/* ── App shell ──────────────────────────────────────────── */
#app { width: 100vw; min-height: 100vh; }

/* ── Sticky headers (home / editor / selector) ──────────── */
.home-header, .editor-header, .selector-header {
  display: flex; align-items: center;
  padding: 1.5rem 4rem;
  background: rgba(0,0,0,0.35); backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  position: sticky; top: 0; z-index: 100;
}
.home-header     { justify-content: space-between; }
.editor-header   { justify-content: space-between; gap: 2.5rem; }
.selector-header { gap: 2.5rem; }

.logo-mark {
  display: flex; align-items: center; justify-content: center;
  width: 44px; height: 44px;
  background: var(--bs-primary); border-radius: 12px; font-size: 1.2rem;
}
.logo-name { font-size: var(--ep-lg); font-weight: 800; letter-spacing: -0.02em; }

/* ── Home activities grid ───────────────────────────────── */
.home-body { flex: 1; padding: 4rem; max-width: 1400px; margin: 0 auto; width: 100%; }
.activities-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px,1fr)); gap: 2.5rem;
}
.activity-card {
  cursor: pointer; transition: border-color 150ms ease, transform 150ms ease;
}
.activity-card:hover { border-color: var(--bs-primary) !important; transform: translateY(-3px); }

.card-template-badge {
  display: inline-block; background: rgba(74,144,226,0.2); color: var(--bs-primary);
  font-size: var(--ep-sm); font-weight: 700; padding: 3px 10px; border-radius: 999px;
}
.card-title    { font-size: var(--ep-lg); font-weight: 700; line-height: 1.2; }
.card-subtitle { font-size: var(--ep-sm); color: rgba(255,255,255,0.55); }
.card-meta     { font-size: var(--ep-sm); color: rgba(255,255,255,0.55); }

.empty-state { min-height: 50vh; }
.empty-icon  { font-size: 5rem; }

/* ── Template selector ──────────────────────────────────── */
.template-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(260px,1fr));
  gap: 2.5rem; padding: 4rem; max-width: 1200px; margin: 0 auto; width: 100%;
}
.template-card {
  cursor: pointer; position: relative;
  transition: border-color 150ms ease, transform 150ms ease;
}
.template-card:not([disabled]):hover { border-color: var(--bs-primary) !important; transform: translateY(-4px); }
.template-card--soon { opacity: 0.5; cursor: not-allowed; }
.tpl-icon { font-size: 3.5rem; line-height: 1; }
.tpl-name { font-size: var(--ep-lg); font-weight: 700; }
.tpl-desc { font-size: var(--ep-sm); color: rgba(255,255,255,0.55); }
.tpl-soon-badge {
  position: absolute; top: 1rem; right: 1rem;
  background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.55); font-size: 0.75rem; padding: 2px 8px; border-radius: 999px;
}

/* ── Editor body ────────────────────────────────────────── */
.editor-body {
  flex: 1; padding: 4rem; max-width: 900px; margin: 0 auto;
  width: 100%; display: flex; flex-direction: column; gap: 4rem;
}
.editor-section { display: flex; flex-direction: column; gap: 1.5rem; }
.section-label {
  font-size: var(--ep-base); font-weight: 700;
  color: rgba(255,255,255,0.55); text-transform: uppercase; letter-spacing: 0.08em;
  padding-bottom: 0.5rem; border-bottom: 1px solid rgba(255,255,255,0.1);
}
.section-hint { font-size: var(--ep-sm); color: rgba(255,255,255,0.55); }
.required { color: var(--ep-wrong); }

/* Bootstrap form-control dark overrides */
.form-control, .form-select {
  background: rgba(255,255,255,0.07) !important;
  border-color: rgba(255,255,255,0.1) !important;
  color: #fff !important; font-size: var(--ep-base) !important;
}
.form-select option { background: #1e2433; color: #fff; }
.form-control:focus, .form-select:focus {
  border-color: var(--bs-primary) !important; box-shadow: none !important;
}
.form-control::placeholder { color: rgba(255,255,255,0.35) !important; }
.form-label { font-size: var(--ep-sm); font-weight: 600; color: rgba(255,255,255,0.55); }
.form-check-label { font-size: var(--ep-sm); }
.field-input--sm { width: 100px; }
.config-row { display: flex; flex-wrap: wrap; align-items: center; gap: 2.5rem; }

/* ── Question cards ─────────────────────────────────────── */
.question-card {
  background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.1);
  border-radius: 20px; padding: 2.5rem; margin-bottom: 1.5rem;
}
.q-number { font-size: var(--ep-base); font-weight: 700; color: var(--bs-primary); }
.q-hint   { font-size: var(--ep-sm); color: rgba(255,255,255,0.55); }

.options-grid { display: flex; flex-direction: column; gap: 1rem; }
.option-row   { display: flex; align-items: center; gap: 1rem; }
.opt-radio    { width: 20px; height: 20px; cursor: pointer; accent-color: var(--ep-correct); flex-shrink: 0; }
.opt-letter {
  display: flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; background: rgba(255,255,255,0.1);
  border-radius: 50%; font-size: var(--ep-sm); font-weight: 800; flex-shrink: 0;
}
.option-row:has(.opt-radio:checked) .opt-letter   { background: var(--ep-correct); }
.option-row:has(.opt-radio:checked) .form-control { border-color: var(--ep-correct) !important; }

/* Insert-blank button next to the original textarea in textCorrection editor */
.btn-insert-blank {
  flex-shrink: 0; width: 42px; align-self: flex-start; margin-top: 2px;
  background: rgba(74,144,226,0.15); border: 1px solid rgba(74,144,226,0.35);
  border-radius: 8px; color: var(--bs-primary); font-size: 1.4rem;
  cursor: pointer; padding: 0.35rem; transition: background 150ms ease;
  line-height: 1;
}
.btn-insert-blank:hover { background: rgba(74,144,226,0.3); }

.btn-add-question {
  display: flex; align-items: center; justify-content: center; gap: 1rem;
  width: 100%; padding: 1.5rem;
  background: transparent; border: 2px dashed rgba(255,255,255,0.1);
  border-radius: 20px; color: rgba(255,255,255,0.55);
  font-size: var(--ep-base); font-weight: 600; cursor: pointer;
  transition: border-color 150ms ease, color 150ms ease;
}
.btn-add-question:hover { border-color: var(--bs-primary); color: var(--bs-primary); }

.editor-error {
  background: var(--ep-wrong-bg); border: 1px solid var(--ep-wrong);
  border-radius: 10px; padding: 1.5rem; color: var(--ep-wrong); font-size: var(--ep-sm);
}