/* ==========================================================================
   Academic Research Portfolio — Faithful Academicpages Replica
   ========================================================================== */

/* ── Typography & Variables (academicpages _themes.scss) ──────────── */
:root {
  /* academicpages standard system typefaces */
  --font-serif: Georgia, Times, serif;
  --font-sans: -apple-system, ".SFNSText-Regular", "San Francisco", "Roboto", "Segoe UI", "Helvetica Neue", "Lucida Grande", Arial, sans-serif;
  --font-mono: Monaco, Consolas, "Lucida Console", monospace;
  
  --global-text-color: #333333;
  --global-text-color-light: #7a8288;
  --global-link-color: #0b93d5;
  --global-link-color-hover: #1e3799;
  --global-bg-color: #ffffff;
  --global-border-color: #e5e5e5;
  --sidebar-bg-color: #f7f9fa;
  
  --type-size-1: 2.441em;  /* ~39px */
  --type-size-2: 1.953em;  /* ~31px */
  --type-size-3: 1.563em;  /* ~25px */
  --type-size-4: 1.25em;   /* ~20px */
  --type-size-5: 1em;      /* ~16px */
  --type-size-6: 0.75em;   /* ~12px */
  
  --box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

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

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  color: var(--global-text-color);
  background-color: var(--global-bg-color);
  line-height: 1.5;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: bold;
  margin-top: 1.5em;
  margin-bottom: 0.5em;
  line-height: 1.25;
}

h1 { font-size: var(--type-size-2); }
h2 { font-size: var(--type-size-3); border-bottom: 1px solid var(--global-border-color); padding-bottom: 0.25em; }
h3 { font-size: var(--type-size-4); }

p, li {
  font-size: var(--type-size-5);
  margin-bottom: 1.3em;
}

img { max-width: 100%; height: auto; }

/* ── Layout (academicpages _page.scss + Grid) ─────────────── */
.page-wrapper {
  max-width: 1280px; /* $x-large */
  margin: 0 auto;
  padding: 2em 1em;
  display: flex;
  flex-direction: column;
}

@media (min-width: 925px) /* $large */ {
  .page-wrapper {
    flex-direction: row;
    padding-top: 4em;
  }
}

/* ── Sidebar (academicpages _sidebar.scss) ────────────────── */
.sidebar {
  margin-bottom: 2em;
}

@media (min-width: 925px) {
  .sidebar {
    width: 20%;
    position: sticky;
    top: 2em;
    padding-right: 2em;
  }
}

.sidebar-profile {
  text-align: center;
}

@media (min-width: 925px) {
  .sidebar-profile {
    text-align: left;
  }
}

.sidebar-photo {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center top;
  margin-bottom: 1em;
  padding: 5px;
  border: 1px solid var(--global-border-color);
}

.sidebar-name {
  font-size: var(--type-size-4);
  margin-top: 0;
  margin-bottom: 0.2em;
}

.sidebar-title {
  font-size: var(--type-size-5);
  color: var(--global-text-color-light);
  margin-bottom: 0.2em;
}

.sidebar-degree {
  font-size: var(--type-size-6);
  color: var(--global-text-color-light);
  margin-bottom: 1em;
  opacity: 0.8;
}

.sidebar-affiliation {
  margin-bottom: 1em;
}

.sidebar-affiliation-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--type-size-6);
  color: var(--global-text-color);
  margin-bottom: 6px;
}
.sidebar-affiliation-item svg { width: 14px; height: 14px; color: var(--global-text-color-light); }

.sidebar-links {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 1.5em;
  padding: 0;
  list-style: none;
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--type-size-5);
  color: var(--global-text-color);
  text-decoration: none;
}
.sidebar-link:hover { text-decoration: underline; }
.sidebar-link svg { width: 16px; height: 16px; color: var(--global-text-color-light); }

.sidebar-cv-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 1.5em;
  font-size: var(--type-size-6);
  color: var(--global-text-color);
  font-weight: bold;
}
.sidebar-cv-btn:hover { text-decoration: underline; }
.sidebar-cv-btn svg { width: 14px; height: 14px; }

/* ── Main Content Area ────────────────────────────────────── */
.main-content {
  flex: 1;
  max-width: 100%;
}

@media (min-width: 925px) {
  .main-content {
    width: 75%;
    padding-left: 2em;
  }
}

.page-title {
  margin-top: 0;
  font-size: var(--type-size-1);
  border-bottom: none;
  font-family: var(--font-sans);
  font-weight: bold;
  margin-bottom: 1rem;
}

.prose p {
  line-height: 1.6;
}

/* ── Publications (academicpages list style) ──────────────── */
.pub-card {
  margin-bottom: 2em;
}

.pub-title {
  font-size: var(--type-size-4);
  font-weight: normal;
  margin-bottom: 0.2em;
}

.pub-title a {
  text-decoration: underline;
}

.pub-authors {
  font-size: var(--type-size-5);
  margin-bottom: 0.2em;
}

.pub-meta {
  font-size: var(--type-size-6);
  color: var(--global-text-color-light);
  margin-bottom: 0.5em;
}

.pub-links {
  margin-top: 0.5em;
  font-size: var(--type-size-6);
}

.pub-links a, .pub-cite-btn {
  margin-right: 15px;
  background: none;
  border: none;
  color: var(--global-link-color);
  font-size: inherit;
  font-family: inherit;
  cursor: pointer;
  padding: 0;
  text-decoration: none;
}
.pub-links a:hover, .pub-cite-btn:hover { text-decoration: underline; color: var(--global-link-color-hover); }

.pub-bibtex {
  margin-top: 0.5em;
  padding: 1em;
  background-color: var(--sidebar-bg-color);
  border: 1px solid var(--global-border-color);
  font-family: var(--font-mono);
  font-size: 0.85em;
  overflow-x: auto;
}

/* ── Talks (academicpages style) ──────────────────────────── */
.talk-card {
  margin-bottom: 2em;
}
.talk-title {
  font-size: var(--type-size-4);
  font-weight: normal;
  margin-bottom: 0.2em;
}
.talk-venue {
  font-size: var(--type-size-5);
  margin-bottom: 0.2em;
}
.talk-date {
  font-size: var(--type-size-6);
  color: var(--global-text-color-light);
}

/* ── Navigation Masthead (academicpages minimal topbar) ───── */
.top-nav {
  border-bottom: 1px solid var(--global-border-color);
  padding: 1.5em 0;
  background: var(--global-bg-color);
}
.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1em;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.nav-brand {
  font-size: var(--type-size-4);
  font-weight: bold;
  color: var(--global-text-color);
}
.nav-links {
  display: none;
  list-style: none;
  margin: 0;
  padding: 0;
}
@media (min-width: 768px) {
  .nav-links {
    display: flex;
    gap: 1.5em;
  }
}
.nav-links a {
  font-size: var(--type-size-5);
  color: var(--global-text-color);
}
.nav-links a:hover {
  text-decoration: underline;
}
.mobile-menu-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
@media (min-width: 768px) {
  .mobile-menu-btn { display: none; }
}

/* ── CV Elements ─────────────────────────────────────────── */
.cv-section-title {
  border-bottom: 1px solid var(--global-border-color);
  padding-bottom: 0.2em;
  margin-bottom: 1em;
}
.cv-item {
  margin-bottom: 1.5em;
}
.cv-item-title {
  font-weight: bold;
  font-size: var(--type-size-5);
  margin-bottom: 0.1em;
}
.cv-item-subtitle {
  font-style: italic;
  font-size: var(--type-size-5);
  margin-bottom: 0.1em;
}
.cv-item-date {
  font-size: var(--type-size-6);
  color: var(--global-text-color-light);
}
.cv-item-detail {
  font-size: var(--type-size-5);
  margin-top: 0.5em;
}