/* 
  index.css - Styling for O'Brien360 PDF to DWG Tool
  Theme: Modern Engineering Workspace, Crisp Vector CAD Viewport, OB360 Brand Palette
*/

:root {
  --ob-green: #8CBD3A;
  --ob-green-hover: #7aa82f;
  --ob-green-light: #f2f8ea;
  --ob-blue: #4D76AD;
  --ob-blue-hover: #3d6191;
  --ob-blue-light: #edf3fa;
  --ob-dark: #0F172A;
  --ob-slate: #1E293B;
  --ob-border: #E2E8F0;
  --ob-bg: #F8FAFC;
  --ob-card-bg: #FFFFFF;
  --ob-text-muted: #64748B;
  --ob-text-main: #1E293B;
  --ob-radius: 12px;
  --ob-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.08);
  --ob-shadow-lg: 0 10px 30px -4px rgba(15, 23, 42, 0.12);
  
  /* CAD Viewport */
  --cad-bg: #0F172A;
  --cad-grid: #1E293B;
  --cad-axis: #334155;
  --cad-wall: #F8FAFC;
  --cad-poly: rgba(140, 189, 58, 0.25);
  --cad-text: #F8FAFC;
}

/* Light CAD theme override when toggled */
body.cad-light {
  --cad-bg: #F8FAFC;
  --cad-grid: #E2E8F0;
  --cad-axis: #CBD5E1;
  --cad-wall: #0F172A;
  --cad-poly: rgba(77, 118, 173, 0.2);
  --cad-text: #0F172A;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--ob-bg);
  color: var(--ob-text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.5;
}

/* Brand Stripe across top */
.brand-stripe {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(90deg, #8CBD3A 0%, #4D76AD 33%, #62B8A4 66%, #793E6D 100%);
  z-index: 1000;
}

/* Header */
.app-header {
  background: #FFFFFF;
  border-bottom: 1px solid var(--ob-border);
  padding: 16px 24px;
  margin-top: 5px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.03);
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.portal-back {
  font-size: 13px;
  color: var(--ob-blue);
  text-decoration: none;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 6px;
  background: var(--ob-blue-light);
  transition: all 0.2s;
}

.portal-back:hover {
  background: #e1ebf7;
  color: var(--ob-blue-hover);
}

.brand-badge {
  display: flex;
  align-items: center;
  gap: 14px;
}

.header-logo {
  height: 32px;
  width: auto;
}

.suite-title {
  font-family: 'Raleway', sans-serif;
  font-weight: 800;
  font-size: 20px;
  color: #0F172A;
  letter-spacing: -0.3px;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.badge-version {
  background: #F1F5F9;
  color: #475569;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Main Container */
.app-container {
  max-width: 1400px;
  margin: 24px auto 40px;
  padding: 0 24px;
  flex: 1;
  width: 100%;
}

/* Workflow Stepper */
.workflow-stepper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  background: #FFFFFF;
  padding: 16px 28px;
  border-radius: var(--ob-radius);
  border: 1px solid var(--ob-border);
  box-shadow: var(--ob-shadow);
}

.step-node {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ob-text-muted);
  font-size: 13px;
  font-weight: 600;
  transition: all 0.2s;
}

.step-num {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: #E2E8F0;
  color: #64748B;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
}

.step-node.active {
  color: var(--ob-dark);
}

.step-node.active .step-num {
  background: var(--ob-green);
  color: #FFFFFF;
  box-shadow: 0 0 0 4px var(--ob-green-light);
}

.step-node.completed .step-num {
  background: var(--ob-blue);
  color: #FFFFFF;
}

.step-line {
  flex: 1;
  height: 2px;
  background: #E2E8F0;
  margin: 0 16px;
}

.step-line.completed {
  background: var(--ob-green);
}

/* Card Sections */
.card {
  background: var(--ob-card-bg);
  border: 1px solid var(--ob-border);
  border-radius: var(--ob-radius);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--ob-shadow);
  transition: box-shadow 0.2s ease;
}

.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 20px;
}

.card-header h2 {
  font-family: 'Raleway', sans-serif;
  font-size: 18px;
  font-weight: 800;
  color: #0F172A;
  margin-bottom: 4px;
}

.subtitle {
  color: var(--ob-text-muted);
  font-size: 13px;
}

.header-actions {
  display: flex;
  gap: 10px;
}

/* Buttons */
.btn-primary {
  background: linear-gradient(135deg, var(--ob-green), var(--ob-green-hover));
  color: #FFFFFF;
  border: none;
  border-radius: 8px;
  padding: 10px 18px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 3px 10px rgba(140, 189, 58, 0.3);
  transition: all 0.15s ease;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 5px 14px rgba(140, 189, 58, 0.4);
}

.btn-secondary {
  background: #FFFFFF;
  color: var(--ob-dark);
  border: 1px solid #CBD5E1;
  border-radius: 8px;
  padding: 9px 16px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.15s ease;
}

.btn-secondary:hover {
  background: #F8FAFC;
  border-color: #94A3B8;
}

.btn-ghost {
  background: transparent;
  border: none;
  color: var(--ob-text-muted);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  padding: 6px 12px;
  border-radius: 6px;
  transition: all 0.15s ease;
}

.btn-ghost:hover {
  background: #F1F5F9;
  color: var(--ob-dark);
}

.btn-icon {
  background: #FFFFFF;
  border: 1px solid var(--ob-border);
  color: var(--ob-dark);
  border-radius: 6px;
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-weight: 700;
  font-size: 14px;
  transition: all 0.15s;
}

.btn-icon:hover {
  background: #F1F5F9;
  border-color: #94A3B8;
}

/* Drop Zone */
.drop-zone {
  border: 2px dashed #CBD5E1;
  border-radius: var(--ob-radius);
  padding: 44px 24px;
  text-align: center;
  background: #FAFAFC;
  cursor: pointer;
  transition: all 0.2s ease;
}

.drop-zone.dragover, .drop-zone:hover {
  border-color: var(--ob-green);
  background: var(--ob-green-light);
}

.drop-icon {
  margin-bottom: 12px;
}

.drop-zone h3 {
  font-size: 16px;
  font-weight: 700;
  color: #0F172A;
  margin-bottom: 6px;
}

.drop-hint {
  font-size: 13px;
  color: var(--ob-text-muted);
  margin-bottom: 10px;
}

.btn-browse {
  background: none;
  border: none;
  color: var(--ob-blue);
  font-weight: 600;
  text-decoration: underline;
  cursor: pointer;
  font-size: 13px;
}

.drop-meta {
  font-size: 12px;
  color: #94A3B8;
}

.file-input-hidden {
  display: none;
}

/* File Info Preview */
.file-info-card {
  margin-top: 16px;
  padding: 12px 18px;
  background: #F8FAFC;
  border: 1px solid var(--ob-border);
  border-radius: 8px;
}

.file-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.file-name-group {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 14px;
  color: var(--ob-dark);
}

.file-stats {
  display: flex;
  gap: 8px;
}

.tag-badge {
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
}

.tag-blue {
  background: var(--ob-blue-light);
  color: var(--ob-blue);
}

.tag-green {
  background: var(--ob-green-light);
  color: #4b7811;
}

/* Config Grid */
.config-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
}

.config-card {
  border: 1px solid var(--ob-border);
  border-radius: 10px;
  background: #FAFAFC;
  padding: 18px;
}

.config-card-title {
  font-weight: 700;
  font-size: 14px;
  color: #0F172A;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon-indicator {
  font-size: 16px;
}

.form-group {
  margin-bottom: 14px;
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: #475569;
  margin-bottom: 6px;
}

.label-with-val {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.val-badge {
  background: var(--ob-blue-light);
  color: var(--ob-blue);
  font-size: 11px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
}

.form-select, .form-input {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid #CBD5E1;
  border-radius: 6px;
  font-size: 13px;
  color: #0F172A;
  background: #FFFFFF;
  outline: none;
  transition: border-color 0.15s;
}

.form-select:focus, .form-input:focus {
  border-color: var(--ob-blue);
  box-shadow: 0 0 0 3px rgba(77, 118, 173, 0.15);
}

.form-range {
  width: 100%;
  accent-color: var(--ob-blue);
  cursor: pointer;
}

.input-with-unit {
  position: relative;
  display: flex;
  align-items: center;
}

.input-unit {
  position: absolute;
  right: 12px;
  font-size: 12px;
  color: #94A3B8;
  pointer-events: none;
  font-weight: 500;
}

.field-hint {
  display: block;
  font-size: 11px;
  color: #94A3B8;
  margin-top: 4px;
}

.form-row {
  display: flex;
  gap: 12px;
}

.form-row .form-group {
  flex: 1;
}

.scale-detected-info {
  margin-top: 10px;
  padding: 8px 10px;
  background: #FFFFFF;
  border: 1px solid var(--ob-border);
  border-radius: 6px;
  font-size: 12px;
  display: flex;
  gap: 6px;
}

.info-label {
  color: #64748B;
  font-weight: 600;
}

.info-value {
  color: #0F172A;
  font-weight: 600;
}

.level-order-container {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 6px;
}

.level-order-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  background: #FFFFFF;
  border: 1px solid var(--ob-border);
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 600;
}

.level-order-left {
  display: flex;
  align-items: center;
  flex: 1;
  gap: 8px;
  min-width: 0;
}

.level-order-name {
  min-width: 72px;
}

.level-base-select {
  width: min(190px, 42vw);
  min-width: 110px;
  padding: 5px 8px;
  border: 1px solid #CBD5E1;
  border-radius: 5px;
  background: #FFFFFF;
  color: #0F172A;
  font: inherit;
  font-weight: 500;
}

.conversion-sequence-preview {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}

.conversion-sequence-step {
  padding: 4px 8px;
  border: 1px solid var(--ob-border);
  border-radius: 4px;
  background: #FFFFFF;
  color: #334155;
  font-size: 11px;
  font-weight: 600;
}

.conversion-sequence-error {
  color: #B91C1C;
  font-size: 12px;
}

.level-order-seq {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #F1F5F9;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
}

.level-order-actions {
  display: flex;
  gap: 4px;
}

.btn-move {
  background: none;
  border: 1px solid #E2E8F0;
  border-radius: 4px;
  width: 22px;
  height: 22px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: #64748B;
}

.btn-move:hover {
  background: #F1F5F9;
  color: #0F172A;
}

/* CAD Viewer Toolbar */
.viewer-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: #F8FAFC;
  border: 1px solid var(--ob-border);
  border-radius: 8px 8px 0 0;
  padding: 10px 16px;
  border-bottom: none;
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.toolbar-label {
  font-size: 12px;
  font-weight: 700;
  color: #475569;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Segmented Button */
.btn-segmented {
  display: inline-flex;
  background: #E2E8F0;
  padding: 2px;
  border-radius: 6px;
}

.seg-btn {
  background: transparent;
  border: none;
  font-size: 12px;
  font-weight: 600;
  color: #475569;
  padding: 5px 12px;
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.seg-btn.active {
  background: #FFFFFF;
  color: var(--ob-dark);
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.level-pills {
  display: flex;
  gap: 6px;
}

.pill-btn {
  background: #FFFFFF;
  border: 1px solid var(--ob-border);
  border-radius: 14px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 600;
  color: #475569;
  cursor: pointer;
  transition: all 0.15s;
}

.pill-btn.active {
  background: var(--ob-blue);
  color: #FFFFFF;
  border-color: var(--ob-blue);
}

.overlay-checks {
  display: flex;
  gap: 10px;
}

.overlay-chk-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}

.color-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.toolbar-layers {
  font-size: 12px;
  gap: 12px;
}

.layer-chk {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  font-size: 12px;
  color: #475569;
}

/* Toggle Switch */
.toggle-switch-wrapper {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: 8px;
}

.switch {
  position: relative;
  display: inline-block;
  width: 30px;
  height: 18px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: #CBD5E1;
  transition: .2s;
  border-radius: 18px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 14px;
  width: 14px;
  left: 2px;
  bottom: 2px;
  background-color: white;
  transition: .2s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: #F59E0B;
}

input:checked + .slider:before {
  transform: translateX(12px);
}

.switch-label {
  font-size: 11px;
  font-weight: 600;
  color: #475569;
}

/* CAD Viewport */
.cad-viewport-container {
  position: relative;
  width: 100%;
  height: 580px;
  background-color: var(--cad-bg);
  border: 1px solid var(--ob-border);
  border-radius: 0 0 8px 8px;
  overflow: hidden;
}

.cad-canvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: crosshair;
}

.canvas-statusbar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(15, 23, 42, 0.88);
  backdrop-filter: blur(6px);
  color: #E2E8F0;
  padding: 6px 16px;
  font-size: 12px;
  font-family: 'JetBrains Mono', monospace;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.status-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.status-sep {
  color: #475569;
}

.status-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.canvas-tooltip {
  position: absolute;
  display: none;
  background: rgba(15, 23, 42, 0.95);
  color: #FFFFFF;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 12px;
  pointer-events: none;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  border: 1px solid rgba(255,255,255,0.15);
  z-index: 100;
}

.canvas-legend {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(4px);
  padding: 8px 12px;
  border-radius: 6px;
  color: #E2E8F0;
  font-size: 11px;
  border: 1px solid rgba(255,255,255,0.1);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

/* QA Dashboard */
.qa-dashboard {
  margin-top: 24px;
}

.qa-cards-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.qa-stat-card {
  background: #FAFAFC;
  border: 1px solid var(--ob-border);
  border-radius: 8px;
  padding: 16px;
  text-align: center;
}

.stat-num {
  font-size: 22px;
  font-weight: 800;
  font-family: 'Raleway', sans-serif;
  color: #0F172A;
  margin-bottom: 2px;
}

.stat-desc {
  font-size: 12px;
  color: var(--ob-text-muted);
  font-weight: 500;
}

.text-success { color: #16A34A !important; }
.text-info { color: #2563EB !important; }

/* Table */
.qa-table-wrapper {
  border: 1px solid var(--ob-border);
  border-radius: 8px;
  background: #FFFFFF;
  overflow: hidden;
}

.table-header-title {
  padding: 12px 16px;
  font-size: 13px;
  font-weight: 700;
  color: #0F172A;
  border-bottom: 1px solid var(--ob-border);
  background: #F8FAFC;
}

.table-scroll {
  max-height: 280px;
  overflow-y: auto;
}

.qa-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.qa-table th {
  background: #F1F5F9;
  color: #475569;
  font-weight: 600;
  text-align: left;
  padding: 8px 12px;
  position: sticky;
  top: 0;
}

.qa-table td {
  padding: 8px 12px;
  border-bottom: 1px solid #F1F5F9;
  color: #1E293B;
}

.qa-table tr:hover {
  background: #F8FAFC;
  cursor: pointer;
}

.qa-table tr.selected {
  background: var(--ob-green-light);
}

/* Export Cards Grid */
.export-options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
}

.export-card {
  position: relative;
  background: #FAFAFC;
  border: 1px solid var(--ob-border);
  border-radius: 10px;
  padding: 24px;
  display: flex;
  flex-direction: column;
}

.export-card.featured {
  background: #FFFFFF;
  border: 2px solid var(--ob-green);
  box-shadow: 0 4px 16px rgba(140, 189, 58, 0.15);
}

.export-card-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 12px;
  background: var(--ob-green-light);
  color: #4b7811;
}

.export-icon {
  font-size: 28px;
  margin-bottom: 12px;
}

.export-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: #0F172A;
  margin-bottom: 8px;
}

.export-card p {
  font-size: 13px;
  color: var(--ob-text-muted);
  line-height: 1.5;
  margin-bottom: 20px;
  flex: 1;
}

.export-btn-group {
  display: flex;
  gap: 10px;
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: 20px;
}

.modal-card {
  background: #FFFFFF;
  border-radius: 12px;
  max-width: 600px;
  width: 100%;
  box-shadow: var(--ob-shadow-lg);
  overflow: hidden;
}

.modal-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--ob-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-size: 17px;
  font-weight: 700;
  color: #0F172A;
}

.btn-close {
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: #94A3B8;
}

.btn-close:hover {
  color: #0F172A;
}

.modal-body {
  padding: 24px;
}

.rules-list {
  padding-left: 20px;
  font-size: 13px;
  color: #334155;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Loading Overlay */
.loading-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(5px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 3000;
  color: #FFFFFF;
}

.loading-spinner {
  width: 50px;
  height: 50px;
  border: 4px solid rgba(255, 255, 255, 0.2);
  border-top-color: var(--ob-green);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 16px;
}

.loading-message {
  font-size: 15px;
  font-weight: 600;
  font-family: 'Raleway', sans-serif;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Footer */
.app-footer {
  text-align: center;
  padding: 20px;
  font-size: 12px;
  color: #94A3B8;
  border-top: 1px solid var(--ob-border);
  background: #FFFFFF;
  margin-top: auto;
}

/* Responsive */
@media (max-width: 900px) {
  .cad-viewport-container {
    height: 420px;
  }
  .workflow-stepper {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .step-line {
    display: none;
  }
}