:root {
  --bg: #0a0e17;
  --bg-alt: #0d1320;
  --surface: #111827;
  --surface-2: #161f2e;
  --border: rgba(255, 255, 255, 0.08);
  --text: #e6edf5;
  --text-dim: #93a1b8;
  --text-faint: #5b6b85;
  --accent: #00d4ff;
  --accent-2: #7c5cff;
  --accent-grad: linear-gradient(135deg, #00d4ff 0%, #7c5cff 100%);
  --success: #4ade80;
  --radius: 16px;
  --container: 1180px;
  --shadow: 0 20px 60px -20px rgba(0, 212, 255, 0.15);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Sora', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }

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

ul { list-style: none; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Background decor ===== */
.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.6), transparent 60%);
}

.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.18;
  pointer-events: none;
  z-index: 0;
}
.bg-glow--1 {
  width: 600px; height: 600px;
  background: var(--accent);
  top: -200px; right: -150px;
}
.bg-glow--2 {
  width: 500px; height: 500px;
  background: var(--accent-2);
  bottom: 10%; left: -200px;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(10, 14, 23, 0.7);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s;
}
.header.scrolled {
  border-bottom-color: var(--border);
  background: rgba(10, 14, 23, 0.92);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.logo__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: 10px;
  background: var(--accent-grad);
  color: #0a0e17;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 800;
  font-size: 0.85rem;
}

.nav {
  display: flex;
  gap: 28px;
  flex-wrap: nowrap;
}
.nav__link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-dim);
  position: relative;
  padding: 6px 0;
  transition: color 0.2s;
  white-space: nowrap;
}
.nav__link::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--accent-grad);
  transition: width 0.25s;
  border-radius: 2px;
}
.nav__link:hover,
.nav__link.active {
  color: var(--text);
}
.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.lang-switch {
  display: flex;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px;
  gap: 2px;
}
.lang-switch__btn {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  border: none;
  background: transparent;
  color: var(--text-dim);
  padding: 6px 11px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s;
}
.lang-switch__btn:hover { color: var(--text); }
.lang-switch__btn.active {
  background: var(--accent-grad);
  color: #0a0e17;
}

.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px; height: 38px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  cursor: pointer;
}
.burger span {
  display: block;
  width: 16px; height: 2px;
  margin: 0 auto;
  background: var(--text);
  border-radius: 2px;
  transition: 0.25s;
}
.burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 76px;
  z-index: 1;
}
.hero__inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
  padding: 60px 24px;
}

.hero__greeting {
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent);
  font-size: 1rem;
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}
.hero__name {
  font-size: clamp(2.4rem, 5.5vw, 4.2rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
  background: linear-gradient(135deg, #fff 30%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero__role {
  font-size: clamp(1.2rem, 2.4vw, 1.7rem);
  font-weight: 600;
  color: var(--text-dim);
  margin-bottom: 22px;
  font-family: 'JetBrains Mono', monospace;
  min-height: 1.4em;
}
.hero__role .cursor {
  color: var(--accent);
  animation: blink 1s step-end infinite;
  margin-left: 4px;
}
.hero__tagline {
  font-size: 1.05rem;
  color: var(--text-dim);
  max-width: 540px;
  margin-bottom: 32px;
}
.hero__cta {
  display: flex;
  gap: 16px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s, color 0.2s;
}
.btn--primary {
  background: var(--accent-grad);
  color: #061018;
  box-shadow: 0 8px 24px -8px rgba(0, 212, 255, 0.5);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 12px 30px -8px rgba(0, 212, 255, 0.6); }
.btn--ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

.hero__socials {
  display: flex;
  gap: 14px;
}
.social-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px; height: 42px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-dim);
  transition: all 0.2s;
}
.social-icon svg { width: 18px; height: 18px; }
.social-icon:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-3px);
}

/* Terminal visual */
.hero__visual { display: flex; justify-content: center; }
.terminal {
  width: 100%;
  max-width: 460px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.terminal__bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 16px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
}
.dot { width: 11px; height: 11px; border-radius: 50%; }
.dot--red { background: #ff5f56; }
.dot--yellow { background: #ffbd2e; }
.dot--green { background: #27c93f; }
.terminal__title {
  margin-left: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--text-faint);
}
.terminal__body {
  padding: 22px 20px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.88rem;
}
.terminal__body p { margin-bottom: 10px; word-break: break-word; }
.terminal__body .prompt { color: var(--accent); margin-right: 8px; }
.terminal__body .out { color: var(--text-dim); padding-left: 20px; }
.terminal__body .out--success { color: var(--success); }
.blink { animation: blink 1s step-end infinite; color: var(--accent); }

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

.scroll-down {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  width: 38px; height: 38px;
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  animation: bounce 2.2s infinite;
}
.scroll-down svg { width: 18px; height: 18px; }
@keyframes bounce {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, 8px); }
}

/* ===== Sections ===== */
.section {
  position: relative;
  padding: 110px 0;
  z-index: 1;
}
.section--alt { background: var(--bg-alt); }

.kicker {
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}
.section__title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  margin-bottom: 48px;
  letter-spacing: -0.01em;
}

/* ===== About ===== */
.about__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 50px;
  align-items: start;
}
.about__text p {
  color: var(--text-dim);
  margin-bottom: 18px;
  font-size: 1.02rem;
}
.about__highlights {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 28px;
}
.highlight-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  font-size: 0.88rem;
  font-weight: 500;
  transition: border-color 0.2s, transform 0.2s;
}
.highlight-item:hover { border-color: var(--accent); transform: translateY(-2px); }
.highlight-item .icon-wrap {
  flex-shrink: 0;
  width: 34px; height: 34px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 212, 255, 0.1);
  color: var(--accent);
}
.highlight-item .icon-wrap svg { width: 17px; height: 17px; }

/* ===== Profile Photo ===== */
.profile-photo-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}
.profile-photo {
  position: relative;
  width: 130px; height: 130px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid transparent;
  background: var(--accent-grad) border-box, var(--surface-2) padding-box;
  box-shadow: 0 8px 32px rgba(0,212,255,0.25);
  flex-shrink: 0;
}
.profile-photo img {
  width: 100%; height: 100%;
  object-fit: cover;
  border-radius: 50%;
  display: block;
}
.profile-initials {
  width: 100%; height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  font-weight: 800;
  font-family: 'JetBrains Mono', monospace;
  background: var(--accent-grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: none;
}
.profile-badge {
  display: flex;
  align-items: center;
  gap: 7px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.78rem;
  font-weight: 600;
}
.badge-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--success);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.about__card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  overflow: hidden;
}
.about__card-glow {
  position: absolute;
  top: -60px; right: -60px;
  width: 180px; height: 180px;
  background: var(--accent-grad);
  filter: blur(80px);
  opacity: 0.25;
}
.info-row { display: flex; align-items: center; gap: 16px; position: relative; z-index: 1; }
.info-icon {
  flex-shrink: 0;
  width: 44px; height: 44px;
  border-radius: 10px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}
.info-icon svg { width: 19px; height: 19px; }
.info-label {
  font-size: 0.78rem;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 3px;
}
.info-value { font-size: 0.98rem; font-weight: 600; word-break: break-word; }

/* ===== Skills ===== */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.skill-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.skill-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
  box-shadow: var(--shadow);
}
.skill-card__icon {
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--accent-grad);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #06121a;
  margin-bottom: 18px;
}
.skill-card__icon svg { width: 22px; height: 22px; }
.skill-card h3 { font-size: 1.08rem; font-weight: 700; margin-bottom: 14px; }
.skill-card ul li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-dim);
  padding: 5px 0;
}
.skill-card ul li::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* ===== Experience timeline ===== */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-left: 36px;
  border-left: 2px solid var(--border);
}
.timeline-item {
  position: relative;
  padding-bottom: 44px;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: -42px;
  top: 4px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--bg);
  border: 3px solid var(--accent);
}
.timeline-item__period {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 6px;
  letter-spacing: 0.04em;
}
.timeline-item__role { font-size: 1.2rem; font-weight: 700; margin-bottom: 4px; }
.timeline-item__company { font-size: 0.92rem; color: var(--text-dim); margin-bottom: 14px; }
.timeline-item__company .loc { color: var(--text-faint); }
.timeline-item ul { display: flex; flex-direction: column; gap: 8px; }
.timeline-item ul li {
  display: flex;
  gap: 10px;
  font-size: 0.92rem;
  color: var(--text-dim);
}
.timeline-item ul li::before {
  content: '▹';
  color: var(--accent);
  flex-shrink: 0;
}

/* ===== Projects ===== */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.project-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-2);
  box-shadow: 0 20px 60px -25px rgba(124, 92, 255, 0.35);
}
.project-card__icon {
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-2);
  margin-bottom: 18px;
}
.project-card__icon svg { width: 22px; height: 22px; }
.project-card h3 { font-size: 1.12rem; font-weight: 700; margin-bottom: 12px; }
.project-card p { font-size: 0.92rem; color: var(--text-dim); margin-bottom: 20px; flex-grow: 1; }
.tech-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tech-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.74rem;
  font-weight: 600;
  padding: 5px 11px;
  border-radius: 999px;
  background: rgba(0, 212, 255, 0.08);
  color: var(--accent);
  border: 1px solid rgba(0, 212, 255, 0.2);
}

/* ===== Education ===== */
.edu__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 50px;
}
.edu-item {
  display: flex;
  gap: 18px;
  padding: 22px 0;
  border-bottom: 1px solid var(--border);
}
.edu-item:last-child { border-bottom: none; }
.edu-item__icon {
  flex-shrink: 0;
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}
.edu-item__icon svg { width: 21px; height: 21px; }
.edu-item__degree { font-weight: 700; font-size: 1.02rem; margin-bottom: 4px; }
.edu-item__institution { color: var(--text-dim); font-size: 0.9rem; margin-bottom: 4px; }
.edu-item__years {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  color: var(--text-faint);
}

.edu__languages h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 24px;
}
.lang-item { margin-bottom: 22px; }
.lang-item__top {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 0.92rem;
}
.lang-item__name { font-weight: 600; }
.lang-item__level { color: var(--text-faint); font-size: 0.82rem; }
.lang-bar {
  height: 6px;
  border-radius: 999px;
  background: var(--surface-2);
  overflow: hidden;
}
.lang-bar__fill {
  height: 100%;
  border-radius: 999px;
  background: var(--accent-grad);
  width: 0%;
  transition: width 1.2s ease;
}

/* ===== Certificates ===== */
.certs__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.cert-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform 0.25s, border-color 0.25s;
}
.cert-card:hover { transform: translateY(-5px); border-color: var(--accent); }
.cert-card__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--accent-grad);
  color: #06121a;
  margin-bottom: 16px;
}
.cert-card__badge svg { width: 22px; height: 22px; }
.cert-card h3 { font-size: 1.02rem; font-weight: 700; margin-bottom: 8px; line-height: 1.35; }
.cert-card__meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-faint);
  font-family: 'JetBrains Mono', monospace;
  margin-bottom: 14px;
  flex-wrap: wrap;
  gap: 6px;
}
.cert-card__meta .issuer { color: var(--accent-2); font-weight: 600; }
.cert-card p { font-size: 0.88rem; color: var(--text-dim); }

/* Cert card with image thumbnail */
.cert-card__thumb {
  position: relative;
  width: 100%;
  height: 160px;
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 18px;
  cursor: pointer;
}
.cert-card__thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.35s;
}
.cert-card__thumb:hover img { transform: scale(1.04); }
.cert-card__thumb-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,212,255,0.18);
  display: flex; align-items: center; justify-content: center;
  opacity: 0;
  transition: opacity 0.25s;
}
.cert-card__thumb-overlay svg { width: 36px; height: 36px; color: #fff; }
.cert-card__thumb:hover .cert-card__thumb-overlay { opacity: 1; }

/* Lightbox */
#certLightbox {
  display: none;
  position: fixed; inset: 0; z-index: 9999;
}
#certLightbox.active { display: flex; align-items: center; justify-content: center; }
.lightbox__backdrop {
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(6px);
}
.lightbox__wrap {
  position: relative; z-index: 1;
  max-width: 92vw; max-height: 90vh;
}
.lightbox__img {
  display: block;
  max-width: 100%; max-height: 88vh;
  border-radius: 12px;
  box-shadow: 0 24px 80px rgba(0,0,0,0.6);
}
.lightbox__close {
  position: absolute; top: -14px; right: -14px;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: #06121a;
  border: none; cursor: pointer;
  font-size: 1rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.2s;
}
.lightbox__close:hover { background: var(--accent-2); color: #fff; }

/* ===== Resume section ===== */
.resume-section {
  background: linear-gradient(135deg, rgba(0,212,255,0.06), rgba(124,92,255,0.06));
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.resume-section__inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 50px;
  align-items: center;
}
.resume-section__text {
  color: v