/* ============================================================
   Vrushabh Desai Portfolio - Dark Theme with Robotics Accents
   Inspired by Craftivo template layout patterns
   ============================================================ */

/* --- CSS Variables --- */
:root {
  --bg-primary: #0a0f1a;
  --bg-surface: #111827;
  --bg-surface-alt: #1e293b;
  --bg-surface-hover: #253347;
  --accent: #00d4ff;
  --accent-dim: rgba(0, 212, 255, 0.15);
  --accent-glow: rgba(0, 212, 255, 0.3);
  --accent-secondary: #7c3aed;
  --text-primary: #f8fafc;
  --text-secondary: #e2e8f0;
  --text-muted: #94a3b8;
  --border-color: rgba(0, 212, 255, 0.1);
  --border-subtle: rgba(255, 255, 255, 0.06);
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.1);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  scroll-behavior: smooth;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-primary);
  background-color: var(--bg-primary);
  color: var(--text-secondary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Circuit grid background pattern */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

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

a:hover {
  color: #4de8ff;
  text-decoration: none;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.3;
  text-wrap: balance;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.3rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: 1rem;
}

img {
  max-width: 100%;
  height: auto;
}

ul { list-style: none; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* --- Header & Navigation --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
  background: transparent;
}

.header.scrolled {
  background: rgba(10, 15, 26, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 12px 0;
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.logo span {
  color: var(--accent);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-menu a {
  color: var(--text-muted);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--text-primary);
  background: var(--accent-dim);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 8px;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: var(--bg-primary);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  transition: var(--transition);
}

.nav-cta:hover {
  background: #4de8ff;
  color: var(--bg-primary);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
}

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

  /* Hide text label on the Resume button; show icon only */
  .nav-cta {
    padding: 8px 10px;
    font-size: 0;        /* hides text */
    gap: 0;
  }
  .nav-cta i {
    font-size: 1.1rem;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg-surface);
    flex-direction: column;
    align-items: flex-start;
    padding: 80px 24px 24px;
    gap: 4px;
    transition: var(--transition);
    border-left: 1px solid var(--border-subtle);
  }

  .nav-menu.open {
    right: 0;
  }

  .nav-menu a {
    width: 100%;
    padding: 12px 16px;
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  /* Very small screens: even tighter */
  .nav-cta {
    padding: 7px 9px;
  }
}

/* --- Hero Section --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at center, rgba(0, 212, 255, 0.05) 0%, transparent 50%);
  animation: pulse-glow 8s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.1); }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.hero-subtitle {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 16px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.hero h1 {
  margin-bottom: 20px;
}

.hero-typed {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  color: var(--text-muted);
  min-height: 2em;
}

.hero-typed .typed-text {
  color: var(--accent);
  border-right: 2px solid var(--accent);
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  50% { border-color: transparent; }
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-top: 40px;
  flex-wrap: wrap;
}

.hero-social {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-top: 32px;
}

.hero-social a {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  transition: var(--transition);
}

.hero-social a:hover {
  color: var(--accent);
  border-color: var(--accent);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  text-decoration: none;
}

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

.btn-primary:hover {
  background: #4de8ff;
  color: var(--bg-primary);
  box-shadow: 0 0 24px rgba(0, 212, 255, 0.4);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

/* --- Section Styling --- */
.section {
  padding: 70px 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 40px;
}

.section-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 16px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-header p {
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.05rem;
}

/* Circuit accent line */
.circuit-line {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-secondary));
  border-radius: 3px;
  margin: 24px auto 0;
  position: relative;
}

.circuit-line::after {
  content: '';
  position: absolute;
  right: -8px;
  top: -3px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}

/* --- Stats Row --- */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 32px 0;
}

@media (max-width: 768px) {
  .stats-row { grid-template-columns: repeat(2, 1fr); }
}

.stat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-md);
  padding: 22px 20px 18px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

/* Subtle corner glow sweep */
.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 60px;
  height: 60px;
  background: radial-gradient(circle at top left, var(--accent-dim), transparent 70%);
  pointer-events: none;
  transition: var(--transition);
}

/* Watermark icon */
.stat-card .stat-icon {
  position: absolute;
  bottom: -6px;
  right: 12px;
  font-size: 3.6rem;
  color: var(--accent);
  opacity: 0.06;
  line-height: 1;
  pointer-events: none;
  transition: var(--transition);
}

.stat-card:hover {
  border-left-color: var(--accent);
  background: var(--bg-surface-hover);
  box-shadow: -2px 0 12px var(--accent-glow), var(--shadow-card);
  transform: translateY(-3px);
}

.stat-card:hover::before {
  width: 90px;
  height: 90px;
}

.stat-card:hover .stat-icon {
  opacity: 0.1;
}

.stat-card .stat-number {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 8px;
  letter-spacing: -1px;
}

.stat-card .stat-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  line-height: 1.3;
}

/* --- Profile Card --- */
.profile-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: sticky;
  top: 100px;
}

/* Banner header */
.profile-banner {
  height: 88px;
  background: linear-gradient(135deg, #0d1929 0%, var(--bg-surface-alt) 60%, #0a1525 100%);
  position: relative;
  overflow: hidden;
}

/* Circuit grid texture on banner */
.profile-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.07) 1px, transparent 1px);
  background-size: 18px 18px;
}

/* Glowing accent line at bottom of banner */
.profile-banner::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--accent) 40%, var(--accent-secondary) 70%, transparent 100%);
  opacity: 0.8;
}

/* Avatar ring */
.avatar-wrap {
  display: flex;
  justify-content: center;
  margin-top: -48px;
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
}

.profile-card .avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--bg-surface);
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  box-shadow: 0 0 24px var(--accent-glow);
}

/* Identity block */
.profile-identity {
  padding: 0 22px 20px;
  text-align: center;
}

.profile-identity h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.availability-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.68rem;
  font-family: var(--font-mono);
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 50px;
  padding: 3px 10px;
  margin-bottom: 14px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.profile-identity .role {
  font-size: 0.82rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-bottom: 6px;
}

.profile-identity .role i { color: var(--accent); font-size: 0.75rem; }

.profile-detail {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-bottom: 4px !important;
}

.profile-detail i { color: var(--accent); font-size: 0.75rem; }

/* Stats row — grid with dividers */
.profile-card .profile-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  margin: 0;
  padding: 0;
}

.profile-card .profile-stats .stat-item {
  padding: 14px 6px;
  text-align: center;
  border-right: 1px solid var(--border-subtle);
  transition: var(--transition);
}

.profile-card .profile-stats .stat-item:last-child { border-right: none; }

.profile-card .profile-stats .stat-item:hover { background: var(--bg-surface-hover); }

.profile-card .profile-stats .stat-item h4 {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 2px;
  letter-spacing: -0.5px;
}

.profile-card .profile-stats .stat-item p {
  font-size: 0.62rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin: 0;
}

/* Actions */
.profile-card .profile-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px 22px 0;
}

/* Social */
.profile-card .social-links {
  display: flex;
  justify-content: center;
  gap: 10px;
  padding: 18px 22px 22px;
}

.profile-card .social-links a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.95rem;
  transition: var(--transition);
}

.profile-card .social-links a:hover {
  color: var(--accent);
  border-color: var(--accent);
  box-shadow: var(--shadow-glow);
}

/* --- Content Sections --- */
.content-block {
  margin-bottom: 36px;
}

.content-block .section-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.content-block h2 {
  margin-bottom: 16px;
  font-size: 1.6rem;
}

/* --- About Layout --- */
.about-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 48px;
  align-items: start;
}

@media (max-width: 968px) {
  .about-layout {
    grid-template-columns: 1fr;
  }

  .profile-card {
    position: static;
    max-width: 360px;
    margin: 0 auto;
  }
}

/* --- Details Grid --- */
.details-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin: 24px 0;
}

.detail-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px;
  background: var(--bg-surface);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  transition: var(--transition);
}

.detail-item:hover {
  border-color: var(--border-color);
}

.detail-item i {
  font-size: 1.3rem;
  color: var(--accent);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.detail-item span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.detail-item strong {
  display: block;
  font-size: 0.9rem;
  color: var(--text-primary);
}

/* --- Education Timeline --- */
.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent), var(--accent-secondary), transparent);
}

.timeline-item {
  position: relative;
  padding-bottom: 32px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -28px;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent-glow);
  border: 2px solid var(--bg-primary);
}

.timeline-item .timeline-meta {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.timeline-item .year-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 3px 10px;
  border-radius: 50px;
}

.timeline-item .degree-badge {
  font-size: 0.75rem;
  color: var(--text-muted);
  background: var(--bg-surface-alt);
  padding: 3px 10px;
  border-radius: 50px;
}

.timeline-item h4 {
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.timeline-item .institution {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 4px;
}

.timeline-item .gpa {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
}

/* --- Skills Section --- */
.skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 16px 0;
}

.skill-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 50px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  transition: var(--transition);
}

.skill-tag:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: var(--shadow-glow);
}

.skill-tag i {
  color: var(--accent);
  font-size: 0.9rem;
}

/* --- Experience Cards --- */
.experience-cards {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.exp-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.exp-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--accent), var(--accent-secondary));
  opacity: 0;
  transition: var(--transition);
}

.exp-card:hover {
  border-color: var(--border-color);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.exp-card:hover::before {
  opacity: 1;
}

.exp-card.featured {
  border-color: var(--border-color);
}

.exp-card.featured::before {
  opacity: 1;
}

.exp-card .card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
}

.exp-card .company-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  border-radius: var(--radius-sm);
  color: var(--accent);
  font-size: 1.2rem;
}

.exp-card .period-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 4px 12px;
  border-radius: 50px;
}

.exp-card h3 {
  font-size: 1.15rem;
  margin-bottom: 4px;
}

.exp-card .company-name {
  color: var(--accent);
  font-size: 0.9rem;
  margin-bottom: 12px;
}

.exp-card .description {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.exp-card .description ul {
  list-style: none;
  padding: 0;
}

.exp-card .description li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 8px;
}

.exp-card .description li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent);
}

.exp-bullet-group {
  margin-bottom: 14px;
}

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

.exp-bullet-category {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: none;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border-subtle);
}

.exp-card .skills-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.exp-card .skills-tags span {
  font-size: 0.72rem;
  padding: 4px 10px;
  background: var(--bg-surface-alt);
  border-radius: 50px;
  color: var(--text-muted);
}

/* --- Project Cards --- */
.projects-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  background: var(--bg-surface);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--accent-dim);
  color: var(--accent);
  border-color: var(--accent);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}

@media (max-width: 768px) {
  .projects-grid {
    grid-template-columns: 1fr;
  }
}

.project-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  border-color: var(--border-color);
  box-shadow: var(--shadow-glow);
  transform: translateY(-3px);
}

.project-card .project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 10px;
}

.project-card .project-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  border-radius: var(--radius-sm);
  color: var(--accent);
}

.project-card .project-links a {
  color: var(--text-muted);
  margin-left: 10px;
  font-size: 1.1rem;
  transition: var(--transition);
}

.project-card .project-links a:hover {
  color: var(--accent);
}

.project-card h4 {
  font-size: 0.92rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.project-card .project-date {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.project-card .project-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.5;
  flex: 1;
  margin-bottom: 12px;
}

.project-card .project-desc-bullets {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.55;
  flex: 1;
  margin-bottom: 12px;
  padding-left: 0;
  list-style: none;
}

.project-card .project-desc-bullets li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 6px;
}

.project-card .project-desc-bullets li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent);
}

.project-card .project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-bottom: 12px;
}

.project-card .project-tech span {
  font-size: 0.7rem;
  padding: 3px 9px;
  background: var(--bg-surface-alt);
  border-radius: 50px;
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
}

/* --- Contact Section --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.contact-item:hover {
  border-color: var(--border-color);
}

.contact-item .icon-wrapper {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  border-radius: var(--radius-sm);
  color: var(--accent);
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-item h4 {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 2px;
}

.contact-item p, .contact-item a {
  color: var(--text-primary);
  font-size: 0.95rem;
  margin: 0;
  word-break: break-word;
  overflow-wrap: break-word;
}

/* The text container div must not overflow its flex parent */
.contact-item > div:last-child {
  min-width: 0;
  overflow: hidden;
}

/* --- Achievements --- */
.achievements-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.achievement-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 20px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.achievement-item:hover {
  border-color: var(--border-color);
}

.achievement-item .trophy-icon {
  color: #fbbf24;
  font-size: 1.3rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.achievement-item p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* --- Coursework --- */
.coursework-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
}

.course-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: var(--transition);
}

.course-item:hover {
  border-color: var(--border-color);
}

.course-item i {
  color: var(--accent);
  font-size: 0.8rem;
}

/* --- Footer --- */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border-subtle);
  text-align: center;
}

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

.footer .social-links {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 16px;
}

.footer .social-links a {
  color: var(--text-muted);
  font-size: 1.1rem;
  transition: var(--transition);
}

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

/* --- Back to Top --- */
.back-to-top {
  position: fixed;
  bottom: 30px;
  left: 30px;
  width: 44px;
  height: 44px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  z-index: 999;
  border-radius: 50% !important;
  transition: opacity 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease !important;
}

.back-to-top:hover {
  transform: translateY(-3px);
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}

/* --- 404 Page --- */
.not-found {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.not-found h1 {
  font-size: 6rem;
  color: var(--accent);
  margin-bottom: 16px;
}

/* --- Animations --- */
[data-animate] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].visible {
  opacity: 1;
  transform: translateY(0);
}

[data-animate="fade-left"] {
  transform: translateX(-20px);
}

[data-animate="fade-left"].visible {
  transform: translateX(0);
}

[data-animate="fade-right"] {
  transform: translateX(20px);
}

[data-animate="fade-right"].visible {
  transform: translateX(0);
}

[data-animate="zoom-in"] {
  transform: scale(0.95);
}

[data-animate="zoom-in"].visible {
  transform: scale(1);
}

/* Stagger animation delays */
[data-delay="100"] { transition-delay: 0.1s; }
[data-delay="200"] { transition-delay: 0.2s; }
[data-delay="300"] { transition-delay: 0.3s; }
[data-delay="400"] { transition-delay: 0.4s; }
[data-delay="500"] { transition-delay: 0.5s; }

/* --- Utilities --- */
.text-accent { color: var(--accent); }
.text-muted { color: var(--text-muted); }
.mb-0 { margin-bottom: 0; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mt-8 { margin-top: 32px; }

/* --- Responsive Adjustments --- */
@media (max-width: 480px) {
  .section { padding: 48px 0; }
  .hero { padding: 100px 16px 60px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .details-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

/* --- Project Image Placeholder --- */
.project-thumb {
  width: 100%;
  height: 140px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface-alt);
  border: 1px dashed var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  overflow: hidden;
  position: relative;
}

.project-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.project-thumb .placeholder-icon {
  color: var(--text-muted);
  font-size: 2rem;
  opacity: 0.4;
}

/* --- Project Link Badges --- */
.project-links {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.project-links .link-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border-radius: 50px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: var(--transition);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  background: var(--bg-surface-alt);
}

.project-links .link-badge:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

.project-links .link-badge i {
  font-size: 0.85rem;
}

.project-links .link-badge.video {
  border-color: rgba(239, 68, 68, 0.3);
  color: #fca5a5;
}

.project-links .link-badge.video:hover {
  border-color: #ef4444;
  color: #ef4444;
  box-shadow: 0 0 12px rgba(239, 68, 68, 0.2);
}

.project-links .link-badge.report {
  border-color: rgba(59, 130, 246, 0.3);
  color: #93c5fd;
}

.project-links .link-badge.report:hover {
  border-color: #3b82f6;
  color: #3b82f6;
  box-shadow: 0 0 12px rgba(59, 130, 246, 0.2);
}

.project-links .link-badge.github {
  border-color: rgba(168, 162, 158, 0.3);
  color: #d6d3d1;
}

.project-links .link-badge.github:hover {
  border-color: #e7e5e4;
  color: #e7e5e4;
  box-shadow: 0 0 12px rgba(168, 162, 158, 0.2);
}

/* --- Tighter Experience Card Spacing --- */
.experience-cards {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.exp-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.exp-card .description li {
  margin-bottom: 4px;
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  [data-animate] {
    opacity: 1;
    transform: none;
  }
}

/* ============================================================
   NEW COMPONENT STYLES
   ============================================================ */

/* --- Work Experience Timeline (experience.html) ----------- */
/* Extends the existing .timeline used in about.html education  */
.timeline.timeline-work {
  padding-left: 52px;
}

.timeline.timeline-work::before {
  left: 12px;
  top: 30px;
  bottom: 8px;
}

.timeline.timeline-work .timeline-item {
  padding-bottom: 32px;
}

.timeline.timeline-work .timeline-item::before {
  left: -43px;
  top: 34px;
  width: 18px;
  height: 18px;
  background: var(--accent);
  box-shadow: 0 0 14px var(--accent-glow);
}

.timeline.timeline-work .timeline-meta {
  margin-bottom: 14px;
}

/* Remove the left-border pseudo on exp-cards inside timeline
   (avoids double accent on timeline + card)  */
.timeline.timeline-work .exp-card::before {
  display: none;
}

.timeline.timeline-work .exp-card {
  margin-top: 0;
}

/* Exp-card links row (DJS Racing, etc.) */
.exp-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
}

@media (max-width: 600px) {
  .timeline.timeline-work {
    padding-left: 36px;
  }
  .timeline.timeline-work::before {
    left: 6px;
  }
  .timeline.timeline-work .timeline-item::before {
    left: -33px;
    width: 14px;
    height: 14px;
  }
}

/* --- Quick Info Bar (about.html detail tiles) ------------- */
.quick-info-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: 24px 0;
}

.quick-info-item {
  padding: 22px 16px;
  text-align: center;
  border-right: 1px solid var(--border-subtle);
  transition: var(--transition);
  position: relative;
}

.quick-info-item:last-child {
  border-right: none;
}

.quick-info-item:hover {
  background: var(--bg-surface-hover);
}

.quick-info-item:hover .qi-icon {
  transform: translateY(-2px);
}

.quick-info-item .qi-icon {
  display: block;
  font-size: 1.3rem;
  color: var(--accent);
  margin-bottom: 10px;
  transition: var(--transition);
}

.quick-info-item .qi-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 7px;
}

.quick-info-item .qi-value {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.35;
}

@media (max-width: 640px) {
  .quick-info-bar {
    grid-template-columns: repeat(2, 1fr);
  }
  .quick-info-item:nth-child(2) {
    border-right: none;
  }
  .quick-info-item:nth-child(1),
  .quick-info-item:nth-child(2) {
    border-bottom: 1px solid var(--border-subtle);
  }
}

/* --- Project Date Badge (styled like exp period-badge) ---- */
.project-date-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 3px 10px;
  border-radius: 50px;
  margin-top: 2px;
  margin-bottom: 10px;
}

/* --- Icon-only project link buttons with hover tooltip ----- */
.project-footer {
  margin-top: auto;
  padding-top: 12px;
  display: flex;
  justify-content: flex-end;
}

/* Override old .project-links for icon buttons */
.project-footer .project-links {
  display: flex;
  gap: 6px;
  justify-content: flex-end;
  flex-wrap: wrap;
}

.project-link-icon {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: var(--transition);
  text-decoration: none;
  flex-shrink: 0;
}

/* Tooltip label above the icon */
.project-link-icon::before {
  content: attr(data-label);
  position: absolute;
  bottom: calc(100% + 7px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-surface-alt);
  color: var(--text-primary);
  font-size: 0.65rem;
  font-family: var(--font-mono);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 3px 8px;
  border-radius: 4px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease;
  border: 1px solid var(--border-subtle);
  z-index: 10;
}

/* Tooltip arrow */
.project-link-icon::after {
  content: '';
  position: absolute;
  bottom: calc(100% + 3px);
  left: 50%;
  transform: translateX(-50%);
  border: 4px solid transparent;
  border-top-color: var(--border-subtle);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease;
}

.project-link-icon:hover::before,
.project-link-icon:hover::after {
  opacity: 1;
}

.project-link-icon:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.project-link-icon.video:hover {
  border-color: #ef4444;
  color: #ef4444;
  box-shadow: 0 0 10px rgba(239, 68, 68, 0.2);
}

.project-link-icon.report:hover {
  border-color: #3b82f6;
  color: #3b82f6;
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.2);
}

.project-link-icon.github:hover {
  border-color: #d6d3d1;
  color: #d6d3d1;
}

/* --- Certification link items (about.html) ----------------- */
.cert-link {
  text-decoration: none;
  cursor: pointer;
}

.cert-link:hover {
  border-color: var(--accent) !important;
  color: var(--accent) !important;
}

.cert-link:hover i {
  color: var(--accent);
}

.cert-issuer {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-left: 4px;
}

/* --- Contact Page Reorganized Layout --------------------- */
.contact-section {
  margin-bottom: 48px;
}

.contact-section > .section-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 20px;
  display: block;
}

.contact-items-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.resume-cta-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px 32px;
  flex-wrap: wrap;
}

.resume-cta-card h3 {
  font-size: 1.25rem;
  margin-bottom: 6px;
}

.resume-cta-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 0;
}

.social-cards-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.social-card-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: var(--transition);
  text-decoration: none;
}

.social-card-item:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.social-card-item .social-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  border-radius: var(--radius-sm);
  color: var(--accent);
  font-size: 1.3rem;
  flex-shrink: 0;
}

.social-card-item .social-info h4 {
  font-size: 0.95rem;
  margin-bottom: 2px;
  color: var(--text-primary);
}

.social-card-item .social-info p {
  font-size: 0.82rem;
  color: var(--accent);
  margin: 0;
}

/* --- Project Bottom Row: skills + link icons side-by-side -------- */
.project-bottom {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.project-bottom .project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  flex: 1;
  min-width: 0;
  margin-bottom: 0; /* override card default */
}

.project-bottom .project-links {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
  align-items: center;
}

/* Remove old project-footer whitespace */
.project-footer {
  display: none;
}

/* --- Grouped experience links (DJS Racing, etc.) ----------------- */
.exp-links-grouped {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
}

.exp-link-group {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.exp-link-group-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  background: var(--bg-surface-alt);
  padding: 2px 8px;
  border-radius: 4px;
  white-space: nowrap;
  border: 1px solid var(--border-subtle);
  flex-shrink: 0;
}

.exp-link-group-items {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}