/* ============================================================
   Reset & Variables  —  Catppuccin Mocha palette
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Catppuccin Mocha */
  --crust:    #11111b;
  --mantle:   #181825;
  --base:     #1e1e2e;
  --surface0: #313244;
  --surface1: #45475a;
  --overlay0: #6c7086;
  --overlay1: #7f849c;
  --subtext0: #a6adc8;
  --subtext1: #bac2de;
  --text:     #cdd6f4;

  --lavender: #b4befe;
  --blue:     #89b4fa;
  --sapphire: #74c7ec;
  --sky:      #89dceb;
  --teal:     #94e2d5;
  --green:    #a6e3a1;
  --mauve:    #cba6f7;
  --pink:     #f5c2e7;

  /* Semantic aliases */
  --accent:      var(--teal);
  --accent-rgb:  148, 226, 213;
  --accent-alt:  var(--mauve);
  --link-color:  var(--sapphire);

  --sidebar-width: 265px;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --radius: 6px;
}

html { scroll-behavior: smooth; }

body {
  background: var(--crust);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--link-color);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

/* ============================================================
   Layout
   ============================================================ */
.layout {
  display: flex;
  min-height: 100vh;
}

/* ============================================================
   Sidebar
   ============================================================ */
.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  background: var(--mantle);
  border-right: 1px solid var(--surface0);
  overflow-y: auto;
  z-index: 100;
}

.sidebar-inner {
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  min-height: 100%;
}

/* — Profile — */
.profile {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.9rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--surface0);
}

.avatar-ring {
  padding: 3px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--teal) 0%, var(--mauve) 100%);
  display: inline-block;
  line-height: 0;
}

.avatar {
  display: block;
  width: 84px;
  height: 84px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--mantle);
}

.profile-name {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.profile-name a {
  color: var(--text);
  text-decoration: none;
}
.profile-name a:hover { color: var(--accent); }

.profile-sub {
  font-size: 0.78rem;
  color: var(--overlay1);
  line-height: 1.6;
}
.profile-sub a {
  color: var(--mauve);
  font-weight: 500;
  text-decoration: none;
}
.profile-sub a:hover { text-decoration: underline; }

/* — Navigation — */
.nav {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--overlay1);
  text-decoration: none;
  border: 1px solid transparent;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent);
  background: rgba(var(--accent-rgb), 0.07);
  border-color: rgba(var(--accent-rgb), 0.15);
  text-decoration: none;
}

.nav-prompt {
  color: var(--green);
  font-size: 0.7rem;
  user-select: none;
  opacity: 0.8;
}

/* — Social icons — */
.social {
  margin-top: auto;
  display: flex;
  gap: 0.6rem;
  justify-content: center;
}

.social-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius);
  background: var(--surface0);
  border: 1px solid var(--surface1);
  color: var(--overlay1);
  text-decoration: none;
  transition: all 0.2s;
}

.social-btn svg { width: 16px; height: 16px; }

.social-btn:hover {
  color: var(--accent);
  border-color: rgba(var(--accent-rgb), 0.4);
  background: rgba(var(--accent-rgb), 0.07);
  text-decoration: none;
  transform: translateY(-2px);
}

/* ============================================================
   Main content area
   ============================================================ */
.content-area {
  margin-left: var(--sidebar-width);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.content {
  flex: 1;
  padding: 3rem 4rem 2rem;
  max-width: 840px;
  margin-left: auto;
  margin-right: auto;
}

/* ============================================================
   Typography (markdown output)
   ============================================================ */
.content h2 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-top: 3.5rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--surface0);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.content h2::before {
  content: '//';
  color: var(--mauve);
  opacity: 0.45;
  font-size: 0.65rem;
}

.content h2:first-child { margin-top: 0; }

.content p {
  color: var(--subtext1);
  margin-bottom: 0.9rem;
  font-size: 0.925rem;
}

.content p strong { color: var(--text); }

.content p a {
  color: var(--sapphire);
  border-bottom: 1px solid rgba(116, 199, 236, 0.3);
  text-decoration: none;
  transition: border-color 0.15s;
}
.content p a:hover {
  border-bottom-color: var(--sapphire);
  text-decoration: none;
}

/* ============================================================
   Software cards
   ============================================================ */
.sw-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.sw-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 1rem;
  align-items: start;
  padding: 0.9rem 1.1rem;
  background: var(--mantle);
  border: 1px solid var(--surface0);
  border-left: 3px solid var(--teal);
  border-radius: var(--radius);
  transition: border-left-color 0.2s, background 0.2s;
}

.sw-item:hover {
  background: var(--base);
  border-left-color: var(--mauve);
}

.sw-name {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--teal);
  display: inline-block;
  padding-top: 0.07rem;
  text-decoration: none;
  transition: color 0.15s;
}
.sw-name:hover { color: var(--green); text-decoration: none; }

.sw-item p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--overlay1);
  line-height: 1.55;
}

/* ============================================================
   Publications
   ============================================================ */
.pub-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.year-group {
  display: flex;
  gap: 1.5rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--surface0);
}
.year-group:last-child { border-bottom: none; }

.year-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--mauve);
  letter-spacing: 0.05em;
  min-width: 36px;
  padding-top: 3px;
}

.pub-entries {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
}

.pub-entry {
  font-size: 0.875rem;
  color: var(--subtext0);
  line-height: 1.65;
  padding: 0.5rem 0.7rem;
  border-radius: var(--radius);
  transition: background 0.15s;
}
.pub-entry:hover { background: rgba(var(--accent-rgb), 0.04); }
.pub-entry em { color: var(--text); font-style: italic; }

/* ============================================================
   Workshops
   ============================================================ */
.workshop-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.workshop-entry {
  font-size: 0.875rem;
  color: var(--subtext0);
  line-height: 1.65;
  padding: 0.75rem 1rem;
  background: var(--mantle);
  border: 1px solid var(--surface0);
  border-left: 3px solid var(--blue);
  border-radius: var(--radius);
}
.workshop-entry em { color: var(--text); }

/* ============================================================
   Blog listing
   ============================================================ */
.post-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.post-card {
  display: block;
  padding: 1.1rem 1.4rem;
  background: var(--mantle);
  border: 1px solid var(--surface0);
  border-left: 3px solid var(--surface1);
  border-radius: var(--radius);
  text-decoration: none;
  transition: all 0.2s ease;
}

.post-card:hover {
  background: var(--base);
  border-color: var(--surface1);
  border-left-color: var(--teal);
  text-decoration: none;
  transform: translateX(3px);
}

.post-card-date {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--overlay0);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.3rem;
}

.post-card-title {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--subtext1);
  transition: color 0.15s;
}
.post-card:hover .post-card-title { color: var(--teal); }

.post-card-excerpt {
  margin-top: 0.35rem;
  font-size: 0.82rem;
  color: var(--overlay0);
  line-height: 1.5;
}

.no-posts {
  padding: 2.5rem;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--surface1);
  border: 1px dashed var(--surface0);
  border-radius: var(--radius);
}

/* ============================================================
   Blog post page
   ============================================================ */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--overlay1);
  text-decoration: none;
  margin-bottom: 2.5rem;
  transition: color 0.15s;
}
.back-link:hover { color: var(--accent); text-decoration: none; }

.post-header {
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--surface0);
}

.post-meta-date {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--overlay0);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.65rem;
}

.post-title {
  font-size: 1.7rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
  margin-bottom: 0.5rem;
}

.post-author {
  font-size: 0.82rem;
  color: var(--overlay1);
}

.post-body { font-size: 0.925rem; color: var(--subtext1); line-height: 1.8; }
.post-body h2 { font-size: 1.2rem; color: var(--text); margin: 2rem 0 0.75rem; }
.post-body h3 { font-size: 1rem; color: var(--subtext1); margin: 1.5rem 0 0.5rem; }
.post-body p  { margin-bottom: 1.1rem; }

.post-body a {
  color: var(--sapphire);
  border-bottom: 1px solid rgba(116, 199, 236, 0.3);
  text-decoration: none;
}
.post-body a:hover { border-bottom-color: var(--sapphire); }

.post-body code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  background: var(--surface0);
  padding: 0.15em 0.4em;
  border-radius: 3px;
  color: var(--teal);
}

.post-body pre {
  background: var(--mantle);
  border: 1px solid var(--surface0);
  border-radius: var(--radius);
  padding: 1.25rem;
  overflow-x: auto;
  margin: 1.5rem 0;
}
.post-body pre code { background: none; padding: 0; }

.post-body blockquote {
  border-left: 3px solid var(--mauve);
  padding-left: 1rem;
  color: var(--overlay1);
  margin: 1.5rem 0;
  font-style: italic;
}

.post-tags {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--surface0);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--overlay0);
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
}

.post-tag {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  background: rgba(203, 166, 247, 0.1);
  border: 1px solid rgba(203, 166, 247, 0.2);
  border-radius: 3px;
  color: var(--mauve);
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  padding: 1.5rem 4rem;
  border-top: 1px solid var(--surface0);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--overlay0);
}
.footer a { color: var(--overlay1); }
.footer a:hover { color: var(--accent); text-decoration: none; }

/* ============================================================
   Scrollbar
   ============================================================ */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: var(--crust); }
::-webkit-scrollbar-thumb { background: var(--surface0); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--surface1); }

/* ============================================================
   Mobile
   ============================================================ */
@media (max-width: 768px) {
  .layout { flex-direction: column; }

  .sidebar {
    position: static;
    width: 100%;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--surface0);
  }

  .sidebar-inner {
    padding: 1rem 1.25rem;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
  }

  .profile {
    flex-direction: row;
    text-align: left;
    border-bottom: none;
    padding-bottom: 0;
    gap: 0.75rem;
    flex: 1;
    min-width: 180px;
  }

  .avatar-ring { line-height: 0; }
  .avatar { width: 48px; height: 48px; }

  .nav { flex-direction: row; flex-wrap: wrap; }
  .social { margin-top: 0; }

  .content-area { margin-left: 0; }
  .content { padding: 1.5rem 1.25rem; }
  .footer { padding: 1rem 1.25rem; }

  .sw-item { grid-template-columns: 1fr; gap: 0.35rem; }
  .year-group { flex-direction: column; gap: 0.35rem; }
  .year-label { min-width: auto; }
}