/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: 'Poppins', sans-serif;
  background: linear-gradient(135deg, #1A3771, #2D5D98);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

/* App Container */
.app-container {
  width: 100%;
  max-width: 1200px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  margin-top: 80px; /* Reduced from 120px for a tighter header */
}

/* Header Styling */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  background: #fff;
  border-bottom: 1px solid #ddd;
}

/* Header Top Row */
.header-top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 5px 20px; /* Reduced vertical padding */
}

/* .header-left: logo + selected university name side-by-side */
.header-left {
  display: flex;
  align-items: center;
  gap: 15px;
}
.logo {
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  font-size: 1.8rem;
  letter-spacing: 0.5px;
  color: #1A3771;
}
.selected-university {
  font-size: 1rem;  /* smaller font */
  font-weight: 500;
  color: #555;
  display: none;    /* hidden until user picks a university */
}

/* .header-center: search bar */
.header-center {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}
.header-search {
  position: relative;
  display: flex;
  align-items: center;
  background-color: #f7f7f7;
  border-radius: 30px;
  padding: 5px 15px;
}
.search-icon {
  color: #aaa;
  margin-right: 5px;
}
.header-search input {
  border: none;
  background: transparent;
  outline: none;
  font-size: 1rem;
  width: 250px;
}

/* .header-right: create post link, "University" button, user menu */
.header-right {
  display: flex;
  align-items: center;
  gap: 20px;
}
.create-post-link {
  text-decoration: none;
  color: #222;
  font-weight: 500;
}

/* University Toggle Button */
.university-toggle-button {
  background: #f7f7f7;
  border: 1px solid #ccc;
  border-radius: 20px;
  padding: 5px 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.9rem;
  color: #333;
}
.university-toggle-button:hover {
  background: #e0e0e0;
}
.university-toggle-button .material-icons {
  font-size: 18px;
  color: #666;
}

/* User Menu */
.user-menu-container {
  position: relative;
}
.menu-button {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid #ccc;
  background: #fff;
  border-radius: 20px;
  padding: 5px 10px;
  cursor: pointer;
}
.menu-button .material-icons {
  color: #555;
}
.dropdown-menu {
  position: absolute;
  top: 40px;
  right: 0;
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 6px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  display: none;
  flex-direction: column;
  min-width: 150px;
  z-index: 999;
}
.dropdown-menu a {
  padding: 10px 15px;
  color: #333;
  text-decoration: none;
  display: block;
}
.dropdown-menu a:hover {
  background-color: #f0f0f0;
}
.dropdown-menu.show {
  display: flex;
}

/* Mobile Bottom Nav */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: #fff;
  border-top: 1px solid #ddd;
  box-shadow: 0 -2px 6px rgba(0,0,0,0.08);
  height: 60px;
  justify-content: space-around;
  align-items: center;
  z-index: 9999;
}
.mobile-bottom-nav .nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  color: #333;
  text-decoration: none;
}
.mobile-bottom-nav .nav-item span.material-icons {
  font-size: 24px;
  color: #333;
}
.mobile-bottom-nav .nav-item p {
  font-size: 0.75rem;
  margin-top: 2px;
  color: #333;
}

/* Category Bar Wrapper */
.category-bar-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #f7f7f7;
  padding: 3px 20px; /* Reduced vertical padding */
  border-top: 1px solid #ddd;
  border-bottom: 1px solid #ddd;
}
.category-bar-container {
  position: relative;
  flex: 1;
  overflow: hidden;
}
.category-bar {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 5px 0;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.category-bar::-webkit-scrollbar {
  display: none;
}
.category-option {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 4px 10px;
  min-width: 80px;
  border: 2px solid transparent;
  border-radius: 30px;
  background-color: #fff;
  transition: background-color 0.3s, border-color 0.3s;
}
.category-option.active {
  border-color: #1A3771;
  background-color: #e8edf7;
}
.category-option:hover {
  background-color: #f0f4ff;
}
.category-option span.material-icons {
  font-size: 24px;
  margin-bottom: 3px;
  color: #1A3771;
}
.category-option p {
  color: #1A3771;
  font-size: 0.8rem;
  text-transform: capitalize;
  white-space: nowrap;
}
.category-scroll-arrow {
  position: absolute;
  top: 50%;
  right: 0;
  transform: translateY(-50%);
  background: linear-gradient(to left, rgba(247,247,247,1), rgba(247,247,247,0));
  width: 40px;
  height: 40px;
  display: none;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.category-scroll-arrow.show {
  display: flex;
}
.category-scroll-arrow span.material-icons {
  font-size: 24px;
  color: #555;
}
.filters-button {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 8px 12px;
  border: 2px solid transparent;
  border-radius: 30px;
  background-color: #fff;
  transition: background-color 0.3s, border-color 0.3s;
  margin-left: 20px;
}
.filters-button:hover {
  background-color: #f0f4ff;
}
.filters-button span.material-icons {
  font-size: 24px;
  margin-bottom: 5px;
  color: #1A3771;
}
.filters-button p {
  color: #1A3771;
  font-size: 0.8rem;
  text-transform: capitalize;
  white-space: nowrap;
}

/* Posts Grid */
.posts-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  padding: 20px;
}
@media (min-width: 600px) {
  .posts-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (min-width: 1024px) {
  .posts-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}
@media (min-width: 1440px) {
  .posts-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}
@media (min-width: 1920px) {
  .posts-grid {
    grid-template-columns: repeat(6, 1fr);
  }
}

/* Post Card */
.post-card {
  position: relative;
  background: #fff;
  border: 1px solid #eee;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.05);
  padding: 20px;
  cursor: pointer;
  transition: transform 0.3s, box-shadow 0.3s;
}
.post-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 15px rgba(0,0,0,0.1);
}

/* If a post has no photo, display its body text in the "photo area" */
.post-body-text {
  width: 100%;
  height: 200px;
  background-color: #f9f9f9;
  color: #555;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
  text-align: center;
  font-size: 1rem;
}

/* Post Image */
.post-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 10px;
}
.post-card h2 {
  font-size: 1.2rem;
  margin-bottom: 10px;
  color: #1A3771;
}
.post-card p {
  font-size: 0.95rem;
  color: #555;
}
.post-price {
  font-weight: 600;
  color: #333;
  margin: 5px 0;
}
.post-time-ago {
  font-size: 0.8rem;
  color: #777;
  margin-bottom: 5px;
}

/* Category Labels */
.post-category,
.modal-category {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 4px;
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 10px;
}
.modal-category {
  font-size: 0.9rem;
  margin-bottom: 15px;
}

/* Modal Styles */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease;
}
.modal.active {
  opacity: 1;
  visibility: visible;
}
.modal-content {
  margin-top: 20px;
  background: #fff;
  border-radius: 10px;
  width: 90%;
  max-width: 600px;
  padding: 30px;
  position: relative;
  animation: fadeInUp 0.5s;
  max-height: calc(100vh - 60px);
  overflow-y: auto;
}
@keyframes fadeInUp {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}
.close-modal {
  position: absolute;
  top: 15px;
  right: 15px;
  font-size: 1.5rem;
  color: #888;
  cursor: pointer;
}

/* Modal Slider */
#modalSlider {
  position: relative;
  margin-bottom: 15px;
}
#modalSlider img {
  width: 100%;
  height: auto;
  border-radius: 8px;
}
.slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 2rem;
  color: #1A3771;
  background: rgba(255,255,255,0.8);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  user-select: none;
}
.slider-arrow.left {
  left: 10px;
}
.slider-arrow.right {
  right: 10px;
}

/* Modal Text */
.modal-content h2 {
  margin-bottom: 5px;
  color: #1A3771;
}
.modal-content .price {
  font-weight: 600;
  margin-top: 5px;
  margin-bottom: 20px;
  color: #000;
}
.modal-content p {
  margin-bottom: 10px;
  color: #555;
}
.created-at {
  font-size: 0.9rem;
  color: #555;
  margin-bottom: 15px;
}

/* Message Box */
.message-box {
  margin-top: 20px;
}
.message-box form {
  display: flex;
  flex-direction: column;
}
.message-box form label {
  margin-bottom: 5px;
  font-weight: 600;
  color: #555;
}
.message-box input,
.message-box textarea {
  margin-bottom: 10px;
  padding: 10px;
  border-radius: 6px;
  border: 1px solid #ddd;
  font-size: 1rem;
  resize: vertical;
}
.message-box button {
  margin-bottom: 10px;
  background-color: #1A3771;
  color: #fff;
  padding: 10px 20px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}
.message-box button:hover {
  background-color: #2D5D98;
}

/* Share Buttons */
.share-buttons {
  margin-top: 20px;
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: flex-end;
  margin-top: auto;
}
.share-buttons button {
  background-color: #1A3771;
  color: white;
  padding: 10px 15px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: background-color 0.3s;
}
.share-buttons button:hover {
  background-color: #2D5D98;
}
.share-buttons i {
  font-size: 1.2rem;
}

/* Wishlist Icon & Message */
.wishlist-icon {
  position: absolute;
  top: 25px;
  right: 25px;
  color: rgba(0,0,0,0.5);
  padding: 5px;
  border-radius: 50%;
  cursor: pointer;
  z-index: 10;
}
.wishlist-icon i {
  font-size: 1rem;
}
.wishlist-message {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0,0,0,0.7);
  color: #fff;
  padding: 5px 10px;
  border-radius: 5px;
  font-size: 0.8rem;
  z-index: 20;
  opacity: 1;
  transition: opacity 0.5s ease-out;
}

/* Responsive Adjustments */
@media (max-width: 600px) {
  .header-left,
  .header-right {
    display: none;
  }
  .header-center {
    flex: initial;
    width: 100%;
    justify-content: center;
  }
  .header-search {
    width: 90%;
    margin: 0 auto;
  }
  .mobile-bottom-nav {
    display: flex;
  }
  .app-container {
    padding-top: 70px;
  }
}
@media (min-width: 601px) {
  .mobile-bottom-nav {
    display: none;
  }
}


/* University Selection Styling */
.university-selection-wrapper {
  display: flex;
  justify-content: center;
  padding: 5px 0;
  background-color: #fff;
  border-bottom: 1px solid #ccc;
}
.university-selection {
  display: flex;
  gap: 10px;
}
.university-option {
  padding: 10px 20px;
  background-color: #f0f0f0;
  border: 1px solid #ccc;
  border-radius: 20px;
  font-size: 14px;
  cursor: pointer;
  transition: background-color 0.3s;
}
.university-option.active {
  background-color: #1d3557;
  color: white;
}
.university-option:hover {
  background-color: #e0e0e0;
}

/* University Bar Wrapper */
.university-bar-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  padding: 5px 20px;
  border-bottom: 1px solid #ccc;
}
.university-bar-container {
  position: relative;
  flex: 1;
  overflow: hidden;
}
.university-bar {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 5px 0;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.university-bar::-webkit-scrollbar {
  display: none;
}
.university-option {
  flex: 0 0 auto;
  padding: 8px 16px;
  background-color: #f0f0f0;
  border: 1px solid #ccc;
  border-radius: 20px;
  font-size: 14px;
  cursor: pointer;
  transition: background-color 0.3s;
  white-space: nowrap;
}
.university-option.active {
  background-color: #1d3557;
  color: white;
}
.university-option:hover {
  background-color: #e0e0e0;
}
.university-scroll-arrow {
  position: absolute;
  top: 50%;
  right: 0;
  transform: translateY(-50%);
  background: linear-gradient(to left, rgba(255,255,255,1), rgba(255,255,255,0));
  width: 40px;
  height: 40px;
  display: none;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 1;
}
.university-scroll-arrow.show {
  display: flex;
}
.university-scroll-arrow span.material-icons {
  font-size: 24px;
  color: #555;
}

/* The selected university text (shown after user picks) */
/* Added cursor pointer so user knows it's clickable */
.selected-university {
  font-size: 1.5rem;
  font-weight: 600;
  text-align: center;
  padding: 4px 0;
  color: #1A3771;
  cursor: pointer; /* <-- ADDED so user sees it's clickable */
}