:root {
  --primary-color: #99C24D;
  --secondary-color: #F18F01;
  --footer-background-color: #f8f9fa;
  --footer-text-color: #859AAD;
  --primary-background-color: #f8f9fa;
  --secondary-background-color: #F3F5F7;
  --hover-text-color: #f27059;
  --topnav-text-color: #4a5759;
  --sidebar-text-color: #8e9aaf;
  --highlight-text-color: #233d4d;
  --toc-contents-header-color: #ABB4C4;
  --image-background-color: #F3F5F7;
  --nav-height: 60px;
  --footer-height: 60px;
}

* {
  box-sizing: border-box;
}

body {
  background-color: var(--secondary-background-color);
  margin: 0;
  padding: 0;
  font-family: "Open Sans", "Clear Sans", "Helvetica Neue", Helvetica, Arial, 'Segoe UI Emoji', sans-serif;
  position: relative;
  min-height: 100vh;
  max-width: 100%;
  color: rgb(51, 51, 51);
  line-height: 1.5;
}

header {
  background-color: var(--secondary-background-color);
  text-align: left;
}

.container {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

#top-navigation {
    width: 75%;
    max-width: 75%;
    background-color: var(--secondary-background-color);
    padding: 2rem 0;
}

#top-navigation ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

#top-navigation li {
    margin-right: 1rem;
}

#top-navigation a {
    color: var(--topnav-text-color);
    text-decoration: none;
    font-size: 14px;
}

#top-navigation a:hover {
    color: var(--hover-text-color);
}

#top-navigation .active-link {
    position: relative;
    color: var(--hover-text-color);
}

#top-navigation .active-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -0.5rem;
    width: 100%;
    height: 4px;
    background-color: var(--hover-text-color);
}

main {
    background-color: var(--primary-background-color);
    padding: 0 2rem 2rem 2rem;
    width: 75%;
    max-width: 75%;
    margin: 0 auto;
    margin-bottom: 5em;
    font-size: 1em;
}

.body-links {
    color: #0077B5;
    text-decoration: none;
    background-color: #efefef;
    padding: 0.2rem 0.4rem;
    border-radius: 0.5rem;
}

.body-links:hover {
    color: #FF9770;
}

.body-links:active {
    color: #4b110f;
}

.grid {
    gap: 0;
    align-items: start;
    column-count: 3;
    column-gap: 2rem;
}

.grid-item {
    margin: 0;
    cursor: pointer;
    box-sizing: border-box;
    position: relative;
    padding: 0;
    break-inside: avoid;
    background-color: #F3F5F7;
    margin-bottom: 2rem;
    padding-bottom: 0;
}

.grid-item img {
    width: 100%;
    height: auto;
    margin-bottom: -0.5rem;
}

.img-caption {
    display: block;
    text-align: left;
    padding: 0.5rem;
    padding-left: 0.5rem;
    padding-top: 1rem;
    font-size: 0.8rem;
    color: #c5c3c6;
    margin-top: -0.5rem;
    margin-bottom: 1rem;
}

.modal {
    display: none;
    position: fixed;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.9);
}

.modal-content {
    margin: auto;
    display: block;
    margin-top: 1rem;
    margin-bottom: 1rem;
    max-width: 100%;
    max-height: calc(100vh - 200px);
}

#popupcaption {
    width: 100%;
    font-size: 1rem;
    color: white;
    text-align: left;
    padding: 1rem;
    margin-left: 0;
}

#caption {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 700px;
    text-align: center;
    color: #ccc;
    padding: 10px 0;
}

.close {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
}

.close:hover,
.close:focus {
    color: #bbb;
    text-decoration: none;
    cursor: pointer;
}

footer {
    background-color: var(--secondary-background-color);
    color: var(--footer-text-color);
    padding-left: 2rem;
    margin-bottom: 2rem;
    position: absolute;
    bottom: 0;
    width: 75%;
    font-size: 12px;
    font-weight: lighter;
}

.project-link {
    text-decoration: none;
    color: inherit;
    cursor: pointer;
    display: block;
    break-inside: avoid;
    margin-bottom: 2rem;
}

.project-link:hover {
    transform: translateY(-5px);
    transition: transform 0.2s ease-in-out;
}

.project-link .grid-item {
    margin-bottom: 0;
}

@media (max-width: 600px) {
    .grid {
        column-count: 1;
    }
}

@media (min-width: 600px) {
    .grid {
        column-count: 2;
    }
}

@media (min-width: 1200px) {
    .grid {
        column-count: 3;
    }
}

@media (min-width: 1600px) {
    .grid {
        column-count: 4;
    }
}

#nav-placeholder {
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
}

#nav-placeholder #top-navigation {
  width: 100%;
  padding: 2rem 0;
}

#nav-placeholder #top-navigation ul {
  padding-left: 2rem;  /* Match main content's padding */
}

.apps-grid {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    width: 100%;
}

.apps-grid-item {
    display: flex;
    background-color: #F3F5F7;
    border-radius: 8px;
    overflow: hidden;
    /* box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1); */
}

.apps-grid-item img {
    max-width: 300px;
    max-height: 200px;
    object-fit: cover;
    margin: 0;
}

.apps-caption {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    color: #8d979e
}

.apps-project-link {
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s ease-in-out;
}

.apps-project-link:hover {
    transform: translateY(-5px);
}

@media (max-width: 768px) {
    .apps-grid-item {
        flex-direction: column;
    }
    
    .apps-grid-item img {
        max-width: 100%;
    }
}