/* Base CSS */
:root {
  --accent: rgb(249, 207, 0);
  --accent-8: rgba(249, 207, 0, 0.8);
  --accent-5: rgba(249, 207, 0, 0.5);
  --accent-25: rgba(249, 207, 0, 0.25);
}

html {
  scroll-behavior: smooth;
}

body {
  background: black;
  color: white;
  padding-top: 43px;
}

h1, h2, h3, h4, h5, h6, .navbar-brand {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
}

p {
  font-family: 'Montserrat', sans-serif;
}

a:active, a:focus {
  outline: none;
}

.navbar {
  padding: 1rem 2rem;
  background: black;
}

.dropdown-menu {
  background: black;
  border: 1px solid white;
}

.dropdown-item {
  color: rgba(255, 255, 255, .5);
}

.dropdown-item:focus, .dropdown-item:hover {
  background-color: black;
  color: rgba(255, 255, 255, .75);
}

.dropdown-item.active, .dropdown-item:active {
  background: black;
  color: var(--accent);
  font-weight: bold;
}

li.nav-item {
  margin-left: 0.25rem;
  margin-right: 0.25rem;
}

@media (min-width: 992px) {
  .nav-item.active {
    border-bottom: 3px solid var(--accent);
  }
}

footer {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-brand {
  color: white;
  margin-left: 4px;
}

.footer-brand span {
  color: var(--accent);
}

.footer-brand:hover {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
}

footer .d-block {
  margin-left: 4px;
}

footer .d-flex {
  padding: 0 15px;
}

.footer-link {
  color: white;
  margin-right: 0.25rem;
  margin-left: 0.25rem;
}

.footer-link-sep {
  margin-right: 0.5rem;
  margin-left: 0.5rem;
}

.footer-link:hover {
  color: var(--accent);
}

.link {
  color: white;
}

.link:hover {
  color: var(--accent);
  text-decoration: none;
}

/* Override Bootstrap Styles */
.btn-primary {
  background-color: var(--accent);
  border-color: var(--accent);
  color: black;
}

.btn-primary:hover {
  background-color: var(--accent-8);
  border-color: var(--accent-8);
  color: black;
}

.btn-primary:not(:disabled):not(.disabled).active:focus, .btn-primary:not(:disabled):not(.disabled):active:focus, .show>.btn-primary.dropdown-toggle:focus {
  box-shadow: 0 0 0 .2rem var(--accent-5);
}

.btn-primary:not(:disabled):not(.disabled).active, .btn-primary:not(:disabled):not(.disabled):active, .show>.btn-primary.dropdown-toggle {
  background-color: var(--accent);
  border-color: var(--accent);
  color: black;
}

.btn-primary.focus, .btn-primary:focus {
  box-shadow: 0 0 0 .2rem var(--accent-5);
}

.contact-button {
  border: 1px solid var(--accent);
  border: 1px solid var(--accent-5);
  color: #eee;
  padding: 2rem;
  width: 100%
}

.contact-button:hover {
  border: 1px solid var(--accent);
  color: #fff;
}

/* home page */
#hero {
  background-attachment: fixed;
  background-image: url("https://img.cleberg.net/space-wiki/hero-banner.jpg");
  background-position: bottom;
  background-repeat: no-repeat;
  background-size: contain;
  height: 65vh;
}

#hero div.text-center {
  margin-top: 3rem;
  margin-right: 0.5rem;
  margin-left: 0.5rem;
}

#hero-title {
  font-size: 5rem;
}

@media (max-width: 768px) {
  #hero-title {
    font-size: 3rem;
  }
}

@media (max-width: 576px) {
  #hero-title {
    font-size: 2rem;
  }
}

#hero-subtitle {
  color: var(--accent);
  text-transform: uppercase;
}

#explore-content {
  padding-top: 3rem;
  padding-bottom: 3rem;
}

#explore-options {
  padding-top: 2rem;
  padding-bottom: 2rem;
}

.explore-card {
  margin-top: 1rem;
  margin-bottom: 1rem;
  background: inherit;
  color: inherit;
  border: 1px solid #fff;
  cursor: pointer;
}

.explore-card .card-body {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.explore-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

#apod-wrapper {
  margin-bottom: 4rem;
}

#apod-container {
  display: none;
}

#apod-credit {
  font-size: 0.8rem;
  opacity: 0.5;
}

#apod-img, #apod-vid {
  display: none;
  max-width: 95vw;
  max-height: 80vh;
  margin: 2rem auto auto auto;
}

#apod-explanation {
  font-size: 0.9rem;
}

/* planets */
.planet-container {
  min-height: calc(100vh - 5rem);
}

.planets-nav {
  margin: 5rem auto;
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  border: 1px solid white;
  width: max-content;
  padding: 0.25rem 2rem;
  border-radius: 0.25rem;
}

.planets-nav-item {
  margin: 0.5rem 0;
}

.planets-nav-item:not(.active) {
  color: var(--accent);
}

.planets-nav-item.active {
  color: rgba(255, 255, 255, 0.8);
}

.planets-nav-item.active:before {
  color: #fff;
  content: "<";
  padding: 0 1rem;
}

.planets-nav-item.active:after {
  color: #fff;
  content: ">";
  padding: 0 1rem;
}

#sun-breadcrumb:before {
  content: none;
}

#neptune-breadcrumb:after {
  content: none;
}

.planet-about {
  font-weight: bold;
  margin-bottom: 0;
  text-transform: uppercase;
  color: var(--accent);
}

.planet-title {
  margin-bottom: 4rem;
}

.planet-description {
  margin-bottom: 4rem;
}

.planet-stats {
  margin-bottom: 2rem;
}

.planet-link {
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 2rem;
}

.planet-link:hover {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 2px solid var(--accent);
}

.solar-system {
  margin-top: 10rem;
  margin-bottom: 5rem;
}

.solar-system>h1 {
  margin-bottom: 4rem;
}

.planet-img {
  width: 100%;
}

@media (max-width: 768px) {
  .planet-img {
    margin: 3rem auto;
  }
}

/* gallery */
#search_container {
  margin-top: 5rem;
}

#temporary-banner {
  text-align: center;
  padding: 5rem 3rem;
  background: #222;
  color: rgba(255, 255, 255, 0.7);
  border-radius: 0.5rem;
}

#search_container {
  margin-top: 6rem;
  margin-bottom: 4rem;
}

#search_row {
  margin-bottom: 4rem;
}

#search_row div {
  margin-top: 0.5rem;
}

#search_input {
  background: inherit;
  color: inherit;
  height: 3rem;
  padding: 1.5rem;
  font-size: 1.5rem;
}

#search_button {
  width: 100%;
  height: 100%;
}

.gallery-card {
  background: inherit;
  color: inherit;
  border: 1px solid rgba(255, 255, 255, 0.5);
}

.gallery-card .card-title {
  margin: 0;
}

/* about */
#meet-us, #contact-us {
  margin-top: 5rem;
  margin-bottom: 5rem;
  text-align: center;
}

#banner-title {
  margin-bottom: 2rem;
}

#banner-title a {
  color: var(--accent);
}

#meet-us-card {
  text-align: left;
  width: 100%;
  background: inherit;
  color: inherit;
}

#meet-us-card .card-img-left {
  display: block;
  height: 200px;
  width: 200px;
  border: 1px solid white;
  margin-bottom: 2rem;
  margin-right: auto;
  margin-left: auto;
}

#meet-us-card .card-link {
  color: var(--accent);
}

#meet-us-card .card-link:hover {
  color: var(--accent);
  opacity: 0.8;
}

.form-control {
  background: inherit;
  color: inherit;
  border: 1px solid white;
}

.form-control:focus {
  background: inherit;
  color: inherit;
  border-color: var(--accent);
  box-shadow: 0 0 0 .2rem var(--accent-25);
}

/* missions */
#timeline-page-container {
  margin: 5rem auto;
}

#centered-timeline {
  margin: 4rem auto;
}

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  width: 100%;
}

.timeline h1, .timeline h2, .timeline h3, .timeline h4, .timeline h5, .timeline h6 {
  line-height: inherit;
}

h2.timeline-title {
  color: var(--accent);
}

h3.timeline-title {
  color: white;
}

/*----- TIMELINE ITEM -----*/
.timeline-item {
  padding-left: 40px;
  position: relative;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

/*----- TIMELINE INFO -----*/
.timeline-info {
  font-size: 12px;
  font-weight: 700;
  /* letter-spacing: 3px; */
  margin: 0 0 .5em 0;
  text-transform: uppercase;
  white-space: nowrap;
}

/*----- TIMELINE MARKER -----*/
.timeline-marker {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 15px;
}

.timeline-marker:before {
  background: #f9cf00;
  border: 3px solid transparent;
  border-radius: 100%;
  content: "";
  display: block;
  height: 15px;
  position: absolute;
  top: 4px;
  left: 0;
  width: 15px;
  transition: background 0.3s ease-in-out, border 0.3s ease-in-out;
}

.timeline-marker:after {
  content: "";
  width: 3px;
  background: #CCD5DB;
  display: block;
  position: absolute;
  top: 24px;
  bottom: 0;
  left: 6px;
}

.timeline-item:last-child .timeline-marker:after {
  content: none;
}

.timeline-item:not(.period):hover .timeline-marker:before {
  background: transparent;
  border: 3px solid #f9cf00;
}

/*----- TIMELINE CONTENT -----*/
.timeline-content {
  padding-bottom: 40px;
}

.timeline-content p:last-child {
  margin-bottom: 0;
}

/*----- TIMELINE PERIOD -----*/
.period {
  padding: 0;
}

.period .timeline-info {
  display: none;
}

.period .timeline-marker:before {
  background: transparent;
  content: "";
  width: 15px;
  height: auto;
  border: none;
  border-radius: 0;
  top: 0;
  bottom: 30px;
  position: absolute;
  border-top: 3px solid #CCD5DB;
  border-bottom: 3px solid #CCD5DB;
}

.period .timeline-marker:after {
  content: "";
  height: 32px;
  top: auto;
}

.period .timeline-content {
  padding: 40px 0 70px;
}

.period .timeline-title {
  margin: 0;
}

/*----------------------------------------------
    MOD: TIMELINE CENTERED
----------------------------------------------*/
@media (min-width: 992px) {

  .timeline-centered,
  .timeline-centered .timeline-item,
  .timeline-centered .timeline-info,
  .timeline-centered .timeline-marker,
  .timeline-centered .timeline-content {
    display: block;
    margin: 0;
    padding: 0;
  }

  .timeline-centered .timeline-item {
    padding-bottom: 40px;
    overflow: hidden;
  }

  .timeline-centered .timeline-marker {
    position: absolute;
    left: 50%;
    margin-left: -7.5px;
  }

  .timeline-centered .timeline-info,
  .timeline-centered .timeline-content {
    width: 50%;
  }

  .timeline-centered>.timeline-item:nth-child(odd) .timeline-info {
    float: left;
    text-align: right;
    padding-right: 30px;
  }

  .timeline-centered>.timeline-item:nth-child(odd) .timeline-content {
    float: right;
    text-align: left;
    padding-left: 30px;
  }

  .timeline-centered>.timeline-item:nth-child(even) .timeline-info {
    float: right;
    text-align: left;
    padding-left: 30px;
  }

  .timeline-centered>.timeline-item:nth-child(even) .timeline-content {
    float: left;
    text-align: right;
    padding-right: 30px;
  }

  .timeline-centered>.timeline-item.period .timeline-content {
    float: none;
    padding: 0;
    width: 100%;
    text-align: center;
  }

  .timeline-centered .timeline-item.period {
    padding: 50px 0 90px;
  }

  .timeline-centered .period .timeline-marker:after {
    height: 30px;
    bottom: 0;
    top: auto;
  }

  .timeline-centered .period .timeline-title {
    left: auto;
  }
}