/* أسلوب واضح وزاهي */
:root{
  --bg:#fff9f2;
  --card:#ffffff;
  --text:#222;
  --accent:#ff8a65;
  --gap:12px;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);padding-bottom:80px}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:linear-gradient(90deg,#ffd180,#ff8a65);color:#fff}
h1{margin:0;font-size:20px}
.subjects-section{padding:16px}
.subjects-list{display:flex;flex-direction:column;gap:12px}

/* subject item */
.subject-item{display:flex;align-items:center;justify-content:space-between;padding:12px;border-radius:12px;box-shadow:0 6px 18px rgba(0,0,0,0.06);color:#fff}
.subject-left{display:flex;gap:12px;align-items:center}
.subject-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,0.2)}
.subject-name{font-weight:700}
.subject-level{font-size:12px;opacity:.9}

/* fab */
.fab{position:fixed;bottom:22px;right:18px;background:var(--accent);border:none;color:#fff;width:64px;height:64px;border-radius:50%;font-size:28px;box-shadow:0 8px 24px rgba(0,0,0,0.15)}
.fab.small{width:48px;height:48px;font-size:22px;right:26px}

/* modal */
.modal{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,0.35);padding:16px}
.modal-card{background:var(--card);padding:16px;border-radius:12px;width:100%;max-width:520px;direction:rtl}
.icon-grid{display:flex;gap:8px;flex-wrap:wrap}
.icon-btn{width:48px;height:48px;border-radius:8px;display:flex;align-items:center;justify-content:center;border:2px solid transparent;cursor:pointer}
.icon-btn.selected{border-color:#333}

/* subject view */
.panel{position:fixed;inset:0;background:var(--bg);z-index:20;padding:0;display:flex;flex-direction:column}
.subject-header{display:flex;align-items:center;justify-content:space-between;padding:12px;background:#fff;box-shadow:0 4px 10px rgba(0,0,0,0.05)}
.tabs{display:flex;gap:6px;padding:10px;background:transparent}
.tab{flex:1;padding:10px;border-radius:8px;border:none;font-weight:700}
.tab-green{background:#dff8e0;color:#1b5e20}
.tab-blue{background:#e1f0ff;color:#013a63}
.tab-red{background:#ffe7e7;color:#7b0000}
.tab-yellow{background:#fff7d6;color:#6a4a00}
.tab.active{outline:3px solid rgba(0,0,0,0.06)}

/* content */
.cards-grid{display:flex;flex-wrap:wrap;gap:10px;padding:12px}
.note-card{width:140px;height:120px;padding:10px;border-radius:10px;background:#fff;box-shadow:0 6px 14px rgba(0,0,0,0.06);cursor:pointer;overflow:hidden}
.list-vertical{display:flex;flex-direction:column;gap:10px;padding:12px}
.image-grid{display:flex;flex-wrap:wrap;gap:8px;padding:12px}
.image-grid img{width:120px;height:120px;object-fit:cover;border-radius:8px;cursor:pointer}

/* hidden */
.hidden{display:none}

/* responsive */
@media(min-width:720px){
  .subjects-list{flex-direction:row;flex-wrap:wrap}
  .subject-item{width:320px}
}