:root {
  --bg: #05060f;
  --bg-alt: #0a0c1c;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-hover: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.1);
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --accent-1: #7c3aed;
  --accent-2: #2563eb;
  --accent-3: #06b6d4;
  --gradient: linear-gradient(120deg, var(--accent-1), var(--accent-2), var(--accent-3));
  --space-sm: 0.75rem;
  --space-md: 1.5rem;
  --space-lg: 3rem;
  --space-xl: 6rem;
  --radius: 14px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  position: relative;
  overflow-x: hidden;
}

h1, h2, h3 {
  line-height: 1.2;
  margin: 0 0 var(--space-sm);
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.75rem, 7vw, 4.5rem); font-weight: 800; }
h2 { font-size: clamp(1.75rem, 3vw, 2.25rem); font-weight: 700; }
h3 { font-size: 1.2rem; font-weight: 700; }

p { margin: 0 0 var(--space-sm); color: var(--text-muted); }

a {
  color: var(--accent-3);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

:focus-visible {
  outline: 2px solid var(--accent-3);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent-2);
  color: #fff;
  padding: 0.5rem 1rem;
  z-index: 200;
}

.skip-link:focus {
  left: var(--space-md);
  top: var(--space-md);
}

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

.section {
  padding: var(--space-xl) 0;
  position: relative;
}

.alt-bg {
  background: var(--bg-alt);
}

/* Animated backdrop */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.cursor-glow {
  position: fixed;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.18), transparent 70%);
  pointer-events: none;
  transform: translate(-50%, -50%);
  z-index: 1;
  transition: opacity 0.3s ease;
  will-change: transform;
}

@media (max-width: 768px) {
  .cursor-glow {
    display: none;
  }
}

.gradient-text {
  background: var(--gradient);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: gradient-shift 6s ease infinite;
}

@keyframes gradient-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

/* Reveal-on-scroll */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* Navbar */
#navbar {
  position: sticky;
  top: 0;
  background: rgba(5, 6, 15, 0.7);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 50;
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  gap: var(--space-md);
}

.logo {
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text);
  letter-spacing: -0.02em;
}

.logo-dot {
  color: var(--accent-3);
}

.nav-links {
  list-style: none;
  display: flex;
  gap: var(--space-md);
  margin: 0;
  padding: 0;
  flex: 1;
  justify-content: center;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
}

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

.nav-resume {
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn-sm {
  padding: 0.5rem 1.1rem;
  font-size: 0.85rem;
}

.btn-primary {
  background: var(--gradient);
  background-size: 200% 200%;
  color: #fff;
  box-shadow: 0 0 24px rgba(124, 58, 237, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 32px rgba(124, 58, 237, 0.5);
  text-decoration: none;
}

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--surface-hover);
  transform: translateY(-2px);
  text-decoration: none;
}

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

.btn-ghost:hover {
  color: var(--text);
  text-decoration: none;
}

/* Hero */
.hero {
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding-top: var(--space-lg);
}

.hero-inner {
  max-width: 780px;
}

.hero-photo {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: var(--space-md);
  border: 3px solid var(--accent-1);
  box-shadow: 0 0 30px rgba(124, 58, 237, 0.4);
}

.eyebrow {
  font-size: 0.95rem;
  color: var(--accent-3);
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.role-line {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 600;
  color: var(--text);
  margin-bottom: var(--space-md);
  min-height: 2em;
}

.typed-role {
  border-right: none;
}

.cursor-blink {
  color: var(--accent-3);
  animation: blink 1s step-start infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.tagline {
  max-width: 640px;
  font-size: 1.05rem;
  margin-bottom: var(--space-md);
}

.tagline strong {
  color: var(--text);
}

.cta-group {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--space-lg);
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  max-width: 700px;
}

.stat-box {
  display: flex;
  flex-direction: column;
}

.stat-num {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.scroll-cue {
  position: absolute;
  bottom: var(--space-md);
  left: 50%;
  transform: translateX(-50%);
  width: 26px;
  height: 42px;
  border: 2px solid var(--border);
  border-radius: 20px;
}

.scroll-cue span {
  display: block;
  width: 4px;
  height: 8px;
  background: var(--accent-3);
  border-radius: 2px;
  margin: 6px auto;
  animation: scroll-cue 1.6s ease infinite;
}

@keyframes scroll-cue {
  0% { transform: translateY(0); opacity: 1; }
  70% { transform: translateY(14px); opacity: 0; }
  100% { opacity: 0; }
}

/* Section heading */
.section-heading {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: var(--space-lg);
}

.heading-index {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-size: 1.1rem;
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-md);
}

.bio {
  font-size: 1.05rem;
  color: var(--text-muted);
}

.bio strong {
  color: var(--text);
}

.about-facts {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  border-left: 2px solid var(--border);
  padding-left: var(--space-md);
}

.fact {
  display: flex;
  flex-direction: column;
}

.fact-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-3);
}

.fact-value {
  color: var(--text);
  font-weight: 600;
}

.cs-fundamentals {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding: 0;
  margin: var(--space-md) 0 0;
}

.cs-fundamentals li {
  font-size: 0.85rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.35rem 0.9rem;
}

/* Skill groups */
.skill-group {
  margin-bottom: var(--space-md);
}

.skill-group-title {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.badge-grid {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin: 0;
  padding: 0;
}

.badge {
  display: inline-block;
  padding: 0.45rem 1rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.9rem;
  color: var(--text);
  background: var(--surface);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.badge:hover {
  border-color: var(--accent-3);
  transform: translateY(-2px);
}

.badge.hot {
  border-color: var(--accent-1);
  background: linear-gradient(120deg, rgba(124, 58, 237, 0.18), rgba(6, 182, 212, 0.18));
  font-weight: 700;
}

/* Timeline */
.timeline-item {
  border-left: 2px solid var(--border);
  padding-left: var(--space-md);
  position: relative;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -6px;
  top: 4px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gradient);
  box-shadow: 0 0 12px rgba(124, 58, 237, 0.6);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin-bottom: var(--space-sm);
}

.timeline-company {
  display: block;
  color: var(--accent-3);
  font-size: 0.9rem;
  margin-top: 0.25rem;
}

.timeline-date {
  color: var(--text-muted);
  font-size: 0.85rem;
  white-space: nowrap;
}

.timeline-bullets {
  list-style: none;
  padding: 0;
  margin: 0;
}

.timeline-bullets li {
  position: relative;
  padding-left: 1.1rem;
  margin-bottom: 0.6rem;
  color: var(--text-muted);
}

.timeline-bullets li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent-3);
}

.timeline-bullets strong {
  color: var(--text);
}

/* Projects */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-md);
}

.project-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-md);
  background: var(--surface);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  transform-style: preserve-3d;
  will-change: transform;
}

.project-card:hover {
  border-color: rgba(124, 58, 237, 0.5);
  box-shadow: 0 20px 40px -20px rgba(37, 99, 235, 0.4);
}

.project-card.featured {
  border-color: rgba(124, 58, 237, 0.4);
  background: linear-gradient(160deg, rgba(124, 58, 237, 0.12), rgba(6, 182, 212, 0.06));
}

.project-card-top {
  margin-bottom: 0.5rem;
}

.project-tag {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-3);
  font-weight: 700;
}

.project-card p {
  font-size: 0.95rem;
}

.tech-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: var(--space-sm);
}

.tech-badges .badge {
  padding: 0.3rem 0.8rem;
  font-size: 0.8rem;
}

.project-link.disabled {
  color: var(--text-muted);
  font-size: 0.85rem;
  cursor: default;
}

/* Achievements */
.achievement-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-md);
}

.achievement-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-md);
  background: var(--surface);
  text-align: center;
  transition: transform 0.2s ease;
}

.achievement-card:hover {
  transform: translateY(-4px);
}

.achievement-num {
  display: block;
  font-size: 2.25rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.achievement-label {
  display: block;
  font-weight: 700;
  color: var(--text);
  margin-top: 0.35rem;
}

.achievement-desc {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* Contact */
.contact-inner {
  text-align: center;
}

.contact-inner p {
  max-width: 480px;
  margin: 0 auto var(--space-md);
}

.contact-email {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  display: inline-block;
  margin-bottom: var(--space-lg);
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.profile-links {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
}

.profile-badge {
  display: inline-block;
  padding: 0.75rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  border: 1px solid var(--border);
  color: var(--text);
  background: var(--surface);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.profile-badge:hover {
  border-color: var(--accent-3);
  transform: translateY(-2px);
  text-decoration: none;
}

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: var(--space-md) 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  position: relative;
  z-index: 1;
}

/* Responsive */
@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(5, 6, 15, 0.97);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: var(--space-md);
    display: none;
  }

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

  .stats-row {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .section {
    padding: var(--space-lg) 0;
  }

  .cta-group {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}