/* ============================================================
   Denis Lomov — Academic Website
   Sidebar layout + Day/Night mode
   ============================================================ */

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg: #f8f5ee;
  --color-text: #3d3929;
  --color-text-light: #6b6452;
  --color-heading: #1c1a12;
  --color-accent: #2e6db4;
  --color-accent-hover: #1f5694;
  --color-accent-light: #4088cc;
  --color-border: #e2ddd0;
  --color-surface: #efece3;
  --color-tag-bg: #e4dfd4;
  --color-tag-text: #2e6db4;
  --color-gold: #c07a18;
  --color-gold-light: #f5edd8;
  --color-sidebar-bg: #f2efe6;
  --color-sidebar-text: #3d3929;
  --color-sidebar-accent: #2e6db4;
  --color-sidebar-border: #e2ddd0;
  --font-body: 'Lora', Georgia, 'Times New Roman', serif;
  --font-heading: 'Special Elite', 'Courier New', Courier, monospace;
  --max-width: 780px;
  --sidebar-width: 320px;
}

[data-theme="dark"] {
  --color-bg: #1e2330;
  --color-text: #c5c9d4;
  --color-text-light: #8e94a5;
  --color-heading: #e4e7ef;
  --color-accent: #6aa8e0;
  --color-accent-hover: #8fc0ed;
  --color-accent-light: #6aa8e0;
  --color-border: #2c3244;
  --color-surface: #262c3a;
  --color-tag-bg: #2c3244;
  --color-tag-text: #8fc0ed;
  --color-gold: #e4a840;
  --color-gold-light: #2a2518;
  --color-sidebar-bg: #1a1f2b;
  --color-sidebar-text: #c5c9d4;
  --color-sidebar-accent: #6aa8e0;
  --color-sidebar-border: #2c3244;
}

html {
  font-size: 17px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.75;
}

a {
  color: var(--color-accent-light);
  text-decoration: underline;
  text-decoration-color: rgba(64,136,204,0.35);
  text-underline-offset: 3px;
  transition: all 0.15s ease;
}

a:hover {
  color: var(--color-accent);
  text-decoration-color: var(--color-accent);
}

[data-theme="dark"] a {
  text-decoration-color: rgba(106,168,224,0.35);
}

[data-theme="dark"] a:hover {
  text-decoration-color: var(--color-accent);
}

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ============================================================
   SIDEBAR LAYOUT
   ============================================================ */

.site-layout {
  display: flex;
  min-height: 100vh;
}

.main-content {
  flex: 1;
  min-width: 0;
  margin-right: var(--sidebar-width);
  display: flex;
  flex-direction: column;
}

/* --- Sidebar (right side, fixed) --- */
.sidebar {
  position: fixed;
  top: 0;
  right: 0;
  width: var(--sidebar-width);
  height: 100vh;
  overflow-y: auto;
  background: var(--color-sidebar-bg);
  border-left: 1px solid var(--color-sidebar-border);
  z-index: 100;
  display: flex;
  flex-direction: column;
}

.sidebar-inner {
  padding: 2.5rem 1.75rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  flex: 1;
}

/* Profile */
.sidebar-profile {
  text-align: center;
}

.sidebar-photo {
  width: 170px;
  height: 170px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--color-border);
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
  transition: border-color 0.2s;
}

[data-theme="dark"] .sidebar-photo {
  border-color: #334155;
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}

.sidebar-name {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 0.85rem;
  margin-bottom: 0.2rem;
}

.sidebar-name a {
  color: var(--color-heading);
  text-decoration: none !important;
}

.sidebar-name a:hover {
  color: var(--color-accent-light);
  text-decoration: none !important;
}

.sidebar-subtitle {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 0.15rem;
}

.sidebar-affiliation {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 0.05rem;
}

.sidebar-affiliation a {
  color: var(--color-text-light);
  text-decoration: underline;
  text-decoration-color: rgba(100,116,139,0.4);
  text-underline-offset: 2px;
}

.sidebar-affiliation a:hover {
  color: var(--color-accent-light);
}

/* Sidebar Nav */
.sidebar-nav {
  width: 100%;
}

.sidebar-nav ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.sidebar-nav a {
  display: block;
  padding: 0.55rem 0.85rem;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-sidebar-text);
  border-radius: 6px;
  text-decoration: none !important;
  transition: all 0.15s ease;
}

.sidebar-nav a:hover {
  background: var(--color-surface);
  color: var(--color-accent-light);
  text-decoration: none !important;
}

.sidebar-nav a.active {
  background: var(--color-accent-light);
  color: #ffffff;
}

[data-theme="dark"] .sidebar-nav a.active {
  background: rgba(96,165,250,0.15);
  color: var(--color-accent-light);
}

/* Sidebar Social */
.sidebar-social {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

.sidebar-social a {
  color: var(--color-text-light);
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  text-decoration: none !important;
}

.sidebar-social a:hover {
  color: var(--color-accent-light);
  background: var(--color-surface);
}

/* Theme toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  cursor: pointer;
  color: var(--color-text-light);
  font-size: 0.82rem;
  font-family: var(--font-body);
  transition: all 0.15s ease;
  width: 100%;
  justify-content: center;
  margin-top: auto;
}

.theme-toggle:hover {
  border-color: var(--color-accent-light);
  color: var(--color-accent-light);
}

.theme-icon {
  display: flex;
  align-items: center;
}

.theme-label {
  font-weight: 500;
}

/* ============================================================
   MOBILE BAR & NAV
   ============================================================ */

.mobile-bar {
  display: none;
}

.mobile-nav {
  display: none;
}

/* ============================================================
   PAGE CONTENT STYLES
   ============================================================ */

.page {
  padding: 2.5rem 0 4rem;
  flex: 1;
}

.page-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-heading);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.page-intro {
  font-size: 1rem;
  color: var(--color-text);
  margin-bottom: 1rem;
  line-height: 1.8;
}

.page-content {
  line-height: 1.8;
}

.page-content p {
  margin-bottom: 1rem;
}

.page-content ul,
.page-content ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.page-content li {
  margin-bottom: 0.4rem;
}

/* ============================================================
   HOMEPAGE
   ============================================================ */

.about-section {
  padding: 2.5rem 0 1.5rem;
}

.about-section h2,
.recent-research h2,
.awards-section h2,
.models-section h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-heading);
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
  padding-bottom: 0.5rem;
  border-bottom: 3px solid var(--color-accent);
  display: inline-block;
}

.about-text {
  font-size: 1rem;
  line-height: 1.8;
}

.about-text p {
  margin-bottom: 1rem;
}

/* Quick contact row on homepage */
.home-contact {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
  margin-bottom: 1.5rem;
}

.home-contact .btn {
  font-size: 0.85rem;
}

/* ============================================================
   SECTIONS
   ============================================================ */

.recent-research,
.models-section {
  padding: 2.5rem 0;
  border-top: 1px solid var(--color-border);
}

/* ============================================================
   PAPERS
   ============================================================ */

.recent-research h3,
.page h2 {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-top: 2rem;
  margin-bottom: 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--color-border);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.paper-entry {
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--color-border);
}

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

.paper-title {
  font-weight: 600;
  font-size: 1.02rem;
  color: var(--color-heading);
  margin-bottom: 0.25rem;
  line-height: 1.5;
}

.paper-authors {
  font-size: 0.92rem;
  color: var(--color-text-light);
  margin-bottom: 0.4rem;
}

.paper-authors em {
  font-style: italic;
}

.paper-status {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  background: var(--color-tag-bg);
  color: var(--color-tag-text);
  margin-bottom: 0.4rem;
  letter-spacing: 0.02em;
}

.paper-conferences {
  font-size: 0.88rem;
  color: var(--color-text-light);
  font-style: italic;
  margin-bottom: 0.4rem;
}

.paper-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.4rem;
}

.paper-link {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.22rem 0.7rem;
  border-radius: 20px;
  border: 1.5px solid var(--color-accent-light);
  color: var(--color-accent-light);
  text-decoration: none !important;
  transition: all 0.15s ease;
}

.paper-link:hover {
  background: var(--color-accent-light);
  color: white;
  text-decoration: none !important;
  box-shadow: 0 2px 6px rgba(64,136,204,0.25);
}

[data-theme="dark"] .paper-link:hover {
  box-shadow: 0 2px 6px rgba(96,165,250,0.25);
}

.paper-abstract {
  margin-top: 0.5rem;
}

.paper-abstract summary {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-accent-light);
  cursor: pointer;
}

.paper-abstract p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-top: 0.5rem;
  padding: 0.75rem 1rem;
  background: var(--color-surface);
  border-radius: 6px;
  border-left: 3px solid var(--color-accent-light);
  line-height: 1.7;
}

.see-more {
  margin-top: 1.5rem;
}

.see-more a {
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Research question */
.research-question {
  font-size: 0.9rem;
  color: var(--color-text);
  margin-bottom: 0.4rem;
  font-style: italic;
  line-height: 1.6;
}

/* Paper Figures */
.paper-figure {
  margin: 0.75rem 0;
  text-align: center;
}

.paper-figure img {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  border: 1px solid var(--color-border);
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

[data-theme="dark"] .paper-figure img {
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.figure-caption {
  font-size: 0.82rem;
  color: var(--color-text-light);
  font-style: italic;
  margin-top: 0.4rem;
  line-height: 1.5;
}

.paper-figure-details {
  margin-top: 0.5rem;
}

.paper-figure-details summary {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-accent-light);
  cursor: pointer;
}

/* ============================================================
   FILTER TABS (Research page)
   ============================================================ */

.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.filter-tab {
  display: inline-block;
  padding: 0.4rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: var(--font-body);
  border-radius: 20px;
  border: 1.5px solid var(--color-border);
  background: transparent;
  color: var(--color-text-light);
  cursor: pointer;
  transition: all 0.15s ease;
}

.filter-tab:hover {
  border-color: var(--color-accent-light);
  color: var(--color-accent-light);
}

.filter-tab.active {
  background: var(--color-accent-light);
  border-color: var(--color-accent-light);
  color: #ffffff;
}

[data-theme="dark"] .filter-tab.active {
  background: rgba(96,165,250,0.2);
  border-color: var(--color-accent-light);
  color: var(--color-accent-light);
}

/* ============================================================
   PRESENTATIONS
   ============================================================ */

.presentation-entry {
  display: grid;
  grid-template-columns: 50px 1fr auto auto;
  gap: 0.75rem;
  align-items: baseline;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.93rem;
}

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

.presentation-year {
  font-weight: 700;
  color: var(--color-accent);
  font-size: 0.88rem;
}

.presentation-event {
  color: var(--color-text);
}

.presentation-type {
  color: var(--color-text-light);
  font-size: 0.85rem;
  font-style: italic;
}

/* ============================================================
   DISSERTATION
   ============================================================ */

.dissertation-entry {
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 1rem;
}

.dissertation-description {
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 0.5rem;
}

.dissertation-committee {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 0.5rem;
}

/* ============================================================
   COLLABORATION BANNER
   ============================================================ */

.collaboration-banner {
  background: var(--color-surface);
  border-left: 4px solid var(--color-accent-light);
  padding: 1rem 1.25rem;
  border-radius: 0 8px 8px 0;
  margin-bottom: 2rem;
}

.collaboration-banner p {
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.6;
  margin: 0;
}

/* ============================================================
   TEACHING
   ============================================================ */

.teaching-entry {
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--color-border);
}

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

.teaching-entry h3 {
  font-family: var(--font-body);
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--color-heading);
  margin-bottom: 0.2rem;
  border: none;
  padding: 0;
  margin-top: 0;
}

.course-code {
  font-weight: 400;
  color: var(--color-text-light);
}

.teaching-role {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-accent-light);
  margin-bottom: 0.15rem;
}

.teaching-meta {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 0.4rem;
}

.teaching-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.teaching-description {
  margin-top: 0.4rem;
}

.teaching-description summary {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-accent-light);
  cursor: pointer;
}

.teaching-description p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-top: 0.5rem;
  padding: 0.75rem 1rem;
  background: var(--color-surface);
  border-radius: 6px;
  border-left: 3px solid var(--color-accent-light);
  line-height: 1.7;
}

/* --- Student Evaluations Section --- */
.eval-summary {
  margin-bottom: 2rem;
}

.eval-overall {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.eval-overall .score-big {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-accent);
}

.eval-overall .score-label {
  font-size: 0.95rem;
  color: var(--color-text-light);
}

/* Eval bar charts */
.eval-bars {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}

.eval-bar-row {
  display: grid;
  grid-template-columns: 200px 1fr 40px;
  gap: 0.75rem;
  align-items: center;
  font-size: 0.88rem;
}

.eval-bar-label {
  color: var(--color-text);
  font-weight: 500;
}

.eval-bar-track {
  height: 20px;
  background: var(--color-surface);
  border-radius: 10px;
  overflow: hidden;
  position: relative;
}

.eval-bar-fill {
  height: 100%;
  border-radius: 10px;
  background: linear-gradient(90deg, var(--color-accent-light), var(--color-accent));
  transition: width 0.5s ease;
}

[data-theme="dark"] .eval-bar-fill {
  background: linear-gradient(90deg, rgba(96,165,250,0.6), rgba(96,165,250,0.9));
}

.eval-bar-score {
  font-weight: 700;
  color: var(--color-accent);
  font-size: 0.88rem;
  text-align: right;
}

/* Eval course breakdown */
.eval-course {
  margin-bottom: 1.5rem;
  padding: 1rem 1.25rem;
  background: var(--color-surface);
  border-radius: 8px;
  border-left: 4px solid var(--color-accent-light);
}

.eval-course h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-heading);
  margin-bottom: 0.25rem;
}

.eval-course-meta {
  font-size: 0.82rem;
  color: var(--color-text-light);
  margin-bottom: 0.5rem;
}

.eval-course-score {
  font-weight: 700;
  color: var(--color-accent);
}

/* Eval quotes */
.eval-quotes {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1rem;
}

.eval-quote {
  padding: 1rem 1.25rem;
  background: var(--color-surface);
  border-radius: 8px;
  border-left: 3px solid var(--color-gold);
  font-size: 0.92rem;
  font-style: italic;
  color: var(--color-text);
  line-height: 1.7;
}

.eval-quote-source {
  display: block;
  font-size: 0.82rem;
  color: var(--color-text-light);
  font-style: normal;
  margin-top: 0.4rem;
}

.eval-pdf-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

/* CV of Failure */
.cv-failure {
  padding: 1.25rem;
  background: var(--color-surface);
  border-radius: 8px;
  border-left: 4px solid var(--color-gold);
}

.cv-failure p {
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 0.5rem;
}

.cv-failure-credit {
  font-size: 0.85rem;
  color: var(--color-text-light);
  font-style: italic;
}

/* ============================================================
   AWARDS
   ============================================================ */

.awards-section {
  padding: 2.5rem 0;
  border-top: 1px solid var(--color-border);
}

.awards-section h2 {
  border-bottom-color: var(--color-gold);
}

.award-entry {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 0.75rem;
  align-items: baseline;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.93rem;
}

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

.award-year {
  font-weight: 700;
  color: var(--color-gold);
  font-size: 0.88rem;
}

.award-name {
  color: var(--color-text);
}

/* ============================================================
   MODELS & CODE
   ============================================================ */

.models-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.model-card {
  padding: 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  transition: all 0.2s ease;
  background: var(--color-bg);
}

.model-card:hover {
  border-color: var(--color-accent-light);
  box-shadow: 0 4px 16px rgba(59,111,160,0.1);
  transform: translateY(-2px);
}

[data-theme="dark"] .model-card:hover {
  box-shadow: 0 4px 16px rgba(96,165,250,0.1);
}

.model-type {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-accent-light);
  margin-bottom: 0.4rem;
  background: var(--color-tag-bg);
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
}

.model-card h3 {
  font-size: 1rem;
  margin-bottom: 0.4rem;
  border: none;
  padding: 0;
  margin-top: 0;
}

.model-card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.model-paper {
  font-size: 0.85rem;
  font-style: italic;
  margin-top: 0.5rem;
}

/* ============================================================
   BUTTONS
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.2rem;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: 8px;
  text-decoration: none !important;
  transition: all 0.2s ease;
  border: 1.5px solid transparent;
}

.btn-primary {
  background: var(--color-accent-light);
  color: white;
  border-color: var(--color-accent-light);
}

.btn-primary:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: white;
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--color-accent-light);
  border-color: var(--color-accent-light);
}

.btn-secondary:hover {
  background: var(--color-accent-light);
  color: white;
  text-decoration: none;
}

/* ============================================================
   PROJECT CARDS
   ============================================================ */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
  margin-top: 1rem;
}

.project-card {
  padding: 1.5rem;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  transition: all 0.2s ease;
  background: var(--color-bg);
}

.project-card:hover {
  border-color: var(--color-accent-light);
  box-shadow: 0 4px 16px rgba(59,111,160,0.1);
  transform: translateY(-2px);
}

[data-theme="dark"] .project-card:hover {
  box-shadow: 0 4px 16px rgba(96,165,250,0.1);
}

.project-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-heading);
  margin-bottom: 0.4rem;
  border: none;
  padding: 0;
  margin-top: 0;
}

.project-card h3 a {
  color: var(--color-heading);
  text-decoration: none !important;
}

.project-card h3 a:hover {
  color: var(--color-accent-light);
  text-decoration: none !important;
}

.project-card p {
  font-size: 0.92rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 0.75rem;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
}

.project-tag {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  background: var(--color-tag-bg);
  color: var(--color-tag-text);
  letter-spacing: 0.02em;
}

.project-links {
  display: flex;
  gap: 0.5rem;
}

/* ============================================================
   WRITING ENTRIES
   ============================================================ */

.writing-entry {
  padding: 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  margin-bottom: 1rem;
  transition: all 0.2s ease;
}

.writing-entry:hover {
  border-color: var(--color-accent-light);
  box-shadow: 0 2px 12px rgba(59,111,160,0.08);
}

.writing-entry h3 {
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--color-heading);
  margin-bottom: 0.25rem;
  border: none;
  padding: 0;
  margin-top: 0;
}

.writing-entry .writing-meta {
  font-size: 0.88rem;
  color: var(--color-text-light);
  margin-bottom: 0.4rem;
}

.writing-entry p {
  font-size: 0.92rem;
  color: var(--color-text);
  line-height: 1.6;
}

/* ============================================================
   OUTSIDE PAGE
   ============================================================ */

.outside-placeholder {
  padding: 3rem 0;
  text-align: center;
}

.outside-placeholder p {
  font-size: 1.1rem;
  color: var(--color-text-light);
}

/* ============================================================
   FOOTER
   ============================================================ */

.site-footer {
  padding: 2rem 0;
  border-top: 1px solid var(--color-border);
  text-align: center;
  margin-top: auto;
}

.site-footer p {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

/* ============================================================
   SCROLL TO TOP
   ============================================================ */

.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: calc(var(--sidebar-width) + 1.5rem);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-accent);
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.3s ease;
  pointer-events: none;
  z-index: 99;
}

.scroll-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.scroll-top:hover {
  background: var(--color-accent-light);
  transform: translateY(-2px);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 960px) {
  :root {
    --sidebar-width: 270px;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 16px;
  }

  :root {
    --sidebar-width: 0px;
  }

  /* Switch to column layout */
  .site-layout {
    flex-direction: column;
  }

  /* Hide desktop sidebar */
  .sidebar {
    display: none;
  }

  .main-content {
    margin-right: 0;
  }

  /* Show mobile bar */
  .mobile-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: var(--color-sidebar-bg);
    border-bottom: 1px solid var(--color-sidebar-border);
    position: sticky;
    top: 0;
    z-index: 100;
  }

  .mobile-title {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-heading);
    text-decoration: none !important;
  }

  .mobile-title:hover {
    text-decoration: none !important;
    color: var(--color-accent-light);
  }

  .mobile-bar-right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }

  .theme-toggle-mobile {
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-light);
    padding: 0.5rem;
    border-radius: 6px;
    transition: color 0.15s;
    -webkit-tap-highlight-color: transparent;
  }

  .theme-toggle-mobile:hover {
    color: var(--color-accent-light);
  }

  .nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    gap: 5px;
    -webkit-tap-highlight-color: transparent;
  }

  .nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-text-light);
    transition: 0.25s ease;
    border-radius: 1px;
  }

  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  /* Mobile nav dropdown */
  .mobile-nav {
    display: none;
    position: sticky;
    top: 50px;
    z-index: 99;
    background: var(--color-sidebar-bg);
    border-bottom: 1px solid var(--color-sidebar-border);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    max-height: calc(100vh - 50px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .mobile-nav.open {
    display: block;
  }

  /* Mobile profile card */
  .mobile-profile {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--color-border);
  }

  .mobile-profile-photo {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--color-border);
    flex-shrink: 0;
  }

  .mobile-profile-info {
    min-width: 0;
  }

  .mobile-profile-subtitle {
    font-size: 0.82rem;
    color: var(--color-text-light);
    font-weight: 500;
    margin-bottom: 0.1rem;
  }

  .mobile-profile-affiliation {
    font-size: 0.78rem;
    color: var(--color-text-light);
    line-height: 1.4;
  }

  .mobile-profile-affiliation a {
    color: var(--color-text-light);
    text-decoration: underline;
    text-decoration-color: rgba(100,116,139,0.4);
    text-underline-offset: 2px;
  }

  .mobile-nav ul {
    list-style: none;
    padding: 0.5rem 0.75rem;
  }

  .mobile-nav li a {
    display: block;
    padding: 0.6rem 0.75rem;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-sidebar-text);
    text-decoration: none !important;
    border-radius: 8px;
    transition: all 0.15s;
    -webkit-tap-highlight-color: transparent;
  }

  .mobile-nav li a:hover,
  .mobile-nav li a.active {
    background: var(--color-surface);
    color: var(--color-accent-light);
  }

  /* Mobile social links */
  .mobile-social {
    display: flex;
    gap: 0.4rem;
    justify-content: center;
    padding: 0.75rem 1rem 1rem;
    border-top: 1px solid var(--color-border);
  }

  .mobile-social a {
    color: var(--color-text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 8px;
    transition: all 0.15s;
    -webkit-tap-highlight-color: transparent;
    text-decoration: none !important;
  }

  .mobile-social a:hover {
    color: var(--color-accent-light);
    background: var(--color-surface);
  }

  /* Fix scroll top button position */
  .scroll-top {
    right: 1rem;
    bottom: 1.5rem;
    width: 40px;
    height: 40px;
  }

  /* Sections */
  .about-section {
    padding: 1.5rem 0 1rem;
  }

  .container {
    padding: 0 1rem;
  }

  .page {
    padding: 1.5rem 0 3rem;
  }

  .page-title {
    font-size: 1.6rem;
  }

  .about-section h2,
  .recent-research h2,
  .awards-section h2,
  .models-section h2 {
    font-size: 1.3rem;
  }

  .recent-research,
  .models-section {
    padding: 1.5rem 0;
  }

  /* Papers */
  .paper-title {
    font-size: 0.95rem;
  }

  .paper-links {
    gap: 0.4rem;
  }

  /* Eval bars — keep label and bar inline */
  .eval-bar-row {
    grid-template-columns: 110px 1fr 40px;
    gap: 0.5rem;
  }

  .eval-bar-label {
    font-size: 0.78rem;
  }

  .eval-bar-track {
    height: 16px;
  }

  .eval-bar-score {
    font-size: 0.8rem;
  }

  .eval-course {
    padding: 0.75rem 1rem;
  }

  .eval-quote {
    padding: 0.75rem 1rem;
    font-size: 0.88rem;
  }

  /* Grids to single column */
  .presentation-entry {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }

  .models-grid {
    grid-template-columns: 1fr;
  }

  .award-entry {
    grid-template-columns: 60px 1fr;
    gap: 0.5rem;
    font-size: 0.88rem;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  /* Filter tabs — horizontal scroll */
  .filter-tabs {
    gap: 0.35rem;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 0.75rem;
    scrollbar-width: none;
  }

  .filter-tabs::-webkit-scrollbar {
    display: none;
  }

  .filter-tab {
    font-size: 0.8rem;
    padding: 0.4rem 0.85rem;
    white-space: nowrap;
    flex-shrink: 0;
  }

  /* Buttons */
  .home-contact {
    flex-direction: column;
    gap: 0.5rem;
  }

  .btn {
    justify-content: center;
    font-size: 0.85rem;
    padding: 0.6rem 1rem;
  }

  /* Model & project cards */
  .model-card {
    padding: 1rem;
  }

  .project-card {
    padding: 1.25rem;
  }

  /* Dissertation figure */
  .paper-figure img {
    border-radius: 4px;
  }

  /* Collaboration banner */
  .collaboration-banner {
    padding: 0.75rem 1rem;
    margin-bottom: 1.5rem;
  }

  .collaboration-banner p {
    font-size: 0.9rem;
  }

  /* Teaching */
  .teaching-entry h3 {
    font-size: 0.95rem;
  }

  .eval-pdf-links {
    gap: 0.35rem;
  }
}

@media (max-width: 380px) {
  /* Very small phones */
  .eval-bar-row {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }

  .eval-bar-track {
    height: 14px;
  }

  .mobile-profile {
    gap: 0.75rem;
  }

  .mobile-profile-photo {
    width: 50px;
    height: 50px;
  }
}

/* ============================================================
   PRINT
   ============================================================ */

@media print {
  .sidebar,
  .mobile-bar,
  .mobile-nav,
  .site-footer,
  .nav-toggle,
  .theme-toggle,
  .scroll-top {
    display: none !important;
  }

  .main-content {
    margin-right: 0;
  }

  body {
    font-size: 12pt;
    color: black;
    background: white;
  }

  a {
    color: black;
    text-decoration: underline;
  }
}