/* Personal Website Stylesheet - Aneesh Pappu */

/* ==================== CSS Variables ==================== */
:root {
  --color-bg: #faf9f6;
  --color-text: #1a1a1a;
  --color-text-secondary: #555555;
  --color-accent: #8b5a2b;
  --color-accent-hover: #6d4522;
  --color-border: #e0ddd8;
  --font-heading: 'Cormorant Garamond', Georgia, serif;
  --font-body: 'Work Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --max-width: 900px;
  --spacing-unit: 1rem;
}

/* ==================== Reset & Base ==================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ==================== Typography ==================== */
h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.2;
}

h1 {
  font-size: 3.5rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
  color: var(--color-text);
}

p {
  margin-bottom: 1rem;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* ==================== Layout ==================== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  padding: 4rem 0;
}

section + section {
  border-top: 1px solid var(--color-border);
}

/* ==================== Header ==================== */
header {
  padding: 3rem 0 2rem;
  text-align: center;
}

.site-title {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  font-weight: 400;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.site-tagline {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  font-weight: 300;
  letter-spacing: 0.05em;
  margin-bottom: 2rem;
}

/* ==================== Navigation ==================== */
nav {
  margin-top: 1.5rem;
}

nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 2rem;
}

nav a {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  font-weight: 400;
  text-transform: lowercase;
  letter-spacing: 0.03em;
}

nav a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

/* ==================== About Section ==================== */
.about-content {
  display: flex;
  gap: 3rem;
  align-items: flex-start;
}

.headshot {
  flex-shrink: 0;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--color-border);
}

.bio {
  flex: 1;
}

.bio p {
  font-size: 1rem;
  color: var(--color-text);
}

/* Social Icons */
.social-links {
  display: flex;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.social-links a {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

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

.social-links svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

/* ==================== News Section ==================== */
.news-list {
  list-style: none;
}

.news-item {
  display: flex;
  gap: 1.5rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-border);
}

.news-item:last-child {
  border-bottom: none;
}

.news-date {
  flex-shrink: 0;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  font-weight: 500;
  min-width: 80px;
}

.news-text {
  color: var(--color-text);
}

/* ==================== Publications Section ==================== */
.pub-subsection {
  margin-bottom: 2.5rem;
}

.pub-subsection:last-child {
  margin-bottom: 0;
}

.pub-subsection h3 {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
  font-weight: 500;
  font-family: var(--font-body);
}

.pub-list {
  list-style: none;
}

.pub-item {
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-border);
}

.pub-item:last-child {
  border-bottom: none;
}

.pub-title {
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.pub-title a {
  color: var(--color-text);
}

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

.pub-authors {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin-bottom: 0.25rem;
}

.pub-authors strong {
  color: var(--color-text);
  font-weight: 600;
}

.pub-venue {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  font-style: italic;
}

/* ==================== Footer ==================== */
footer {
  padding: 3rem 0;
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.footer-social {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.footer-social a {
  color: var(--color-text-secondary);
}

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

.footer-social svg {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

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

/* ==================== Responsive ==================== */
@media (max-width: 768px) {
  .site-title {
    font-size: 2.5rem;
  }

  nav ul {
    gap: 1.25rem;
  }

  .about-content {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .headshot {
    width: 300px;
    height: 300px;
  }

  .social-links {
    justify-content: center;
  }

  .news-item {
    flex-direction: column;
    gap: 0.25rem;
  }

  section {
    padding: 3rem 0;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1.25rem;
  }

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

  h2 {
    font-size: 1.5rem;
  }

  nav ul {
    flex-wrap: wrap;
    gap: 1rem;
  }
}