/* ============================================
   LessonEye — Engine Page
   ============================================ */

.engine-wrap {
  max-width: 920px;
  margin: 0 auto;
  padding: 32px 20px 100px;
}
.engine-head { text-align: center; margin-bottom: 32px; }
.engine-head h1 {
  font-family: 'Fraunces', 'Tajawal', serif;
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  font-weight: 500;
  letter-spacing: -.02em;
  color: var(--plat);
  margin-bottom: 8px;
}
body.ar .engine-head h1 { font-family: 'Tajawal', serif; font-weight: 700; }
.engine-head h1 em {
  font-style: italic;
  background: linear-gradient(135deg, var(--gold-hi), var(--gold-lo));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
body.ar .engine-head h1 em { font-style: normal; }
.engine-head p { color: var(--plat3); font-size: .92rem; }

/* Autosave indicator */
.autosave-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .72rem;
  color: var(--plat3);
  background: rgba(56,214,161,.08);
  border: 1px solid rgba(56,214,161,.2);
  padding: 4px 10px;
  border-radius: 999px;
  margin-top: 10px;
}
.autosave-pill .d { width: 5px; height: 5px; border-radius: 50%; background: var(--ok); }

/* Stepper */
.steps {
  display: flex;
  gap: 4px;
  margin-bottom: 24px;
  background: var(--onyx);
  border: 1px solid rgba(212,175,55,.14);
  border-radius: var(--r);
  padding: 4px;
}
.st {
  flex: 1;
  padding: 12px 6px;
  text-align: center;
  border-radius: 10px;
  cursor: pointer;
  font-size: .82rem;
  font-weight: 600;
  color: var(--plat3);
  transition: .25s var(--ease);
}
.st.on {
  background: linear-gradient(135deg, var(--gold), var(--gold-lo));
  color: var(--obsidian);
  box-shadow: 0 3px 12px rgba(212,175,55,.3);
}
.st.dn { color: var(--ok); }

.pnl { display: none; }
.pnl.on { display: block; animation: fadeUp .35s ease; }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Form controls */
.f { margin-bottom: 14px; }
.fl { font-size: .78rem; font-weight: 600; margin-bottom: 6px; color: var(--plat2); }
.fl .req { color: var(--err); font-size: .7rem; }
.sl, .ip, .tx {
  width: 100%;
  padding: 12px 15px;
  background: var(--onyx);
  border: 1px solid rgba(212,175,55,.15);
  border-radius: 10px;
  color: var(--plat);
  font-size: .9rem;
  font-family: inherit;
  transition: .2s;
}
.sl:focus, .ip:focus, .tx:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(212,175,55,.1);
}
.sl {
  appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23d4af37' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 15px center;
  padding-right: 36px;
}
body.ar .sl { background-position: left 15px center; padding-right: 15px; padding-left: 36px; }
.sl option { background: var(--onyx); color: var(--plat); }
.ip::placeholder, .tx::placeholder { color: var(--plat4); }
.tx { resize: vertical; min-height: 64px; line-height: 1.6; }
.rw { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.rw3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }
@media (max-width: 640px) { .rw, .rw3 { grid-template-columns: 1fr; } }

/* Category cards */
.cat {
  background: var(--onyx);
  border: 1px solid rgba(212,175,55,.14);
  border-radius: var(--r);
  margin-bottom: 12px;
  overflow: hidden;
  transition: .25s var(--ease);
}
.cat.has-active { border-color: rgba(212,175,55,.4); box-shadow: 0 4px 18px rgba(212,175,55,.08); }
.cat-top {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  cursor: pointer;
  user-select: none;
  transition: .15s;
}
.cat-top:hover { background: var(--coal); }
.cat-icon { font-size: 1.4rem; flex-shrink: 0; }
.cat-info { flex: 1; min-width: 0; }
.cat-name { font-size: .96rem; font-weight: 700; color: var(--plat); }
.cat-count { font-size: .72rem; color: var(--plat3); margin-top: 2px; }
.cat-badge {
  font-size: .7rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--gold-soft);
  color: var(--gold);
  border: 1px solid rgba(212,175,55,.25);
  flex-shrink: 0;
  display: none;
}
.cat.has-active .cat-badge { display: inline-block; }
.cat-chev { color: var(--plat3); font-size: .76rem; transition: .3s; flex-shrink: 0; }
.cat.open .cat-chev { transform: rotate(180deg); color: var(--gold); }
.cat-body { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
.cat.open .cat-body { max-height: 5000px; }
.cat-inner { padding: 4px 20px 20px; }

/* Items */
.si {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
  margin-bottom: 6px;
  background: var(--coal);
  border: 1px solid transparent;
  border-radius: 10px;
  transition: .2s;
  cursor: pointer;
}
.si:hover { border-color: rgba(212,175,55,.15); }
.si.on {
  background: linear-gradient(90deg, rgba(212,175,55,.08), rgba(212,175,55,.02));
  border-color: rgba(212,175,55,.3);
}
.si-check {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  border: 2px solid rgba(212,175,55,.25);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
  transition: .2s;
  color: transparent;
  font-size: .7rem;
}
.si.on .si-check {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--obsidian);
}
.si-info { flex: 1; min-width: 0; }
.si-name { font-size: .88rem; font-weight: 600; color: var(--plat); }
.si-input { margin-top: 8px; display: none; }
.si.on .si-input { display: block; }
.si-input .tx {
  font-size: .84rem;
  padding: 9px 13px;
  min-height: 56px;
  background: var(--obsidian);
}
.si-hint { font-size: .7rem; color: var(--plat4); margin-top: 4px; font-style: italic; }

.sel-all {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 8px;
  font-size: .76rem;
  font-weight: 600;
  border: 1px solid rgba(212,175,55,.2);
  background: transparent;
  color: var(--plat3);
  transition: .2s;
  margin-bottom: 12px;
  cursor: pointer;
}
.sel-all:hover { border-color: var(--gold); color: var(--gold); }

/* Output box — Cyber-stream terminal */
.obox {
  background: var(--void);
  border: 1px solid rgba(212,175,55,.2);
  border-radius: var(--r);
  overflow: hidden;
  margin-top: 20px;
  box-shadow: 0 10px 30px rgba(0,0,0,.3);
}
.ohead {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  border-bottom: 1px solid rgba(212,175,55,.12);
  background: var(--obsidian);
  gap: 10px;
  flex-wrap: wrap;
}
.ohead-left { display: flex; align-items: center; gap: 12px; }
.ohead-dots { display: flex; gap: 5px; }
.ohead-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.ohead-dots span:nth-child(1) { background: var(--err); }
.ohead-dots span:nth-child(2) { background: var(--gold); }
.ohead-dots span:nth-child(3) { background: var(--ok); }
.ohead h3 { color: var(--plat); font-size: .92rem; font-weight: 700; }
.ohead-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.cbtn {
  background: linear-gradient(135deg, var(--gold), var(--gold-lo));
  color: var(--obsidian);
  padding: 9px 18px;
  border-radius: 8px;
  font-size: .78rem;
  font-weight: 700;
  transition: .25s var(--ease);
}
.cbtn:hover { transform: translateY(-1px); box-shadow: 0 4px 14px rgba(212,175,55,.35); }
.cbtn.sec {
  background: rgba(255,255,255,.04);
  color: var(--gold);
  border: 1px solid rgba(212,175,55,.25);
}
.cbtn.sec:hover { background: var(--gold-soft); }

.obody {
  padding: 22px;
  font-family: 'JetBrains Mono', 'Sora', monospace;
  font-size: .84rem;
  line-height: 1.9;
  color: var(--plat2);
  white-space: pre-wrap;
  max-height: 520px;
  overflow-y: auto;
  position: relative;
}
.obody::-webkit-scrollbar { width: 6px; }
.obody::-webkit-scrollbar-track { background: var(--obsidian); }
.obody::-webkit-scrollbar-thumb { background: rgba(212,175,55,.2); border-radius: 3px; }
body.ar .obody { font-family: 'Tajawal', monospace; }

/* Cyber-stream cursor */
.obody.streaming::after {
  content: '▊';
  color: var(--gold);
  animation: blink 1s infinite;
  margin-left: 2px;
}
@keyframes blink { 0%,49% { opacity: 1; } 50%,100% { opacity: 0; } }

/* Watermark strip at bottom of output */
.watermark {
  padding: 10px 20px;
  background: var(--obsidian);
  border-top: 1px solid rgba(212,175,55,.1);
  font-size: .7rem;
  color: var(--plat4);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.watermark strong {
  background: linear-gradient(135deg, var(--gold-hi), var(--gold-lo));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.owc { text-align: center; margin-top: 10px; font-size: .78rem; color: var(--plat3); }

/* Engine buttons row */
.ebtn {
  padding: 12px 22px;
  border-radius: var(--r);
  font-size: .88rem;
  font-weight: 700;
  font-family: inherit;
  transition: .25s var(--ease);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
}
.bp { background: linear-gradient(135deg, var(--gold), var(--gold-lo)); color: var(--obsidian); box-shadow: 0 3px 14px rgba(212,175,55,.25); }
.bp:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(212,175,55,.4); }
.bg { background: linear-gradient(135deg, var(--elec), #0097c7); color: var(--obsidian); box-shadow: 0 3px 14px rgba(0,212,255,.25); }
.bg:hover { transform: translateY(-2px); }
.bo {
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(212,175,55,.25);
  color: var(--plat);
}
.bo:hover { border-color: var(--gold); color: var(--gold); background: var(--gold-fade); }
.bgo {
  background: linear-gradient(135deg, var(--gold-hi), var(--gold));
  color: var(--obsidian);
  box-shadow: 0 3px 14px rgba(241,207,107,.3);
  position: relative;
  overflow: hidden;
}
.bgo::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.4), transparent);
  animation: shine 3s infinite;
}
@keyframes shine { 0% { left: -100%; } 100% { left: 100%; } }

.brow {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 26px;
  flex-wrap: wrap;
}
body.ar .brow { justify-content: flex-start; }
@media (max-width: 600px) {
  .brow { justify-content: stretch; }
  .brow .ebtn { flex: 1; }
  .steps { flex-wrap: wrap; }
  .st { min-width: 33%; }
}

/* Export panel */
.export-panel {
  margin-top: 14px;
  padding: 16px;
  background: var(--onyx);
  border: 1px solid rgba(212,175,55,.15);
  border-radius: var(--r);
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}
.export-panel .ebtn { font-size: .82rem; padding: 10px 16px; }