/* =============================================================
   Agapito E. Santangelo — Personal academic site
   ============================================================= */

:root {
  --bg:        #fbfaf6;
  --paper:    #ffffff;
  --ink:      #1a1a1a;
  --ink-soft: #4a4a4a;
  --ink-mute: #7a7674;
  --rule:     #d6d3cc;
  --rule-soft:#ece9e0;
  --accent:   #1a3a6e;
  --accent-h: #c14b3f;

  --serif:  "Crimson Pro", "EB Garamond", Georgia, "Times New Roman", serif;
  --sans:   "Geist", "Public Sans", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --mono:   "JetBrains Mono", "Geist Mono", "SF Mono", Menlo, monospace;

  --maxw: 1180px;
}

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

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-image:
    radial-gradient(circle at 1px 1px, rgba(0,0,0,0.018) 1px, transparent 0);
  background-size: 22px 22px;
}

/* Layout shell ------------------------------------------------ */
.shell {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 0;
  max-width: var(--maxw);
  margin: 0 auto;
  min-height: 100vh;
}

/* Sidebar ----------------------------------------------------- */
.sidebar {
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
  padding: 3rem 2rem 2rem 2rem;
  border-right: 1px solid var(--rule);
  background: linear-gradient(180deg, rgba(255,255,255,0.5) 0%, transparent 100%);
  overflow-y: auto;
  font-family: var(--sans);
}

.profile-img {
  width: 132px;
  height: 132px;
  border-radius: 50%;
  background: var(--rule-soft);
  border: 1px solid var(--rule);
  margin: 0 0 1.5rem 0;
  display: block;
  object-fit: cover;
  filter: grayscale(0.15);
}

.profile-img.placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  font-size: 2.4rem;
  font-style: italic;
  color: var(--ink-mute);
}

.name {
  font-family: var(--serif);
  font-size: 1.55rem;
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 0.25rem 0;
  letter-spacing: -0.01em;
}

.tagline {
  font-family: var(--sans);
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--ink-soft);
  margin: 0 0 1.5rem 0;
  line-height: 1.4;
}

.tagline em {
  font-style: italic;
  color: var(--accent);
}

.sidebar-block {
  margin: 0 0 1.25rem 0;
  font-size: 0.86rem;
  line-height: 1.55;
  color: var(--ink-soft);
}

.sidebar-block a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  transition: color 0.18s, border-color 0.18s;
}

.sidebar-block a:hover {
  color: var(--accent-h);
  border-color: var(--accent-h);
}

.cv-button {
  display: inline-block;
  margin-top: 0.5rem;
  padding: 0.4rem 0.9rem;
  background: var(--ink);
  color: var(--paper) !important;
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid var(--ink) !important;
  transition: background 0.18s, color 0.18s;
}

.cv-button:hover {
  background: var(--accent);
  border-color: var(--accent) !important;
  color: var(--paper) !important;
}

/* Sidebar nav */
.nav {
  list-style: none;
  margin: 2rem 0 0 0;
  padding: 1.5rem 0 0 0;
  border-top: 1px solid var(--rule);
}

.nav li { margin: 0; }

.nav a {
  display: block;
  padding: 0.4rem 0;
  font-family: var(--sans);
  font-size: 0.92rem;
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: none;
  letter-spacing: 0.005em;
  transition: color 0.18s, padding 0.18s;
}

.nav a:hover {
  color: var(--accent-h);
  padding-left: 6px;
}

.nav a.current {
  color: var(--ink);
  font-weight: 500;
}

.nav a.current::before {
  content: "› ";
  color: var(--accent);
}

.lang-switch {
  display: flex;
  gap: 0.4rem;
  margin: 0 0 2rem 0;
  padding: 0 0 1.2rem 0;
  border-bottom: 1px solid var(--rule);
  font-family: var(--sans);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
}

.lang-switch a {
  display: inline-block;
  padding: 0.3rem 0.65rem;
  color: var(--ink-soft);
  text-decoration: none;
  border: 1px solid var(--rule);
  border-radius: 2px;
  font-weight: 500;
  transition: all 0.15s ease;
}

.lang-switch a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.lang-switch a.active {
  color: #fff;
  background: var(--ink);
  border-color: var(--ink);
  font-weight: 600;
}

/* Main content ----------------------------------------------- */
.main {
  padding: 4rem 4rem 4rem 4rem;
  min-width: 0;
}

.page-title {
  font-family: var(--serif);
  font-size: 2.6rem;
  font-weight: 500;
  letter-spacing: -0.015em;
  margin: 0 0 0.4rem 0;
  line-height: 1;
}

.page-title::after {
  content: "";
  display: block;
  width: 48px;
  height: 2px;
  background: var(--accent);
  margin: 1.2rem 0 2rem 0;
}

.lead {
  font-family: var(--serif);
  font-size: 1.18rem;
  line-height: 1.65;
  color: var(--ink);
  margin: 0 0 2rem 0;
  max-width: 64ch;
}

.lead strong {
  font-weight: 600;
  color: var(--accent);
}

p {
  max-width: 70ch;
  margin: 0 0 1rem 0;
}

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(26,58,110,0.35);
  transition: color 0.18s, border-color 0.18s;
}

a:hover {
  color: var(--accent-h);
  border-bottom-color: var(--accent-h);
}

h2 {
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: -0.005em;
  color: var(--ink);
  margin: 3rem 0 1rem 0;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--rule);
}

h2::before {
  content: "§ ";
  color: var(--ink-mute);
  font-weight: 400;
}

h3 {
  font-family: var(--sans);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin: 2rem 0 0.6rem 0;
}

/* Entry list (publications, talks, etc.) */
.entries {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem 0;
}

.entry {
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--rule-soft);
  font-size: 0.97rem;
  line-height: 1.55;
}

.entry:last-child {
  border-bottom: none;
}

.entry-title {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
}

.entry-venue {
  font-family: var(--sans);
  font-size: 0.85rem;
  color: var(--ink-mute);
  display: block;
  margin-top: 0.2rem;
  letter-spacing: 0.005em;
}

.entry-venue strong {
  color: var(--ink-soft);
  font-weight: 500;
}

.entry-meta {
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--ink-mute);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.entry .author-self {
  font-weight: 600;
  color: var(--ink);
}

.entry-tag {
  display: inline-block;
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.15rem 0.5rem;
  margin-right: 0.5rem;
  border: 1px solid var(--rule);
  color: var(--ink-mute);
  vertical-align: 1px;
}

.entry-tag.peer    { border-color: var(--accent); color: var(--accent); }
.entry-tag.wp      { border-color: #b88914; color: #8a6700; }
.entry-tag.conf    { border-color: #6a8859; color: #4f6841; }
.entry-tag.report  { border-color: var(--ink-mute); color: var(--ink-mute); }

/* Two column timeline (education / experience) */
.timeline {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 1rem 0 2rem 0;
}

.tl-item {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 1.5rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--rule-soft);
}

.tl-item:last-child { border-bottom: none; }

.tl-date {
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--ink-mute);
  letter-spacing: 0.04em;
  padding-top: 0.2rem;
}

.tl-body strong {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.05rem;
  display: block;
  margin-bottom: 0.15rem;
}

.tl-body em {
  font-style: italic;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.tl-body p {
  margin: 0.4rem 0 0 0;
  font-size: 0.95rem;
  color: var(--ink-soft);
}

/* Skill list */
.skills-grid {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 0.8rem 1.5rem;
  margin: 1rem 0 2rem 0;
}

.skills-grid dt {
  font-family: var(--sans);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-mute);
  padding-top: 0.15rem;
}

.skills-grid dd {
  margin: 0;
  font-size: 0.97rem;
  color: var(--ink-soft);
}

/* Pull-quote */
.callout {
  margin: 2rem 0;
  padding: 1.4rem 1.8rem;
  background: var(--paper);
  border-left: 3px solid var(--accent);
  font-family: var(--serif);
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--ink);
  font-style: italic;
}

/* Footer in main area */
.foot {
  margin-top: 5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--rule);
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--ink-mute);
  letter-spacing: 0.02em;
}

.foot a { color: var(--ink-soft); border: none; }
.foot a:hover { color: var(--accent-h); }

/* Experience cards (rich variant of timeline) ---------------- */
.exp-item {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 1.5rem;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--rule-soft);
}
.exp-item:last-child { border-bottom: none; }

.exp-date {
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--ink-mute);
  letter-spacing: 0.04em;
  padding-top: 0.2rem;
}
.exp-date.current::before {
  content: "● ";
  color: #6a8859;
  font-size: 0.7em;
  vertical-align: 1px;
}

.exp-role {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.05rem;
  display: block;
  margin-bottom: 0.1rem;
}

.exp-org {
  font-family: var(--sans);
  font-size: 0.88rem;
  color: var(--ink-soft);
  margin-bottom: 0.35rem;
  letter-spacing: 0.005em;
}

.exp-org a {
  color: var(--ink-soft);
  border-bottom: 1px dotted var(--rule);
}
.exp-org a:hover { color: var(--accent-h); border-bottom-color: var(--accent-h); }

.exp-org .badge {
  display: inline-block;
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.1rem 0.4rem;
  margin-left: 0.4rem;
  border: 1px solid var(--rule);
  color: var(--ink-mute);
  vertical-align: 1px;
}

.exp-desc {
  font-size: 0.95rem;
  color: var(--ink-soft);
  line-height: 1.55;
  margin: 0.3rem 0 0 0;
}

.exp-keywords {
  margin-top: 0.5rem;
  font-family: var(--sans);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

/* Latest / News block (home page) ----------------------------- */
.latest {
  margin: 1.5rem 0 2.5rem 0;
  padding: 1.2rem 1.4rem;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent-h);
}

.latest-label {
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-h);
  margin: 0 0 0.6rem 0;
  display: block;
}

.latest-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.latest-list li {
  padding: 0.35rem 0;
  font-size: 0.93rem;
  line-height: 1.5;
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 0.8rem;
  border-bottom: 1px dotted var(--rule-soft);
}

.latest-list li:last-child { border-bottom: none; }

.latest-list .when {
  font-family: var(--sans);
  font-size: 0.75rem;
  color: var(--ink-mute);
  letter-spacing: 0.04em;
  padding-top: 0.15rem;
}

/* Affiliations bar (sidebar bottom) ---------------------------- */
.affiliations {
  margin: 2rem 0 0 0;
  padding: 1.2rem 0 0 0;
  border-top: 1px solid var(--rule);
}

.affiliations-label {
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin: 0 0 0.6rem 0;
  display: block;
}

.affiliations-list {
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--sans);
  font-size: 0.78rem;
  line-height: 1.55;
  color: var(--ink-soft);
}

.affiliations-list li {
  padding: 0.18rem 0;
}

.affiliations-list li::before {
  content: "▸ ";
  color: var(--ink-mute);
  font-size: 0.7em;
  vertical-align: 1px;
}

.affiliations-list a {
  color: var(--ink-soft);
  text-decoration: none;
  border: none;
  transition: color 0.18s;
}

.affiliations-list a:hover {
  color: var(--accent-h);
}

/* Latest / news block ---------------------------------------- */
.latest {
  margin: 2rem 0 2.5rem 0;
  padding: 1.6rem 1.8rem;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
}

.latest-label {
  display: block;
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.8rem;
}

.latest-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.latest-item {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 1rem;
  padding: 0.7rem 0;
  border-bottom: 1px dashed var(--rule-soft);
}
.latest-item:last-child { border-bottom: none; padding-bottom: 0; }
.latest-item:first-child { padding-top: 0; }

.latest-date {
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--ink-mute);
  letter-spacing: 0.04em;
  padding-top: 0.15rem;
}

.latest-body {
  font-family: var(--serif);
  font-size: 0.97rem;
  line-height: 1.55;
  color: var(--ink);
}

.latest-body strong { color: var(--accent); font-weight: 600; }

/* Logo / affiliations bar ------------------------------------ */
.logo-bar {
  margin: 4rem 0 1rem 0;
  padding: 1.5rem 0 1rem 0;
  border-top: 1px solid var(--rule);
}

.logo-bar-label {
  display: block;
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 0.8rem;
}

.logo-bar-items {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.9rem;
  font-family: var(--sans);
  font-size: 0.82rem;
  align-items: baseline;
}

.logo-bar-items a,
.logo-bar-items span.no-link {
  color: var(--ink-soft);
  text-decoration: none;
  border: none;
  font-variant: small-caps;
  letter-spacing: 0.04em;
  font-weight: 500;
}

.logo-bar-items a:hover {
  color: var(--accent);
}

.logo-bar-items .sep {
  color: var(--rule);
  user-select: none;
  font-weight: 300;
}

/* Project card ----------------------------------------------- */
.project {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--rule-soft);
}
.project:last-child { border-bottom: none; }

.project-header {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  margin-bottom: 0.4rem;
  flex-wrap: wrap;
}

.project-title {
  font-family: var(--serif);
  font-size: 1.18rem;
  font-weight: 600;
  letter-spacing: -0.005em;
  margin: 0;
  text-transform: none;
  color: var(--ink);
}

.project-status {
  display: inline-block;
  font-family: var(--sans);
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.15rem 0.55rem;
  border: 1px solid var(--rule);
  color: var(--ink-mute);
}
.project-status.ongoing  { border-color: #6a8859; color: #4f6841; }
.project-status.review   { border-color: #b88914; color: #8a6700; }
.project-status.published { border-color: var(--accent); color: var(--accent); }

.project-summary {
  font-family: var(--serif);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--ink);
  margin: 0.4rem 0 0.6rem 0;
}

.project-meta {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 0.3rem 1rem;
  font-family: var(--sans);
  font-size: 0.83rem;
  color: var(--ink-soft);
  margin-top: 0.5rem;
}
.project-meta dt {
  font-weight: 600;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-mute);
  padding-top: 0.15rem;
}
.project-meta dd { margin: 0; }
.project-meta dd a {
  color: var(--ink-soft);
  border-bottom: 1px dotted var(--rule);
}
.project-meta dd a:hover {
  color: var(--accent-h);
  border-bottom-color: var(--accent-h);
}

.project-tags {
  margin-top: 0.7rem;
  font-family: var(--sans);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

/* Top bar (language switcher) -------------------------------- */
.top-bar {
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
  padding: 0.7rem 2rem;
}
.top-bar-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 1rem;
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.14em;
}
.top-bar a {
  color: var(--ink-mute);
  text-decoration: none;
  border: none;
  padding: 0.15rem 0;
  cursor: pointer;
  transition: color 0.15s ease;
}
.top-bar a:hover { color: var(--accent); }
.top-bar a.active {
  color: var(--ink);
  border-bottom: 1px solid var(--accent);
}

/* Manifesto — bold opening line on About page ----------------- */
.manifesto {
  font-family: var(--serif);
  font-size: 1.22rem;
  font-weight: 600;
  line-height: 1.45;
  color: var(--ink);
  letter-spacing: -0.005em;
  margin: 0 0 1.75rem;
}

/* Cross-reference between experiences and projects ----------- */
.cross-ref {
  margin-top: 0.7rem;
  padding-top: 0.5rem;
  border-top: 1px dashed var(--rule-soft);
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--ink-mute);
  font-style: italic;
}
.cross-ref a {
  color: var(--accent);
  border-bottom: 1px dotted var(--accent);
  font-style: normal;
  font-weight: 500;
}
.cross-ref a:hover {
  color: var(--accent-h);
  border-bottom-style: solid;
}

/* Anchor offset so jumps don't land under top-bar */
.project[id], .exp-item[id] {
  scroll-margin-top: 80px;
}

/* Inline photo on entry list ---------------------------------- */
.entry-photo {
  margin: 0.7rem 0 0.4rem 0;
  max-width: 540px;
}
.entry-photo img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--rule);
  background: #fff;
}
.entry-photo figcaption {
  font-family: var(--sans);
  font-size: 0.74rem;
  color: var(--ink-mute);
  letter-spacing: 0.03em;
  margin-top: 0.45rem;
  font-style: italic;
  line-height: 1.4;
}

/* Mobile ------------------------------------------------------ */
@media (max-width: 880px) {
  .top-bar { padding: 0.6rem 1.5rem; }
  .top-bar-inner { font-size: 0.75rem; gap: 0.8rem; }
  .shell {
    grid-template-columns: 1fr;
  }
  .sidebar {
    position: static;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--rule);
    padding: 2rem 1.5rem;
  }
  .main {
    padding: 2rem 1.5rem 3rem 1.5rem;
  }
  .page-title { font-size: 2rem; }
  .tl-item { grid-template-columns: 1fr; gap: 0.3rem; }
  .exp-item { grid-template-columns: 1fr; gap: 0.3rem; }
  .skills-grid { grid-template-columns: 1fr; gap: 0.3rem 0; }
  .skills-grid dt { margin-top: 1rem; }
  .latest-item { grid-template-columns: 1fr; gap: 0.1rem; }
  .project-meta { grid-template-columns: 1fr; gap: 0.1rem 0; }
  .project-meta dt { margin-top: 0.4rem; }
}