@font-face {
  font-family: 'Mosntserrat Bold';
  src: url('../font/Montserrat-Bold.ttf') format('truetype');
  font-display: swap;
}

:root {
  --ab-orange: #f7931E;
  --ab-orange-light: #f5af2b;
  --ab-box-shadow: 10px 10px 5px rgba(0,0,0,0.5);
  --bs-body-line-height: 1.2;
  --bs-body-font-size: 20px;
}

.navbar-nav {
  --bs-navbar-active-color: var(--ab-orange-light);  
  --bs-navbar-color: rgba(255, 255, 255, 0.75); 
  --bs-navbar-hover-color: rgba(255, 255, 255, 0.55);
}

.ab-btn {
  --bs-btn-color: #000;
  --bs-btn-bg: var(--ab-orange);
  --bs-btn-border-color: var(--ab-orange);
  --bs-btn-hover-color: #000;
  --bs-btn-hover-bg: var(--ab-orange-light);
  --bs-btn-hover-border-color: var(--ab-orange-light);
  --bs-btn-focus-shadow-rgb: 217,164,6;
  --bs-btn-active-color: #000;
  --bs-btn-active-bg: var(--ab-orange-light);
  --bs-btn-active-border-color: var(--ab-orange-light);
  --bs-btn-active-shadow: inset 0 3px 5px rgba(0, 0, 0, 0.125);
  --bs-btn-disabled-color: #000;
  --bs-btn-disabled-bg: var(--ab-orange);
  --bs-btn-disabled-border-color: var(--ab-orange);
  text-transform: uppercase;
  font-weight: 600;
}

.accordion {
  --bs-accordion-bg: var(--ab-orange);
  --bs-accordion-btn-focus-border-color: var(--ab-orange);
  --bs-accordion-active-bg: var(--ab-orange);
  --bs-accordion-btn-focus-box-shadow: none;
  --bs-accordion-active-color: #fafafa;
  --bs-accordion-btn-color: #fafafa;
  --bs-accordion-btn-icon: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23fafafa'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
  --bs-accordion-btn-active-icon: var(--bs-accordion-btn-icon);
}

.accordion-button {
  transition: background-color 0.5s ease;  
}

.accordion-button:hover {
  background-color: var(--ab-orange-light);  
}

.accordion-item {
  background-color: #fafafa;
  text-align: left;
  text-shadow: none;
  font-weight: 600;
}

main section:first-child {
  margin-top: 80px;
}

* {
  scroll-margin-top: 80px;
}

h1, h2, h3 {
  font-family: 'Mosntserrat Bold';
  text-transform: uppercase;
  color: var(--ab-orange);
}

h1 {
  font-size: calc(2.0rem + 1.75vw);
  line-height: 0.9em;
  text-align: left;
  text-shadow: 0 .2rem .2rem rgba(0, 0, 0, .75);  
}

h2 {
  font-size: calc(1.375rem + 1.5vw);
  text-shadow: 0 .2rem .2rem rgba(0, 0, 0, .75);  
}

h3 {
  font-size: calc(0.8rem + 1.5vw);
  text-shadow: none;
  text-align: left;
}

@media (min-width: 1200px) {
  h2 {
      font-size: 2.5rem;
  }

  h3 {  
    font-size: 1.75rem;
  }
}

/* Globals */

hr {
  margin-top: 0px;
}

a {
  color: var(--ab-orange);
  text-shadow: none;
  transition: color 0.5s ease;    
}

a:hover {
  color: var(--ab-orange-light);
}

.lead {
  font-weight: 600; 
  text-shadow: 
    -1px -1px 0 rgba(0,0,0,0.5),
    -1px 1px 0 rgba(0,0,0,0.5),
    1px -1px 0 rgba(0,0,0,0.5),
    1px 1px 0 rgba(0,0,0,0.5);
}

body {
  /*text-shadow: 0 .075rem .1rem rgba(0, 0, 0, .75);*/
  color: #fafafa;
}

#background {
  position: fixed;
  width: 100vw;
  height: 100vh;
  background: url('../img/bg-windmill.jpg');
  background-size: cover;
  background-repeat: no-repeat;
  z-index: 0;
}

#foreground {
  position: relative;
  z-index: 1;
}

.navbar {
  --bs-navbar-padding-y: 0px;
  --bs-navbar-padding-x: 0px;
}

.navbar .nav-item {
  border-left: 1px solid white;
  text-transform: uppercase;
}

.navbar .nav-item:first-child {
  border-left: none;
}

.navbar .nav-link {
  display: inline;
  font-weight: 600;
}

.navbar-brand img {
  filter: brightness(0) invert(100%);  
}

.intro {
  text-align: left;
  margin: auto;
  width:80%;
}

.intro p {
  text-transform: uppercase;
}

.lead {
  line-height: 2rem;
}

h1 small {
  display: block;
  font-size: 0.4em;
  line-height: 1.1em;
  color: rgba(var(--bs-white-rgb))
}

#countdown {
  color: var(--ab-orange);
  font-size: calc(1.375rem + 1.5vw);
  margin: 60px 0px 60px 0px;
}

/* Speakers */
.ab-main .speaker-card {
  cursor: pointer;
}

.ab-main .speaker-card > div {
  transition: transform 0.5s ease;
  will-change: transform, scale; 
}

@media (min-width: 992px) {
  .ab-main .speaker-card > div {
    margin: 15px;
  }
  
  .ab-main .speaker-card > div:hover {
    transform: scale(1.075);  
  }
}

.ab-main .ab-speakers .cards-container {
  gap: 20px;
}

.speaker-photo {
  padding: 10px;
  max-width: 250px;
}

.speaker-card-content {
  white-space: nowrap;
  text-shadow: none;
  padding: 1rem 0.5rem 1rem 0.5rem;
}

@media (max-width: 991px) {
  .ab-main .ab-speakers .cards-container {
    gap: 15px;
  }

  .ab-main .speaker-card {
    width: 200px;
  }

  .ab-main .speaker-card-content {
    padding: 7px;
  }

  .speaker-card-content h5 {
    font-size: 1rem;
  }

  .speaker-card-content p {
    font-size: 1rem;
  }
}

@media (max-width: 575px) {
  .ab-main .ab-speakers .cards-container {
    gap: 10px;
  }

  .ab-main .speaker-card {
    width: 125px;
  }

  .ab-main .speaker-card-content {
    padding: 5px;
  }

  .speaker-card-content h5 {
    font-size: .75rem;
  }

  .speaker-card-content p {
    font-size: .75rem;
  }
}

.speaker-details .speaker-container {
  gap: 20px;  
}

.speaker-details #background {
  background-position: 0px 15%;
}

.speaker-details .card-container {
  flex-shrink: 0;
}

.card, .btn
{
  box-shadow: var(--ab-box-shadow);
}

.speaker-details .speaker-bio {
  min-height: 100%;
  padding: 20px 20px 0px 20px;
  text-align: left;
  word-break: break-word;
  text-shadow: none;
  font-weight: 600;
  display: flex;
  flex-grow: 1;
}

@media (max-width: 575px) {
  .speaker-details .speaker-container {
    flex-direction: column;    
  }
}

.speaker-details .ab-tickets {
  margin-top: 10vh;
}

.ab-tickets .card {
  max-width: 70%;
}

@media (max-width: 575px) {
  .ab-tickets .card {  
    max-width: 100%;
  }
}

.ab-tickets .card > div {
  margin: 10px;
  padding: 10px;
  border: var(--bs-border-width) solid var(--bs-border-color);
  border-radius: var(--bs-border-radius);
}

.ab-tickets p {
  text-align: left;
  text-transform: uppercase;
  text-shadow: none;
  font-weight: 600;
}

.ab-tickets .eur {
  padding-left: 3px;
  padding-right: 3px;
  color: var(--ab-orange);
  font-weight: 600;
  text-shadow: none;
}

.ab-tickets .ln {
  color: var(--ab-orange);
}

.ab-tickets .ticket-decoration {
  position: absolute;
  right: -87.5px;
  bottom: -50px;
}

.ab-tickets .ticket-decoration img {
  width: 175px;
  height: auto;
}

.ab-tickets .buy-ticket-btn img {
  width: 200px;
  max-width: 100%;
  height: auto;
}

.ab-tickets .disabled a[href*='bitkassa.nl'] {
  cursor: default;
}

.ab-tickets .disabled .buy-ticket-btn {
  filter: grayscale(100%);
}

.ab-tickets .buy-ticket-btn img, .ab-tickets .ticket-decoration {
  transition: transform 0.5s ease;
  will-change: transform, scale; 
}

@media (min-width: 992px) {
  .ab-tickets .enabled .buy-ticket-btn img:hover, .ab-tickets .enabled .ticket-decoration:hover {
    transform: scale(1.075);  
  }
}

.btn-back {
  display: none;
  padding: var(--bs-navbar-toggler-padding-y) var(--bs-navbar-toggler-padding-x);
  font-size: var(--bs-navbar-toggler-font-size);
  line-height: 1;
  color: var(--bs-navbar-color);
  background-color: black;
  border: var(--bs-border-width) solid var(--bs-navbar-toggler-border-color);
  border-radius: var(--bs-navbar-toggler-border-radius);
}  

.btn-back-icon {
  display: inline-block;
  width: 1.5em;
  height: 1.5em;
  vertical-align: middle;
  background-image: url('../img/return.svg');
  background-repeat: no-repeat;
  background-position: center;
  background-size: 100%;
}

.show-back-nav .btn-back {
  display: block;
}

@media (max-width: 991px) {
  .speaker-details .speaker-bio {
    line-height: 17px;
    font-size: 0.8rem;
  }
}

.ab-sponsors .card {
  --ab-sponsor-base-padding: 20px;
  align-items: center;
  justify-content: center;
  padding: var(--ab-sponsor-base-padding);
  width: 300px;
  min-height: 150px;
}

.ab-sponsors .card.extra-width {
  --ab-sponsor-base-padding: 10px;
}

.ab-sponsors .cards-container {
  gap: 20px;
}

.ab-sponsors a {
  width: 100%;
  height: auto;
  transition: transform 0.5s ease;
  will-change: transform, scale; 
}

.ab-sponsors a:hover {
  transform: scale(1.1);    
}

.ab-sponsors img {
  width: 100%;
  max-height: 100px;
  object-fit: contain;
  /* orange filter generated by: https://codepen.io/sosuke/pen/Pjoqqp */
  filter: brightness(0) invert(67%) sepia(77%) saturate(2245%) hue-rotate(347deg) brightness(100%) contrast(94%);
  padding: 10px;
  border-radius: var(--bs-card-border-radius);
}

.ab-sponsors img:hover {
  filter: none;
}

.ab-sponsors .ab-empty span {
  color: var(--ab-orange);
  text-shadow: none;  
}

@media (max-width: 991px) {
  .ab-sponsors .card {
    width: 200px;
    min-height: 100px;
    padding: 15px;
  }

  .ab-sponsors .cards-container {
    gap: 15px;
  }

  .ab-sponsors img {
    max-height: 75px;
    padding: 7px;
  }

  .ab-sponsors .ab-empty span {
    font-size: 1rem;
  }
}

@media (max-width: 575px) {
  .ab-sponsors .card {
    width: 125px;
    min-height: 75px;
    padding: calc(var(--ab-sponsor-base-padding) - 10px);
  }

  .ab-sponsors a:hover {
    transform: none;
  }

  .ab-sponsors .cards-container {
    gap: 10px;
  }

  .ab-sponsors img {
    max-height: 50px;
    padding: 5px;
  }

  .ab-sponsors .ab-empty span {
    font-size: 0.75rem;
  }
}

/* Header */
.nav-masthead .nav-link {
  padding: .25rem 0;
  font-weight: 700;
  color: rgba(255, 255, 255, .5);
  background-color: transparent;
  border-bottom: .25rem solid transparent;
}

.nav-masthead .nav-link:hover,
.nav-masthead .nav-link:focus {
  border-bottom-color: rgba(255, 255, 255, .25);
} 

.nav-masthead .nav-link + .nav-link {
  margin-left: 1rem;
}

.nav-masthead .active {
  color: #fff;
  border-bottom-color: #fff;
} 

.navbar-toggler {
  background-color: black;
}

.navbar-toggler:focus {
  box-shadow: none;
}

/* Footer */

.ab-footer {
  display: flex;
  justify-content: space-between;
  margin-top: -2rem;
}

.ab-footer-tree-right {
  background-image: url('../img/bg-tree-right.png');
  background-size: cover;
  background-repeat: no-repeat;
  width: 20vw;
  height: 30vw;
}

.ab-footer-windmill-left {
  background-image: url('../img/bg-windmill-left.png');
  background-size: cover;
  background-repeat: no-repeat;
  width: 20vw;
  height: 30vw;
}

.ab-socials a {
  width: 100%;
  height: auto;
}

.ab-socials .ab-circle {
  width: 40px;
  height: 40px;
  background-color: var(--ab-orange);
  border-radius: 50%;
  display: flex;
  align-items: center;
  text-align: center;
  transition: background-color 0.5s ease;  
}

.ab-socials .ab-circle:hover {
  background-color: var(--ab-orange-light);  
}

.ab-socials img {
  margin: auto;
  width: 24px;
  height: 24px;
  vertical-align: bottom;
  filter: brightness(0);  
}

.ab-socials .ab-circle.meetup img {
  width: 30px;
  height: 30px;
}

.ab-socials {
  gap: 0.5rem;
  justify-content: center;
}

.speaker-bio .ab-socials {
  justify-content: left;
}

.carousel-container .card {
  padding: 10px;
}

@media (min-width: 992px) {
  .carousel-container .card {
    padding: 25px;
  }
}

.carousel ul {
  margin: 0;
}

.glide__track {
  max-width: 75vh;
}

.glide__slide {
  object-fit: fill;
}

.ab-events .event-container {
  gap: 20px;
  margin-top: 20px;
}

.ab-events .event-container:first-child
{
  margin-top: 0px;
}

.ab-events .event-text {
  display: flex;
  width: 100%;
  min-width: 0;
  flex-grow: 1;
  text-shadow: none;
  font-weight: 600;
  background-image: url(../img/calendar.png);
  background-position: -50px -150px;
  background-repeat: no-repeat;
  text-align: left;
}

.ab-events .event-image img {
  max-width: 600px;
  width: 100%;
}

.ab-event-data-table .col {
  padding: 3px 5px 3px 5px;
  border-color: black;
  border-style: solid;
  border-width: 0px 1px 1px 0px;
}

.ab-event-data-table .row .col:nth-child(2) {
  text-align: left;
}

.ab-event-data-table .row:first-child .col {
  border-top-width: 1px;
}

.ab-event-data-table .row .col:first-child {
  border-left-width: 1px;
}


.ab-events-table footer {
  margin-top: auto;
  bottom: 0;
  text-align: left;
}

@media (max-width: 767px) {
  .ab-events .event-container {
    flex-direction: column-reverse;
  }
}

.ab-schedule {
  overflow-x: hidden;
}

.ab-schedule .pretalx-container {
  background-color: rgba(255,255,255,0.85);
  color: black;
}

.ab-stats .container {
  width: 90%;
  max-width: 600px;
  --flapper-font-size: 51px;  
}

.ab-stats .row .col:first-child {
  text-align: right;
  font-family: Roboto Condensed, sans-serif;
  font-size: var(--flapper-font-size);
  font-weight: 300;
  color: var(--ab-orange);
}

.ab-stats .row .col:nth-child(2) {
  text-align: left;
  min-width: 300px;  
}

.ab-stats .container {
  padding: 10px;
}

.ab-stats .flapper {
  font-size: var(--flapper-font-size);
}

@media (max-width: 575px) {
  .ab-stats .row .col {
    text-align: center !important;
  }
}

@media (max-width: 767px) {
  /* force flapper into small (copied from flapper.css) */
  .ab-stats .container {
    --flapper-font-size: 36px;    
  }

  .flapper {
    line-height: 39px;
    height: 44px;
  }

  .flapper .digit {
      border-radius: 4px;
      margin: 0 0 0 2px;
  }

  .flapper .digit:first-child {
      margin: 0;
  }

  .flapper .digit div {
      border-radius: 2px;
  }

  .flapper .digit {
      height: 40px;
      width: 30px;
      font-size: inherit;
      line-height: inherit;
  }

  .flapper .digit .top {
      clip: rect(0px, auto, 19px, 0px);
  }

  .flapper .digit .bottom {
      clip: rect(20px, auto, 40px, 0px); 
  }
}

.video {
  font-size: 30px;
  text-transform: uppercase;
  font-weight: 600;
}

.video img {
  height:1.5em;
  filter: invert(63%) sepia(98%) saturate(1800%) hue-rotate(347deg) brightness(101%) contrast(94%);
}

.video a:hover img {
  filter: invert(75%) sepia(76%) saturate(1492%) hue-rotate(339deg) brightness(103%) contrast(92%);
}

.ab-recordings .stages {
  display: flex;
  gap: 20px;
}

@media (max-width: 768px) {
  .ab-recordings .stages {  
    flex-direction: column;
  }
}

.ab-recordings .stage {
  flex: 1;
}

.ab-recordings .stage {
  background-color: rgba(50, 50, 50, 0.5);
}

.ab-recordings .youtube {
  aspect-ratio: 1.77;
}

.ab-recordings h5 {
  text-align: left;
}

.ab-recordings .recording {
  display: flex;
  margin-bottom: 20px;
}

.ab-recordings .recording > div {
  padding: 0px 5px 0px 5px;  
}

.ab-recordings .time {
  flex: 0;
}

.ab-recordings .time div {
  white-space: nowrap;
}

.ab-recordings .content {
  flex: 1;
  text-align: left;
}

.ab-recordings ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.ab-recordings li {
  display: inline;
}

.ab-recordings li::after {
  content: ", ";
}

.ab-recordings li:last-child::after {
  content: "";
}