/* ===== Shared navigation (light pages) ===== */
.page-light nav,
.page-contact nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #347fda;
  padding: 1em 2em;
  border-bottom: 1px solid #ccc;
}

.page-light nav .brand,
.page-light nav .nav-left,
.page-contact nav .brand {
  font-weight: bold;
  font-size: 1.2em;
  color: white;
}

.page-light nav .nav-links a,
.page-light nav .links a,
.page-light .nav-right a,
.page-contact nav .nav-links a {
  margin-left: 20px;
  text-decoration: none;
  color: white;
  font-size: 1em;
}

.page-light .nav-right a:hover {
  color: #cce6ff;
}

html.page-light body,
html.page-contact body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f9f9f9;
  line-height: 1.6;
  color: #333;
}

.page-light .container,
.page-contact .container {
  max-width: 1000px;
  margin: auto;
  padding: 2em;
}

.page-light h2,
.page-contact h2 {
  border-bottom: 2px solid #ccc;
  padding-bottom: 0.2em;
  margin-top: 1em;
}

/* ===== About page ===== */
.page-about * {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html.page-about,
html.page-about body {
  height: 100%;
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
  background: url('../img/backgrounds/about_background.jpg') no-repeat center center/cover;
  color: #fff;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.7);
  overflow-x: hidden;
}

.page-about .overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.65);
  z-index: 0;
}

.page-about nav {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #007acc;
  color: white;
  padding: 1em 2em;
}

.page-about nav .name {
  font-weight: bold;
  font-size: 1.2em;
}

.page-about nav .links a {
  margin-left: 20px;
  color: white;
  text-decoration: none;
}

.page-about .container {
  position: relative;
  z-index: 1;
  max-width: 1000px;
  margin: auto;
  padding: 3em 2em;
}

.page-about h2 {
  border-bottom: 2px solid #ccc;
  padding-bottom: 0.2em;
  margin-bottom: 1em;
  color: #fff;
}

.page-about .intro {
  font-size: 1.1em;
  margin-bottom: 2em;
  line-height: 1.8;
}

.page-about .photo-grid {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.5em;
  flex-wrap: nowrap;
  margin-top: 2em;
  margin-bottom: 2em;
}

.page-about .photo-grid img {
  width: 240px;
  height: 150px;
  object-fit: cover;
  border-radius: 10px;
  border: 2px solid #ccc;
}

.page-about .paragraphs p {
  line-height: 1.8;
  margin-bottom: 1.5em;
  font-size: 1.05em;
}

@media (max-width: 750px) {
  .page-about .photo-grid {
    flex-wrap: wrap;
  }
}

/* ===== Education page ===== */
.page-education .container {
  max-width: 900px;
}

.page-education h2 {
  margin-top: 2em;
}

.page-education .course-link {
  display: inline-block;
  margin-top: 0.5em;
  padding: 6px 12px;
  background-color: #007acc;
  color: white;
  text-decoration: none;
  border-radius: 5px;
}

.page-education .course-link:hover {
  background-color: #005c99;
}

.page-education .research-section {
  display: flex;
  align-items: flex-start;
  gap: 20px;
}

.page-education .research-section ul {
  margin-top: 0;
}

.page-education .research-img {
  max-width: 270px;
  height: auto;
}

.page-education .award-img {
  width: 50%;
  max-width: 500px;
  border-radius: 10px;
  margin-top: 10px;
}

/* ===== Experience page ===== */
.page-experience h2 {
  font-size: 1.5em;
  margin-bottom: 1em;
}

.page-experience ul {
  padding-left: 0;
  list-style: none;
}

.page-experience li {
  margin-bottom: 2em;
}

.page-experience .experience-entry {
  display: flex;
  align-items: flex-start;
  gap: 20px;
}

.page-experience .experience-entry img {
  width: 250px;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
  flex-shrink: 0;
  cursor: zoom-in;
  transition: transform 0.3s ease;
}

.page-experience .zoomed {
  transform: scale(2);
  z-index: 100;
  position: relative;
}

.page-experience .experience-text strong {
  display: block;
  font-weight: bold;
  font-size: 1em;
  margin-bottom: 0.3em;
  color: #000;
}

.page-experience .experience-text span {
  font-weight: normal;
  color: #555;
}

/* ===== Projects page ===== */
.page-projects .navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1em 2em;
  background-color: #347fda;
  border-bottom: 1px solid #ccc;
}

.page-projects .nav-left {
  font-weight: bold;
  font-size: 1.3em;
  color: white;
}

.page-projects h2 {
  font-size: 2em;
  margin-bottom: 1em;
  border-bottom: 2px solid #ccc;
  padding-bottom: 0.3em;
}

.page-projects .project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2em;
}

.page-projects .project-card {
  background-color: white;
  padding: 1.5em;
  border: 1px solid #ddd;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  transition: transform 0.2s ease;
}

.page-projects .project-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
}

.page-projects .project-title {
  color: #007acc;
  font-weight: bold;
  margin-bottom: 0.5em;
  font-size: 1.2em;
}

.page-projects .project-desc {
  font-size: 0.95em;
  color: #555;
}

.page-projects .project-tag {
  font-style: italic;
  font-size: 0.9em;
  color: #888;
  margin-top: 0.5em;
}

.page-projects .project-links {
  margin-top: 1em;
}

.page-projects .project-links a {
  display: inline-block;
  margin-right: 10px;
  padding: 6px 12px;
  background-color: #007acc;
  color: white;
  text-decoration: none;
  border-radius: 5px;
  font-size: 0.9em;
}

.page-projects .project-img {
  width: 100%;
  max-width: 100%;
  height: 180px;
  object-fit: contain;
  border-radius: 8px;
  margin: 0.6em 0 0.9em;
  border: 1px solid #eee;
  background-color: #fafafa;
  display: block;
}

.page-projects .project-links a:hover {
  background-color: #005c99;
}

/* ===== Contact page ===== */
.page-contact h2 {
  text-align: center;
}

.page-contact .contact-wrapper {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 40px;
  margin-top: 2em;
}

.page-contact .contact-form {
  flex: 1;
  min-width: 280px;
}

.page-contact .contact-form input,
.page-contact .contact-form textarea {
  width: 100%;
  padding: 10px;
  margin-bottom: 1em;
  border: 1px solid #ccc;
  border-radius: 5px;
  font-size: 1em;
}

.page-contact .contact-form textarea {
  height: 140px;
  resize: vertical;
}

.page-contact .contact-form button {
  padding: 10px 20px;
  background-color: #347fda;
  color: white;
  border: none;
  border-radius: 5px;
  font-size: 1em;
  cursor: pointer;
}

.page-contact .contact-form button:hover {
  background-color: #245bb5;
}

.page-contact .button-links {
  flex: 0 0 200px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding-top: 10px;
}

.page-contact .icon-link img {
  height: 40px;
  width: auto;
  margin: 10px;
  transition: transform 0.2s ease;
}

.page-contact .icon-link img:hover {
  transform: scale(1.1);
}

.page-contact .note {
  text-align: center;
  margin-top: 2em;
  font-size: 1.2em;
  font-weight: 500;
  color: #333;
}

.page-contact .success-message {
  display: none;
  color: green;
  font-weight: bold;
  text-align: center;
  margin-top: 1em;
}

.page-contact .hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ===== Home page ===== */
html.page-home body {
  font-family: 'Orbitron', sans-serif;
  text-align: center;
  background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
  padding: 2em;
  color: white;
}

.page-home img.hero-pcb {
  width: 960px;
  height: 560px;
  object-fit: cover;
  border: 2px solid #ccc;
  border-radius: 10px;
}

.page-home h1 {
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 1em;
}

.page-home area {
  cursor: pointer;
}

.page-home .highlight {
  position: absolute;
  pointer-events: none;
  border: 2px solid #00ffff;
  border-radius: 8px;
  box-shadow: 0 0 8px #00ffff;
  display: none;
}

.page-home .tagline {
  font-family: Arial, sans-serif;
  font-weight: 400;
  font-size: 1.1em;
  color: #e0e0e0;
}

/* ===== Gallery hub ===== */
html.page-gallery-hub body {
  font-family: 'Orbitron', sans-serif;
  background: linear-gradient(180deg, #0f172a, #1e293b);
  color: white;
  margin: 0;
  padding: 2em;
  text-align: center;
}

.page-gallery-hub h1 {
  font-size: 3em;
  margin-bottom: 1.5em;
}

.page-gallery-hub .gallery-grid {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 3em;
  margin-top: 2em;
}

.page-gallery-hub .gallery-card {
  background-color: #1e293b;
  border: 2px solid #334155;
  border-radius: 20px;
  width: 380px;
  padding: 2em;
  text-decoration: none;
  color: white;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-gallery-hub .gallery-card:hover {
  transform: scale(1.08);
  box-shadow: 0 0 30px #38bdf8;
  border-color: #38bdf8;
}

.page-gallery-hub .gallery-card h2 {
  margin-top: 1em;
  font-size: 2em;
}

.page-gallery-hub .gallery-card img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  border-radius: 14px;
}

.page-gallery-hub footer {
  margin-top: 5em;
  font-size: 0.9em;
  color: #94a3b8;
}

/* ===== Dark gallery subpages ===== */
html.page-gallery-dark body {
  font-family: 'Orbitron', sans-serif;
  background: linear-gradient(180deg, #0f172a, #1e293b);
  color: white;
  margin: 0;
  padding: 2em;
  text-align: center;
}

.page-gallery-dark h1 {
  font-size: 2.5em;
  margin-bottom: 0.5em;
}

.page-gallery-dark h1.travel-title {
  margin-bottom: 1em;
  color: #38bdf8;
}

.page-gallery-dark .description {
  font-family: 'Inter', sans-serif;
  font-size: 1.1em;
  max-width: 800px;
  margin: 0 auto 1em auto;
  color: #cbd5e1;
  line-height: 1.8;
}

.page-gallery-dark .instruction {
  font-family: 'Inter', sans-serif;
  font-size: 0.95em;
  color: #94a3b8;
  margin-bottom: 2.5em;
}

.page-gallery-dark .grid {
  display: flex;
  flex-wrap: wrap;
  gap: 2em;
  justify-content: center;
}

.page-gallery-dark .grid img,
.page-gallery-dark .grid video {
  width: 300px;
  height: 200px;
  object-fit: cover;
  border-radius: 12px;
  border: 2px solid #334155;
  transition: transform 0.3s ease;
  cursor: pointer;
}

.page-gallery-dark .grid img.thumb {
  background: #0b1220;
}

.page-gallery-dark .grid img:hover,
.page-gallery-dark .grid video:hover,
.page-gallery-dark .grid img.thumb:hover {
  transform: scale(1.05);
  box-shadow: 0 0 12px #38bdf8;
}

.page-gallery-dark .grid a {
  display: inline-block;
  border-radius: 12px;
  overflow: hidden;
  border: 2px solid #334155;
  transition: transform 0.3s ease;
}

.page-gallery-dark .grid a:hover {
  transform: scale(1.05);
  box-shadow: 0 0 12px #38bdf8;
}

.page-gallery-dark .grid a img {
  width: 300px;
  height: 200px;
  object-fit: cover;
  display: block;
  border: none;
  border-radius: 0;
}

.page-gallery-dark .section-heading {
  font-size: 2em;
  color: #38bdf8;
}

.page-gallery-dark .map-section {
  margin-bottom: 3em;
}

.page-gallery-dark .map-iframe {
  border-radius: 12px;
  border: 2px solid #334155;
}

.page-gallery-dark .back-link {
  margin-top: 2em;
  font-family: 'Inter', sans-serif;
  font-size: 1em;
  display: inline-block;
  color: #60a5fa;
  text-decoration: none;
}

.page-gallery-dark .back-link:hover {
  text-decoration: underline;
}

.page-gallery-dark .modal {
  display: none;
  position: fixed;
  z-index: 999;
  padding-top: 5%;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.9);
}

.page-gallery-dark .modal-content,
.page-gallery-dark .modal-frame {
  margin: auto;
  display: block;
  border-radius: 10px;
  box-shadow: 0 0 30px #38bdf8;
  transition: 0.3s;
}

.page-gallery-dark .modal-content {
  max-width: 90%;
  max-height: 85vh;
  cursor: zoom-out;
}

.page-gallery-dark .modal-frame {
  width: min(1000px, 92%);
  height: min(600px, 80vh);
  border: none;
  border-radius: 12px;
  background: #000;
}

.page-gallery-dark .close-hint {
  font-family: 'Inter', sans-serif;
  color: #94a3b8;
  margin-top: 14px;
  font-size: 0.95em;
}

/* ===== Coursework pages ===== */
html.page-coursework body {
  font-family: 'Inter', sans-serif;
  background: linear-gradient(180deg, #0f172a, #1e293b);
  color: white;
  text-align: center;
  margin: 0;
  padding: 2em;
}

.page-coursework h1 {
  font-size: 2.5em;
  margin-bottom: 0.5em;
}

.page-coursework h2 {
  margin-top: 2em;
  color: #facc15;
  font-weight: 600;
}

.page-coursework .semester {
  background-color: rgba(255, 255, 255, 0.05);
  color: white;
  width: 80%;
  margin: 1em auto;
  border-radius: 10px;
  padding: 1em;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.page-coursework .course {
  padding: 0.3em 0;
  border-bottom: 1px solid #334155;
}

.page-coursework .course:last-child {
  border-bottom: none;
}

.page-coursework b {
  color: #38bdf8;
}

.page-coursework .highlight-yellow {
  color: #facc15;
}

.page-coursework .highlight-blue {
  color: #3b82f6;
}

/* ===== US Map (Leaflet) ===== */
html.page-us-map,
html.page-us-map body {
  height: 100%;
  margin: 0;
  background-color: #0f172a;
}

.page-us-map #us-map {
  height: 100%;
  width: 100%;
}

.page-us-map .leaflet-container {
  font-family: 'Inter', sans-serif;
}

.page-us-map .custom-label {
  font-weight: bold;
  font-size: 0.85rem;
  background: white;
  padding: 2px 6px;
  border-radius: 6px;
  color: black;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}