/* ==========================================================================
   HTTP Keep-Alive Analyzer - Modern CSS
   ========================================================================== */

/* CSS Custom Properties (Variables) */
:root {
  /* Colors */
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-primary-light: #3b82f6;
  
  --color-secondary: #64748b;
  --color-secondary-dark: #475569;
  --color-secondary-light: #94a3b8;
  
  --color-success: #059669;
  --color-warning: #d97706;
  --color-error: #dc2626;
  
  --color-background: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-hover: #f1f5f9;
  
  --color-text-primary: #1e293b;
  --color-text-secondary: #64748b;
  --color-text-muted: #94a3b8;
  
  --color-border: #e2e8f0;
  --color-border-focus: #3b82f6;
  
  /* Typography */
  --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
  
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  --line-height-tight: 1.25;
  --line-height-base: 1.5;
  --line-height-relaxed: 1.625;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  
  /* Border radius */
  --radius-sm: 0.25rem;
  --radius-base: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-base: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
  
  /* Layout */
  --container-max-width: 1200px;
  --header-height: 4rem;
}

/* ==========================================================================
   Reset and Base Styles
   ========================================================================== */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text-primary);
  background-color: var(--color-background);
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ==========================================================================
   Accessibility
   ========================================================================== */

.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--color-primary);
  color: white;
  padding: var(--space-2) var(--space-4);
  text-decoration: none;
  border-radius: var(--radius-base);
  z-index: 9999;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 6px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* Focus indicators */
:focus-visible {
  outline: 2px solid var(--color-border-focus);
  outline-offset: 2px;
}

/* ==========================================================================
   Layout Components
   ========================================================================== */

.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-6);
  }
}

/* ==========================================================================
   Header
   ========================================================================== */

.header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-6) 0;
}

.header__title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  margin: 0 0 var(--space-2) 0;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.header__icon {
  font-size: var(--font-size-2xl);
}

.header__subtitle {
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
  margin: 0;
}

/* ==========================================================================
   Main Content
   ========================================================================== */

.main {
  flex: 1;
  padding: var(--space-8) 0;
}

/* ==========================================================================
   Forms
   ========================================================================== */

.analysis-form {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-base);
  margin-bottom: var(--space-8);
}

.form__group {
  margin-bottom: var(--space-6);
}

.form__label {
  display: block;
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
}

.form__label-hint {
  font-weight: var(--font-weight-normal);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.form__input-group {
  display: flex;
  gap: var(--space-3);
}

.form__input {
  flex: 1;
  padding: var(--space-3) var(--space-4);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  background: var(--color-surface);
  color: var(--color-text-primary);
}

.form__input:focus {
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px rgb(59 130 246 / 0.1);
}

.form__input:invalid:not(:placeholder-shown) {
  border-color: var(--color-error);
}

.form__input::placeholder {
  color: var(--color-text-muted);
}

.form__error {
  color: var(--color-error);
  font-size: var(--font-size-sm);
  margin-top: var(--space-2);
  min-height: 1.25rem;
}

.form__options {
  margin-top: var(--space-6);
}

.form__fieldset {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin: 0;
}

.form__legend {
  font-weight: var(--font-weight-medium);
  padding: 0 var(--space-2);
}

.form__checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  cursor: pointer;
}

.form__checkbox-input {
  margin: 0;
  width: 1.125rem;
  height: 1.125rem;
  flex-shrink: 0;
  margin-top: 0.125rem;
}

.form__checkbox-label {
  flex: 1;
}

.form__help-text {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-1);
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border: 2px solid transparent;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  min-height: 2.75rem;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn--primary {
  background: var(--color-primary);
  color: white;
}

.btn--primary:hover:not(:disabled) {
  background: var(--color-primary-dark);
}

.btn--secondary {
  background: var(--color-surface);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.btn--secondary:hover:not(:disabled) {
  background: var(--color-surface-hover);
}

.btn__loader {
  display: none;
  width: 1rem;
  height: 1rem;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.btn--loading .btn__text {
  opacity: 0;
}

.btn--loading .btn__loader {
  display: block;
  position: absolute;
}

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

/* ==========================================================================
   Loading States
   ========================================================================== */

.loading {
  display: none;
  text-align: center;
  padding: var(--space-12);
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-base);
}

.loading__spinner {
  width: 3rem;
  height: 3rem;
  border: 4px solid var(--color-border);
  border-top: 4px solid var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto var(--space-4) auto;
}

.loading__text {
  color: var(--color-text-secondary);
  margin: 0;
}

/* ==========================================================================
   Error States
   ========================================================================== */

.error {
  display: none;
  background: var(--color-surface);
  border: 2px solid var(--color-error);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
  margin-bottom: var(--space-8);
}

.error__title {
  color: var(--color-error);
  margin: 0 0 var(--space-4) 0;
}

.error__message {
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-6) 0;
}

/* ==========================================================================
   Results
   ========================================================================== */

.results {
  display: none;
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-base);
  overflow: hidden;
}

.results-summary {
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.results-summary__title {
  margin: 0 0 var(--space-4) 0;
  font-size: var(--font-size-xl);
  color: var(--color-text-primary);
}

.results-summary__content {
  color: var(--color-text-secondary);
}

.results-content {
  color: var(--color-text-primary);
}

.results-content h4,
.results-content h5,
.results-content h6 {
  color: var(--color-text-primary);
}

.results-content p {
  color: var(--color-text-secondary);
}

.results-content ul,
.results-content ol {
  color: var(--color-text-primary);
}

.results-content li {
  color: var(--color-text-secondary);
}

.results-content strong,
.results-content b {
  color: var(--color-text-primary);
}

.results-content em,
.results-content i {
  color: var(--color-text-secondary);
}

.results-content .error {
  color: var(--color-error);
}

.results-content .success {
  color: var(--color-success);
}

.results-content .warning {
  color: var(--color-warning);
}

/* ==========================================================================
   Tabs
   ========================================================================== */

.tabs {
  display: flex;
  border-bottom: 2px solid var(--color-border);
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.tabs::-webkit-scrollbar {
  display: none;
}

.tabs__tab {
  background: none;
  border: none;
  padding: var(--space-4) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
  white-space: nowrap;
  position: relative;
}

.tabs__tab:hover {
  color: var(--color-text-primary);
  background: var(--color-surface-hover);
}

.tabs__tab[aria-selected="true"] {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  background: var(--color-surface);
}

/* ==========================================================================
   Tab Panels
   ========================================================================== */

.tab-panels {
  min-height: 400px;
}

.tab-panel {
  display: none;
  padding: var(--space-6);
}

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

.tab-panel__title {
  margin: 0 0 var(--space-2) 0;
  font-size: var(--font-size-xl);
}

.tab-panel__description {
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-6) 0;
}

/* ==========================================================================
   Charts
   ========================================================================== */

.chart-container {
  position: relative;
  height: 400px;
  margin: var(--space-6) 0;
}

.chart {
  max-width: 100%;
  height: auto;
}

.chart-message,
.chart-error {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding: var(--space-6);
  text-align: center;
  background: var(--color-surface-hover);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.chart-message {
  color: var(--color-text-secondary);
  font-style: italic;
}

.chart-error {
  color: var(--color-error);
  font-weight: var(--font-weight-medium);
}

/* ==========================================================================
   Tables
   ========================================================================== */

.table-container {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

th,
td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

th {
  background: var(--color-surface-hover);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

tbody tr:hover {
  background: var(--color-surface-hover);
}

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

td,
th {
  color: var(--color-text-primary);
}

tbody td {
  color: var(--color-text-secondary);
}

/* ==========================================================================
   Accordions
   ========================================================================== */

.accordion {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.accordion-item + .accordion-item {
  border-top: 1px solid var(--color-border);
}

.accordion-header {
  background: var(--color-surface-hover);
  padding: var(--space-4);
  cursor: pointer;
  font-weight: var(--font-weight-medium);
  transition: background-color var(--transition-fast);
  border: none;
  width: 100%;
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--color-text-primary);
}

.accordion-header:hover {
  background: var(--color-border);
}

.accordion-header::after {
  content: '+';
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
  transition: transform var(--transition-fast);
}

.accordion-header.active::after {
  transform: rotate(45deg);
}

.accordion-body {
  display: none;
  padding: var(--space-4);
  background: var(--color-surface);
  color: var(--color-text-secondary);
}

.accordion-body.active {
  display: block;
}

/* ==========================================================================
   Summary Statistics
   ========================================================================== */

.summary-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
  margin: var(--space-4) 0;
}

.stat {
  background: var(--color-surface-hover);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  text-align: center;
}

.stat__label {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-1);
}

.stat__value {
  display: block;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

/* ==========================================================================
   CSP Results
   ========================================================================== */

.csp-result h4 {
  margin: 0 0 var(--space-3) 0;
  color: var(--color-text-primary);
}

/* ==========================================================================
   Diff Headers
   ========================================================================== */

.diff-header td:first-child {
  color: var(--color-error);
  font-weight: var(--font-weight-semibold);
}

/* ==========================================================================
   Code blocks
   ========================================================================== */

pre,
code {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
}

pre {
  background: var(--color-surface-hover);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow-x: auto;
  white-space: pre-wrap;
  word-wrap: break-word;
  margin: var(--space-4) 0;
  color: var(--color-text-primary);
}

code {
  color: var(--color-text-primary);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-6) 0;
  margin-top: var(--space-12);
}

.footer__text {
  margin: 0;
  color: var(--color-text-secondary);
  text-align: center;
}

.footer__link {
  color: var(--color-primary);
  text-decoration: none;
}

.footer__link:hover {
  text-decoration: underline;
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 768px) {
  .form__input-group {
    flex-direction: column;
  }
  
  .form__input {
    margin-bottom: var(--space-3);
  }
  
  .header__title {
    font-size: var(--font-size-2xl);
  }
  
  .tabs {
    flex-wrap: wrap;
  }
  
  .tabs__tab {
    flex: 1;
    min-width: max-content;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-3);
  }
  
  .analysis-form {
    padding: var(--space-6);
  }
  
  .tab-panel {
    padding: var(--space-4);
  }
}

/* ==========================================================================
   Server Fingerprinting & CDN Detection
   ========================================================================== */

.server-fingerprint,
.cdn-detection {
  margin: var(--space-6) 0;
  padding: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
}

.server-fingerprint h4,
.cdn-detection h4 {
  margin: 0 0 var(--space-4) 0;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.fingerprint-info {
  display: grid;
  gap: var(--space-3);
}

.fingerprint-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-border);
}

.fingerprint-item:last-child {
  border-bottom: none;
}

.fingerprint-item .label {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

.fingerprint-item .value {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

/* Confidence indicators */
.confidence-high {
  color: var(--color-success) !important;
}

.confidence-medium {
  color: var(--color-warning) !important;
}

.confidence-low {
  color: var(--color-error) !important;
}

.high-confidence {
  color: var(--color-success);
}

.medium-confidence {
  color: var(--color-warning);
}

.low-confidence {
  color: var(--color-error);
}

/* CDN Detection */
.cdn-info {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.cdn-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3);
  border-radius: var(--border-radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface-hover);
  min-width: 0;
  flex: 1;
  position: relative;
  cursor: help;
  transition: all var(--transition-fast);
}

.cdn-item:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-base);
}

.cdn-item.detected {
  background: rgba(5, 150, 105, 0.1);
  border-color: var(--color-success);
}

.cdn-item.not-detected {
  background: rgba(220, 38, 38, 0.1);
  border-color: var(--color-error);
  opacity: 0.6;
}

.cdn-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-1);
}

.cdn-name {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  white-space: nowrap;
  font-size: var(--font-size-sm);
}

.cdn-confidence {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: var(--space-1);
  align-self: flex-start;
  display: inline-block;
}

.cdn-confidence.confidence-high {
  background: rgba(5, 150, 105, 0.2);
  color: var(--color-success);
  border: 1px solid var(--color-success);
}

.cdn-confidence.confidence-medium {
  background: rgba(217, 119, 6, 0.2);
  color: var(--color-warning);
  border: 1px solid var(--color-warning);
}

.cdn-confidence.confidence-low {
  background: rgba(220, 38, 38, 0.2);
  color: var(--color-error);
  border: 1px solid var(--color-error);
}

.cdn-confidence.confidence-unknown {
  background: rgba(100, 116, 139, 0.2);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.cdn-status {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex-grow: 1;
}

.cdn-item.detected .cdn-status {
  color: var(--color-success);
}

.cdn-item.not-detected .cdn-status {
  color: var(--color-error);
}

.evidence-indicator {
  position: absolute;
  top: 4px;
  right: 4px;
  font-size: 10px;
  opacity: 0.7;
  cursor: pointer;
  transition: opacity var(--transition-fast);
}

.evidence-indicator:hover {
  opacity: 1;
}

/* Enhanced tooltip styling for better readability */
.cdn-item[title] {
  position: relative;
}

.cdn-item[title]:hover::after {
  content: attr(title);
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
  color: #1e293b;
  border: 2px solid #e2e8f0;
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-normal);
  white-space: pre-line;
  z-index: 1000;
  max-width: 320px;
  min-width: 200px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15), 0 4px 6px rgba(0, 0, 0, 0.1);
  margin-top: 8px;
  line-height: 1.5;
  text-align: left;
  animation: tooltipFadeIn 0.2s ease-out;
}

.cdn-item[title]:hover::before {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 8px solid transparent;
  border-bottom-color: #e2e8f0;
  z-index: 999;
  margin-top: -2px;
}

.cdn-item[title]:hover::after {
  /* Additional styling to make text more readable */
  font-family: var(--font-family-base);
  letter-spacing: 0.01em;
}

@keyframes tooltipFadeIn {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

/* Dark mode tooltip support */
@media (prefers-color-scheme: dark) {
  .cdn-item[title]:hover::after {
    background: linear-gradient(135deg, #334155 0%, #1e293b 100%);
    color: #f1f5f9;
    border-color: #475569;
  }
  
  .cdn-item[title]:hover::before {
    border-bottom-color: #475569;
  }
}

@media (max-width: 768px) {
  .fingerprint-item {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-1);
  }
  
  .cdn-item {
    flex: 1 1 100%;
  }
}

/* ==========================================================================
   TCP Analysis Enhancement
   ========================================================================== */

.tcp-analysis {
  display: grid;
  gap: var(--space-4);
  margin: var(--space-4) 0;
}

.tcp-connection-info,
.tcp-packet-info {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  padding: var(--space-4);
}

.tcp-connection-info h5,
.tcp-packet-info h5 {
  margin: 0 0 var(--space-3) 0;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.tcp-connection-info,
.tcp-packet-info {
  color: var(--color-text-secondary);
}

/* Connection quality indicators */
.quality-excellent {
  color: var(--color-success);
  font-weight: var(--font-weight-semibold);
}

.quality-good {
  color: #10b981; /* Slightly darker green */
  font-weight: var(--font-weight-semibold);
}

.quality-fair {
  color: var(--color-warning);
  font-weight: var(--font-weight-semibold);
}

.quality-poor {
  color: var(--color-error);
  font-weight: var(--font-weight-semibold);
}

.quality-unknown {
  color: var(--color-text-muted);
}

@media (max-width: 768px) {
  .tcp-analysis {
    gap: var(--space-3);
  }
  
  .tcp-connection-info,
  .tcp-packet-info {
    padding: var(--space-3);
  }
}

/* ==========================================================================
   Dark mode support (optional)
   ========================================================================== */

@media (prefers-color-scheme: dark) {
  :root {
    --color-background: #0f172a;
    --color-surface: #1e293b;
    --color-surface-hover: #334155;
    
    --color-text-primary: #f1f5f9;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;
    
    --color-border: #334155;
  }
  
  /* Ensure all text elements have proper color inheritance */
  .results-content *,
  .tab-panel *,
  .accordion-body *,
  .tcp-connection-info *,
  .tcp-packet-info *,
  .csp-result * {
    color: inherit;
  }
  
  /* Override any remaining black text */
  .results-content {
    color: var(--color-text-primary) !important;
  }
  
  /* Ensure all nested elements inherit the right color */
  .results-content div,
  .results-content span,
  .results-content small,
  .results-content label {
    color: inherit;
  }
}

/* ==========================================================================
   API Documentation
   ========================================================================== */

.api-documentation {
  color: var(--color-text-primary);
}

.api-section {
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.api-section:last-child {
  border-bottom: none;
}

.api-section h4 {
  color: var(--color-text-primary);
  margin: 0 0 var(--space-4) 0;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
}

.api-section h5 {
  color: var(--color-text-primary);
  margin: var(--space-4) 0 var(--space-2) 0;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
}

.api-section p {
  color: var(--color-text-secondary);
  margin: var(--space-2) 0;
  line-height: var(--line-height-relaxed);
}

.api-section ul {
  color: var(--color-text-secondary);
  margin: var(--space-2) 0;
  padding-left: var(--space-5);
}

.api-section li {
  margin: var(--space-1) 0;
  line-height: var(--line-height-relaxed);
}

.api-section pre {
  background: var(--color-surface-hover);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin: var(--space-3) 0;
  overflow-x: auto;
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
}

.api-section code {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
}

.api-section pre code {
  background: none;
  border: none;
  padding: 0;
  margin: 0;
}

.api-section strong {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
}

@media (max-width: 768px) {
  .api-section {
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-4);
  }
  
  .api-section pre {
    font-size: var(--font-size-xs);
    padding: var(--space-3);
  }
}