/* ===== THEME TOKENS (Light by default) ===== */
:root {
  --bg: #ffffff;
  --text: #222222;
  --muted: #555555;
  --subtle: #666666;
 
  --card: #ffffff;
  --border: rgba(0,0,0,0.08);
  --line: #dddddd;
  --shadow: 0 8px 24px rgba(0,0,0,0.08);
 
  --icon-bg: #f0f0f0;
  --icon-fg: #666666;
  --icon-bg-hover: #e8e8e8;
  --icon-fg-hover: #222222;
 
  /* Navbar + shader */
  --nav-bg: rgba(255,255,255,0.85);
  --nav-fg: #222222;
  --nav-border: rgba(0,0,0,0.06);
  --nav-shadow: 0 4px 16px rgba(0,0,0,0.06);
  --nav-shade-from: rgba(255,255,255,0);
  --nav-shade-to: rgba(255,255,255,1);
 
  /* Brand accents */
  --accent-gold: #b8860b;
  --accent-gold-hover: #9c720a;
}
 
/* Dark mode overrides */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111213;
    --text: #e6e6e6;
    --muted: #c0c0c0;
    --subtle: #d0d0d0;
 
    --card: #2a2a2a;
    --border: rgba(255,255,255,0.10);
    --line: #444444;
    --shadow: 0 8px 24px rgba(0,0,0,0.35);
 
    --icon-bg: #3a3a3a;
    --icon-fg: #b0b0b0;
    --icon-bg-hover: #4a4a4a;
    --icon-fg-hover: #e0e0e0;
 
    --nav-bg: rgba(20,20,22,0.7);
    --nav-fg: #e6e6e6;
    --nav-border: rgba(255,255,255,0.08);
    --nav-shadow: 0 6px 22px rgba(0,0,0,0.45);
    --nav-shade-from: rgba(17,18,19,0);
    --nav-shade-to: rgba(17,18,19,1);
  }
}
 
body {
  background: var(--bg);
  color: var(--text);
}
 
/* ===== INDEX PAGE SPECIFIC STYLES ===== */
 
/* ===== MAIN CONTENT ===== */
#content {
  padding-top: 40px;
  max-width: 1100px;
  margin: 0 auto;
  padding-left: 2rem;
  padding-right: 2rem;
  text-align: center;
}
 
/* ===== HERO SECTION ===== */
.hero-section {
  margin-bottom: 0.5rem;
  padding-top: 0.1rem;
}
 
.hero-title {
  font-size: 3rem;
  font-weight: 300;
  margin-bottom: 1rem;
  color: var(--text);
  line-height: 1.2;
}
 
.hero-subtitle {
  font-size: 1rem;
  font-weight: 400;
  color: var(--subtle);
  margin-bottom: 3rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}
 
/* ===== PHOTO SLIDER ===== */
.slider {
  position: center;
  width: 100%;
  max-width: 2000px;
  height: 550px;
  margin: 2rem auto 3rem auto;
  padding: 1rem;
  overflow: hidden;
  border-radius: 2px;
  box-shadow: var(--shadow);
}
 
.slides {
  display: inline-flex;
  align-items: center;
  min-width: 200%;
  gap: 3px;
  width: max-content;
  height: 100%;
  animation: marquee 60s linear infinite;
  will-change: transform;
}
 
.slides img {
  height: 100%;
  width: auto;
  flex: 0 0 auto;
  object-fit: cover;
  user-select: none;
  pointer-events: none;
  border-radius: 6px;
}
 
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
 
@media (prefers-reduced-motion: reduce) {
  .slides { animation: none; }
}
 
.ieee-gradient {
  display: inline-block;
  background: linear-gradient(90deg, #00629B, #78BE20);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  font-weight: 700;
  border-bottom: 2px solid #00629B;
  padding-bottom: 0px;
}
.ieee-gradient:hover {
  border-bottom-color: #78BE20;
}
@media (prefers-color-scheme: dark){
  .ieee-gradient {
    background-image: linear-gradient(90deg,#57A7D1,#8CD64F);
    border-bottom-color: #57A7D1;
  }
}
 
.cde-link {
  color: var(--accent-gold);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}
.cde-link:hover {
  color: var(--accent-gold-hover);
}
 
/* ===== ABOUT SECTION ===== */
.about-section {
  margin: 3rem 0;
  text-align: left;
}
 
.about-content {
  background: var(--card);
  padding: 1rem;
  border-radius: 12px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
 
.about-content h2 {
  font-size: 1.7rem;
  margin-bottom: 1rem;
  color: var(--text);
  font-weight: 500;
  text-align: left;
}
 
.about-content h3 {
  font-size: 1.2rem;
  margin-bottom: 1.5rem;
  color: var(--subtle);
  font-weight: 500;
  text-align: left;
}
 
.about-content h4 {
  font-size: 1.4rem;
  margin: 2rem 0 1rem 0;
  color: var(--text);
  font-weight: 600;
  text-align: left;
  border-bottom: 2px solid var(--line);
  padding-bottom: 0.5rem;
}
 
.about-content p {
  font-size: 1.2rem;
  line-height: 1.5;
  margin-bottom: 1rem;
  color: var(--muted);
  font-weight: 400;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}
 
.about-content p:last-child { margin-bottom: 0; }
 
.about-content .intro-section,
.about-content .current-work,
.about-content .background,
.about-content .interests,
.about-content .personal,
.about-content .closing {
  margin-bottom: 2rem;
}
 
.about-content ul {
  margin: 1rem 0;
  padding-left: 1.5rem;
}
 
.about-content li {
  margin-bottom: 0.5rem;
  color: var(--text);
  line-height: 1.6;
}
 
/* ===== TIMELINE STYLES ===== */
.timeline {
  position: relative;
  margin: 2rem 0;
  padding-left: 2rem;
}
 
.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--line);
}
 
.timeline-item {
  position: relative;
  margin-bottom: 1rem;
  padding-left: 1rem;
}
 
.timeline-item::before {
  content: '';
  position: absolute;
  left: -1.5rem;
  top: 0.5rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid var(--card);
  z-index: 2;
}
 
.timeline-item.uiuc::before {
  background: linear-gradient(135deg, #ff6b35, #004d99);
}
 
.timeline-item.gatech::before {
  background: linear-gradient(135deg, #b8860b, #001f5b);
}
 
.timeline-card {
  background: var(--card);
  padding: 1rem;
  border-radius: 6px;
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  max-width: 550px;
}
 
.timeline-card:hover {
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}
 
.timeline-card.uiuc {
  background: linear-gradient(135deg, #ff6b35, #004d99);
  color: white;
}
.timeline-card.gatech {
  background: linear-gradient(135deg, #b8860b, #001f5b);
  color: white;
}
 
.timeline-year {
  font-size: 0.8rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 0.4rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}
 
.timeline-title {
  font-size: 1.4rem;
  font-weight: 600;
  color: white;
  margin-bottom: 0.4rem;
}
 
.timeline-subtitle {
  font-size: 1.1rem;
  color: white;
  margin-bottom: 0.4rem;
}
 
.timeline-description {
  font-size: 1rem;
  color: white;
  line-height: 1.5;
}
 
/* ===== SOCIAL SECTION ===== */
.social-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  margin-top: 2rem;
  padding: 2rem 1rem;
}
 
.social-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--text);
}
 
.icons {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.5rem;
  padding: 0;
  margin: 0;
  list-style: none;
}
 
.icons li { display: center; }
 
.icons li a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background: var(--icon-bg);
  color: var(--icon-fg);
  border-radius: 8px;
  text-decoration: none;
  font-size: 1.2rem;
  transition: all 0.2s ease;
}
 
.icons li a:hover {
  background: var(--icon-bg-hover);
  color: var(--icon-fg-hover);
  transform: translateY(-2px);
}
 
/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
  #content {
    padding-left: 1rem;
    padding-right: 1rem;
    padding-top: 800px;
  }
 
  .slider {
    height: 350px;
    max-width: 100%;
  }
 
  .hero-title { font-size: 2.5rem; }
 
  .about-content { padding: 1.5rem; }
 
  .about-content p { text-align: center; }
 
  .icons { gap: 1rem; }
 
  .icons li a {
    width: 45px;
    height: 45px;
    font-size: 1.1rem;
  }
}
 
/* ===== NAVBAR WITH SHADER ===== */
.navbar {
  position: sticky;
  top: 0;
  inset-inline: 0;
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .6rem 1rem;
  background: var(--nav-bg);
  color: var(--nav-fg);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--nav-border);
  box-shadow: var(--nav-shadow);
  z-index: 100;
}
.navbar a {
  color: var(--nav-fg);
  text-decoration: none;
}
.navbar a:hover { text-decoration: underline; }
 
.navbar::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -16px; height: 16px;
  pointer-events: none;
  background: linear-gradient(
    to bottom,
    var(--nav-shade-from),
    var(--nav-shade-to)
  );
}
 
@media (prefers-reduced-transparency: reduce) {
  .navbar {
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    background: var(--bg);
  }
  .navbar::after { display: none; }
}