:root {
  --bg: #0b0d10;
  --text: #e9edf4;
  --muted: #b6c2d9;
  --card: #121822;
  --stroke: rgba(255, 255, 255, 0.08);
  --border: rgba(255, 255, 255, 0.12);
  --accent: #7cd1ff;
  --accent-strong: #5cb8ff;
  --surface: #0f141d;
  --shadow: 0 10px 50px rgba(0, 0, 0, 0.35);
}

body.light {
  --bg: #f8fafc;
  --text: #0f172a;
  --muted: #4b5563;
  --card: #ffffff;
  --stroke: rgba(15, 23, 42, 0.08);
  --border: rgba(15, 23, 42, 0.12);
  --accent: #2563eb;
  --accent-strong: #1d4ed8;
  --surface: #eef2ff;
  --shadow: 0 20px 60px rgba(15, 23, 42, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: "Space Grotesk", system-ui, -apple-system, sans-serif;
  background: radial-gradient(circle at 20% 20%, rgba(124, 209, 255, 0.06), transparent 25%),
    radial-gradient(circle at 80% 0%, rgba(92, 184, 255, 0.06), transparent 20%),
    var(--bg);
  color: var(--text);
  transition: background 0.4s ease, color 0.4s ease;
}

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

a:hover {
  color: var(--accent);
}

.top-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  background: rgba(11, 13, 16, 0.75);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--stroke);
}

body.light .top-nav {
  background: rgba(248, 250, 252, 0.85);
}

.brand {
  font-weight: 700;
  letter-spacing: 1px;
}

.nav-links {
  display: flex;
  gap: 20px;
  font-size: 15px;
}

.nav-links a {
  padding: 8px 10px;
  border-radius: 8px;
  transition: color 0.2s ease, background 0.2s ease;
}

.nav-links a:hover {
  background: var(--stroke);
  color: var(--accent);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 3px;
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--stroke);
  border-radius: 10px;
  padding: 8px 10px;
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

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

.nav-toggle__bar {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle.is-open .nav-toggle__bar:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
}

.nav-toggle.is-open .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open .nav-toggle__bar:nth-child(3) {
  transform: translateY(-4px) rotate(-45deg);
}

#theme-toggle {
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--stroke);
  border-radius: 10px;
  padding: 8px 10px;
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

#theme-toggle:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 20px 80px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.hero {
  padding: 42px 28px;
  border: 1px solid var(--stroke);
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(124, 209, 255, 0.08), transparent 45%), var(--card);
  box-shadow: var(--shadow);
}

.hero__content h1 {
  margin: 10px 0 12px;
  font-size: clamp(32px, 5vw, 44px);
}

.hero__content .lead {
  color: var(--muted);
  max-width: 720px;
  line-height: 1.6;
}

.hero__badge {
  display: flex;
  gap: 10px;
  margin-top: 18px;
  flex-wrap: wrap;
}

.badge {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--stroke);
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  font-size: 13px;
}

.btn {
  display: inline-block;
  padding: 12px 18px;
  border-radius: 12px;
  border: 1px solid var(--stroke);
  color: var(--text);
  font-weight: 600;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.btn.primary {
  background: var(--accent);
  color: #0b0d10;
  border-color: transparent;
}

.btn.ghost {
  background: transparent;
}

.btn:hover {
  transform: translateY(-2px);
  color: #0b0d10;
  background: var(--accent);
}

.hero__actions {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.panel {
  border: 1px solid var(--stroke);
  border-radius: 18px;
  background: var(--card);
  padding: 24px;
  box-shadow: var(--shadow);
}

.panel__header h2 {
  margin: 4px 0 0;
}

.eyebrow {
  letter-spacing: 0.6px;
  text-transform: uppercase;
  color: var(--muted);
  font-size: 12px;
  margin: 0;
}

.panel__content {
  margin-top: 14px;
  color: var(--muted);
  line-height: 1.6;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.profile-card {
  display: grid;
  gap: 14px;
  align-content: start;
}

.profile-pic {
  width: 160px;
  height: 160px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(124, 209, 255, 0.25), rgba(92, 184, 255, 0.15)),
    url("../Profile_photo/Profile_pic.jpg") center/120% auto no-repeat;
  border: 1px solid var(--stroke);
  box-shadow: var(--shadow);
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.chip {
  padding: 8px 12px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--stroke);
  font-size: 13px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
}

.stat {
  padding: 12px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--stroke);
}

.stat__label {
  color: var(--muted);
  font-size: 13px;
}

.stat__value {
  font-size: 18px;
  font-weight: 700;
}

.timeline {
  display: grid;
  gap: 14px;
  position: relative;
}

.timeline:before {
  content: "";
  position: absolute;
  left: 10px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--stroke);
}

.timeline__item {
  display: grid;
  grid-template-columns: 24px 1fr;
  align-items: start;
  gap: 12px;
}

.timeline__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg);
  margin-top: 4px;
}

.timeline__label {
  margin: 0;
  font-weight: 600;
}

.timeline__meta {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.filter-btn {
  padding: 8px 12px;
  border: 1px solid var(--stroke);
  background: transparent;
  color: var(--text);
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.filter-btn.active {
  background: var(--accent);
  color: #0b0d10;
  border-color: transparent;
}

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

.card {
  border: 1px solid var(--stroke);
  border-radius: 14px;
  padding: 16px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0));
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 200px;
}

.card__title {
  margin: 0;
  font-size: 18px;
}

.card__desc {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
  flex: 1;
}

.card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.meta-chip {
  padding: 6px 10px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--stroke);
  font-size: 12px;
}

.card__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.link-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid var(--stroke);
  color: var(--text);
  font-weight: 600;
  background: rgba(255, 255, 255, 0.03);
  transition: background 0.2s ease, transform 0.2s ease;
}

.link-pill:hover {
  background: var(--accent);
  color: #0b0d10;
  transform: translateY(-2px);
}

.contact {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.contact__item {
  padding: 12px;
  border: 1px solid var(--stroke);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
}

.contact__label {
  color: var(--muted);
  font-size: 13px;
}

.footer {
  max-width: 1100px;
  margin: 10px auto 40px;
  padding: 16px 20px;
  color: var(--muted);
  text-align: center;
}

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

.lead {
  margin: 0;
}

.contact-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.contact-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.contact-chip .icon {
  display: inline-flex;
  width: 22px;
  height: 22px;
}

.contact-chip svg {
  width: 100%;
  height: 100%;
  fill: currentColor;
}

.contact-chip:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
  border-color: var(--primary);
  color: var(--primary);
}

@media (max-width: 720px) {
  .top-nav {
    flex-wrap: nowrap;
    gap: 12px;
    padding: 12px 16px;
    position: sticky;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .nav-actions {
    margin-left: auto;
  }
  .nav-links {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background: rgba(11, 13, 16, 0.95);
    border-bottom: 1px solid var(--stroke);
    box-shadow: var(--shadow);
    flex-direction: column;
    gap: 8px;
    padding: 12px 16px 16px;
  }
  body.light .nav-links {
    background: rgba(248, 250, 252, 0.95);
  }
  .nav-links.open {
    display: flex;
  }
  .nav-links a {
    padding: 12px 10px;
    border-radius: 10px;
    width: 100%;
  }
  .filters {
    justify-content: flex-start;
  }
  .hero {
    padding: 28px 18px;
  }
  .panel {
    padding: 18px;
  }
  .profile-pic {
    width: 140px;
    height: 140px;
    background-size: 130% auto;
  }
  .card {
    padding: 14px;
  }
  .btn {
    width: 100%;
    text-align: center;
  }
  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }
  main {
    padding: 24px 14px 64px;
  }
}