/*
 * Clean Academic Styles for David Contreras-Loya
 * Aesthetic direction: Modern minimalism with refined typography
 */

/* ============================================
   TYPOGRAPHY - Clean and professional
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Libre+Baskerville:ital,wght@0,400;0,700;1,400&display=swap');

:root {
  /* Monochrome palette */
  --primary-black: #1a1a1a;
  --primary-gray: #4a4a4a;
  --light-gray: #e5e5e5;
  --lighter-gray: #f8f8f8;
  --white: #ffffff;
  
  /* Subtle accent */
  --accent-blue: #2563eb;
  --accent-blue-light: #3b82f6;
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, system-ui, sans-serif;
  --font-serif: 'Libre Baskerville', 'Georgia', serif;
}

/* ============================================
   BASE STYLES
   ============================================ */

body {
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.6;
  color: var(--primary-gray);
  background: var(--white);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   HEADER & NAVIGATION - Minimal
   ============================================ */

#quarto-header {
  background: var(--white);
  border-bottom: 1px solid var(--light-gray);
  box-shadow: none;
}

.navbar-brand,
.navbar-title {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
  color: var(--primary-black) !important;
}

.navbar-nav .nav-link {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--primary-gray) !important;
  transition: color 0.2s ease;
}

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

.dropdown-menu {
  background: var(--white);
  border: 1px solid var(--light-gray);
  border-radius: 4px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.dropdown-item {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--primary-gray);
  transition: all 0.2s ease;
}

.dropdown-item:hover {
  background: var(--lighter-gray);
  color: var(--accent-blue);
}

.dropdown-header {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.75rem;
  color: var(--primary-black);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ============================================
   HERO SECTION - Clean and spacious
   ============================================ */

.quarto-about-trestles {
  background: var(--white);
  padding: 4rem 0;
}

.about-entity img {
  border-radius: 4px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.about-entity img:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

.quarto-title-block h1 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 3rem;
  line-height: 1.2;
  color: var(--primary-black);
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.quarto-title-block .subtitle {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--primary-gray);
  font-weight: 400;
}

/* ============================================
   SOCIAL LINKS - Minimal pill design
   ============================================ */

.about-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.about-link {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--primary-gray) !important;
  text-decoration: none;
  padding: 0.5rem 1rem;
  border: 1px solid var(--light-gray);
  border-radius: 4px;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--white);
}

.about-link:hover {
  background: var(--primary-black);
  color: var(--white) !important;
  border-color: var(--primary-black);
  transform: translateY(-1px);
}

.about-link i,
.about-link .ai {
  font-size: 1rem;
}

/* ============================================
   MAIN CONTENT - Readable typography
   ============================================ */

#hero-heading {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--primary-gray);
  max-width: 75ch;
}

#hero-heading p {
  margin-bottom: 1.5rem;
}

#hero-heading a {
  color: var(--accent-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

#hero-heading a:hover {
  border-bottom-color: var(--accent-blue);
}

/* ============================================
   FOOTER - Minimal
   ============================================ */

.footer {
  background: var(--lighter-gray);
  border-top: 1px solid var(--light-gray);
  color: var(--primary-gray);
  padding: 2.5rem 0;
  margin-top: 4rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
}

.nav-footer a {
  color: var(--primary-gray);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.footer-items .nav-link i {
  font-size: 1.2rem;
  color: var(--primary-gray);
  transition: color 0.2s ease;
}

.footer-items .nav-link:hover i {
  color: var(--accent-blue);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 991px) {
  .quarto-title-block h1 {
    font-size: 2.5rem;
  }
  
  #hero-heading {
    font-size: 1rem;
  }
  
  .about-entity img {
    width: 60% !important;
  }
}

@media (max-width: 768px) {
  .quarto-title-block h1 {
    font-size: 2rem;
  }
  
  .about-links {
    justify-content: center;
  }
  
  body {
    font-size: 16px;
  }
}

/* ============================================
   SUBTLE ANIMATIONS - Optional
   ============================================ */

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.about-entity,
.quarto-title-block,
#hero-heading {
  animation: fadeIn 0.6s ease-out;
}

/* ============================================
   CLEAN ACCENTS
   ============================================ */

/* Subtle hover states for navbar icons */
.navbar-nav .nav-item.compact .nav-link i {
  font-size: 1.2rem;
  color: var(--primary-gray);
  transition: color 0.2s ease;
}

.navbar-nav .nav-item.compact .nav-link:hover i {
  color: var(--accent-blue);
}