@import url("https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800&family=Source+Serif+4:opsz,wght@8..60,400;8..60,600&display=swap");

:root {
  --bg: #f4f8fc;
  --ink: #13233a;
  --muted: #5b697d;
  --accent: #0d7a88;
  --accent-2: #0f5e92;
  --line: #d8e4ef;
  --card: #ffffff;
  --soft: #e8f4f5;
  --sidebar-width: 320px;
  --shadow: 0 20px 40px rgba(16, 35, 58, 0.12);
}

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Manrope", "Segoe UI", "Trebuchet MS", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 8%, rgba(13, 122, 136, 0.16), transparent 32%),
    radial-gradient(circle at 90% 4%, rgba(15, 94, 146, 0.14), transparent 28%),
    var(--bg);
  line-height: 1.65;
}

a {
  color: var(--accent-2);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.site-shell {
  min-height: 100vh;
}

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--sidebar-width);
  height: 100vh;
  padding: 28px 22px;
  background:
    linear-gradient(150deg, #102539, #0f324f 65%, #0a4255);
  color: #f3f8ff;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.sidebar-inner {
  display: flex;
  flex-direction: column;
  gap: 12px;
  height: 100%;
}

.sidebar-avatar {
  width: 132px;
  height: 132px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid rgba(255, 255, 255, 0.24);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3);
}

.sidebar-name {
  margin: 2px 0 0;
  font-size: 1.38rem;
  line-height: 1.2;
}

.sidebar-role {
  margin: 0;
  color: rgba(233, 244, 255, 0.9);
  font-size: 0.92rem;
}

.sidebar-location {
  margin: 0;
  color: rgba(233, 244, 255, 0.78);
  font-size: 0.88rem;
}

.sidebar-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.sidebar-links a {
  text-decoration: none;
  color: #ecf7ff;
  border: 1px solid rgba(232, 248, 255, 0.3);
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 0.82rem;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.sidebar-links a:hover {
  background: rgba(236, 247, 255, 0.15);
  border-color: rgba(236, 247, 255, 0.65);
}

.cv-button {
  margin-top: 6px;
  display: inline-block;
  width: fit-content;
  text-decoration: none;
  font-weight: 700;
  color: #08253e;
  background: linear-gradient(120deg, #9fdbde, #bee6f4);
  border-radius: 8px;
  padding: 8px 12px;
}

.sidebar-nav {
  margin-top: 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sidebar-divider {
  width: 100%;
  border: 0;
  border-top: 1px solid rgba(232, 248, 255, 0.2);
  margin: 10px 0 2px;
}

.nav-link {
  color: rgba(231, 244, 255, 0.9);
  text-decoration: none;
  padding: 8px 10px;
  border-radius: 8px;
  transition: background 0.2s ease, transform 0.15s ease;
}

.nav-link:hover {
  background: rgba(233, 246, 255, 0.12);
  transform: translateX(2px);
}

.nav-link.active {
  background: rgba(183, 226, 247, 0.22);
  color: #f7fcff;
  font-weight: 700;
}

.main-content {
  margin-left: calc(var(--sidebar-width) + 28px);
  padding: 34px 30px 44px;
  max-width: 1120px;
}

.content-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 34px;
}

.page-enter {
  animation: rise-in 0.55s ease both;
}

@keyframes rise-in {
  from {
    transform: translateY(16px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.page-head h1 {
  margin: 0 0 16px;
  font-size: clamp(1.75rem, 3vw, 2.4rem);
  letter-spacing: -0.02em;
}

.post-meta {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.9rem;
}

.prose p,
.prose li {
  color: #1e2f45;
}

.prose p {
  margin-top: 0;
  margin-bottom: 1rem;
}

.prose h2,
.prose h3,
.prose h4 {
  color: #0f253a;
  margin-top: 1.8rem;
  margin-bottom: 0.65rem;
  letter-spacing: -0.01em;
}

.prose h2 {
  font-size: 1.4rem;
  border-bottom: 1px solid var(--line);
  padding-bottom: 6px;
}

.prose h3 {
  font-size: 1.12rem;
}

.prose ul,
.prose ol {
  padding-left: 1.2rem;
}

.lede {
  font-size: 1.05rem;
}

.intro-note {
  border-left: 4px solid var(--accent);
  padding: 12px 14px;
  background: #f1f8fb;
  border-radius: 0 8px 8px 0;
}

.section-grid {
  display: grid;
  gap: 14px;
}

.columns-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.columns-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-card,
.stack-card,
.teaching-card,
.year-block {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fbfdff;
  padding: 15px 16px;
  transition: transform 0.18s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.feature-card:hover,
.stack-card:hover,
.teaching-card:hover,
.year-block:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(17, 38, 61, 0.08);
  border-color: #bfd5e8;
}

.card-title {
  margin: 0 0 6px;
  font-size: 1.03rem;
}

.card-meta {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.88rem;
}

.stack-list {
  display: grid;
  gap: 14px;
  margin: 12px 0 0;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 9px 0 4px;
}

.chip {
  border-radius: 999px;
  background: var(--soft);
  color: #0e4e5c;
  border: 1px solid #b9dfe1;
  font-size: 0.74rem;
  font-weight: 700;
  padding: 3px 9px;
  letter-spacing: 0.02em;
}

.chip.status {
  background: #ecf6ec;
  border-color: #b8debc;
  color: #245a2a;
}

.chip.light {
  background: #eef3fb;
  border-color: #c9d8ee;
  color: #2a4568;
}

.link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
  font-size: 0.92rem;
}

.timeline-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 12px;
}

.timeline-list li {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fcfeff;
  padding: 12px 14px;
}

.timeline-title {
  font-weight: 700;
  color: #0f2c47;
}

.timeline-meta {
  display: block;
  color: var(--muted);
  font-size: 0.88rem;
  margin-top: 2px;
}

.callout {
  background: #eef6fd;
  border: 1px solid #c7dbef;
  border-radius: 12px;
  padding: 12px 14px;
  margin-top: 12px;
}

.year-block h3 {
  margin: 0 0 10px;
}

.talk-items {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.talk-item {
  border: 1px solid #d6e4f0;
  background: #ffffff;
  border-radius: 10px;
  padding: 11px 12px;
}

.talk-item p {
  margin: 0;
}

.blog-grid,
.notes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 14px;
}

.blog-card,
.note-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  background: #fff;
  transition: transform 0.18s ease, box-shadow 0.2s ease;
}

.blog-card:hover,
.note-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 24px rgba(17, 38, 61, 0.1);
}

.blog-thumb {
  display: block;
  width: 100%;
  height: 154px;
  object-fit: cover;
  border-bottom: 1px solid var(--line);
}

.blog-card-content,
.note-card-content {
  padding: 12px 13px;
}

.blog-title,
.note-title {
  font-weight: 700;
  margin-bottom: 4px;
}

.blog-date,
.note-meta {
  color: var(--muted);
  font-size: 0.84rem;
}

@media (max-width: 1100px) {
  .columns-2 {
    grid-template-columns: 1fr;
  }

  .columns-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 980px) {
  .sidebar {
    position: relative;
    width: auto;
    height: auto;
    inset: auto;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    overflow: visible;
  }

  .main-content {
    margin-left: 0;
    padding: 20px 14px 30px;
  }

  .content-card {
    padding: 24px 18px;
    border-radius: 16px;
  }
}

@media (max-width: 680px) {
  .columns-3 {
    grid-template-columns: 1fr;
  }

  .blog-grid,
  .notes-grid {
    grid-template-columns: 1fr;
  }

  .page-head h1 {
    font-size: 1.8rem;
  }
}