:root {
  --panel-border: #d9dee8;
  --reader-bg: #f8fafc;
}

body {
  min-height: 100vh;
  background: #f5f7fb;
}

.orientation-gate {
  display: none;
}

.action-card {
  border-radius: 8px;
  transition: border-color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.action-card:hover,
.action-card:focus {
  border-color: #86b7fe;
  box-shadow: 0 0.75rem 1.75rem rgba(21, 37, 64, 0.08);
  transform: translateY(-2px);
}

.selected-pill,
.toolbar-value {
  border: 1px solid var(--panel-border);
  border-radius: 999px;
  background: #fff;
  color: #495466;
  padding: 0.45rem 0.75rem;
}

.word-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 0.75rem;
}

.word-option {
  min-height: 3rem;
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  background: #fff;
  padding: 0.7rem 0.8rem;
}

.word-option .form-check-input {
  margin-top: 0.25rem;
}

.word-remove {
  flex: 0 0 auto;
}

.reader-panel {
  height: clamp(180px, 32vh, 320px);
  overflow: hidden;
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  background: var(--reader-bg);
  cursor: pointer;
  display: flex;
  align-items: center;
}

.reader-panel:focus {
  outline: 0.25rem solid rgba(13, 110, 253, 0.25);
  outline-offset: 0.15rem;
}

.scroll-track {
  display: inline-flex;
  align-items: center;
  gap: 2.5rem;
  white-space: nowrap;
  will-change: transform;
  padding-inline: 100%;
}

.scroll-word {
  font-weight: 700;
  color: #172033;
}

@media (max-width: 920px) and (orientation: landscape) {
  body {
    min-height: 100svh;
  }

  .navbar {
    --bs-navbar-padding-y: 0.25rem;
  }

  .navbar-brand {
    font-size: 1rem;
  }

  .nav-link {
    padding-block: 0.25rem;
  }

  .app-content {
    padding-block: 0.65rem !important;
  }

  .display-5 {
    font-size: 1.75rem;
  }

  .lead,
  p {
    font-size: 0.95rem;
  }

  .h2,
  h1.h2 {
    font-size: 1.3rem;
  }

  .h4,
  h2.h4,
  .h5,
  h2.h5 {
    font-size: 1rem;
  }

  .btn {
    --bs-btn-padding-y: 0.3rem;
    --bs-btn-padding-x: 0.55rem;
    --bs-btn-font-size: 0.9rem;
  }

  .card-body {
    padding: 0.75rem;
  }

  .word-grid {
    grid-template-columns: repeat(auto-fill, minmax(118px, 1fr));
    gap: 0.45rem;
    max-height: calc(100svh - 8.5rem);
    overflow: auto;
    padding-right: 0.15rem;
  }

  .word-option {
    min-height: 2.35rem;
    padding: 0.45rem 0.5rem;
    font-size: 0.9rem;
  }

  .word-remove {
    --bs-btn-padding-y: 0.15rem;
    --bs-btn-padding-x: 0.35rem;
    --bs-btn-font-size: 0.75rem;
  }

  #newWordInput {
    min-height: calc(100svh - 11.5rem);
    font-size: 0.9rem;
  }

  .selected-pill,
  .toolbar-value {
    padding: 0.3rem 0.55rem;
    font-size: 0.9rem;
  }

  .reader-toolbar {
    margin-bottom: 0.55rem !important;
  }

  .reader-panel {
    height: calc(100svh - 8.75rem);
    min-height: 145px;
  }

  body.reader-fullscreen-active {
    overflow: hidden;
    background: var(--reader-bg);
  }

  body.reader-fullscreen-active .navbar,
  body.reader-fullscreen-active .reader-toolbar,
  body.reader-fullscreen-active main > .d-flex,
  body.reader-fullscreen-active #emptyState {
    display: none !important;
  }

  body.reader-fullscreen-active .app-content {
    width: 100vw;
    max-width: none;
    height: 100svh;
    padding: 0 !important;
    margin: 0;
  }

  body.reader-fullscreen-active .reader-panel {
    position: fixed;
    inset: 0;
    z-index: 1040;
    width: 100vw;
    height: 100svh;
    min-height: 0;
    border: 0;
    border-radius: 0;
  }

  body.reader-fullscreen-active .reader-panel:focus {
    outline: 0;
  }

  body.reader-fullscreen-active .scroll-track {
    gap: 2rem;
  }

  .scroll-track {
    gap: 1.5rem;
  }
}

@media (max-width: 920px) and (orientation: portrait) {
  body {
    overflow: hidden;
  }

  .app-shell {
    display: none;
  }

  .orientation-gate {
    position: fixed;
    inset: 0;
    z-index: 1050;
    display: grid;
    place-items: center;
    background: #f5f7fb;
    padding: 1rem;
  }

  .orientation-panel {
    width: min(100%, 22rem);
    border: 1px solid var(--panel-border);
    border-radius: 8px;
    background: #fff;
    padding: 1rem;
    text-align: center;
  }
}