/* Railway Mitra — isolated bottom navigation shell
   Five functional destinations with a prominent Duty Roster shortcut. */

:root {
  --rm-bottom-nav-bg: rgba(7, 18, 39, .96);
  --rm-bottom-nav-cyan: #35e8ff;
  --rm-bottom-nav-pink: #ff45d4;
  --rm-bottom-nav-purple: #8d55ff;
}

.rm-bottom-nav {
  position: fixed;
  z-index: 900;
  left: max(10px, env(safe-area-inset-left));
  right: max(10px, env(safe-area-inset-right));
  bottom: calc(8px + env(safe-area-inset-bottom));
  width: min(820px, calc(100% - 20px));
  min-height: 78px;
  margin-inline: auto;
  padding: 8px 7px;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  align-items: end;
  gap: 3px;
  border: 1px solid rgba(53, 232, 255, .72);
  border-radius: 25px;
  background: linear-gradient(115deg, rgba(8, 24, 50, .98), rgba(25, 20, 57, .97));
  box-shadow: 0 0 14px rgba(53, 232, 255, .28),
              0 0 24px rgba(255, 69, 212, .16),
              inset 0 1px 0 rgba(255,255,255,.12);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.rm-bottom-nav__item {
  min-width: 0;
  min-height: 58px;
  padding: 4px 1px 2px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  border: 0;
  border-radius: 15px;
  color: #f4f7ff;
  background: transparent;
  font: inherit;
  text-align: center;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}

.rm-bottom-nav__icon {
  width: 31px;
  height: 31px;
  display: block;
  color: var(--rm-bottom-nav-cyan);
  filter: drop-shadow(0 0 5px rgba(53, 232, 255, .45));
}

.rm-bottom-nav__label {
  display: block;
  max-width: 100%;
  font-size: clamp(9px, 2.7vw, 11px);
  line-height: 1.12;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.rm-bottom-nav__item--feedback .rm-bottom-nav__icon {
  color: var(--rm-bottom-nav-pink);
  filter: drop-shadow(0 0 5px rgba(255, 69, 212, .48));
}

.rm-bottom-nav__item--featured-center {
  position: relative;
  z-index: 1;
  min-height: 88px;
  margin-top: -27px;
  padding: 9px 4px 7px;
  border: 2px solid var(--rm-bottom-nav-cyan);
  border-radius: 50%;
  aspect-ratio: 1;
  justify-self: center;
  width: min(88px, 100%);
  background: radial-gradient(circle at 30% 20%, #16c9ff, #6048ef 62%, #a52de1);
  box-shadow: 0 0 12px rgba(53,232,255,.75),
              0 0 24px rgba(141,85,255,.48),
              inset 0 1px 5px rgba(255,255,255,.5);
}

.rm-bottom-nav__item--featured-center .rm-bottom-nav__icon {
  width: 34px;
  height: 34px;
  color: #fff;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,.25));
}

.rm-bottom-nav__item:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

.rm-bottom-nav__item--featured-center:focus-visible {
  outline-offset: 4px;
}

@media (max-width: 360px) {
  .rm-bottom-nav {
    left: 6px;
    right: 6px;
    width: calc(100% - 12px);
    padding-inline: 4px;
    gap: 1px;
  }
  .rm-bottom-nav__icon { width: 28px; height: 28px; }
  .rm-bottom-nav__item--featured-center { min-height: 78px; width: 78px; }
  .rm-bottom-nav__label { font-size: 9px; }
}

@media (min-width: 900px) {
  .rm-bottom-nav { bottom: 14px; }
}

body.rm-has-bottom-nav {
  padding-bottom: calc(112px + env(safe-area-inset-bottom));
}