/* ============================================
   Rohit Pillai - Academic Website Styles
   Inspired by silviacanelon.com
   Colors: Slate (#2d3047) + Amber (#d4a03a)
   ============================================ */

/* ===== CSS Variables ===== */
:root {
  --slate: #2d3047;
  --slate-light: #4a4d64;
  --amber: #d4a03a;
  --amber-light: #e8b94d;
  --amber-dark: #b8892f;
  --bg-light: #fafafa;
  --text-dark: #333333;
}

/* ===== Global Typography ===== */
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 1.05rem;
  line-height: 1.7;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* ===== Navbar - Editorial Style ===== */
.navbar {
  padding: 1.2rem 0;
  background: transparent !important;
  border-bottom: none;
}

.navbar-brand, .navbar-title {
  font-family: "Fraunces", serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--slate) !important;
  letter-spacing: -0.02em;
}

.navbar-nav .nav-link {
  text-transform: uppercase;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--amber) !important;
  padding: 0.5rem 1rem !important;
  margin: 0 0.1rem;
  position: relative;
  transition: color 0.2s ease;
}

.navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 1rem;
  right: 1rem;
  height: 2px;
  background: var(--amber);
  transform: scaleX(0);
  transition: transform 0.25s ease;
}

.navbar-nav .nav-link:hover::after {
  transform: scaleX(1);
}

.navbar-nav .nav-link:hover {
  color: var(--amber-dark) !important;
}

/* Navbar icons */
.navbar .bi, .navbar .fa {
  color: var(--amber);
  font-size: 1.2rem;
}

/* ===== Headings ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: "Fraunces", serif;
  font-weight: 400;
  color: var(--slate);
  letter-spacing: -0.02em;
}

h1 { font-size: 2.8rem; line-height: 1.2; }
h2 {
  font-size: 1.8rem;
  margin-top: 3rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 3px solid var(--amber);
  display: inline-block;
}
h3 { font-size: 1.4rem; }

/* ===== Links ===== */
a {
  color: var(--amber);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--amber-dark);
}

/* Content links with underline effect */
.content a, main p a, main li a {
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.content a:hover, main p a:hover, main li a:hover {
  border-bottom-color: var(--amber);
}

/* ===== Cards ===== */
.card {
  border: none;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

/* ===== Buttons ===== */
.btn-primary, .btn-secondary {
  border-radius: 30px;
  padding: 0.6rem 1.5rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: all 0.25s ease;
}

.btn-primary {
  background: var(--amber);
  border-color: var(--amber);
}

.btn-primary:hover {
  background: var(--amber-dark);
  border-color: var(--amber-dark);
  transform: translateY(-2px);
}

/* ===== Footer ===== */
.nav-footer {
  margin-top: 4rem;
  padding: 2rem 0;
  border-top: 1px solid rgba(45, 48, 71, 0.1);
}

.nav-footer a {
  color: var(--amber);
}

.nav-footer a:hover {
  color: var(--amber-light);
}

/* ===== Publications Page ===== */
.publications h3 {
  color: var(--slate);
  font-size: 1.3rem;
  margin-top: 2rem;
}

/* ===== Blog Listing ===== */
.quarto-listing {
  margin-top: 2rem;
}

.quarto-listing .listing-item {
  padding: 1.5rem;
  margin-bottom: 1rem;
  border-radius: 12px;
  background: white;
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.04);
  transition: all 0.2s ease;
}

.quarto-listing .listing-item:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

/* ===== Dark Mode ===== */
.quarto-dark {
  --slate: #c9cad4;
  --bg-dark: #1a1a2e;
}

.quarto-dark body {
  background-color: var(--bg-dark);
}

.quarto-dark .navbar-brand,
.quarto-dark .navbar-title {
  color: var(--slate) !important;
}

.quarto-dark h1, .quarto-dark h2,
.quarto-dark h3, .quarto-dark h4, .quarto-dark h5, .quarto-dark h6 {
  font-family: "Fraunces", serif;
  font-weight: 400;
  color: #e8e8ec;
}

.quarto-dark h2 {
  border-bottom-color: var(--amber);
}

.quarto-dark .card {
  background: #252538;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.quarto-dark .nav-footer {
  border-top-color: rgba(212, 160, 58, 0.2);
}

.quarto-dark .quarto-listing .listing-item {
  background: #252538;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }

  .navbar-nav .nav-link {
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    padding: 0.4rem 0.6rem !important;
  }
}

/* ===== Smooth scrolling ===== */
html {
  scroll-behavior: smooth;
}

/* ===== Selection color ===== */
::selection {
  background: rgba(212, 160, 58, 0.3);
}