/* ==============================================================================
   Universal Web App Benchmarking Harness - Layout & Core Tokens (v2.3.0)
   Default: Light Mode (WCAG AAA Contrast) with Top Progress Engine & Modals
   ============================================================================== */

:root {
  /* LIGHT MODE PALETTE (Default) */
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --border-color: #cbd5e1;
  --border-focus: #1d4ed8;
  --text-main: #0f172a;
  --text-muted: #475569;
  --accent-blue: #1d4ed8;
  --accent-blue-hover: #1e40af;
  --accent-green: #047857;
  --accent-red: #b91c1c;
  --accent-amber: #b45309;
  --pane-tag-bg: rgba(15, 23, 42, 0.88);
  --pane-tag-text: #ffffff;
  --viewport-bg: #f8fafc;
  --card-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.08), 0 1px 2px 0 rgba(0, 0, 0, 0.04);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

[data-theme="dark"] {
  /* DARK MODE PALETTE */
  --bg-primary: #090d16;
  --bg-secondary: #121824;
  --bg-tertiary: #1c2436;
  --border-color: #27314a;
  --border-focus: #38bdf8;
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --accent-blue: #38bdf8;
  --accent-blue-hover: #0284c7;
  --accent-green: #10b981;
  --accent-red: #f87171;
  --accent-amber: #fbbf24;
  --pane-tag-bg: rgba(28, 36, 54, 0.92);
  --pane-tag-text: #f1f5f9;
  --viewport-bg: #090d16;
  --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
}

body, .harness-header, .workflow-sidebar, .metric-card, .diff-container, .workflow-step {
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-main);
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Top-Level Fixed Progress & ETA Engine */
.top-progress-engine {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 30px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  display: flex;
  flex-direction: column;
}

.top-progress-bar-container {
  width: 100%;
  height: 4px;
  background: var(--bg-tertiary);
  overflow: hidden;
}

.top-progress-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--accent-blue);
  box-shadow: 0 0 8px var(--accent-blue);
  transition: width 0.25s ease-out;
}

.top-progress-meta {
  flex: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 16px;
  font-size: 11px;
  font-family: var(--font-mono);
}

.top-state-pill {
  font-weight: 700;
  color: var(--accent-blue);
  letter-spacing: 0.5px;
}

.top-clocks {
  display: flex;
  gap: 16px;
  color: var(--text-muted);
}

/* Main Harness Header */
.harness-header {
  margin-top: 30px;
  height: 60px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
  flex-shrink: 0;
}

.harness-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.status-indicator {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 8px var(--accent-green);
}

.harness-brand h1 {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.version-tag {
  font-size: 11px;
  padding: 2px 6px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  color: var(--accent-blue);
  font-family: var(--font-mono);
}

.harness-header-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

.theme-toggle-btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color 0.15s ease;
}

.theme-toggle-btn:hover {
  border-color: var(--border-focus);
}

.theme-icon {
  width: 18px;
  height: 18px;
}

.icon-hidden {
  display: none;
}

/* Workspace Layout */
.harness-workspace {
  flex: 1;
  display: flex;
  height: calc(100vh - 90px);
}

/* Guided Workflow Sidebar */
.workflow-sidebar {
  width: 390px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 16px;
  gap: 14px;
  overflow-y: auto;
  flex-shrink: 0;
}

.workflow-step {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.workflow-step.active {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 1px var(--border-focus);
}

.step-header {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.step-number {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--border-color);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
}

.workflow-step.active .step-number {
  background: var(--accent-blue);
  color: #ffffff;
}

.step-title-group h2 {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.step-title-group p {
  font-size: 11px;
  color: var(--text-muted);
}

.step-content {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Form Controls */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.form-group label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
}

.form-input, .form-select {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 8px 10px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  outline: none;
  transition: border-color 0.15s ease;
}

.form-input:focus, .form-select:focus {
  border-color: var(--border-focus);
}

.form-input.input-error {
  border-color: var(--accent-red) !important;
  background-color: rgba(185, 28, 28, 0.05);
}

.input-error-msg {
  font-size: 10px;
  color: var(--accent-red);
  display: none;
  font-weight: 600;
}

.input-error-msg.visible {
  display: block;
}

.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.custom-checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
}

.custom-checkbox input {
  display: none;
}

.checkbox-box {
  width: 16px;
  height: 16px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background: var(--bg-secondary);
  position: relative;
  flex-shrink: 0;
}

.custom-checkbox input:checked + .checkbox-box {
  background: var(--accent-blue);
  border-color: var(--accent-blue);
}

.custom-checkbox input:checked + .checkbox-box::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 2px;
  width: 4px;
  height: 8px;
  border: solid #ffffff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.field-hint {
  font-size: 10px;
  color: var(--text-muted);
  margin-left: 24px;
}

.button-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.sidebar-methodology-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px solid var(--border-color);
}

.badge {
  font-size: 10px;
  padding: 3px 8px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  border-radius: 12px;
  font-weight: 600;
}

/* Workbench Viewports */
.workbench-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.viewport-split {
  flex: 1;
  display: flex;
  min-height: 260px;
}

.viewport-pane {
  flex: 1;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border-color);
  position: relative;
  background: var(--viewport-bg);
}

.pane-tag {
  position: absolute;
  top: 10px;
  left: 10px;
  background: var(--pane-tag-bg);
  color: var(--pane-tag-text);
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 600;
  border-radius: 4px;
  z-index: 10;
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.iframe-container {
  width: 100%;
  height: 100%;
}

.benchmark-target-frame {
  width: 100%;
  height: 100%;
  border: none;
  background: transparent;
}

/* Modals & Dialogs */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-hidden {
  display: none !important;
}

.modal-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  width: 90%;
  max-width: 800px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.modal-large {
  max-width: 1200px;
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h2 {
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.modal-actions {
  display: flex;
  gap: 8px;
}

.catalog-filters {
  padding: 12px 20px;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  gap: 12px;
}

.modal-scroll-area {
  padding: 16px 20px;
  overflow-y: auto;
  flex: 1;
}

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

.catalog-table th, .catalog-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
}

.catalog-table th {
  color: var(--text-muted);
  text-transform: uppercase;
  font-size: 10px;
}

.badge-implemented {
  background: rgba(4, 120, 87, 0.15);
  color: var(--accent-green);
  border: 1px solid var(--accent-green);
}

.badge-roadmap {
  background: rgba(180, 83, 9, 0.15);
  color: var(--accent-amber);
  border: 1px solid var(--accent-amber);
}

/* Audit Log Cards */
.log-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 12px;
  margin-bottom: 10px;
}

.log-passed { border-left: 4px solid var(--accent-green); }
.log-failed { border-left: 4px solid var(--accent-red); }

.log-card-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
}

.log-badge { font-weight: 700; }
.log-timestamp { color: var(--text-muted); }
.log-body p { margin-bottom: 4px; font-size: 12px; }