/* ==========================================================================
   Mike Heaver Portfolio
   Explorer Mode: Immersive, visual, experiential
   Recruiter Mode: Clean, scannable, efficient
   ========================================================================== */

:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #0f0f0f;
  --bg-tertiary: #141414;
  --bg-card: rgba(20, 20, 20, 0.85);
  --bg-card-solid: #1a1a1a;
  
  --text-primary: #f0f0f0;
  --text-secondary: #999;
  --text-muted: #666;
  
  --accent: #4a9eff;
  --accent-secondary: #7b68ee;
  --accent-dim: rgba(74, 158, 255, 0.12);
  --accent-glow: rgba(74, 158, 255, 0.4);
  
  --border: rgba(255, 255, 255, 0.08);
  --border-light: rgba(255, 255, 255, 0.04);
  
  --success: #4ade80;
  --error: #f87171;
  
  --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --container-width: 1100px;
  --section-padding: 8rem;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { 
  scroll-behavior: smooth; 
  overflow-x: hidden;
}

/* Skip Links - visible on focus for keyboard users */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  padding: 1rem 1.5rem;
  background: var(--accent);
  color: var(--bg-primary);
  font-weight: 600;
  z-index: 9999;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 0;
  outline: 3px solid var(--text-primary);
  outline-offset: 2px;
}

/* Visually hidden but accessible to screen readers */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* External link icon */
.external-link-icon {
  display: inline-block;
  margin-left: 0.35rem;
  font-size: 0.85em;
  opacity: 0.7;
}

body {
  font-family: var(--font-display);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* ==========================================================================
   CANVAS BACKGROUND
   ========================================================================== */

#canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
  transition: opacity 0.5s ease;
}

.canvas-fallback {
  position: fixed;
  inset: 0;
  z-index: 1;
  background: 
    radial-gradient(ellipse at 25% 40%, rgba(74, 158, 255, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 75% 60%, rgba(123, 104, 238, 0.05) 0%, transparent 40%),
    var(--bg-primary);
  display: none;
  pointer-events: none;
}

.no-webgl .canvas-fallback { display: block; }
.no-webgl #canvas { display: none; }

/* ==========================================================================
   UI LAYER
   ========================================================================== */

.ui-layer {
  position: relative;
  z-index: 10;
  overflow-x: hidden;
  max-width: 100vw;
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */

nav#navigation,
.case-study-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem max(3rem, calc((100vw - var(--container-width)) / 2));
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.logo {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

.mode-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: all 0.2s ease;
}

.mode-toggle:hover {
  color: var(--text-primary);
  border-color: var(--accent);
}

/* Mobile Menu Toggle (Hamburger) */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  z-index: 200;
}

.hamburger-line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Hamburger to X animation */
.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Navigation Styles */
@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: flex;
  }
  
  .nav-right {
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100vh;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 5rem 2rem 2rem;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    z-index: 1000;
  }
  
  .nav-right.is-open {
    transform: translateX(0);
  }
  
  .nav-links {
    flex-direction: column;
    gap: 0;
    width: 100%;
    margin-bottom: 2rem;
  }
  
  .nav-links li {
    width: 100%;
    border-bottom: 1px solid var(--border);
  }
  
  .nav-links a {
    display: block;
    padding: 1rem 0;
    font-size: 1.1rem;
  }
  
  .mode-toggle {
    width: 100%;
    justify-content: center;
  }
  
  /* Menu Overlay */
  .menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
  }

  .menu-overlay.is-visible {
    opacity: 1;
    visibility: visible;
  }
  
  /* Ensure hamburger is above overlay */
  .mobile-menu-toggle {
    z-index: 1001;
  }
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 3rem;
  position: relative;
  overflow-x: hidden;
}

.hero-content {
  max-width: var(--container-width);
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr minmax(0, 320px);
  gap: 3rem;
  align-items: center;
}

.hero-text {
  min-width: 0; /* Prevent text from forcing overflow */
}

h1 {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.highlight {
  color: var(--accent);
}

.hero-description {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: 2rem;
}

.hero-meta {
  display: flex;
  gap: 2rem;
  margin-bottom: 3rem;
}

.meta-item {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.meta-item span {
  color: var(--text-primary);
  font-weight: 500;
}

/* Floating Cards (Explorer Mode) */
.hero-cards {
  position: relative;
  width: 100%;
  max-width: 320px;
  height: 380px;
  pointer-events: none;
}

.floating-card {
  position: absolute;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
  backdrop-filter: blur(10px);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  pointer-events: auto;
  cursor: pointer;
}

.floating-card:hover {
  box-shadow: 0 0 40px var(--accent-glow);
  border-color: rgba(74, 158, 255, 0.3);
}

.floating-card:nth-child(1) {
  top: 0;
  left: 0;
  transform: rotate(-3deg);
  width: 200px;
}

.floating-card:nth-child(2) {
  top: 80px;
  right: 0;
  transform: rotate(2deg);
  width: 180px;
}

.floating-card:nth-child(3) {
  bottom: 40px;
  left: 30px;
  transform: rotate(-1deg);
  width: 220px;
}

.card-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.floating-card span {
  display: block;
}

.card-title {
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.card-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 3rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  font-size: 0.8rem;
  cursor: pointer;
  transition: opacity 0.3s ease;
}

.scroll-mouse {
  width: 24px;
  height: 38px;
  border: 2px solid var(--text-muted);
  border-radius: 12px;
  position: relative;
}

.scroll-wheel {
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: var(--text-muted);
  border-radius: 2px;
  animation: scroll-bounce 1.5s ease-in-out infinite;
}

@keyframes scroll-bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
  50% { transform: translateX(-50%) translateY(6px); opacity: 0.5; }
}

/* ==========================================================================
   SECTION COMMON
   ========================================================================== */

.section-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 3rem;
}

section {
  padding: var(--section-padding) 0;
}

.section-header {
  margin-bottom: 3rem;
}

.section-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.section-description {
  color: var(--text-secondary);
  max-width: 600px;
}

/* ==========================================================================
   CASE STUDIES
   ========================================================================== */

.case-studies {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.case-study {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.case-study:hover {
  border-color: rgba(74, 158, 255, 0.2);
}

.case-study.expanded {
  border-color: var(--accent);
  box-shadow: 0 0 30px rgba(74, 158, 255, 0.1);
}

/* Case Study Links (new card-based navigation) */
.case-study-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.case-study-link .case-study-summary {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 2rem;
  padding: 1.5rem 2rem;
  cursor: pointer;
  transition: background 0.2s ease;
}

/* Responsive case study cards */
@media (max-width: 900px) {
  .case-study-link .case-study-summary,
  .case-study-summary {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .case-study-metrics {
    justify-content: flex-start;
  }
  
  .case-study-arrow {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
  }
  
  .case-study {
    position: relative;
  }
}

@media (max-width: 480px) {
  .case-study-link .case-study-summary,
  .case-study-summary {
    padding: 1.25rem 1.5rem;
  }
  
  .case-study-metrics {
    gap: 1.5rem;
  }
  
  .metric-value {
    font-size: 1.1rem;
  }
}

.case-study-link:hover .case-study {
  border-color: var(--accent);
  transform: translateX(4px);
}

.case-study-link .case-study-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
  line-height: 1.5;
}

.case-study-arrow {
  font-size: 1.5rem;
  color: var(--text-muted);
  transition: transform 0.2s ease, color 0.2s ease;
}

.case-study-link:hover .case-study-arrow {
  transform: translateX(4px);
  color: var(--accent);
}

.case-study-summary {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 2rem;
  padding: 1.5rem 2rem;
  cursor: pointer;
  transition: background 0.2s ease;
}

.case-study-summary:hover {
  background: rgba(255, 255, 255, 0.02);
}

.case-study-info h3 {
  font-size: 1.15rem;
  font-weight: 500;
  margin-bottom: 0.35rem;
}

.case-study-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.case-study-metrics {
  display: flex;
  gap: 2rem;
}

.metric {
  text-align: center;
}

.metric-value {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--accent);
}

.metric-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.expand-btn {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: all 0.2s ease;
}

.expand-btn:hover {
  color: var(--text-primary);
  border-color: var(--accent);
}

/* Case Study Details (Expanded) */
.case-study-details {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.details-content {
  padding: 0 2rem 2rem;
  border-top: 1px solid var(--border);
}

.details-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 2rem;
}

.detail-block h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.detail-block p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

.process-steps {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.process-step {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.step-number {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  color: var(--accent);
  border-radius: 50%;
  font-size: 0.8rem;
  font-weight: 600;
  flex-shrink: 0;
}

.step-content h5 {
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.step-content p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.outcomes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
}

.outcome-card {
  background: var(--bg-tertiary);
  padding: 1rem;
  border-radius: 8px;
  text-align: center;
}

.outcome-value {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 0.25rem;
}

.outcome-label {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ==========================================================================
   WRITING SECTION
   ========================================================================== */

.writing-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

/* Book Feature */
.book-feature {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  display: grid;
  grid-template-rows: 220px 1fr;
  gap: 2rem;
  align-items: start;
}

.book-cover {
  width: 100%;
  height: 200px;
  /* background: linear-gradient(135deg, var(--accent-dim) 0%, var(--bg-tertiary) 100%); */
  /* border-radius: 4px; */
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
  padding: 1rem;
  /* border: 1px solid var(--border);
  box-shadow: 4px 4px 20px rgba(0, 0, 0, 0.3); */
  rotate: 3deg;
}

.book-cover img {
  width: 140px;
  height: 200px;
  border-radius: 4px;
}

.book-info h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.book-subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.book-description {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.book-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  background: var(--accent);
  color: var(--bg-primary);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.book-link:hover {
  background: #5fa8ff;
  transform: translateY(-2px);
}

/* Articles Grid */
.articles-section {
  padding: 0;
}

.articles-section h3 {
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
}

.articles-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.article-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: all 0.2s ease;
}

.article-card:hover {
  border-color: rgba(74, 158, 255, 0.3);
  background: rgba(74, 158, 255, 0.05);
}

.article-info h4 {
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.article-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.article-arrow {
  color: var(--text-muted);
  transition: transform 0.2s ease, color 0.2s ease;
}

.article-card:hover .article-arrow {
  transform: translateX(4px);
  color: var(--accent);
}

.view-all-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: var(--accent);
  transition: gap 0.2s ease;
}

.view-all-link:hover {
  gap: 0.75rem;
}

/* ==========================================================================
   ABOUT SECTION
   ========================================================================== */

.about-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 4rem;
}

.about-content h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.about-content p {
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  line-height: 1.8;
}

.skills-section {
  margin-top: 3rem;
  padding: 0;
}

.skills-section h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.skill-category h5 {
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.skill-category p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

.about-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.sidebar-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
}

.sidebar-card h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 1rem;
}

.experience-item {
  margin-bottom: 1rem;
}

.experience-item:last-child {
  margin-bottom: 0;
}

.experience-item h5 {
  font-size: 0.95rem;
  font-weight: 500;
}

.experience-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ==========================================================================
   CONTACT SECTION
   ========================================================================== */

/* Contact Simple (LinkedIn only) */
.contact-simple {
  display: flex;
  justify-content: center;
}

.contact-simple.contact-left {
  justify-content: flex-start;
}

.contact-card-large {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 2rem 3rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: all 0.2s ease;
  text-decoration: none;
  color: inherit;
}

.contact-card-large:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 10px 40px rgba(74, 158, 255, 0.15);
}

.contact-card-large .contact-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  color: var(--accent);
  border-radius: 12px;
  font-size: 1.75rem;
  font-weight: 600;
}

.contact-card-large .contact-info h4 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.contact-card-large .contact-value {
  font-size: 1rem;
  color: var(--text-muted);
}

.contact-card-large .contact-arrow {
  font-size: 1.5rem;
  color: var(--text-muted);
  margin-left: 1rem;
  transition: transform 0.2s ease, color 0.2s ease;
}

.contact-card-large:hover .contact-arrow {
  transform: translateX(4px);
  color: var(--accent);
}

/* Contact Layout (form version - legacy) */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 4rem;
}

/* Contact Form */
.contact-form-container {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.form-group label .required {
  color: var(--error);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.85rem 1rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.form-group select {
  cursor: pointer;
}

.submit-btn {
  padding: 1rem 2rem;
  background: var(--accent);
  color: var(--bg-primary);
  font-size: 1rem;
  font-weight: 500;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.submit-btn:hover:not(:disabled) {
  background: #5fa8ff;
  transform: translateY(-2px);
}

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

.submit-btn.loading {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}

.form-status {
  display: none;
  padding: 1rem;
  border-radius: 8px;
  font-size: 0.9rem;
}

.form-status.success {
  background: rgba(74, 222, 128, 0.1);
  color: var(--success);
  border: 1px solid rgba(74, 222, 128, 0.3);
}

.form-status.error {
  background: rgba(248, 113, 113, 0.1);
  color: var(--error);
  border: 1px solid rgba(248, 113, 113, 0.3);
}

/* Contact Sidebar */
.contact-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: all 0.2s ease;
}

.contact-card:hover {
  border-color: rgba(74, 158, 255, 0.3);
  transform: translateY(-2px);
}

.contact-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  color: var(--accent);
  border-radius: 10px;
  font-size: 1.25rem;
  font-weight: 600;
}

.contact-info h4 {
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: 0.15rem;
}

.contact-value {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.response-note {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
}

.response-note h4 {
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.response-note p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
}

.footer-content {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-dot {
  opacity: 0.5;
}

/* ==========================================================================
   RECRUITER MODE - LIGHT THEME
   ========================================================================== */

/* Light theme colour overrides */
body.recruiter-mode {
  --bg-primary: #fafafa;
  --bg-secondary: #f5f5f5;
  --bg-tertiary: #eeeeee;
  --bg-card: #ffffff;
  --bg-card-solid: #ffffff;
  
  --text-primary: #1a1a1a;
  --text-secondary: #555555;
  --text-muted: #888888;
  
  --accent: #4a9eff;
  --accent-secondary: #3d8be6;
  --accent-dim: rgba(74, 158, 255, 0.1);
  --accent-glow: rgba(74, 158, 255, 0.2);
  
  --border: rgba(0, 0, 0, 0.1);
  --border-light: rgba(0, 0, 0, 0.05);
}

/* Background and canvas */
body.recruiter-mode {
  background: var(--bg-primary);
  color: var(--text-primary);
}

body.recruiter-mode #canvas {
  opacity: 0.08;
  filter: invert(1) hue-rotate(180deg);
}

body.recruiter-mode .canvas-fallback {
  background: var(--bg-primary);
}

/* Navigation */
body.recruiter-mode nav#navigation {
  background: rgba(250, 250, 250, 0.9);
  border-bottom-color: var(--border);
}

body.recruiter-mode .logo {
  color: var(--text-primary);
}

body.recruiter-mode .nav-links a {
  color: var(--text-secondary);
}

body.recruiter-mode .nav-links a:hover,
body.recruiter-mode .nav-links a.active {
  color: var(--text-primary);
}

body.recruiter-mode .mode-toggle {
  background: var(--bg-card);
  border-color: var(--border);
  color: var(--text-secondary);
}

body.recruiter-mode .mode-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}

body.recruiter-mode .mobile-menu-toggle {
  border-color: var(--border);
}

body.recruiter-mode .hamburger-line {
  background: var(--text-primary);
}

body.recruiter-mode .nav-right {
  /* background: var(--bg-secondary);
  border-left-color: var(--border); */
}

body.recruiter-mode .nav-links li {
  border-bottom-color: var(--border);
}

body.recruiter-mode .menu-overlay.is-visible {
  background: rgba(0, 0, 0, 0.3);
}

/* Hero */
body.recruiter-mode .hero {
  min-height: auto;
  padding-top: 10rem;
  padding-bottom: 4rem;
}

body.recruiter-mode h1 {
  font-size: 2.5rem;
  color: var(--text-primary);
}

body.recruiter-mode .highlight {
  color: var(--accent);
}

body.recruiter-mode .hero-description {
  font-size: 1.05rem;
  color: var(--text-secondary);
}

body.recruiter-mode .meta-item {
  color: var(--text-muted);
}

body.recruiter-mode .meta-item span {
  color: var(--text-primary);
}

body.recruiter-mode .hero-cards { display: none; }
body.recruiter-mode .scroll-indicator { display: none; }

/* Sections */
body.recruiter-mode .section-label {
  color: var(--accent);
}

body.recruiter-mode .section-title {
  color: var(--text-primary);
}

body.recruiter-mode .content-section.alt-bg {
  background: var(--bg-secondary);
}

/* Case Studies */
body.recruiter-mode .case-study {
  background: var(--bg-card);
  border-color: var(--border);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

body.recruiter-mode .case-study:hover {
  border-color: var(--accent);
}

body.recruiter-mode .case-study-info h3 {
  color: var(--text-primary);
}

body.recruiter-mode .case-study-meta {
  color: var(--text-muted);
}

body.recruiter-mode .case-study-summary {
  grid-template-columns: 1fr auto;
  gap: 1.5rem;
}

body.recruiter-mode .case-study-metrics {
  display: none;
}

body.recruiter-mode .case-study-arrow {
  color: var(--text-muted);
}

body.recruiter-mode .case-study-link:hover .case-study-arrow {
  color: var(--accent);
}

body.recruiter-mode .expand-btn {
  display: none;
}

body.recruiter-mode .case-study-details {
  max-height: none !important;
  border-top-color: var(--border);
}

/* Writing Section */
body.recruiter-mode .writing-layout {
  grid-template-columns: 1fr;
  gap: 2rem;
}

body.recruiter-mode .book-feature {
  grid-template-columns: 100px 1fr;
  gap: 1.5rem;
  padding: 1.5rem;
  background: var(--bg-card);
  border-color: var(--border);
  grid-template-rows: 100% 1fr;
}

body.recruiter-mode .book-cover {
  width: 100px;
  height: 140px;
  rotate: 0deg;
  padding-top: 0.5rem;
}

body.recruiter-mode .book-cover img {
  width: 68px;
  height: 110px;
}

body.recruiter-mode .book-title {
  color: var(--text-primary);
}

body.recruiter-mode .book-description {
  color: var(--text-secondary);
}

body.recruiter-mode .book-cta {
  background: var(--accent);
  color: #ffffff;
}

body.recruiter-mode .book-cta:hover {
  background: var(--accent-secondary);
}

body.recruiter-mode .article-card {
  background: var(--bg-card);
  border-color: var(--border);
}

body.recruiter-mode .article-card:hover {
  border-color: var(--accent);
}

body.recruiter-mode .article-card h4 {
  color: var(--text-primary);
}

body.recruiter-mode .article-card p {
  color: var(--text-muted);
}

/* About Section */
body.recruiter-mode .about-layout {
  grid-template-columns: 1fr;
  gap: 2rem;
}

body.recruiter-mode .about-text h2 {
  color: var(--text-primary);
}

body.recruiter-mode .about-text p {
  color: var(--text-secondary);
}

body.recruiter-mode .sidebar-card {
  background: var(--bg-card);
  border-color: var(--border);
}

body.recruiter-mode .sidebar-card h3 {
  color: var(--text-primary);
}

body.recruiter-mode .skill-category h4 {
  color: var(--accent);
}

body.recruiter-mode .skill-tag {
  background: var(--accent-dim);
  color: var(--accent);
}

/* Contact Section */
body.recruiter-mode .contact-layout {
  grid-template-columns: 1fr;
  gap: 2rem;
}

body.recruiter-mode .contact-simple {
  /* background: var(--bg-card);
  border-color: var(--border); */
}

body.recruiter-mode .linkedin-card {
  background: var(--bg-card);
  border-color: var(--border);
}

body.recruiter-mode .linkedin-card:hover {
  border-color: var(--accent);
}

body.recruiter-mode .linkedin-card h3 {
  color: var(--text-primary);
}

body.recruiter-mode .linkedin-card p {
  color: var(--text-secondary);
}

/* Footer */
body.recruiter-mode .footer {
  background: var(--bg-secondary);
  border-top-color: var(--border);
}

body.recruiter-mode .footer-content {
  color: var(--text-muted);
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */

@media (max-width: 1024px) {
  .hero-content { grid-template-columns: 1fr; }
  .hero-cards { display: none; }
  .writing-layout { grid-template-columns: 1fr; }
  .about-layout { grid-template-columns: 1fr; }
  .about-sidebar { flex-direction: row; flex-wrap: wrap; }
  .sidebar-card { flex: 1; min-width: 260px; }
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
  .outcomes-grid { grid-template-columns: 1fr; }
  .book-feature { grid-template-columns: 1fr; text-align: left; }
  .book-cover { margin: 0 auto 1rem; }
  .contact-layout { grid-template-columns: 1fr; }
  .contact-sidebar { flex-direction: row; gap: 1rem; }
  .contact-sidebar > * { flex: 1; }
}

@media (max-width: 768px) {
  :root { --section-padding: 5rem; }
  nav { padding: 1rem 1.5rem; }
  .hero { padding: 0 1.5rem; }
  h1 { font-size: 2rem; }
  .hero-meta { flex-direction: column; gap: 1rem; }
  .scroll-indicator { display: none; }
  .section-container { padding: 0 1.5rem; }
  .case-study-summary { 
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .case-study-metrics { flex-wrap: wrap; gap: 1rem; }
  .details-content { padding: 1.5rem; }
  .details-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .book-feature { padding: 1.5rem; }
  .contact-sidebar { flex-direction: column; }
  .outcomes-grid { grid-template-columns: 1fr 1fr; }
}

/* ==========================================================================
   UTILITIES
   ========================================================================== */

.recruiter-only { display: none; }
body.recruiter-mode .recruiter-only { display: block; }
body.recruiter-mode .explorer-only { display: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  #canvas { display: none; }
  .canvas-fallback { display: block; }
}

:focus-visible { 
  outline: 2px solid var(--accent); 
  outline-offset: 2px; 
}