/* MURAJI3 — mobile-first, RTL-friendly, dark default */
:root{
  --bg:#0f1220; --bg2:#171b2e; --card:#1e2338; --border:#2b3352;
  --text:#eef1ff; --text2:#9aa3c7; --accent:#7c5cff; --accent2:#38e07b;
  --danger:#ff5470; --radius:14px;
}
[data-theme="light"]{
  --bg:#f4f5fb; --bg2:#ffffff; --card:#ffffff; --border:#e2e5f0;
  --text:#171a2b; --text2:#5b6180; --accent:#6a4dff; --accent2:#1fa855;
}
*{ box-sizing:border-box; margin:0; padding:0; -webkit-tap-highlight-color:transparent; }
html,body{ height:100%; }
body{
  font-family:'Segoe UI', Tahoma, 'Noto Naskh Arabic', system-ui, sans-serif;
  background:var(--bg); color:var(--text);
  display:flex; justify-content:center;
}
#app{ width:100%; max-width:560px; min-height:100vh; display:flex; flex-direction:column; padding:env(safe-area-inset-top) 12px 24px; }

/* ---- topbar ---- */
.topbar{ display:flex; align-items:center; gap:8px; padding:12px 2px; }
.brand{ flex:1; display:flex; align-items:center; gap:8px; font-weight:700; letter-spacing:.04em; }
.brand__mark{ font-size:20px; }
.icon-btn{
  background:var(--card); border:1px solid var(--border); color:var(--text);
  border-radius:10px; min-width:38px; height:38px; padding:0 10px;
  font-size:16px; cursor:pointer;
}
.icon-btn:hover{ border-color:var(--accent); }

/* ---- stats ---- */
.stats{ display:grid; grid-template-columns:repeat(3,1fr); gap:8px; margin-bottom:18px; }
.stat{
  background:var(--card); border:1px solid var(--border); border-radius:var(--radius);
  padding:12px 8px; text-align:center;
}
.stat b{ display:block; font-size:22px; color:var(--accent2); }
.stat span{ font-size:11px; color:var(--text2); }

/* ---- sections ---- */
.section-head{ display:flex; align-items:center; gap:8px; margin:6px 0 10px; }
.section-head h2{ flex:1; font-size:16px; }
.section-head__btns{ display:flex; gap:6px; }

/* ---- decks ---- */
.deck-list{ display:flex; flex-direction:column; gap:8px; margin-bottom:10px; }
.deck-item{
  display:flex; align-items:center; justify-content:space-between; gap:10px;
  background:var(--card); border:1px solid var(--border); border-radius:var(--radius);
  padding:14px; color:var(--text); font-size:15px; cursor:pointer; text-align:start;
}
.deck-item--due{ border-color:var(--accent); }
.deck-item__name{ overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.deck-item__meta{ font-size:13px; color:var(--text2); flex:none; }
.deck-item__meta b{ color:var(--accent2); }

/* ---- buttons ---- */
.btn{
  border:none; border-radius:12px; padding:12px 16px;
  font-size:15px; font-weight:600; cursor:pointer; color:#fff;
}
.btn--primary{ background:var(--accent); }
.btn--primary:disabled{ opacity:.4; cursor:not-allowed; }
.btn--ghost{ background:transparent; color:var(--text2); border:1px solid var(--border); }
.btn--wide{ width:100%; }

/* ---- deck screen ---- */
.deck-meta{ font-size:13px; color:var(--text2); margin-bottom:10px; }
.card-list{ display:flex; flex-direction:column; gap:8px; margin:14px 0 10px; }
.card-item{
  display:flex; align-items:center; gap:8px;
  background:var(--card); border:1px solid var(--border); border-radius:var(--radius);
  padding:10px 12px;
}
.card-item__texts{ flex:1; min-width:0; display:flex; flex-direction:column; gap:2px; }
.card-item__texts .q{ font-size:14px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.card-item__texts .a{ font-size:12px; color:var(--text2); overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.card-item__btns{ display:flex; gap:4px; flex:none; }
.card-item__btns .icon-btn{ min-width:32px; height:32px; font-size:13px; border:none; background:transparent; }

.empty-msg{ color:var(--text2); font-size:14px; text-align:center; padding:22px 8px; }

/* ---- study ---- */
.study-top{ display:flex; align-items:center; justify-content:space-between; padding:4px 0 12px; }
.study-progress{ font-size:14px; color:var(--text2); }
.study-area{ display:flex; justify-content:center; padding:6px 0; }

.flip-card{
  width:100%; max-width:440px; min-height:240px; perspective:1200px; cursor:pointer;
}
.flip-inner{
  position:relative; width:100%; height:100%; min-height:240px;
  transition:transform .45s cubic-bezier(.2,.7,.3,1);
  transform-style:preserve-3d;
}
.flip-card.flipped .flip-inner{ transform:rotateY(180deg); }
.flip-face{
  position:absolute; inset:0;
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  gap:12px; padding:22px; border-radius:18px; text-align:center;
  backface-visibility:hidden; -webkit-backface-visibility:hidden;
}
.flip-front{ background:linear-gradient(145deg,var(--card),var(--bg2)); border:1px solid var(--border); }
.flip-back{ background:linear-gradient(145deg,var(--accent),#4a3bd4); transform:rotateY(180deg); }
.flip-label{ font-size:11px; letter-spacing:.12em; text-transform:uppercase; color:var(--text2); }
.flip-back .flip-label{ color:rgba(255,255,255,.7); }
.flip-face p{ font-size:19px; line-height:1.6; overflow-wrap:anywhere; }
.tap-hint{ font-size:11px; color:var(--text2); }

.srs-row{ display:grid; grid-template-columns:repeat(4,1fr); gap:8px; margin-top:16px; }
.srs{
  border:none; border-radius:12px; padding:10px 4px; cursor:pointer;
  display:flex; flex-direction:column; gap:2px; align-items:center; color:#fff;
}
.srs b{ font-size:13px; }
.srs small{ font-size:11px; opacity:.85; }
.srs--again{ background:var(--danger); }
.srs--hard{ background:#e08a3c; }
.srs--good{ background:#3d9e57; }
.srs--easy{ background:var(--accent); }

.study-done{ text-align:center; padding:40px 10px; display:flex; flex-direction:column; gap:14px; align-items:center; }
.study-done__emoji{ font-size:52px; }
.study-done p{ color:var(--text2); }

/* ---- modal ---- */
.modal{
  position:fixed; inset:0; background:rgba(5,8,20,.6); backdrop-filter:blur(3px);
  display:flex; align-items:center; justify-content:center; padding:18px; z-index:50;
}
.modal__box{
  background:var(--bg2); border:1px solid var(--border); border-radius:16px;
  width:100%; max-width:420px; padding:18px;
}
.modal__box h3{ font-size:16px; margin-bottom:12px; }
.modal__box label{ display:block; font-size:12px; color:var(--text2); margin:10px 0 4px; }
.txt{
  width:100%; background:var(--card); border:1px solid var(--border); border-radius:10px;
  color:var(--text); padding:10px 12px; font-size:15px; font-family:inherit; resize:vertical;
}
.txt:focus{ outline:none; border-color:var(--accent); }
.modal__btns{ display:flex; gap:8px; justify-content:flex-end; margin-top:16px; }

/* ---- toast ---- */
.toast{
  position:fixed; bottom:20px; left:50%; transform:translateX(-50%);
  background:var(--accent); color:#fff; border-radius:20px;
  padding:10px 20px; font-size:14px; z-index:60; box-shadow:0 6px 20px rgba(0,0,0,.35);
}

@media (max-width:380px){
  .srs b{ font-size:12px; }
  .stats{ gap:6px; }
}