/* Base styles */
:root {
  --bg: #0b1220; /* dark navy */
  --bg-2: #0f172a; /* slightly lighter */
  --text: #e5e7eb;
  --muted: #94a3b8;
  --primary: #22d3ee; /* cyan */
  --accent: #a78bfa; /* purple */
  --card: #111827;
  --chip: #0b2530;
  --border: rgba(255, 255, 255, 0.08);
}

:root.light {
  --bg: #ffffff;
  --bg-2: #f8fafc;
  --text: #0f172a;
  --muted: #475569;
  --primary: #0ea5e9;
  --accent: #7c3aed;
  --card: #ffffff;
  --chip: #e2f3f9;
  --border: rgba(2, 6, 23, 0.1);
}

* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
}
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu,
    Cantarell, Noto Sans, sans-serif;
  color: var(--text);
  background: radial-gradient(
      1000px 500px at -10% -10%,
      rgba(34, 211, 238, 0.08),
      transparent 50%
    ),
    radial-gradient(
      1000px 600px at 110% 0%,
      rgba(167, 139, 250, 0.08),
      transparent 60%
    ),
    var(--bg);
}

h1,
h2,
h3 {
  font-family: Poppins, Inter, sans-serif;
  margin: 0 0 0.6rem 0;
}
h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
}
h2 {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  font-weight: 700;
}
h3 {
  font-size: 1.1rem;
  font-weight: 700;
}
p {
  line-height: 1.7;
  color: var(--text);
}
a {
  color: var(--primary);
  text-decoration: none;
}

.container {
  width: min(1100px, 90%);
  margin-inline: auto;
}
.section {
  padding: 72px 0;
  scroll-margin-top: 100px;
}

/* Header & Nav */
.site-header {
  position: static;
  background: none;
}
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: linear-gradient(
    180deg,
    rgba(2, 6, 23, 0.85),
    rgba(2, 6, 23, 0.35)
  );
  backdrop-filter: saturate(1.2) blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 16px 0 12px 0;
  gap: 12px;
}
.brand {
  font-weight: 800;
  letter-spacing: 0.3px;
  color: var(--text);
}
.brand span {
  color: var(--primary);
}
.nav-links {
  list-style: none;
  display: flex;
  gap: 12px;
  margin: 0;
  padding: 0;
}
.nav-links a {
  color: var(--muted);
  font-weight: 500;
  padding: 8px 10px;
  border-radius: 10px;
}
.nav-links a:hover {
  background: var(--chip);
  color: var(--text);
}
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 10px;
  border-radius: 10px;
}
.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 10px;
  border-radius: 10px;
}
.nav-social {
  display: flex;
  gap: 10px;
}
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  border: 1px solid var(--border);
  color: var(--text);
  background: var(--chip);
}
.icon-btn:hover {
  background: var(--card);
  color: var(--primary);
}

@media (max-width: 1024px) {
  .nav-toggle {
    display: inline-flex;
  }
  .nav-links {
    position: absolute;
    right: 5%;
    top: 64px;
    background: var(--card);
    border: 1px solid var(--border);
    padding: 10px;
    border-radius: 14px;
    flex-direction: column;
    display: none;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  }
  .nav-links.open {
    display: flex;
  }
}

/* Nav single-line layout */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: nowrap;
}
.brand {
  flex: 0 0 auto;
}
.nav-links {
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: nowrap;
  gap: 12px;
}
.nav-links li {
  white-space: nowrap;
}
.nav-actions {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
}
.theme-toggle {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Prevent nav bar scrollbars */
.nav {
  overflow: visible;
}
.nav-links {
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.nav-links::-webkit-scrollbar {
  width: 0;
  height: 0;
}

@media (max-width: 860px) {
  .nav-toggle {
    display: inline-flex;
  }
  .nav {
    gap: 10px;
  }
  .nav-actions {
    margin-left: auto;
  }
  .nav-links {
    position: absolute;
    right: 5%;
    top: 64px;
    background: var(--card);
    border: 1px solid var(--border);
    padding: 10px;
    border-radius: 14px;
    flex-direction: column;
    display: none;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  }
  .nav-links.open {
    display: flex;
  }
}

/* Hero */
.hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 36px;
  align-items: center;
  padding: 40px 0 20px;
}
.hero .subtitle {
  color: var(--muted);
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--chip);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 12px;
  border-radius: 999px;
  margin: 8px 8px 0 0;
  font-size: 0.95rem;
}
.hero-visual {
  position: relative;
  height: 220px;
}
.orb {
  position: absolute;
  filter: blur(20px);
  opacity: 0.8;
}
.orb-a {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #22d3ee, transparent 60%);
  left: 10%;
  top: 10%;
}
.orb-b {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle at 60% 40%, #a78bfa, transparent 60%);
  right: 0;
  top: 20%;
}
.orb-c {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 50%, #22d3ee, transparent 60%);
  left: 35%;
  bottom: -10%;
}

@media (max-width: 860px) {
  .hero {
    grid-template-columns: 1fr;
  }
  .hero-visual {
    order: -1;
    height: 160px;
  }
}

/* Timeline */
.timeline {
  position: relative;
  margin-left: 12px;
  padding-left: 24px;
  border-left: 2px dashed var(--border);
}
.timeline-item {
  position: relative;
  margin: 24px 0;
  padding-left: 12px;
}
.timeline-dot {
  position: absolute;
  left: -7px;
  top: 6px;
  width: 12px;
  height: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.15);
}
.item-header {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: baseline;
}
.item-header .at {
  color: var(--primary);
}
.item-header .meta {
  color: var(--muted);
  font-size: 0.95rem;
}
.timeline-content ul {
  margin: 8px 0 0 0;
  padding-left: 18px;
}
.timeline-content li {
  margin: 6px 0;
}

/* Cards / Grid */
.grid {
  display: grid;
  gap: 18px;
}
.projects-grid {
  grid-template-columns: repeat(3, 1fr);
}
@media (max-width: 1000px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 640px) {
  .projects-grid {
    grid-template-columns: 1fr;
  }
}

.card {
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.02),
    rgba(255, 255, 255, 0)
  );
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}
.card-body {
  padding: 18px 18px 0 18px;
}
.card-footer {
  display: flex;
  justify-content: flex-end;
  padding: 12px 18px 18px 18px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #0b1220;
  padding: 10px 14px;
  border-radius: 12px;
  font-weight: 700;
}
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--chip);
  border: 1px solid var(--border);
  padding: 6px 10px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.9rem;
}

/* Education */
.edu-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.edu-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  background: var(--card);
  border: 1px solid var(--border);
  padding: 12px;
  border-radius: 12px;
}
.edu-list i {
  color: var(--accent);
  margin-top: 3px;
}

/* Skills */
.skills {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.skill-block {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 16px;
  border-radius: 14px;
}
.pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  margin: 8px 0 0 0;
  padding: 0;
}
.pill-list li {
  background: var(--chip);
  border: 1px solid var(--border);
  padding: 6px 10px;
  border-radius: 999px;
}
.icon-list {
  list-style: none;
  margin: 8px 0 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}
.icon-list li {
  display: flex;
  align-items: center;
  gap: 10px;
}
@media (max-width: 900px) {
  .skills {
    grid-template-columns: 1fr;
  }
}

/* Hobbies */
.hobby-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.hobby-list li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--chip);
  border: 1px solid var(--border);
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--muted);
}

/* Footer */
.site-footer {
  padding: 36px 0;
  border-top: 1px solid var(--border);
  margin-top: 40px;
  background: linear-gradient(0deg, rgba(2, 6, 23, 0.5), rgba(2, 6, 23, 0));
}
.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.footer-content .socials {
  display: flex;
  gap: 12px;
}
.footer-content .socials a {
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 8px;
  border-radius: 10px;
}
.footer-content .socials a:hover {
  background: var(--chip);
  color: var(--text);
}

/* Utilities */
.section h2 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

/* Slightly increase nav bar padding */
.nav {
  padding: 16px 0;
}

/* Add a little padding to the main hero title */
.hero h1 {
  padding-top: 8px;
}

/* Light mode: make nav text lighter for readability over dark nav background */
.light .brand {
  color: #f1f5f9;
}
.light .nav-links a {
  color: #e2e8f0;
}
.light .nav-links a:hover {
  color: #ffffff;
}
.light .icon-btn,
.light .theme-toggle {
  color: #e2e8f0;
  border-color: rgba(255, 255, 255, 0.2);
}

/* Adaptive nav background in light mode for contrast */
.light .nav {
  background: linear-gradient(
    180deg,
    rgba(15, 23, 42, 0.85),
    rgba(15, 23, 42, 0.35)
  );
}
.light .nav-links a:hover {
  background: rgba(255, 255, 255, 0.06);
}
.light .chip {
  background: #e9f5fb;
  border-color: rgba(2, 6, 23, 0.1);
  color: #0f172a;
}

/* Light mode: darker social icons and toggle for better theme contrast */
.light .nav-social .icon-btn,
.light .theme-toggle {
  background: #ffffff;
  color: #0f172a;
  border-color: rgba(2, 6, 23, 0.12);
}
.light .nav-social .icon-btn:hover {
  background: #f1f5f9;
  color: #0f172a;
}

/* Move the main title a bit down */
.hero h1 {
  margin-top: 12px;
}