/* Settings and Info/Credits screens: striped panel with a top and bottom bar that slide in */

.panel {
  width: 100vw;
  height: var(--screen-h);
  background: black url(../img/panel-stripes.png);
}

.panel-top,
.panel-bottom {
  position: relative;
  width: 100vw;
  transition: 300ms ease;
}

.panel-top {
  top: calc(-16 * var(--vh));
  height: calc(16 * var(--vh));
  background: url(../img/panel-top.png) 0 0 / 15px 100%;
}

.panel-bottom {
  bottom: calc(-21 * var(--vh));
  height: calc(21 * var(--vh));
  background: url(../img/panel-bottom.png) 0 0 / 8px 100%;
}

.panel-top.is-in { top: 0; }
.panel-bottom.is-in { bottom: 0; }

/* AM logo at the right of the top bar */
.panel-top::after {
  content: '';
  position: absolute;
  bottom: calc(2 * var(--vh));
  right: 12vw;
  width: calc(10 * var(--vh));
  height: calc(4.55 * var(--vh));
  background: url(../img/logo.png?v=5) 0 0 / 100% 100%;
}

.panel-body {
  position: relative;
  height: calc(var(--screen-h) - 37 * var(--vh));
  overflow: hidden auto;
}

.panel-back {
  position: absolute;
  top: calc(6 * var(--vh));
  left: 12vw;
  width: calc(30 * var(--vh));
  height: calc(8 * var(--vh));
  background: url(../img/button-back.png) 0 0 / 100% 100%;
  transition: 150ms;
}

.panel-back:hover, .panel-back:focus-visible { transform: scale(1.1); }

/* ---------- the two big buttons; --nav-w sizes everything inside them ---------- */

.panel-menu {
  --nav-w: calc(50 * var(--vh));
  position: absolute;
  top: calc(-1 * var(--screen-h));
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  gap: calc(var(--nav-w) * 0.4);
  opacity: 0;
  transition: top 300ms;
}

.panel-menu.is-in {
  top: 20%;
  opacity: 1;
}

.big-btn {
  position: relative;
  flex: none;
  display: flex;
  flex-direction: column;
  width: var(--nav-w);
  height: calc(var(--nav-w) * 0.76);
  background: url(../img/big-button.png) 0 0 / 100% 100%;
  transition: 300ms;
}

button.big-btn:hover, button.big-btn:focus-visible { transform: scale(1.1); }

.big-btn-icon {
  width: calc(var(--nav-w) * 0.4);
  height: calc(var(--nav-w) * 0.4);
  margin: calc(var(--nav-w) * 0.1) auto 0;
  background-size: 100% 100%;
}

.big-btn--info .big-btn-icon { background-image: url(../img/icon-info.png); }
.big-btn--settings .big-btn-icon { background-image: url(../img/icon-settings.png); }

.big-btn-label {
  position: absolute;
  bottom: calc(var(--nav-w) * 0.02);
  box-sizing: border-box;
  width: 100%;
  height: calc(var(--nav-w) * 0.2);
  color: #707070;
  font-family: var(--font);
  font-size: calc(var(--nav-w) * 0.076);
  line-height: calc(var(--nav-w) * 0.2);
  letter-spacing: -1px;
  text-align: center;
}

/* ---------- Info/Credits card ---------- */

.credits {
  box-sizing: border-box;
  width: calc(100% - 32px);
  max-width: 900px;
  margin: calc(4 * var(--vh)) auto;
  padding: calc(2 * var(--vh)) calc(4 * var(--vh));
  background: rgba(255, 255, 255, 0.9);
  border-radius: calc(3 * var(--vh));
  color: #474747;
  font-family: var(--font);
  -webkit-user-select: text;
  user-select: text;
}

.credits h2 {
  font-weight: 500;
  letter-spacing: -1px;
}

/* ---------- small and short screens ---------- */

@media (orientation: portrait) {
  .panel-menu {
    --nav-w: min(62vw, calc(30 * var(--vh)), 340px);
    flex-direction: column;
    align-items: center;
    gap: calc(var(--nav-w) * 0.12);
  }
}

@media (orientation: portrait), (max-height: 500px) {
  .panel-menu.is-in {
    top: 50%;
    transform: translateY(-50%);
  }
}

@media (max-width: 600px), (max-height: 500px) {
  .panel-top::after { right: 24px; }

  .panel-back {
    top: calc((calc(21 * var(--vh)) - 45px) / 2);
    left: 24px;
    width: 170px;
    height: 45px;
  }

  .credits {
    margin: 16px auto;
    padding: 4px 20px 16px;
    border-radius: 16px;
  }
}