/* ============================================
   CutSec OT OSINT Program Workshop
   Based on CutSec Design System Base Stylesheet

   Professional, high-contrast styling for
   projector and browser use. CSS variables
   for easy theming.
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  /* Primary palette -- Warm Slate */
  --color-primary:        #334155;
  --color-primary-light:  #475569;
  --color-primary-dark:   #1e293b;

  /* Accent -- CutSec muted gold */
  --color-accent:         #d97706;
  --color-accent-light:   #f59e0b;
  --color-accent-dark:    #b45309;

  /* Backgrounds */
  --color-bg:             #f7f8fa;
  --color-bg-white:       #ffffff;
  --color-nav-bg:         #334155;
  --color-footer-bg:      #1e293b;
  --color-code-bg:        #f1f5f9;
  --color-surface-subtle: #f8fafc;
  --color-overview-bg:    #fefce8;
  --color-output-bg:      #f0fdf4;
  --color-query-bg:       #1e293b;
  --color-query-text:     #e2e8f0;
  --color-response-bg:    #f8fafc;

  /* Text */
  --color-text:           #1a1a1a;
  --color-text-light:     #4a4a4a;
  --color-heading:        #1a1a1a;
  --color-nav-text:       #e2e8f0;
  --color-nav-hover:      #ffffff;
  --color-footer-text:    #a0aec0;
  --color-btn-text:       #ffffff;

  /* Links */
  --color-link:           #d97706;
  --color-link-hover:     #b45309;

  /* Borders */
  --color-border:         #e2e8f0;
  --color-border-dark:    #cbd5e0;
  --color-overview-border:#d97706;
  --color-output-border:  #16a34a;

  /* Semantic colors */
  --color-success:        #059669;
  --color-danger:         #b91c1c;
  --color-danger-light:   #fca5a5;

  /* Callout backgrounds */
  --color-callout-info-bg:    #eef2f7;
  --color-callout-warning-bg: #fef3c7;
  --color-callout-safety-bg:  #fef2f2;

  /* Query/response block labels */
  --color-query-label-bg:     #334155;
  --color-query-label-border: #374151;
  --color-response-label-bg:  #e2e8f0;

  /* Timing badges */
  --color-timing:              #475569;
  --color-timing-read-bg:      #eff6ff;
  --color-timing-read:         #1e40af;
  --color-timing-read-border:  #bfdbfe;
  --color-timing-lab-bg:       #f0fdf4;
  --color-timing-lab:          #166534;
  --color-timing-lab-border:   #bbf7d0;
  --color-timing-total-bg:     #f1f5f9;
  --color-timing-total:        #334155;
  --color-timing-total-border: #94a3b8;

  /* Typography */
  --font-body:  -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono:  "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --font-size-base: 16px;

  /* Layout */
  --radius:      4px;
  --spacing-sm:  0.5rem;
  --spacing-md:  1rem;
  --spacing-lg:  2rem;
  --max-width:   960px;
}

/* --- Dark Theme --- */
[data-theme="dark"] {
  --color-primary:        #94a3b8;
  --color-primary-light:  #64748b;
  --color-primary-dark:   #0f172a;

  --color-accent:         #f59e0b;
  --color-accent-light:   #fbbf24;
  --color-accent-dark:    #d97706;

  --color-bg:             #121212;
  --color-bg-white:       #1e1e1e;
  --color-nav-bg:         #0d0d0d;
  --color-footer-bg:      #0d0d0d;
  --color-code-bg:        #2a2a2a;
  --color-surface-subtle: #252525;
  --color-overview-bg:    #1f1a0a;
  --color-output-bg:      #0f1f0f;
  --color-query-bg:       #0f172a;
  --color-query-text:     #e2e8f0;
  --color-response-bg:    #1a1a1a;

  --color-text:           #e0e0e0;
  --color-text-light:     #a0a0a0;
  --color-heading:        #f0f0f0;
  --color-nav-text:       #e2e8f0;
  --color-nav-hover:      #ffffff;
  --color-footer-text:    #8899aa;
  --color-btn-text:       #ffffff;

  --color-link:           #f59e0b;
  --color-link-hover:     #fbbf24;

  --color-border:         #333333;
  --color-border-dark:    #444444;
  --color-overview-border:#d97706;
  --color-output-border:  #16a34a;

  --color-success:        #10b981;
  --color-danger:         #ef4444;
  --color-danger-light:   #7f1d1d;

  --color-callout-info-bg:    #1a2332;
  --color-callout-warning-bg: #2a2010;
  --color-callout-safety-bg:  #2a1515;

  --color-query-label-bg:     #0f172a;
  --color-query-label-border: #1e293b;
  --color-response-label-bg:  #2a2a2a;

  --color-timing:              #94a3b8;
  --color-timing-read-bg:      #1e293b;
  --color-timing-read:         #93c5fd;
  --color-timing-read-border:  #1e40af;
  --color-timing-lab-bg:       #0f1f0f;
  --color-timing-lab:          #86efac;
  --color-timing-lab-border:   #166534;
  --color-timing-total-bg:     #1e293b;
  --color-timing-total:        #e2e8f0;
  --color-timing-total-border: #475569;
}

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

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

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

main {
  flex: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-lg) 1.5rem;
  width: 100%;
}

/* ============================================================
   Typography
   ============================================================ */

h1, h2, h3, h4, h5, h6 {
  color: var(--color-heading);
  font-weight: 700;
  line-height: 1.3;
  margin: 1.5em 0 0.5em 0;
}

h1 { font-size: 1.75rem; margin-bottom: var(--spacing-md); }
h2 { font-size: 1.4rem; margin-top: var(--spacing-lg); margin-bottom: var(--spacing-md); border-bottom: 2px solid var(--color-border); padding-bottom: 0.3em; }
h3 { font-size: 1.15rem; margin-top: var(--spacing-md); margin-bottom: var(--spacing-sm); }
h4 { font-size: 1.1em; }

p {
  margin: 0 0 1em 0;
}

a {
  color: var(--color-link);
  text-decoration: none;
}

a:hover, a:focus {
  color: var(--color-link-hover);
  text-decoration: underline;
}

strong {
  font-weight: 700;
}

/* ============================================================
   Navigation
   ============================================================ */

.site-header {
  background-color: var(--color-nav-bg);
  color: var(--color-nav-text);
  padding: 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-sm) var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  color: var(--color-nav-text);
  font-weight: 700;
  font-size: 1.1em;
  padding: 0.75rem 0;
  white-space: nowrap;
}

.nav-brand img {
  height: 28px;
  width: auto;
}

.nav-brand:hover {
  color: var(--color-nav-hover);
  text-decoration: none;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--color-nav-text);
  font-size: 1.25rem;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius);
  cursor: pointer;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  padding: 0;
  margin: 0;
  align-items: center;
}

.nav-links a,
.nav-links > li > a {
  color: var(--color-nav-text);
  text-decoration: none;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  transition: background-color 0.2s, color 0.2s;
}

.nav-links a:hover,
.nav-links a:focus,
.nav-links a.active {
  background-color: var(--color-primary-light);
  color: var(--color-nav-hover);
  text-decoration: none;
}

/* Nav Dropdown */
.nav-dropdown {
  position: relative;
}

.nav-dropdown > a {
  cursor: pointer;
}

.nav-dropdown > a::after {
  content: " \25BE";
  font-size: 0.7em;
}

.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background-color: var(--color-nav-bg);
  border: 1px solid var(--color-primary-light);
  border-radius: var(--radius);
  padding: var(--spacing-sm) 0;
  min-width: 280px;
  z-index: 200;
  list-style: none;
  margin: 0;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.nav-dropdown:hover > .nav-dropdown-menu,
.nav-dropdown:focus-within > .nav-dropdown-menu {
  display: block;
}

.nav-dropdown-menu li {
  margin: 0;
}

.nav-dropdown-menu a {
  display: block;
  padding: 0.35rem var(--spacing-md);
  border-radius: 0;
  white-space: nowrap;
  font-size: 0.85em;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-dropdown-menu a:last-child {
  border-bottom: none;
}

.nav-dropdown-menu a:hover,
.nav-dropdown-menu a.active {
  background-color: var(--color-primary-light);
}

/* Theme Toggle */
.theme-toggle {
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--color-nav-text);
  border-radius: var(--radius);
  padding: 0.25rem 0.5rem;
  font-size: 0.875rem;
  cursor: pointer;
  transition: background-color 0.2s;
  line-height: 1;
}

.theme-toggle:hover {
  background-color: rgba(255, 255, 255, 0.15);
}

/* ============================================================
   Module Page
   ============================================================ */

.module-header {
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 3px solid var(--color-primary);
}

.module-header h1 {
  margin: 0 0 0.5rem 0;
  font-size: 1.8em;
}

/* ============================================================
   Timing Badges
   ============================================================ */

.timing-badges {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.section-timing {
  display: inline-flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.15em 0.5em;
  border-radius: var(--radius);
  display: inline-block;
}

.badge-timing {
  background-color: var(--color-code-bg);
  color: var(--color-timing);
  border: 1px solid var(--color-border-dark);
}

.badge-timing--read {
  background-color: var(--color-timing-read-bg);
  color: var(--color-timing-read);
  border-color: var(--color-timing-read-border);
}

.badge-timing--lab {
  background-color: var(--color-timing-lab-bg);
  color: var(--color-timing-lab);
  border-color: var(--color-timing-lab-border);
}

.badge-timing--total {
  background-color: var(--color-timing-total-bg);
  color: var(--color-timing-total);
  border-color: var(--color-timing-total-border);
  font-weight: 700;
}

/* ============================================================
   Content Sections
   ============================================================ */

.read-section,
.demo-section,
.lab-section,
.output-section {
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--spacing-lg) 1.5rem;
  margin-bottom: var(--spacing-lg);
}

.read-section {
  border-left: 3px solid var(--color-primary);
}

.demo-section {
  border-left: 3px solid var(--color-accent);
}

.lab-section {
  border-left: 3px solid var(--color-success);
}

.lab-section h2 {
  margin-top: 0;
}

.lab-section ol {
  padding-left: 1.5em;
}

.lab-section ol > li {
  margin-bottom: 1em;
}

.output-section {
  background-color: var(--color-output-bg);
  border-left: 3px solid var(--color-output-border);
}

.output-section h2 {
  margin-top: 0;
  border-bottom: none;
  color: #15803d;
}

[data-theme="dark"] .output-section h2 {
  color: #86efac;
}

.overview-section {
  background-color: var(--color-overview-bg);
  border: 1px solid var(--color-overview-border);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius);
  padding: var(--spacing-lg) 1.5rem;
  margin-bottom: var(--spacing-lg);
}

.overview-section h2 {
  margin-top: 0;
  border-bottom: none;
  color: var(--color-primary);
}

/* Module references */
.module-references {
  margin-top: 2rem;
  margin-bottom: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.module-references h2 {
  font-size: 1.2em;
  margin-top: 0;
  color: var(--color-text-light);
}

.module-references ol {
  padding-left: 1.5rem;
  font-size: 0.9em;
  color: var(--color-text-light);
  line-height: 1.8;
}

.module-references ol li {
  padding-left: 0.25rem;
}

/* ============================================================
   Module Navigation (prev/next)
   ============================================================ */

.module-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  margin-top: var(--spacing-lg);
}

.module-nav a {
  font-weight: 600;
  font-size: 0.9rem;
}

.module-nav .nav-prev::before {
  content: "<< ";
}

.module-nav .nav-next::after {
  content: " >>";
}

.module-nav .nav-index {
  font-size: 0.85em;
}

.module-nav .nav-placeholder {
  visibility: hidden;
}

/* Module Progress */
.module-progress {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border);
}

/* ============================================================
   Query Blocks (AI Copilot Prompts)
   ============================================================ */

.query-block {
  background-color: var(--color-query-bg);
  color: var(--color-query-text);
  border-radius: var(--radius);
  margin: 1.5em 0;
  position: relative;
  overflow: hidden;
}

.query-block .block-label {
  background-color: var(--color-query-label-bg);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent-light);
  border-bottom: 1px solid var(--color-query-label-border);
}

.query-block pre {
  margin: 0;
  padding: var(--spacing-md);
  background-color: var(--color-query-bg);
  color: var(--color-query-text);
  overflow-x: auto;
  border-radius: 0;
}

.query-block pre code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  line-height: 1.5;
  background: none;
  padding: 0;
  border: none;
  color: inherit;
  white-space: pre-wrap;
  word-wrap: break-word;
}

.query-block .copy-btn {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--color-query-text);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius);
  padding: 0.25rem 0.6rem;
  font-size: 0.75rem;
  cursor: pointer;
  transition: background-color 0.2s;
}

.query-block .copy-btn:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

.query-block .copy-btn.copied {
  background-color: var(--color-success);
  border-color: var(--color-success);
}

/* ============================================================
   Response Blocks (Expected AI Responses)
   ============================================================ */

.response-block {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin: 1.5em 0;
  overflow: hidden;
}

.response-block .block-label {
  background-color: var(--color-response-label-bg);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.response-block .toggle-btn {
  background: none;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius);
  padding: 0.25rem 0.6rem;
  font-size: 0.75rem;
  cursor: pointer;
  color: var(--color-primary);
  transition: background-color 0.2s;
}

.response-block .toggle-btn:hover {
  background-color: var(--color-bg);
}

.response-content {
  padding: var(--spacing-md);
  background-color: var(--color-response-bg);
  font-size: 0.95em;
  line-height: 1.6;
  border-top: 1px solid var(--color-border);
}

.response-content[hidden] {
  display: none;
}

.response-content h1,
.response-content h2,
.response-content h3,
.response-content h4 {
  font-size: 1em;
  font-weight: 700;
  margin: 1em 0 0.3em 0;
  border-bottom: none;
}

.response-content h3 {
  font-weight: 600;
}

.response-content ul,
.response-content ol {
  margin-bottom: 0.5em;
}

.response-content p:last-child {
  margin-bottom: 0;
}

/* ============================================================
   Collapsible Sections (details/summary -- preferred)
   ============================================================ */

details.details-styled {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: var(--spacing-md);
  overflow: hidden;
}

details.details-styled summary {
  background-color: var(--color-bg);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-heading);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

details.details-styled summary::-webkit-details-marker {
  display: none;
}

details.details-styled summary::after {
  content: "\25B6";
  font-size: 0.75rem;
  color: var(--color-primary);
  transition: transform 0.2s;
}

details.details-styled[open] summary::after {
  transform: rotate(90deg);
}

details.details-styled > :not(summary) {
  padding: 0 var(--spacing-md);
}

details.details-styled > :nth-child(2) {
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

details.details-styled > :last-child {
  padding-bottom: var(--spacing-md);
}

/* Unstyled details (workshop worked examples) */
details {
  margin: 1.5em 0;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius);
  overflow: hidden;
}

details summary {
  background-color: var(--color-response-label-bg);
  color: var(--color-text);
  padding: 0.6rem 1rem;
  font-size: 0.9em;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

details summary::-webkit-details-marker {
  display: none;
}

details summary::before {
  content: ">";
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.85em;
  transition: transform 0.15s ease;
}

details[open] summary::before {
  transform: rotate(90deg);
}

details summary:hover {
  background-color: var(--color-border-dark);
}

details .response-block {
  margin: 0;
  border: none;
  border-radius: 0;
}

.worked-example-content {
  padding: 0.5rem 1rem 1rem;
}

.worked-example-content h4:first-child {
  margin-top: 0.5rem;
}

/* ============================================================
   Generic Content Styles
   ============================================================ */

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background-color: var(--color-code-bg);
  padding: 0.15em 0.35em;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

pre {
  background-color: var(--color-code-bg);
  padding: 1rem;
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  margin: 1em 0;
}

pre code {
  background: none;
  padding: 0;
  border: none;
  font-size: 0.85em;
  display: block;
  line-height: 1.5;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1em 0;
  font-size: 0.9rem;
}

th {
  background-color: var(--color-primary);
  color: var(--color-nav-text);
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
  font-weight: 600;
}

[data-theme="dark"] th {
  background-color: var(--color-primary-dark);
}

td {
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
}

tr:nth-child(even) {
  background-color: var(--color-surface-subtle);
}

blockquote {
  border-left: 4px solid var(--color-border-dark);
  margin: 1em 0;
  padding: 0.5em 1em;
  color: var(--color-text-light);
  background-color: var(--color-surface-subtle);
}

/* Callouts */
.callout {
  padding: var(--spacing-md);
  border-radius: var(--radius);
  margin-bottom: var(--spacing-md);
  font-size: 0.9rem;
}

.callout-info {
  background-color: var(--color-callout-info-bg);
  border-left: 3px solid var(--color-primary);
  padding: 1em 1.25em;
  margin: 1.5em 0;
}

.callout-info p:last-child {
  margin-bottom: 0;
}

.callout-warning {
  background-color: var(--color-callout-warning-bg);
  border-left: 3px solid var(--color-accent);
}

.callout-safety {
  background-color: var(--color-callout-safety-bg);
  border-left: 3px solid var(--color-danger);
}

ol, ul {
  margin: 0 0 1em 0;
  padding-left: 1.5em;
}

li {
  margin-bottom: 0.3em;
}

hr {
  border: none;
  border-top: 2px solid var(--color-border);
  margin: 2em 0;
}

/* Screenshot images */
main img {
  display: block;
  margin: var(--spacing-md) auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  max-width: 100%;
  height: auto;
}

main img.img-sm {
  max-width: 50%;
}

main img.img-md {
  max-width: 75%;
}

/* External link indicator */
a[target="_blank"]::after {
  content: " [ext]";
  font-size: 0.7em;
  vertical-align: super;
  color: var(--color-text-light);
}

/* ============================================================
   Index / Hero Page
   ============================================================ */

.hero {
  text-align: center;
  padding: var(--spacing-lg) 0;
  margin-bottom: var(--spacing-lg);
  border-bottom: 3px solid var(--color-primary);
}

.hero h1 {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary);
}

.hero .subtitle {
  font-size: 1.1rem;
  color: var(--color-text-light);
  max-width: 640px;
  margin: 0 auto var(--spacing-md);
}

.hero .brand-mark {
  font-size: 0.9rem;
  color: var(--color-accent);
  font-weight: 600;
}

.hero img {
  border: none;
}

.schedule-table {
  margin: 1.5em 0;
}

.schedule-table td:first-child {
  white-space: nowrap;
}

.schedule-break td {
  background-color: var(--color-code-bg);
  font-style: italic;
  text-align: center;
}

/* Card Grids */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  margin: 1.5em 0;
}

.card {
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--spacing-md) var(--spacing-lg);
  text-decoration: none;
  color: var(--color-text);
  display: block;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  text-decoration: none;
  color: var(--color-text);
}

a.card {
  text-decoration: none;
  color: inherit;
}

.card .card-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.card h3 {
  margin: 0 0 0.3em 0;
  font-size: 1em;
  color: var(--color-heading);
}

.card p {
  margin: 0;
  font-size: 0.85em;
  color: var(--color-text-light);
}

/* ============================================================
   Break Indicator
   ============================================================ */

.break-indicator {
  text-align: center;
  padding: 1rem;
  margin: 2rem 0;
  background-color: var(--color-code-bg);
  border-radius: var(--radius);
  color: var(--color-text-light);
  font-weight: 600;
}

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

.site-footer {
  background-color: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: var(--spacing-lg);
  margin-top: auto;
  font-size: 0.875rem;
  text-align: center;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.site-footer a {
  color: var(--color-accent-light);
  text-decoration: underline;
}

.site-footer a:hover {
  color: var(--color-accent);
}

.site-footer a[target="_blank"]::after {
  display: none;
}

/* ============================================================
   Print
   ============================================================ */

@media print {
  .site-header,
  .site-footer,
  .theme-toggle,
  .nav-toggle,
  .module-nav,
  .copy-btn,
  .toggle-btn,
  .section-toggle {
    display: none;
  }

  main {
    max-width: 100%;
    padding: 0;
  }

  body {
    background-color: #ffffff;
    color: #000000;
  }

  a {
    color: #000000;
    text-decoration: underline;
  }

  .query-block pre {
    background-color: #f5f5f5;
    color: #000;
    border: 1px solid #ccc;
  }
}

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

@media (min-width: 640px) {
  .card-grid {
    grid-template-columns: 1fr 1fr;
  }

  h1 { font-size: 2rem; }
  .hero h1 { font-size: 2.25rem; }
}

/* Tablet */
@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    padding-top: var(--spacing-sm);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-dropdown-menu {
    position: static;
    box-shadow: none;
    border: none;
    padding: 0 0 0 var(--spacing-md);
    min-width: 0;
  }

  main {
    padding: var(--spacing-md);
  }

  .read-section,
  .demo-section,
  .lab-section,
  .output-section,
  .overview-section {
    padding: var(--spacing-md);
  }

  .module-header h1 {
    font-size: 1.4em;
  }

  .module-nav {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }

  .footer-inner {
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  .hero h1 {
    font-size: 1.6em;
  }

  table {
    font-size: 0.85em;
  }

  th, td {
    padding: 0.4rem 0.5rem;
  }
}

/* Phone */
@media (max-width: 375px) {
  html {
    font-size: 14px;
  }

  .timing-badges {
    flex-direction: column;
    gap: 0.3rem;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }
}