:root {
  --color-accent: #002147;
  --color-dark: #000;
  --color-light: #fff;
  --color-grey: #777;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 3em;
  font-family: 'Quicksand', sans-serif;
}

body {
  margin: 0;
  padding: 0;
}

h1,
h2,
h3,
h4,
h5,
h6,
p, 
ul,
li {
  margin: 0;
  padding: 0;
}

input {
  font-family: inherit;
  font-size: 0.9em;
}

/* navigation styling */

#navbar {
  position: fixed;
  z-index: 1;
  top: 0;
  left: 0;
  width: 100%;

  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--color-accent);
  border-bottom: 2px solid var(--color-light);
}

.navlist {
  display: flex;
  justify-content: flex-start;
  padding: 0.5em;
  width: 100%;
}

.navlist a {
  text-decoration: none;
  color: var(--color-light);
  border-radius: 100vw;
}

.navlist a:hover {
  text-decoration: none;
  background-color: var(--color-light);
  color: var(--color-accent);
}

.navlist li {
  display: block;
  padding: 0.8em 1.6em;
}

.navlist .logged-in-container {
  display: flex;
  margin-left: auto;
}

/* index styling */

main {
  padding-block: 64px;
  min-height: calc(100vh - 48px);
  color: #fff;
  background-color: var(--color-accent);
}

#welcome-section {
  display: flex;
  justify-content: center;
  align-items: center;
  height: calc(100vh - 64px);
  background-color: var(--color-accent);
  color: var(--color-light);
}

#welcome-section h1 {
  font-size: 3em;
}

#projects {
  padding: 1em 1em 6em;
  background-color: var(--color-light);
}

#projects h2 {
  text-align: center;
  padding: 2em;
  color: var(--color-accent);
}

.projects-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1em;
}

@media only screen and (max-width: 1280px ) {
  .projects-container {
    grid-template-columns: 1fr 1fr;
  }
}

@media only screen and (max-width: 800px ) {
  .projects-container {
    grid-template-columns: 1fr;
  }
}

#projects a {
  display: block;
  text-decoration: none;
  transition: transform 500ms ease-in-out;
}

#projects a h3 {
  display: inline;
  border-bottom: 2px solid transparent;
  transition: border-bottom 500ms ease-in-out;
}

#projects a:hover {
  transform: translate(0, -1em);
}

#projects a:hover h3 {
  border-bottom: 2px solid var(--color-light);
}

#projects img {
  display: block;
  max-width: 100%;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
}

#projects .title-container {
  padding: 1em;
  text-align: center;
  background-color: var(--color-accent);
  color: var(--color-light);
}

.project-tile {
  position: relative;
  width: 100%;
  height: auto;
  box-shadow: 0 2px 10px 2px rgba(0, 0, 0, 0.5);
}

#contact {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 95vh;
  background-color: var(--color-accent);
  color: var(--color-light);
}

#contact h2 {
  font-size: 3em;
}

.social-icons-container {
  margin-top: 8em;
  width: 80%;
  max-width: 800px;
  display: flex;
  justify-content: space-between;
}

#contact a {
  display: block;
  text-decoration: none;
  color: var(--color-light);
  transition: transform 500ms ease-out;
}

#contact a:hover {
  transform: translate(0, -0.5em);
}

#contact i {
  font-size: 2em;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 2em;
  padding: 1em;
  background-color: var(--color-accent);
  color: var(--color-light);
  border-top: 1px solid var(--color-light);
  font-size: 0.9em;
}

footer a {
  color: inherit;
}

footer a:hover {
  color: var(--color-grey);
}

@keyframes fade-out {
  from { opacity: 1; }
  to { opacity: 0; }
}

.project-succes-message {
  position: fixed;
  top: 5em;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  
  padding: 1em;
  width: 80%;
  max-width: 600px;

  border-radius: 1em;
  background-color: green;
  color: var(--color-light);

  animation: fade-out 2s linear 2s 1;
  animation-fill-mode: forwards;
}

/* login-page.php styles */

.form-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3em;

  padding-top: 6em;

  color: #fff;
  background-color: #002147;
}

#login-form {
  display: flex;
  flex-direction: column;
  gap: 1em;

  font-size: 1.25em;
}

#login-form .input-container {
  display: flex;
  justify-content: space-between;
  gap: 1em;
}

#login-form input {
  width: 300px;
  font-size: 1em;
  font-family: inherit;
}

#login-form .error-message {
  margin-inline: auto;
  color: red;
}

#login-form input[type=submit] {
  margin-inline: auto;
}
 

/* upload-project.php styles */

.upload-project-form-container {
  padding: 1em;
  background-color: #002147;
}

#project-form {
  display: flex;
  flex-direction: column;
  gap: 0.75em;
  margin-top: 2em;
  max-width: 400px;
}

.upload-project-form-container input {
  display: block;
  padding: 2px;
  font-size: 1em;
  width: 100%;
}

.upload-project-form-container input:focus {
  outline: 2px solid var(--color-light);
  border: 2px solid var(--color-accent);
}

.error-message {
  color: red;
}

.upload-project-form-container input[type=checkbox] {
  display: inline;
  width: unset;
}

.checkbox-container {
  display: flex;
  gap: 1em;
  flex-wrap: wrap;
}

#selected-tags {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  min-height: 25px;
}

#selected-tags div {
  padding: 2px 6px;
  border-radius: 5px;
  color: var(--color-accent);
  background-color: var(--color-light);
  font-weight: bold;
}

#selected-tags i {
  margin-right: 5px;
}


/* project overview page */

.navlist.project-overview {
  border-bottom: 2px solid var(--color-light);
}

.overview-tile {
  padding: 2em 1em;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.overview-tile a {
  text-decoration: none;
  color: inherit;
}

.overview-tile:nth-child(odd) {
  background-color: #061e3a;
}

.overview-tile:hover {
  background-color:rgba(0, 0, 0, 0.5);
}

.overview-tile .project-link {
  display: flex;
  align-items: center;
  gap: 2em;
}

.overview-tile .project-link:hover {
  text-decoration: underline;
}

.overview-tile img {
  max-height: 100px;
  width: auto;
}

.project-options-container {
  display: flex;
  gap: 1.5em;
}

.project-options-container button {
  background-color: transparent;
  border: none;
  color: inherit;
  font-size: inherit;
}

.project-options-container button:hover i,
.project-options-container a:hover i {
  transform: scale(150%);
  cursor: pointer;
}

.project-options-container .fa-trash {
  color: darkred;
}

.modal-container {
  position: fixed;
  z-index: 2;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  
  display: none;
  flex-direction: column;
  gap: 2em;

  padding: 2em;

  border-radius: 1em;
  
  background-color: var(--color-accent);
}

.modal-container .modal-buttons-container {
  display: flex;
  justify-content: space-between;
}

.modal-container button {
  padding: 0.5em 1em;
  font-size: 1em;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

.modal-container button:hover {
  text-decoration: underline;
}

.modal-container button.cancel {
  background-color: var(--color-light);
}

.modal-container button.delete {
  color: var(--color-light);
  background-color:rgb(143, 42, 42);
}

.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: all;
  background-color:rgba(0, 0, 0, 0.7);
}

/* edit project page */

.edit-project-container {
  padding: 2em 4em;
  background-color: var(--color-accent);
}

.edit-option-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 3em 0;
}

.edit-option-container .edit-title-container {
  display: flex;
  align-items: center;
  gap: 1em;
}

.edit-title-container i:hover {
  transform: scale(150%);
  cursor: pointer;
}

.edit-option-container #project-title {
  display: none;
  width: 250px;
}

.edit-option-container .slider {
  position: relative;
  width: 50px;
  height: 25px;
  padding: 2px;
  border-radius: 100vw;
  background-color: var(--color-light);
  cursor: pointer;
}

.edit-option-container .slider-button {
  content: "";
  position: absolute;
  z-index: 1;
  
  width: 20px;
  height: 20px;

  border-radius: 100vw;
}

.edit-option-container .slider-button.on {
  right: 4px;
  background-color: darkgreen;
}

.edit-option-container .slider-button.off {
  left: 4px;
  background-color: darkred;
}

.edit-option-container img {
  max-width: 200px;
  height: auto;
}

.edit-project-tags-container {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 1em;
}

.delete-tag-icon {
  cursor: pointer;
}

.edit-project-add-tags {
  display: flex;
  align-items: center;
  gap: 1em;
}

.new-tags-container {
  position: relative;
  width: 200px;
  height: 20px;
  border-radius: 5px;
  background-color: var(--color-light);
}

.new-tags-container:hover {
  cursor: pointer;
}

.new-tags-container i {
  position: absolute;
  right: 5px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-accent);
}

.new-tags-list {
  display: none;
  position: absolute;
  width: 100%;
  top: 20px;
  list-style: none;
  color: var(--color-accent);
  background-color: var(--color-light);
  border: 2px solid var(--color-light);
  border-radius: 0 0 5px 5px;
}

.new-tags-list li {
  padding: 6px;
  border-radius: 5px;
}

.new-tags-list li:hover {
  color: var(--color-light);
  background-color: var(--color-accent);
  cursor: pointer;
}

/* edit tags page */

.tags-overview-container {
  padding-top: 1em;
}

.tags-overview-header {
  padding-inline: 2em;
  padding-bottom: 1em;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px solid var(--color-light);
}

.tags-overview-header input {
  padding-left: 5px;
  font-size: 1em;
  font-family: inherit;
}

.tag-create-container .button-container {
  display: flex;
  justify-content: flex-end;
  gap: 1em;
  margin-top: 1em;
}

.tag-create-container .button-container button {
  border: none;
  border-radius: 2px;
  padding: 2px 10px;
  font-family: inherit;
  font-weight: bold;
  font-size: 0.9em;
  cursor: pointer;
}

.tag-create-container .button-container button:hover {
  outline: 2px solid var(--color-light);
}

.tag-create-container .button-container button.create {
  background-color: green;
}

.tag-create-container .button-container button.reset {
  background-color: grey;
}

.tag-row-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2em;
}

.tag-row-container:nth-child(even) {
  background-color:rgba(0, 0, 0, 0.5);
}

.tag-edit-options-container {
  display: flex;
  gap: 1.5em;
}

.tag-edit-options-container i {
  cursor: pointer;
}

.tag-edit-options-container i:hover {
  transform: scale(150%);
}

.tag-edit-options-container .fa-trash {
  color: darkred;
}