:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #111118;
  --bg-card: #16161f;
  --bg-card-hover: #1c1c28;
  --accent: #6c63ff;
  --accent-light: #8b83ff;
  --accent-glow: rgba(108, 99, 255, 0.15);
  --text-primary: #e8e6f0;
  --text-secondary: #9590a8;
  --text-muted: #5c5878;
  --border: #222233;
  --border-light: #2a2a3d;
  --gradient-start: #6c63ff;
  --gradient-end: #e44dff;
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

::selection {
  background: var(--accent);
  color: white;
}

/* ── NAVBAR ── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 3rem;
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}

.navbar.scrolled {
  border-bottom-color: var(--border);
}

.nav-brand {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
  transition: var(--transition);
}

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

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
}

/* ── HERO ── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 2rem;
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.3;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-content {
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-greeting {
  font-size: 1.1rem;
  color: var(--accent);
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 1rem;
  animation: fadeInUp 0.8s ease both;
}

.hero-name {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(3.5rem, 10vw, 8rem);
  font-weight: 800;
  line-height: 1;
  margin-bottom: 0.5rem;
  animation: fadeInUp 0.8s ease 0.1s both;
}

.hero-name .dot {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-title {
  font-size: clamp(1.2rem, 3vw, 2rem);
  font-weight: 400;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-sub {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  animation: fadeInUp 0.8s ease 0.4s both;
}

.btn {
  padding: 0.8rem 2rem;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  color: white;
  box-shadow: 0 4px 20px rgba(108, 99, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(108, 99, 255, 0.4);
}

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

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

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 0;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  animation: fadeInUp 0.8s ease 0.6s both;
}

.mouse {
  width: 24px;
  height: 38px;
  border: 2px solid var(--text-muted);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}

.wheel {
  width: 4px;
  height: 8px;
  background: var(--accent);
  border-radius: 2px;
  animation: scrollWheel 1.5s ease-in-out infinite;
}

.scroll-indicator p {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 2px;
}

@keyframes scrollWheel {
  0%, 100% { opacity: 1; transform: translateY(0); }
  50% { opacity: 0.3; transform: translateY(6px); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── CONTAINER / SECTIONS ── */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  padding: 6rem 0;
}

.section-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 3rem;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
  border-radius: 2px;
}

/* ── ABOUT ── */
.about {
  background: var(--bg-secondary);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  align-items: start;
}

.about-text p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.about-stats {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: var(--transition);
}

.stat-card:hover {
  border-color: var(--accent);
  background: var(--bg-card-hover);
}

.stat-number {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* ── EDUCATION ── */
.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--border));
}

.timeline-item {
  position: relative;
  margin-bottom: 3rem;
}

.timeline-marker {
  position: absolute;
  left: -2rem;
  top: 0.5rem;
  width: 12px;
  height: 12px;
  background: var(--accent);
  border-radius: 50%;
  transform: translateX(-5px);
  box-shadow: 0 0 12px rgba(108, 99, 255, 0.4);
}

.timeline-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: var(--transition);
}

.timeline-content:hover {
  border-color: var(--border-light);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 0.3rem;
  flex-wrap: wrap;
}

.timeline-header h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
}

.timeline-date {
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 500;
  white-space: nowrap;
}

.timeline-content h4 {
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: 1rem;
}

.timeline-note {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.timeline-details {
  list-style: none;
  margin-bottom: 1.5rem;
}

.timeline-details li {
  padding: 0.3rem 0;
  padding-left: 1.2rem;
  position: relative;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.timeline-details li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7rem;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

.grades-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
  margin-top: 1.5rem;
}

.grade-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem;
}

.grade-card h5 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--accent);
  margin-bottom: 0.8rem;
}

.grade-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.35rem 0;
  font-size: 0.85rem;
  border-bottom: 1px solid var(--border);
}

.grade-row:last-child {
  border-bottom: none;
}

.grade-row span:first-child {
  color: var(--text-secondary);
}

.grade {
  font-weight: 600;
  color: var(--text-primary);
  font-family: 'Space Grotesk', sans-serif;
}

.lc-grades {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.lc-tag {
  padding: 0.35rem 0.9rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: var(--transition);
}

.lc-tag:hover {
  border-color: var(--accent);
  color: var(--text-primary);
}

/* ── SKILLS ── */
.skills {
  background: var(--bg-secondary);
}

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

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: var(--transition);
}

.skill-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(108, 99, 255, 0.1);
}

.skill-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.2rem;
  color: var(--accent);
}

.skill-card h4 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.skill-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.skill-card .skill-tags {
  font-size: 0.8rem;
  color: var(--accent);
  margin-bottom: 0.75rem;
  letter-spacing: 0.02em;
}

/* ── EXPERIENCE ── */
.experience-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.exp-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: var(--transition);
}

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

.exp-card.featured {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, rgba(108, 99, 255, 0.08), rgba(228, 77, 255, 0.05));
  border-color: rgba(108, 99, 255, 0.3);
}

.exp-badge {
  display: inline-block;
  padding: 0.25rem 0.8rem;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 1rem;
}

.exp-card h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.exp-date {
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 500;
}

.exp-role {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin: 0.5rem 0 1rem;
}

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

.exp-card li {
  padding: 0.3rem 0;
  padding-left: 1.2rem;
  position: relative;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.exp-card li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7rem;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

/* ── PROJECTS ── */
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  transition: var(--transition);
}

.project-card:hover {
  border-color: var(--border-light);
}

.project-title-link {
  cursor: pointer;
  transition: color var(--transition);
}

.project-title-link:hover {
  color: var(--accent);
}

.expand-hint {
  font-size: 0.75rem;
  color: var(--accent);
  margin-left: 0.4rem;
  vertical-align: middle;
}

.project-cover {
  margin-bottom: 1.5rem;
  cursor: pointer;
}

.project-cover:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.project-detail {
  display: none;
}

.project-detail.active {
  display: block;
  animation: fadeInUp 0.4s ease both;
}

.detail-back {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 0.5rem 1.2rem;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  margin-bottom: 1.5rem;
  transition: var(--transition);
  font-family: inherit;
}

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

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.project-header h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.2rem;
}

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

.project-badge {
  display: inline-block;
  padding: 0.3rem 0.9rem;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
}

.project-desc {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.project-highlights {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

.highlight {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
}

.highlight-label {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--accent);
  margin-bottom: 0.3rem;
}

.highlight span:last-child {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.project-gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.8rem;
}

.project-gallery img {
  width: 100%;
  height: 260px;
  object-fit: contain;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
}

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

.gallery-large img {
  height: 380px;
}

.gallery-triple {
  grid-template-columns: repeat(3, 1fr);
}

.gallery-triple img {
  height: 320px;
}.project-gallery img:hover {
  border-color: var(--accent);
  transform: scale(1.02);
}

.project-video {
  width: 100%;
  margin-top: 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: #000;
}

.project-bullets {
  list-style: none;
  margin-bottom: 1.5rem;
}

.project-bullets li {
  padding: 0.35rem 0;
  padding-left: 1.2rem;
  position: relative;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.project-bullets li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7rem;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

/* ── INTERESTS ── */
.interests {
  background: var(--bg-secondary);
}

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

.interest-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  transition: var(--transition);
}

.interest-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}

.interest-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.interest-card h4 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.interest-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ── CONTACT ── */
.contact-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-top: -2rem;
  margin-bottom: 3rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.2rem;
}

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
  color: var(--text-secondary);
  transition: var(--transition);
}

.contact-card:hover {
  border-color: var(--accent);
  color: var(--text-primary);
  transform: translateY(-2px);
}

.contact-card svg {
  flex-shrink: 0;
  color: var(--accent);
}

/* ── FOOTER ── */
.footer {
  text-align: center;
  padding: 2rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ── REVEAL ANIMATION ── */
[data-reveal] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg-secondary);
    flex-direction: column;
    padding: 5rem 2rem 2rem;
    gap: 1.5rem;
    border-left: 1px solid var(--border);
    transition: var(--transition);
  }

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

  .nav-toggle {
    display: flex;
    z-index: 110;
  }

  .nav-toggle.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  .nav-toggle.open span:nth-child(2) {
    opacity: 0;
  }
  .nav-toggle.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

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

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

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

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

  .project-highlights {
    grid-template-columns: 1fr;
  }

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

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

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

@media (max-width: 600px) {
  .navbar {
    padding: 1rem 1.5rem;
  }

  .hero-name {
    font-size: 3.5rem;
  }

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

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

  .project-gallery {
    grid-template-columns: 1fr;
  }

  .section-title {
    font-size: 2rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  section {
    padding: 4rem 0;
  }
}