/* ============================================================
   Brady — Personal Academic Homepage
   Aesthetic: Refined minimalism with editorial warmth
   Typography: Newsreader (serif display) + DM Sans (clean body)
   ============================================================ */

:root {
  --bg:          #faf9f6;
  --bg-warm:     #f5f3ee;
  --ink:         #1a1a1a;
  --ink-soft:    #4a4a4a;
  --ink-muted:   #8a8a8a;
  --accent:      #2d5a8e;
  --accent-hover:#1d3f66;
  --accent-light:#e8eff6;
  --border:      #e2dfd8;
  --card-bg:     #ffffff;
  --card-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.03);
  --card-hover:  0 2px 8px rgba(0,0,0,0.06), 0 8px 24px rgba(0,0,0,0.05);
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3.5rem;
  --space-2xl: 6rem;
  --max-w: 880px;
  --nav-h: 64px;
  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
  font-size: 18.5px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  font-weight: 400;
  overflow-x: hidden;
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px;
}

a { color: var(--accent); text-decoration: none; transition: color 0.2s var(--ease); }
a:hover { color: var(--accent-hover); }
::selection { background: var(--accent); color: #fff; }
img { max-width: 100%; display: block; }

/* ---- Navigation ---- */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
  background: rgba(250, 249, 246, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
}
.nav-brand {
  font-family: 'Newsreader', Georgia, serif;
  font-size: 30.5px; font-weight: 500;
  color: var(--ink); letter-spacing: -0.01em;
  white-space: nowrap;
}
.nav-brand:hover { color: var(--accent); }
.nav-links { display: flex; gap: 2rem; }
.nav-links a {
  font-size: 0.875rem; font-weight: 500;
  color: var(--ink-soft); letter-spacing: 0.02em;
  position: relative; padding-bottom: 2px;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -2px; left: 0;
  width: 0; height: 1.5px; background: var(--accent);
  transition: width 0.3s var(--ease);
}
.nav-links a:hover, .nav-links a.active { color: var(--ink); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.nav-toggle {
  display: none; background: none; border: none;
  cursor: pointer; width: 24px; height: 20px; position: relative;
}
.nav-toggle span {
  display: block; width: 100%; height: 2px;
  background: var(--ink); position: absolute; left: 0;
  transition: 0.3s var(--ease);
}
.nav-toggle span:first-child { top: 4px; }
.nav-toggle span:last-child { bottom: 4px; }

/* ---- Main Layout ---- */
main {
  max-width: var(--max-w); margin: 0 auto;
  padding: calc(var(--nav-h) + var(--space-xl)) clamp(1.5rem, 4vw, 2rem) var(--space-2xl);
}
.page {
  max-width: var(--max-w); margin: 0 auto;
  padding: calc(var(--nav-h) + var(--space-xl)) clamp(1.5rem, 4vw, 2rem) var(--space-2xl);
}

/* ---- Hero ---- */
.hero { margin-bottom: var(--space-2xl); }
.hero-content { display: flex; align-items: flex-start; gap: var(--space-xl); }
.hero-text { flex: 1; }
.hero-greeting {
  font-size: 0.875rem; font-weight: 500; color: var(--ink-muted);
  letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: var(--space-xs);
}
.hero-name {
  font-family: 'Newsreader', Georgia, serif;
  font-size: clamp(2.43rem, 5.84vw, 3.41rem); font-weight: 400;
  letter-spacing: -0.03em; line-height: 1.1; color: var(--ink);
  margin-bottom: var(--space-sm);
}
.hero-tagline {
  font-size: 1.05rem; color: var(--ink-soft); font-weight: 300;
  letter-spacing: 0.02em; margin-bottom: var(--space-lg);
}
.hero-bio {
  font-size: 0.95rem; color: var(--ink-soft); line-height: 1.75;
  margin-bottom: var(--space-md);
}

/* Social Icons */
.social-icons { display: flex; gap: 1rem; margin-top: var(--space-lg); }
.social-icons a {
  display: flex; align-items: center; justify-content: center;
  width: 2.375rem; height: 2.375rem; border-radius: 8px;
  color: var(--ink-soft); background: var(--bg-warm);
  transition: all 0.25s var(--ease);
}
.social-icons a:hover {
  color: var(--accent); background: var(--accent-light);
  transform: translateY(-2px);
}
.social-icons svg { width: 1.125rem; height: 1.125rem; }

/* Portrait */
.hero-portrait { flex-shrink: 0; }
.portrait-frame {
  width: 11.25rem; height: 13.75rem; border-radius: 12px;
  overflow: hidden; border: 1px solid var(--border); background: var(--bg-warm);
}
.portrait-frame img { width: 100%; height: 100%; object-fit: cover; }
.portrait-placeholder {
  width: 100%; height: 100%; display: flex; align-items: center;
  justify-content: center; font-size: 0.85rem; color: var(--ink-muted);
  text-align: center; font-style: italic;
}

/* ---- Sections ---- */
.section { margin-bottom: var(--space-2xl); }
.section-title {
  font-family: 'Newsreader', Georgia, serif;
  font-size: 1.35rem; font-weight: 400; color: var(--ink);
  letter-spacing: -0.01em; margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm); border-bottom: 1px solid var(--border);
}

/* ---- News ---- */
.news-list { display: flex; flex-direction: column; gap: var(--space-sm); }
.news-item { display: flex; gap: var(--space-lg); padding: var(--space-sm) 0; font-size: 0.9rem; line-height: 1.6; }
.news-date { flex-shrink: 0; width: 80px; color: var(--ink-muted); font-weight: 500; font-size: 0.8rem; letter-spacing: 0.02em; }
.news-text { color: var(--ink-soft); }

/* ---- Publications ---- */
.pub-list { display: flex; flex-direction: column; gap: var(--space-lg); }
.pub-item {
  padding-left: var(--space-md); border-left: 2px solid var(--border);
  transition: border-color 0.3s var(--ease);
}
.pub-item:hover { border-left-color: var(--accent); }
.pub-title {
  font-family: 'Newsreader', Georgia, serif;
  font-size: 1.05rem; font-weight: 500; color: var(--ink);
  line-height: 1.4; margin-bottom: 0.2rem;
}
.pub-authors { font-size: 0.85rem; color: var(--ink-soft); margin-bottom: 0.15rem; }
.pub-venue { font-size: 0.8rem; color: var(--ink-muted); }
.pub-venue a, .pub-links a { font-weight: 500; }
.pub-links { font-size: 0.8rem; color: var(--ink-muted); margin-top: 0.2rem; }
.pub-abstract {
  font-size: 0.83rem; color: var(--ink-muted); margin-top: 0.35rem;
  font-style: italic; line-height: 1.6;
}
.year-label {
  font-family: 'Newsreader', Georgia, serif;
  font-size: 1.15rem; font-weight: 400; color: var(--ink-muted);
  margin-bottom: var(--space-md); letter-spacing: 0.02em;
}

.see-more {
  display: inline-block; margin-top: var(--space-lg);
  font-size: 0.85rem; font-weight: 500; letter-spacing: 0.02em;
}

/* ---- Project Cards (Home) ---- */
.project-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--space-md); }
.project-card {
  display: block; padding: var(--space-lg); background: var(--card-bg);
  border: 1px solid var(--border); border-radius: 10px;
  transition: all 0.3s var(--ease); color: var(--ink); text-decoration: none;
}
.project-card:hover {
  border-color: var(--accent); box-shadow: var(--card-hover);
  transform: translateY(-2px); color: var(--ink);
}
.project-card .project-tag {
  font-size: 0.7rem; font-weight: 600; color: var(--accent);
  text-transform: uppercase; letter-spacing: 0.08em;
}
.project-card h3 {
  font-family: 'Newsreader', Georgia, serif;
  font-size: 1.1rem; font-weight: 500; margin: 0.4rem 0 0.5rem;
}
.project-card p { font-size: 0.85rem; color: var(--ink-soft); line-height: 1.6; margin-bottom: 0.75rem; }
.project-tech { font-size: 0.75rem; color: var(--ink-muted); font-weight: 500; }

/* ---- Project Cards (Full Page) ---- */
.project-grid-full { display: grid; grid-template-columns: 1fr; gap: var(--space-lg); }
.project-card-full {
  padding: var(--space-lg); background: var(--card-bg);
  border: 1px solid var(--border); border-radius: 10px;
  transition: all 0.3s var(--ease);
}
.project-card-full:hover { border-color: var(--accent); box-shadow: var(--card-hover); }
.project-card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-sm); }
.project-card-full h3 {
  font-family: 'Newsreader', Georgia, serif;
  font-size: 1.2rem; font-weight: 500; margin-bottom: var(--space-sm);
}
.project-desc { font-size: 0.9rem; color: var(--ink-soft); line-height: 1.7; margin-bottom: var(--space-md); }
.project-tech-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: var(--space-md); }
.project-tech-tags span {
  font-size: 0.72rem; font-weight: 500; padding: 0.2rem 0.6rem;
  background: var(--bg-warm); border-radius: 4px; color: var(--ink-soft); letter-spacing: 0.02em;
}
.project-links { display: flex; gap: var(--space-md); font-size: 0.8rem; font-weight: 500; }
.project-gh-link { color: var(--ink-muted); display: flex; align-items: center; }
.project-gh-link:hover { color: var(--accent); }
.project-gh-link svg { width: 20px; height: 20px; }

/* ---- Blog List ---- */
.blog-list { display: flex; flex-direction: column; }
.blog-item {
  display: block; padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--border);
  color: var(--ink); text-decoration: none; transition: all 0.2s var(--ease);
}
.blog-item:first-child { padding-top: 0; }
.blog-item:hover h3 { color: var(--accent); }
.blog-meta { display: flex; align-items: center; gap: var(--space-md); margin-bottom: var(--space-sm); }
.blog-meta time { font-size: 0.78rem; color: var(--ink-muted); font-weight: 500; }
.blog-tag {
  font-size: 0.68rem; font-weight: 600; color: var(--accent);
  background: var(--accent-light); padding: 0.15rem 0.5rem;
  border-radius: 3px; text-transform: uppercase; letter-spacing: 0.06em;
}
.blog-item h3 {
  font-family: 'Newsreader', Georgia, serif;
  font-size: 1.15rem; font-weight: 500; margin-bottom: 0.3rem;
  transition: color 0.2s var(--ease); line-height: 1.35;
}
.blog-item p { font-size: 0.88rem; color: var(--ink-soft); line-height: 1.65; }
.blog-read-more { display: inline-block; margin-top: 0.4rem; font-size: 0.8rem; font-weight: 500; color: var(--accent); }

/* ---- Others / Misc ---- */
.misc-list { display: flex; flex-direction: column; gap: var(--space-sm); }
.misc-item { display: flex; gap: var(--space-lg); padding: var(--space-sm) 0; }
.misc-date { flex-shrink: 0; width: 80px; font-size: 0.8rem; font-weight: 500; color: var(--ink-muted); }
.misc-title { font-size: 0.92rem; color: var(--ink); font-weight: 400; }
.misc-detail { font-size: 0.8rem; color: var(--ink-muted); margin-top: 0.15rem; }
.reading-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: var(--space-md); }
.reading-item { padding: var(--space-md); background: var(--card-bg); border: 1px solid var(--border); border-radius: 8px; }
.reading-title {
  font-family: 'Newsreader', Georgia, serif;
  font-size: 0.95rem; font-weight: 500; color: var(--ink); margin-bottom: 0.15rem;
}
.reading-author { font-size: 0.8rem; color: var(--ink-muted); }

/* ---- Page Header ---- */
.page-header { margin-bottom: var(--space-xl); }
.page-title {
  font-family: 'Newsreader', Georgia, serif;
  font-size: clamp(2rem, 5vw, 2.8rem); font-weight: 400;
  letter-spacing: -0.02em; line-height: 1.15; margin-bottom: var(--space-md);
}
.page-desc { font-size: 0.95rem; color: var(--ink-soft); line-height: 1.7; max-width: 600px; }
.inline-link { font-weight: 500; text-decoration: underline; text-underline-offset: 3px; }

/* ---- Footer ---- */
.footer {
  max-width: var(--max-w); margin: 0 auto;
  padding: var(--space-xl) clamp(1.5rem, 4vw, 2rem) var(--space-lg);
  border-top: 1px solid var(--border); text-align: center;
  font-size: 0.78rem; color: var(--ink-muted);
}
.footer-sub { margin-top: 0.3rem; }
.footer a { color: var(--ink-muted); text-decoration: underline; text-underline-offset: 2px; }
.footer a:hover { color: var(--accent); }

/* ---- Globe ---- */
.globe-wrapper {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  background: #e8e8e8;
}
#globe-container { width: 100%; height: 480px; display: block; }
.globe-hint {
  position: absolute; bottom: var(--space-md); right: var(--space-md);
  font-size: 0.7rem; color: rgba(80,80,80,0.5);
  pointer-events: none; letter-spacing: 0.04em;
}

/* ---- Animations ---- */
.fade-in {
  opacity: 0; transform: translateY(16px);
  animation: fadeUp 0.6s var(--ease) forwards;
}
.d1 { animation-delay: 0.08s; }
.d2 { animation-delay: 0.16s; }
.d3 { animation-delay: 0.24s; }
.d4 { animation-delay: 0.32s; }
.d5 { animation-delay: 0.4s; }
@keyframes fadeUp { to { opacity: 1; transform: translateY(0); } }

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column; position: fixed;
    top: var(--nav-h); left: 0; right: 0; background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: var(--space-lg) clamp(1.5rem, 4vw, 3rem);
    gap: var(--space-md); z-index: 999;
  }
  .nav-toggle { display: block; }
  .hero-content { flex-direction: column-reverse; gap: var(--space-lg); }
  .portrait-frame { width: 140px; height: 170px; }
  .news-item { flex-direction: column; gap: 0.15rem; }
  .news-date { width: auto; }
  .misc-item { flex-direction: column; gap: 0.15rem; }
  .misc-date { width: auto; }
  .project-grid { grid-template-columns: 1fr; }
  .reading-grid { grid-template-columns: 1fr 1fr; }
  #globe-container { height: 320px; }
}
@media (max-width: 480px) {
  .reading-grid { grid-template-columns: 1fr; }
}