/*
  Photography Portfolio Style
  Clean, minimal, single-column layout
*/

@import url("https://fonts.googleapis.com/css2?family=Parisienne&family=Playfair+Display:ital,wght@0,400;0,500;0,600;1,400&family=Inter:wght@300;400;500&display=swap");
@import url("fontawesome-all.min.css");

/* ========== CSS Variables ========== */
:root {
  --font-logo: "Parisienne", cursive;
  --font-display: "Playfair Display", serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --bg: #fdfdfc;
  --text: #111111;
  --muted: #6f6f6f;
  --border: #e6e6e4;
  --accent: #2f2f2f;
  --container-width: 900px;
  --section-padding: 5rem;
}

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

/* ========== Base ========== */
html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

/* ========== Typography ========== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: 0.01em;
  line-height: 1.3;
  margin-bottom: 1rem;
  color: var(--text);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 1.75rem; margin-bottom: 1.5rem; }
h3 { font-size: 1.25rem; }

p {
  margin-bottom: 1.5rem;
}

strong, b {
  font-weight: 500;
  color: var(--text);
}

a {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

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

ul, ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.5rem;
  line-height: 1.6;
}

/* ========== Layout ========== */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* ========== Navigation ========== */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(253, 253, 252, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

nav .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

nav .logo {
  font-family: var(--font-logo);
  font-size: 2.5rem;
  font-weight: 400;
  border-bottom: none;
  margin-left: -4.5rem;
}

nav .nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

nav .nav-links a {
  font-size: 0.9rem;
  color: var(--muted);
  letter-spacing: 0.02em;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
}

nav .nav-links a:hover {
  color: var(--text);
  border-bottom-color: var(--text);
}

/* ========== Hero Section ========== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 70px;
}

.hero-content {
  max-width: 700px;
}

.hero .avatar {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 2rem;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.hero .subtitle {
  font-size: 1.1rem;
  color: var(--muted);
  font-weight: 300;
}

/* ========== Sections ========== */
section {
  padding: var(--section-padding) 0;
}

section:not(:last-child) {
  border-bottom: 1px solid var(--border);
}

/* ========== About ========== */
.about p {
  font-size: 1.05rem;
  max-width: 700px;
}

.highlight {
  background: linear-gradient(transparent 60%, #fff3cd 60%);
  padding: 0 4px;
}

/* ========== Tables ========== */
.table-wrapper {
  overflow-x: auto;
  margin-bottom: 2rem;
}

table {
  width: 100%;
  border-collapse: collapse;
}

thead {
  border-bottom: 1px solid var(--border);
}

th {
  text-align: left;
  font-weight: 500;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 0.75rem;
  letter-spacing: 0.02em;
}

td {
  padding: 1rem 0.75rem;
  vertical-align: top;
  border-bottom: 1px solid var(--border);
}

tbody tr:last-child td {
  border-bottom: none;
}

/* ========== Publications ========== */
.publication-item {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 2rem;
  margin-bottom: 3rem;
  align-items: start;
}

.publication-item > a {
  display: block;
  border-bottom: none;
  position: relative;
  overflow: hidden;
}

.publication-item > a::after {
  content: 'View Paper';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0,0,0,0.7);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-size: 0.9rem;
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 2;
}

.publication-item > a:hover::after {
  opacity: 1;
}

.publication-item > a::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0);
  border-radius: 12px;
  transition: background 0.3s ease;
  z-index: 1;
}

.publication-item > a:hover::before {
  background: rgba(0,0,0,0.15);
}

.publication-item .thumb {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.publication-item:hover .thumb {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}

.publication-item .info h3 {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.publication-item .info .authors {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 0.25rem;
}

.publication-item .info .venue {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 0.75rem;
}

.publication-item .info .links a {
  font-size: 0.85rem;
  margin-right: 1rem;
  color: var(--muted);
}

.publication-item .info .links a:hover {
  color: var(--text);
}

.publication-item .badge {
  display: inline-block;
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  background: var(--text);
  color: var(--bg);
  border-radius: 2px;
  margin-bottom: 0.5rem;
}

/* ========== Skills / Lists ========== */
.skills-list {
  list-style: none;
  padding: 0;
}

.skills-list li {
  margin-bottom: 0.75rem;
}

.skills-list li b {
  display: inline-block;
  min-width: 180px;
}

/* ========== Works Grid (Home) ========== */
.works {
  padding: 4rem 0 6rem;
}

.works h2 {
  text-align: center;
  margin-bottom: 3rem;
}

.works .container {
  max-width: 1100px;
  overflow: hidden;
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.work-item {
  display: block;
  border-bottom: none;
}

.work-item img {
  width: 100%;
  max-width: 100%;
  aspect-ratio: 16/9;
  object-fit: contain;
  background: var(--bg);
  border-radius: 12px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.work-item:hover img {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}

.work-item .work-info {
  padding: 0.4rem 0;
}

.work-item .work-title {
  display: block;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text);
}

.work-item .work-venue {
  display: block;
  font-size: 0.9rem;
  color: var(--muted);
}

.work-item-iccp img {
  object-fit: cover;
  object-position: center 25%;
}

.work-card {
  position: relative;
  overflow: hidden;
  display: block;
  border-bottom: none;
  aspect-ratio: 16/10;
}

.work-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease, opacity 0.3s ease;
}

.work-card:hover img {
  transform: scale(1.03);
  opacity: 0.9;
}

.work-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.5rem 1rem;
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  color: #fff;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.work-card:hover .work-overlay {
  opacity: 1;
}

.work-title {
  display: block;
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.work-venue {
  display: block;
  font-size: 0.8rem;
  opacity: 0.8;
}

.view-all {
  text-align: center;
  margin-top: 2rem;
}

.view-all a {
  color: var(--muted);
  font-size: 0.95rem;
}

.view-all a:hover {
  color: var(--text);
}

/* ========== Page Content ========== */
.page-content {
  padding-top: calc(70px + 4rem);
  padding-bottom: 4rem;
  min-height: calc(100vh - 200px);
}

.page-content h1 {
  font-size: 2.5rem;
  margin-bottom: 2rem;
}

.page-content h2 {
  margin-top: 3rem;
}

.page-content h2:first-of-type {
  margin-top: 0;
}

/* ========== About Layout ========== */
.container-narrow {
  max-width: 700px;
}

.about-page {
  text-align: center;
}

.about-hero {
  margin-bottom: 3rem;
}

.about-hero img {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  object-fit: cover;
}

.about-body {
  text-align: left;
}

.about-body h1 {
  text-align: center;
  margin-bottom: 1.5rem;
}

.about-lead {
  font-size: 1.15rem;
  color: var(--text);
  line-height: 1.8;
}

.about-cta {
  margin-top: 2rem;
  text-align: center;
}

/* ========== CV Section ========== */
.cv-section {
  margin-bottom: 3rem;
}

.cv-section h2 {
  font-size: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.5rem;
}

.cv-item {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 2rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.cv-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.cv-date {
  font-size: 0.9rem;
  color: var(--muted);
}

.cv-details strong {
  display: block;
  margin-bottom: 0.25rem;
}

.cv-details p {
  margin-bottom: 0.25rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.cv-desc {
  font-size: 0.9rem;
  font-style: italic;
}

/* ========== Contact Page ========== */
.contact-page h1 {
  margin-bottom: 3rem;
}

.contact-grid {
  display: grid;
  gap: 2rem;
  margin-bottom: 3rem;
}

.contact-item {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

.contact-icon {
  font-size: 1.5rem;
  color: var(--muted);
  width: 40px;
  text-align: center;
}

.contact-item h3 {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.contact-item p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.social-links {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.social-links h3 {
  font-size: 1rem;
  margin-bottom: 1rem;
}

.social-icons {
  display: flex;
  gap: 1.5rem;
}

.social-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.social-link span:first-child {
  font-size: 1.25rem;
}

.social-link:hover {
  color: var(--text);
}

/* ========== Active Nav ========== */
nav .nav-links a.active {
  color: var(--text);
  border-bottom-color: var(--text);
}

/* ========== Contact ========== */
.contact-info {
  list-style: none;
  padding: 0;
}

.contact-info li {
  margin-bottom: 1.5rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.contact-info .icon {
  color: var(--muted);
  width: 20px;
  text-align: center;
}

/* ========== Footer ========== */
footer {
  padding: 3rem 0;
  text-align: center;
  border-top: 1px solid var(--border);
}

footer .icons {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
  list-style: none;
  padding: 0;
}

footer .icons a {
  color: var(--muted);
  font-size: 1.25rem;
  border-bottom: none;
  transition: color 0.2s ease;
}

footer .icons a:hover {
  color: var(--text);
}

footer .copyright {
  font-size: 0.85rem;
  color: var(--muted);
}

footer .copyright a {
  color: var(--muted);
}

/* ========== Responsive ========== */
@media (max-width: 768px) {
  :root {
    --section-padding: 3rem;
  }

  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }

  .hero h1 {
    font-size: 2.25rem;
  }

  .hero .avatar {
    width: 120px;
    height: 120px;
  }

  nav .nav-links {
    gap: 1rem;
  }

  nav .nav-links a {
    font-size: 0.8rem;
  }

  .publication-item {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .publication-item .thumb {
    max-width: 250px;
  }

  table, thead, tbody, th, td, tr {
    display: block;
  }

  thead {
    display: none;
  }

  td {
    padding: 0.5rem 0;
    border: none;
  }

  tr {
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
  }

  .works-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }

  .cv-item {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .cv-date {
    font-size: 0.85rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1.25rem;
  }

  nav .logo {
    font-size: 1rem;
  }

  nav .nav-links {
    gap: 0.75rem;
  }

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