (max-width: 1080px) {
  body.calc-body {
    height: auto;
    overflow-y: auto;
    display: block;
  }

  .calc-header {
    position: sticky;
    top: 0;
  }

  .calc-main-container {
    height: auto;
    overflow: visible;
    display: block;
    padding: 14px 16px 40px 16px;
  }

  .calc-layout-grid {
    grid-template-columns: 1fr;
    height: auto;
    overflow: visible;
    display: block;
  }

  .calc-input-panel,
  .calc-results-panel {
    height: auto;
    overflow-y: visible;
    padding-right: 0;
    padding-bottom: 0;
  }

  .calc-input-panel {
    margin-bottom: 24px;
  }
}

/* Card Containers */
.calc-card {
  background: var(--calc-card-bg);
  border: 1px solid var(--calc-border);
  border-radius: var(--calc-radius-lg);
  padding: 18px 20px;
  box-shadow: var(--calc-shadow);
  margin-bottom: 20px;
}

.calc-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--calc-border);
}

.calc-card-title {
  font-size: 1.02rem;
  font-weight: 700;
  color: #0f172a;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.calc-card-subtitle {
  font-size: 0.8rem;
  color: var(--calc-text-muted);
  margin-top: 4px;
}

/* Form Controls */
.calc-form-group {
  margin-bottom: 16px;
}

.calc-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.84rem;
  font-weight: 600;
  color: #334155;
  margin-bottom: 6px;
}

.calc-label-badge {
  font-size: 0.72rem;
  font-weight: 700;
  background: var(--calc-primary-soft);
  color: var(--calc-primary);
  padding: 2px 8px;
  border-radius: 12px;
}

.calc-select, .calc-input {
  width: 100%;
  padding: 9px 12px;
  font-size: 0.88rem;
  border: 1px solid var(--calc-border);
  border-radius: 6px;
  background-color: #ffffff;
  color: var(--calc-text-main);
  box-sizing: border-box;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.calc-select:focus, .calc-input:focus {
  border-color: var(--calc-primary);
  box-shadow: 0 0 0 3px rgba(10, 102, 194, 0.15);
}

.calc-select-highlight {
  border-color: var(--calc-primary);
  background: #fdfefe;
  font-weight: 600;
}

.calc-help-text {
  font-size: 0.74rem;
  color: var(--calc-text-muted);
  margin-top: 4px;
}

.calc-input-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.calc-input-grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 10px;
}

@media (max-width: 640px) {
  .calc-input-grid, .calc-input-grid-3 {
    grid-template-columns: 1fr;
  }
}

.calc-preset-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.calc-preset-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid var(--calc-border);
  border-radius: 6px;
  background: #ffffff;
  color: #334155;
  cursor: pointer;
  transition: all 0.15s ease;
}

.calc-preset-btn:hover {
  border-color: var(--calc-primary);
  color: var(--calc-primary);
  background: var(--calc-primary-soft);
}

.calc-preset-btn.active {
  background: var(--calc-primary);
  border-color: var(--calc-primary);
  color: #ffffff;
  font-weight: 700;
}

/* Radio Tier Pickers */
.calc-tier-picker {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.calc-tier-option {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 14px;
  border: 1px solid var(--calc-border);
  border-radius: 8px;
  background: #ffffff;
  cursor: pointer;
  transition: all 0.15s ease;
}

.calc-tier-option:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
}

.calc-tier-option.active {
  background: var(--calc-primary-soft);
  border-color: var(--calc-primary);
  box-shadow: 0 1px 3px rgba(10, 102, 194, 0.1);
}

.calc-tier-radio {
  margin-top: 3px;
  accent-color: var(--calc-primary);
  cursor: pointer;
}

.calc-tier-content {
  flex: 1;
}

.calc-tier-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.calc-tier-title {
  font-size: 0.86rem;
  font-weight: 700;
  color: #1e293b;
}

.calc-tier-tag {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  background: #e2e8f0;
  color: #475569;
}

.calc-tier-tag.recommended {
  background: var(--calc-accent-soft);
  color: var(--calc-accent);
}

.calc-tier-desc {
  font-size: 0.74rem;
  color: var(--calc-text-muted);
  margin-top: 2px;
}

/* Button Row */
.calc-btn-row {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

.calc-btn {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
}

.calc-btn-primary {
  background: var(--calc-primary);
  color: #ffffff;
}

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

.calc-btn-outline {
  background: #ffffff;
  border-color: var(--calc-border);
  color: var(--calc-text-main);
}

.calc-btn-outline:hover {
  background: #f1f5f9;
  border-color: #cbd5e1;
}

.calc-btn-success {
  background: var(--calc-accent);
  color: #ffffff;
}

.calc-btn-success:hover {
  background: #046235;
}

/* Results KPI Grid */
.calc-kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin-bottom: 22px;
}

.calc-kpi-card {
  background: #ffffff;
  border: 1px solid var(--calc-border);
  border-radius: var(--calc-radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  transition: transform 0.15s ease;
}

.calc-kpi-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--calc-shadow-md);
}

.calc-kpi-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--calc-primary);
}

.calc-kpi-card.green::before { background: var(--calc-accent); }
.calc-kpi-card.amber::before { background: var(--calc-warning); }
.calc-kpi-card.rose::before { background: var(--calc-rose); }
.calc-kpi-card.purple::before { background: #8b5cf6; }

.calc-kpi-title {
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--calc-text-muted);
}

.calc-kpi-value {
  font-size: 1.65rem;
  font-weight: 800;
  color: #0f172a;
  margin: 6px 0 2px 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.calc-kpi-sub {
  font-size: 0.75rem;
  color: var(--calc-text-muted);
}

/* Comparative Table (Inspired by CPHR-MANT) */
.calc-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--calc-border);
  border-radius: var(--calc-radius);
  background: #ffffff;
  margin-bottom: 20px;
}

.calc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.84rem;
  text-align: left;
}

.calc-table th {
  background: #f1f5f9;
  color: #334155;
  font-weight: 700;
  padding: 10px 14px;
  border-bottom: 2px solid var(--calc-border);
  font-size: 0.78rem;
  letter-spacing: 0.3px;
}

.calc-table td {
  padding: 10px 14px;
  border-bottom: 1px solid #f1f5f9;
  color: #1e293b;
}

.calc-table tr:hover td {
  background: #f8fafc;
}

.calc-table tr.calc-row-highlight td {
  background: var(--calc-primary-soft);
  font-weight: 600;
}

.calc-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.74rem;
  font-weight: 700;
}

.calc-badge-green {
  background: var(--calc-accent-soft);
  color: var(--calc-accent);
}

.calc-badge-amber {
  background: var(--calc-warning-soft);
  color: var(--calc-warning);
}

.calc-badge-blue {
  background: var(--calc-primary-soft);
  color: var(--calc-primary);
}

/* Modals */
.calc-modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

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

.calc-modal {
  background: #ffffff;
  border-radius: var(--calc-radius-lg);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  width: 100%;
  max-width: 720px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: translateY(10px);
  transition: transform 0.2s ease;
}

.calc-modal-backdrop.active .calc-modal {
  transform: translateY(0);
}

.calc-modal-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--calc-border);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  background: #f8fafc;
}

.calc-modal-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #0f172a;
  margin: 0;
}

.calc-modal-close {
  background: transparent;
  border: none;
  font-size: 1.4rem;
  line-height: 1;
  color: var(--calc-text-muted);
  cursor: pointer;
  padding: 0 4px;
}

.calc-modal-close:hover {
  color: #0f172a;
}

.calc-modal-body {
  padding: 24px;
  overflow-y: auto;
  font-size: 0.88rem;
  line-height: 1.6;
}

.calc-modal-footer {
  padding: 14px 24px;
  border-top: 1px solid var(--calc-border);
  background: #f8fafc;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* Upload Dropzone */
.calc-dropzone {
  border: 2px dashed #cbd5e1;
  border-radius: 10px;
  padding: 28px 20px;
  text-align: center;
  background: #f8fafc;
  cursor: pointer;
  transition: all 0.15s ease;
  margin-top: 14px;
}

.calc-dropzone:hover, .calc-dropzone.dragover {
  border-color: var(--calc-primary);
  background: var(--calc-primary-soft);
}

.calc-dropzone-icon {
  font-size: 2rem;
  color: var(--calc-primary);
  margin-bottom: 8px;
}

.calc-dropzone-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #1e293b;
  margin-bottom: 4px;
}

.calc-dropzone-sub {
  font-size: 0.78rem;
  color: var(--calc-text-muted);
}