body {
  margin: 0;
  padding: 0;
  font-family: 'JetBrains Mono', monospace;
  color: var(--text);
  background: var(--bg);
  transition: background 500ms ease-in-out, color 1000ms ease-in-out;
}

ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
}

a {
  color: currentColor;
  text-decoration: none;
}

header {
  padding: 1em;
  clip-path: polygon(50% 0%, 100% 0, 100% 65%, 50% 100%, 0 65%, 0 0);
  background: var(--bg-nav);
  margin-bottom: 1em;
  padding-bottom: 3.5em;
  text-align: center;
}

main {
  padding: 2rem 1rem;
  max-width: 800px;
  margin: 0 auto;
}

.logo {
  margin: 2em 0 0;
  width: 15vw;
  height: 15vw;
  max-width: 100%;
}

/* Navbar */
.navbar {
  height: 70px;
  width: 100%;
  background: var(--bg-nav);
  color: var(--text);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar-nav {
  display: flex;
  align-items: center;
  justify-content: space-evenly;
  height: 100%;
  flex-wrap: wrap;
}

.nav-item {
  cursor: pointer;
  padding: 0.5rem;
  position: relative;
}

.dropdown {
  position: absolute;
  width: 200px;
  opacity: 0;
  z-index: 2;
  background: var(--bg-dropdown);
  border-top: 2px solid var(--border-color);
  border-bottom-right-radius: 8px;
  border-bottom-left-radius: 8px;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  margin-top: 0.5rem;
  padding: 0.5rem 0;
  box-shadow: rgba(2, 8, 20, 0.1) 0px 0.175em 0.5em;
  transform: translateX(-50%);
  left: 50%;
  transition: opacity .15s ease-out;
  pointer-events: none;
}

.has-dropdown:focus-within .dropdown,
.has-dropdown:hover .dropdown {
  opacity: 1;
  pointer-events: auto;
}

.dropdown-item {
  width: 100%;
}

.dropdown-item a {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 0.75rem 1rem;
  font-weight: bold;
  transition: background 0.2s ease;
  cursor: pointer;
}

.dropdown-item a:hover {
  background: var(--dropdown-hover);
}

.dropdown-item a::before {
  content: ' ';
  border: 2px solid var(--border-color);
  border-radius: 50%;
  width: 1.5rem;
  height: 1.5rem;
  display: inline-block;
  margin-right: 10px;
  flex-shrink: 0;
}

/* Page Title */
.page-title {
  text-align: center;
  font-size: 2rem;
  font-weight: 600;
  margin: 2rem 0;
  color: var(--text);
}

.page-subtitle {
  text-align: center;
  font-size: 1rem;
  margin-bottom: 3rem;
  color: var(--text);
}

/* Team Member Cards */
.team-section {
  margin: 3rem 0;
}

.team-member {
  background: var(--card-bg);
  padding: 2rem;
  margin: 2rem 0;
  border-radius: 8px;
  text-align: center;
  box-shadow: 0 2px 10px var(--shadow);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.team-member h3 {
  color: var(--accent);
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.team-member p {
  color: var(--card-text);
  line-height: 1.6;
  font-size: 0.9rem;
  text-align: justify;
  margin-bottom: 0px;
}

.team-member img {
  width: 350px;
  height: 350px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 5px;
  margin: 10px 0;
}

.team-photo {
  width: 100%;
  max-width: 800px;
  margin: 2rem auto;
  display: block;
  border-radius: 8px;
}

/* Section Titles */
.section-title {
  text-align: center;
  font-size: 1.5rem;
  font-weight: 600;
  margin: 3rem 0 2rem 0;
  color: var(--text);
}

/* Content Sections */
.content-section {
  background: var(--card-bg);
  padding: 2rem;
  margin: 2rem 0;
  border-radius: 8px;
  box-shadow: 0 2px 10px var(--shadow);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.content-section p {
  color: var(--card-text);
  line-height: 1.8;
  margin-bottom: 1rem;
}

.content-section a {
  color: var(--link-color);
  text-decoration: underline;
}

/* Timeline */
.timeline {
  background: var(--card-bg);
  padding: 2rem;
  margin: 2rem 0;
  border-radius: 8px;
  box-shadow: 0 2px 10px var(--shadow);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

/* Meetings & Diary */
.list-section {
  background: var(--card-bg);
  padding: 2rem;
  margin: 2rem 0;
  border-radius: 8px;
  box-shadow: 0 2px 10px var(--shadow);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

/* Expandable Items */
.expandable-item {
  border: 1px solid var(--expandable-border);
  border-radius: 6px;
  margin: 1rem 0;
  overflow: hidden;
  transition: all 0.3s ease;
}

.expandable-header {
  padding: 1rem 1.5rem;
  background: var(--expandable-header-bg);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  transition: background 0.2s ease;
}

.expandable-header:hover {
  background: var(--expandable-header-hover);
}

.expandable-title {
  font-weight: 600;
  color: var(--card-text);
  margin: 0;
}

.expandable-icon {
  font-size: 1.2rem;
  color: var(--card-text-secondary);
  transition: transform 0.3s ease;
}

.expandable-item.active .expandable-icon {
  transform: rotate(180deg);
}

.expandable-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s ease, padding 0.3s ease;
  padding: 0 1.5rem;
  background: var(--card-bg);
}

.expandable-item.active .expandable-content {
  max-height: none;
  padding: 1.5rem;
  border-top: 1px solid var(--expandable-border);
  overflow: visible;
}

.expandable-content p {
  color: var(--card-text);
  line-height: 1.6;
  margin: 0.5rem 0;
}

/* Diary button style */
.diary-button {
  display: inline-block;
  background: var(--accent);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 6px;
  font-weight: bold;
  text-decoration: none;
  transition: background 0.3s ease, transform 0.2s ease;
}

.diary-button:hover {
  background: #c0392b;
  transform: translateY(-2px);
  text-decoration: none;
}

/* IMPS Hover Tooltip */
.imps-hover {
  cursor: help;
  border-bottom: 2px dotted var(--text);
  position: relative;
  display: inline-block;
}

.imps-hover::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--card-bg);
  color: var(--card-text);
  padding: 0.5rem 1rem;
  border-radius: 6px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  margin-bottom: 0.5rem;
  box-shadow: 0 2px 10px var(--shadow);
  font-size: 0.9rem;
  border: 1px solid var(--expandable-border);
  z-index: 1000;
}

.imps-hover:hover::after {
  opacity: 1;
}

/* Week Images Grid */
.week-images {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
  width: 100%;
  padding: 0.5rem 0;
}

.image-container {
  position: relative;
  width: 100%;
  height: 200px;
  overflow: hidden;
  border-radius: 8px;
  cursor: pointer;
  border: 2px solid var(--expandable-border);
  box-shadow: 0 2px 8px var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.image-container:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px var(--shadow);
}

.week-images img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  transition: filter 0.3s ease;
}

.image-container:hover img {
  filter: brightness(0.7);
}

.image-title {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
  color: white;
  padding: 2rem 1rem 0.75rem 1rem;
  font-size: 0.9rem;
  font-weight: 500;
  opacity: 0;
  transform: translateY(100%);
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
}

.image-container:hover .image-title {
  opacity: 1;
  transform: translateY(0);
}

.magnify-icon {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  width: 32px;
  height: 32px;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.8);
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
}

.image-container:hover .magnify-icon {
  opacity: 1;
  transform: scale(1);
}

.magnify-icon::before {
  content: '🔍';
  font-size: 18px;
}

.expandable-content ul {
  margin: 1rem 0;
  padding-left: 2rem;
  color: var(--card-text);
}

.expandable-content ul li {
  margin: 0.5rem 0;
  line-height: 1.6;
}

.expandable-content strong {
  color: var(--accent);
}

.expandable-content > p {
  margin: 0.75rem 0;
}

/* Image Modal */
.modal {
  display: none;
  position: fixed;
  z-index: 10000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.95);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.modal.show {
  display: flex;
}

.modal-content {
  max-width: 95%;
  max-height: 95%;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 4px;
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 40px;
  color: #f1f1f1;
  font-size: 40px;
  font-weight: bold;
  cursor: pointer;
  z-index: 10001;
  text-shadow: 0 0 10px rgba(0,0,0,0.5);
}

.modal-close:hover {
  color: #fff;
}

/* Themes */
:root {
  --gray0: #f8f8f8;
  --gray1: #dbe1e8;
  --gray2: #b2becd;
  --gray3: #6c7983;
  --gray4: #454e56;
  --gray5: #2a2e35;
  --gray6: #12181b;
  --blue: #0084a5;
  --purple: #a82dd1;
  --yellow: #fff565;
}

.light {
  --bg: #e8e8e8;
  --bg-nav: linear-gradient(to right, var(--gray1), var(--gray3));
  --bg-dropdown: var(--gray0);
  --text: var(--gray6);
  --border-color: var(--blue);
  --bg-solar: var(--yellow);
  --card-bg: #ffffff;
  --card-text: #333333;
  --card-text-secondary: #666666;
  --shadow: rgba(0,0,0,0.1);
  --accent: #e74c3c;
  --link-color: #3498db;
  --expandable-border: #ddd;
  --expandable-header-bg: #f8f9fa;
  --expandable-header-hover: #e9ecef;
  --dropdown-hover: rgba(0,0,0,0.05);
}

.dark {
  --bg: var(--gray5);
  --bg-nav: linear-gradient(to right, var(--gray5), var(--gray6));
  --bg-dropdown: var(--gray6);
  --text: var(--gray0);
  --border-color: var(--purple);
  --bg-solar: var(--blue);
  --card-bg: var(--gray4);
  --card-text: var(--gray0);
  --card-text-secondary: var(--gray2);
  --shadow: rgba(0,0,0,0.3);
  --accent: #e74c3c;
  --link-color: #5dade2;
  --expandable-border: var(--gray5);
  --expandable-header-bg: var(--gray5);
  --expandable-header-hover: var(--gray6);
  --dropdown-hover: rgba(255,255,255,0.05);
}

.solar {
  --gray0: #fbffd4;
  --gray1: #f7f8d0;
  --gray2: #b6f880;
  --gray3: #5ec72d;
  --gray4: #006d7e;
  --gray5: #005368;
  --gray6: #003d4c;
}

#dark::before {
  background: #2a2e35;
}

#light::before {
  background: #ffffff;
}

#solar::before {
  background: var(--bg-solar);
}

@keyframes logoGlow {
  0%, 100% {
    filter: 
      drop-shadow(0 0 10px rgba(231, 76, 60, 0.6))
      drop-shadow(0 0 20px rgba(231, 76, 60, 0.4));
  }
  50% {
    filter: 
      drop-shadow(0 0 25px rgba(231, 76, 60, 0.9))
      drop-shadow(0 0 40px rgba(231, 76, 60, 0.7))
      drop-shadow(0 0 60px rgba(231, 76, 60, 0.4));
  }
}

.logo {
  animation: logoFloat 1s ease-out;
}

.logo:hover {
  animation: logoGlow 2s ease-in-out infinite;
}

/* Responsive */
@media (max-width: 768px) {
  .navbar-nav {
    font-size: 0.9rem;
  }
  
  .page-title {
    font-size: 1.5rem;
  }

  .dropdown {
    width: 150px;
  }

  .week-images {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .modal-close {
    top: 10px;
    right: 20px;
    font-size: 30px;
  }
}