/* ═══════════════════════════════════════════════════
   PRAJWAL SATHYANARAYANA — Modern Portfolio
   Fonts:   Inter · Cormorant Garamond
   Palette: Navy · Indigo accent · Clean white/slate
════════════════════════════════════════════════════ */

:root {
  /* Backgrounds */
  --white:       #ffffff;
  --bg:          #f8fafc;
  --bg-alt:      #f1f5f9;

  /* Dark surfaces */
  --dark:        #0f172a;
  --dark-2:      #1e293b;
  --dark-3:      #334155;

  /* Text — all WCAG AA+ on their respective backgrounds */
  --text:        #0f172a;   /* 19.6:1 on white */
  --text-2:      #1e293b;   /* 15.9:1 on white */
  --text-3:      #475569;   /*  5.9:1 on white ✓ */
  --text-inv:    #f1f5f9;   /* on dark bg */
  --text-inv-2:  #94a3b8;   /*  4.7:1 on dark ✓ */

  /* Accent — indigo */
  --accent:      #6366f1;
  --accent-dark: #4f46e5;
  --accent-dim:  #818cf8;
  --accent-bg:   #eef2ff;
  --accent-border: rgba(99,102,241,0.25);

  /* UI */
  --border:      #e2e8f0;
  --border-2:    #cbd5e1;
  --success:     #059669;
  --success-bg:  #ecfdf5;
  --shadow-sm:   0 1px 3px rgba(15,23,42,0.08), 0 1px 2px rgba(15,23,42,0.06);
  --shadow:      0 4px 12px rgba(15,23,42,0.08), 0 2px 6px rgba(15,23,42,0.05);
  --shadow-lg:   0 10px 30px rgba(15,23,42,0.12), 0 4px 12px rgba(15,23,42,0.07);

  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --radius:     8px;
  --radius-lg:  14px;
  --nav-h:      66px;
  --transition: 0.22s ease;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--white);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.7;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.paper-texture { display: none; }

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 2.5rem;
  position: relative;
  z-index: 1;
}

/* ══════════════ NAVIGATION ══════════════ */
#navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 2.5rem;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
#navbar.scrolled {
  box-shadow: var(--shadow);
}
.nav-logo { cursor: pointer; }
.nav-wordmark {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--text);
  letter-spacing: 0.01em;
}
.nav-wordmark em {
  font-style: italic;
  color: var(--accent);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.nav-link {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--text-3);
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius);
  transition: color var(--transition), background var(--transition);
}
.nav-link:hover {
  color: var(--accent);
  background: var(--accent-bg);
}
.nav-link.active {
  color: var(--accent);
  background: var(--accent-bg);
}
.nav-resume {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--accent);
  background: var(--accent-bg);
  border: 1.5px solid var(--accent-border);
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius);
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.nav-resume:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--white);
}
.nav-cta {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--white);
  background: var(--accent);
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius);
  transition: background var(--transition), box-shadow var(--transition);
}
.nav-cta:hover {
  background: var(--accent-dark);
  box-shadow: 0 4px 12px rgba(99,102,241,0.35);
}
.mob-resume {
  color: var(--accent) !important;
  font-weight: 600;
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  border-radius: var(--radius);
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  z-index: 99;
  padding: 1.25rem 1.5rem;
  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
  transition: all var(--transition);
  box-shadow: var(--shadow);
}
.mobile-menu.open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}
.mob-link {
  display: block;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-2);
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
  transition: color var(--transition);
}
.mob-link:hover { color: var(--accent); }

/* ══════════════ HERO ══════════════ */
#hero {
  background: var(--dark);
  padding-top: calc(var(--nav-h) + 5rem);
  padding-bottom: 5rem;
  position: relative;
  overflow: hidden;
}
#hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99,102,241,0.15) 0%, transparent 70%);
  pointer-events: none;
}
#hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(99,102,241,0.4), transparent);
}
.hero-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 2.5rem;
  position: relative;
  z-index: 1;
}
.hero-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 3.5rem;
}
.issue-label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-dim);
}
.issue-rule {
  flex: 1;
  height: 1px;
  background: rgba(99,102,241,0.3);
}
.issue-tag {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-inv-2);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 5rem;
  align-items: end;
}
.hero-name {
  font-family: var(--font-display);
  font-size: clamp(3.75rem, 9vw, 7.5rem);
  font-weight: 300;
  line-height: 0.9;
  letter-spacing: -0.02em;
  color: var(--text-inv);
  margin-bottom: 2rem;
}
.name-first { display: block; }
.name-last {
  display: block;
  font-style: italic;
  color: var(--accent-dim);
}
.hero-deck {
  font-size: 1.125rem;
  font-weight: 400;
  color: var(--text-inv-2);
  line-height: 1.7;
  margin-bottom: 1rem;
  max-width: 540px;
}
.hero-byline {
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-inv-2);
  margin-bottom: 2.25rem;
  min-height: 1.5rem;
}
.cursor {
  color: var(--accent-dim);
  animation: blink 1s infinite;
}
@keyframes blink {
  0%,50%  { opacity: 1; }
  51%,100%{ opacity: 0; }
}
.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.25rem;
  align-items: center;
}
.btn-primary {
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  background: var(--accent);
  color: var(--white);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
}
.btn-primary:hover {
  background: var(--accent-dark);
  box-shadow: 0 6px 20px rgba(99,102,241,0.4);
  transform: translateY(-1px);
}
.btn-ghost {
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--text-inv);
  border: 1.5px solid rgba(241,245,249,0.25);
  padding: 0.72rem 1.75rem;
  border-radius: var(--radius);
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}
.btn-ghost:hover {
  border-color: var(--accent-dim);
  color: var(--accent-dim);
  background: rgba(99,102,241,0.08);
}
.hero-socials {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.social-link {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-inv-2);
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius);
  transition: color var(--transition), background var(--transition);
}
.social-link:hover {
  color: var(--accent-dim);
  background: rgba(99,102,241,0.1);
}
.social-sep { color: rgba(148,163,184,0.4); }

/* Hero aside stats */
.hero-aside {
  border-top: 2px solid var(--accent);
}
.aside-stat {
  padding: 1.1rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}
.aside-stat:last-child { border-bottom: none; }
.aside-num {
  display: block;
  font-family: var(--font-display);
  font-size: 3.25rem;
  font-weight: 300;
  color: var(--text-inv);
  line-height: 1;
  letter-spacing: -0.02em;
}
.aside-num sup {
  font-size: 1.5rem;
  font-weight: 400;
  vertical-align: super;
  color: var(--accent-dim);
}
.aside-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text-inv-2);
  margin-top: 0.3rem;
}
.aside-rule {}

.hero-footer-rule {
  max-width: 1120px;
  margin: 0 auto;
  height: 0;
}

/* ══════════════ SECTIONS ══════════════ */
section { padding: 6rem 0; position: relative; z-index: 1; }
.section-tinted { background: var(--bg); }

.section-header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 3.5rem;
  padding-bottom: 1.25rem;
  border-bottom: 2px solid var(--border);
}
.section-num {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-bg);
  padding: 0.3rem 0.65rem;
  border-radius: 4px;
}
.section-rule { flex: 0; width: 0; }
.section-title {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 400;
  font-style: italic;
  letter-spacing: -0.01em;
  color: var(--text);
}

/* ══════════════ ABOUT ══════════════ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 5rem;
  align-items: start;
}
.about-lede {
  font-family: var(--font-display);
  font-size: 2.75rem;
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--text);
  margin-bottom: 1.75rem;
}
.about-lede em { font-style: italic; color: var(--accent); }
.about-text p {
  font-size: 1.0625rem;
  color: var(--text-2);
  line-height: 1.85;
  margin-bottom: 1.25rem;
}
.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 2rem;
}
.tag-item {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--accent);
  background: var(--accent-bg);
  border: 1px solid var(--accent-border);
  padding: 0.35rem 0.85rem;
  border-radius: 20px;
}

/* About card */
.about-card {
  position: sticky;
  top: calc(var(--nav-h) + 2rem);
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  border: 1px solid var(--border);
}
.card-masthead {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white);
  background: var(--dark-2);
  padding: 0.75rem 1.25rem;
}
.card-body {}
.card-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border);
  gap: 1rem;
}
.card-row:last-child { border-bottom: none; }
.card-label {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  flex-shrink: 0;
}
.card-val {
  font-size: 0.9rem;
  color: var(--text-2);
  font-weight: 500;
  text-align: right;
}
.card-val a { color: var(--accent); }
.card-val a:hover { text-decoration: underline; }
.card-val.available {
  color: var(--success);
  font-weight: 600;
  background: var(--success-bg);
  padding: 0.2rem 0.65rem;
  border-radius: 20px;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
}
.card-cta {
  display: block;
  text-align: center;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  background: var(--accent);
  color: var(--white);
  padding: 1rem;
  transition: background var(--transition);
}
.card-cta:hover { background: var(--accent-dark); }

/* ══════════════ EXPERIENCE ══════════════ */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding-left: 2.5rem;
  position: relative;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 3rem;
  width: 2px;
  background: var(--border-2);
}
.tl-item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 2.5rem;
  padding: 0 0 3rem 0;
  position: relative;
}
.tl-item::before {
  content: '';
  position: absolute;
  left: -2.5rem;
  top: 5px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--white);
  border: 2.5px solid var(--accent);
  transform: translateX(-50%);
  z-index: 1;
}
.tl-meta {
  padding-top: 0.25rem;
  padding-left: 1.5rem;
}
.tl-date {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-3);
  margin-bottom: 0.5rem;
  letter-spacing: 0.02em;
}
.tl-category {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-bg);
  border: 1px solid var(--accent-border);
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
}
.tl-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.tl-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.tl-card-top { margin-bottom: 1.1rem; }
.tl-role {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.35rem;
  letter-spacing: -0.01em;
  font-family: var(--font-body);
}
.tl-badge {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-bg);
  border: 1px solid var(--accent-border);
  padding: 0.15rem 0.55rem;
  border-radius: 4px;
  vertical-align: middle;
  margin-left: 0.5rem;
  font-style: normal;
}
.tl-org {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-3);
}
.tl-bullets { margin-bottom: 1.25rem; }
.tl-bullets li {
  font-size: 0.9625rem;
  color: var(--text-2);
  line-height: 1.75;
  padding-left: 1.25rem;
  position: relative;
  margin-bottom: 0.6rem;
}
.tl-bullets li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.75rem;
  top: 0.22rem;
}
.tl-bullets strong { color: var(--accent-dark); font-weight: 600; }
.tl-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.tl-tags span {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-3);
  background: var(--bg-alt);
  border: 1px solid var(--border-2);
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
}

/* ══════════════ SKILLS ══════════════ */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
.skill-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}
.skill-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
  border-color: var(--accent-border);
}
.skill-kicker {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.6rem;
  display: block;
}
.skill-card h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 400;
  font-style: italic;
  color: var(--text);
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1.5px solid var(--border);
}
.skill-card ul li {
  font-size: 0.9375rem;
  font-weight: 400;
  color: var(--text-2);
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 0.65rem;
}
.skill-card ul li:last-child { border-bottom: none; }
.skill-card ul li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* ══════════════ PROJECTS ══════════════ */
.projects-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.project-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 0;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}
.project-item:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
  border-color: var(--accent-border);
}
.project-item:first-child,
.project-item:last-child { border-top: none; }
.project-num {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 300;
  color: var(--accent-border);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 1rem;
}
.project-body h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.85rem;
  letter-spacing: -0.01em;
  line-height: 1.4;
}
.project-body > p {
  font-size: 0.9375rem;
  color: var(--text-2);
  line-height: 1.75;
  margin-bottom: 1rem;
}
.project-points { margin-bottom: 1.25rem; }
.project-points li {
  font-size: 0.875rem;
  color: var(--text-3);
  padding: 0.3rem 0 0.3rem 1.25rem;
  position: relative;
  border-bottom: 1px solid var(--border);
}
.project-points li:last-child { border-bottom: none; }
.project-points li::before {
  content: '✦';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.6rem;
  top: 0.45rem;
}
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: auto;
  padding-top: 1rem;
}
.project-tags span {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--accent);
  background: var(--accent-bg);
  border: 1px solid var(--accent-border);
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
}

/* ══════════════ PUBLICATIONS ══════════════ */
.pub-profiles {
  display: flex;
  align-items: stretch;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}
.pub-profile-link {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1rem 1.5rem;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.pub-profile-link:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow);
}
.pub-profile-link.orcid .ppl-label { color: #2e7d32; }
.pub-profile-link.scholar .ppl-label { color: var(--accent-dark); }
.ppl-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.ppl-id {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-3);
}
.pub-metrics {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  background: var(--dark);
  padding: 1rem 1.75rem;
  border-radius: var(--radius);
}
.pm-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
}
.pm-val {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 300;
  color: var(--text-inv);
  line-height: 1;
}
.pm-label {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-inv-2);
}
.pm-sep {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: rgba(148,163,184,0.3);
  font-weight: 300;
  align-self: center;
}
.pub-list { display: flex; flex-direction: column; gap: 0; }
.pub-entry {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 2rem;
  padding: 2.25rem 0;
  border-bottom: 1px solid var(--border);
}
.pub-entry:first-child { border-top: 1px solid var(--border); }
.pub-left {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding-top: 0.25rem;
}
.pub-badge {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--dark);
  color: var(--white);
  padding: 0.4rem 0.75rem;
  border-radius: 4px;
  text-align: center;
  width: 100%;
}
.pub-cited {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  text-align: center;
  background: var(--accent-bg);
  border: 1px solid var(--accent-border);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  width: 100%;
}
.pub-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.5rem;
  line-height: 1.4;
  letter-spacing: -0.01em;
}
.pub-authors {
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--accent-dark);
  margin-bottom: 0.3rem;
}
.pub-authors em { font-style: normal; font-weight: 700; }
.pub-venue {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-3);
  margin-bottom: 0.85rem;
  line-height: 1.5;
}
.pub-abstract {
  font-size: 0.9375rem;
  color: var(--text-2);
  line-height: 1.75;
  margin-bottom: 1rem;
}
.pub-footer {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.pub-link {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent);
  border-bottom: 1.5px solid var(--accent-border);
  padding-bottom: 1px;
  transition: color var(--transition), border-color var(--transition);
}
.pub-link:hover {
  color: var(--accent-dark);
  border-color: var(--accent-dark);
}
.pub-kw {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-3);
  background: var(--bg-alt);
  border: 1px solid var(--border-2);
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
}

/* ══════════════ EDUCATION ══════════════ */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
}
.edu-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}
.edu-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.edu-top-rule {
  height: 3px;
  background: var(--accent);
  margin: -2rem -2rem 1.75rem;
  transition: background var(--transition);
}
.edu-card:hover .edu-top-rule { background: var(--accent-dark); }
.edu-period {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-3);
  margin-bottom: 0.85rem;
}
.edu-card h3 {
  font-family: var(--font-display);
  font-size: 1.875rem;
  font-weight: 300;
  color: var(--text);
  letter-spacing: -0.01em;
  margin-bottom: 0.35rem;
}
.edu-major {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-style: italic;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.edu-school {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-2);
  margin-bottom: 0.2rem;
}
.edu-location {
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--text-3);
  margin-bottom: 1.25rem;
}
.edu-status {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.3rem 0.85rem;
  border-radius: 20px;
}
.edu-status.current {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid rgba(5,150,105,0.2);
}
.edu-status.done {
  background: var(--accent-bg);
  color: var(--accent-dark);
  border: 1px solid var(--accent-border);
}

/* ══════════════ FOOTER ══════════════ */
#footer {
  background: var(--dark);
  padding: 3.5rem 0 2rem;
  position: relative;
  z-index: 1;
}
.footer-rule {
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  max-width: 1120px;
  margin: 0 auto 3rem;
}
.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.footer-brand {}
.footer-name {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 300;
  font-style: italic;
  color: var(--text-inv);
  letter-spacing: -0.01em;
  margin-bottom: 0.35rem;
}
.footer-tagline {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--text-inv-2);
}
.footer-links {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.footer-links a {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-inv-2);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius);
  transition: color var(--transition), background var(--transition);
}
.footer-links a:hover {
  color: var(--text-inv);
  background: rgba(255,255,255,0.07);
}
.footer-copy {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: rgba(148,163,184,0.5);
  border-top: 1px solid rgba(255,255,255,0.05);
  padding-top: 1.5rem;
}

/* ══════════════ SCROLL REVEAL ══════════════ */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ══════════════ RESPONSIVE ══════════════ */
@media (max-width: 1024px) {
  .projects-list { grid-template-columns: 1fr; }
  .project-item { flex-direction: row; gap: 1.5rem; align-items: flex-start; }
  .project-num { min-width: 3rem; }
}
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 3rem; }
  .hero-aside {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0;
    border-top: 1px solid rgba(99,102,241,0.3);
  }
  .aside-stat {
    flex: 1;
    min-width: 120px;
    padding: 1rem;
    border-right: 1px solid rgba(255,255,255,0.07);
    border-bottom: none;
  }
  .aside-stat:last-child { border-right: none; }
  .about-grid { grid-template-columns: 1fr; }
  .about-card { position: relative; top: 0; }
  .tl-item { grid-template-columns: 1fr; gap: 0.75rem; }
  .tl-meta { display: flex; gap: 1rem; align-items: center; }
  .skills-grid { grid-template-columns: 1fr; }
  .edu-grid { grid-template-columns: 1fr; gap: 1.25rem; }
  .pub-entry { grid-template-columns: 80px 1fr; gap: 1.5rem; }
}
@media (max-width: 768px) {
  #navbar { padding: 0 1.25rem; }
  .nav-links, .nav-cta, .nav-resume { display: none; }
  .hamburger { display: flex; }
  .mobile-menu { display: block; }
  .hero-inner { padding: 0 1.25rem; }
  .hero-name { font-size: clamp(3rem, 12vw, 4.5rem); }
  section { padding: 4rem 0; }
  .container { padding: 0 1.25rem; }
  .pub-metrics { margin-left: 0; width: 100%; justify-content: center; }
  .pub-profiles { flex-direction: column; align-items: stretch; }
  .footer-rule { margin: 0 1.25rem 2.5rem; }
  .footer-inner { padding: 0 1.25rem; }
}
@media (max-width: 580px) {
  .hero-name { font-size: 2.75rem; }
  .aside-stat { min-width: 100%; border-right: none; border-bottom: 1px solid rgba(255,255,255,0.07); }
  .pub-entry { grid-template-columns: 1fr; }
  .pub-left { flex-direction: row; }
  .projects-list { grid-template-columns: 1fr; }
  .project-item { flex-direction: column; }
  .timeline { padding-left: 0; }
  .timeline::before { display: none; }
  .tl-item::before { display: none; }
}

/* ══════════════ MASKED CONTACT ══════════════ */
.masked-contact {
  cursor: pointer;
  color: var(--accent);
  border-bottom: 1.5px dashed var(--accent-border);
  transition: color var(--transition), border-color var(--transition);
  user-select: none;
  font-style: italic;
}
.masked-contact:hover {
  color: var(--accent-dark);
  border-color: var(--accent-dark);
}
.masked-contact.revealed {
  color: var(--text-2);
  border-bottom: none;
  font-style: normal;
  user-select: text;
}
.footer-links .masked-contact {
  color: var(--text-inv-2);
  border-bottom-color: rgba(148,163,184,0.3);
}
.footer-links .masked-contact:hover {
  color: var(--accent-dim);
  border-bottom-color: var(--accent-dim);
}
.footer-links .masked-contact.revealed {
  border-bottom: none;
  color: var(--text-inv-2);
}