*{box-sizing:border-box}body{margin:0;font-family:'Tajawal',system-ui,Segoe UI,Arial; background:#f4e0cf;color:#2c2c2c}
.app-bar{position:sticky;top:0;background:#5b2dd6;color:#fff;padding:18px 16px;border-bottom-left-radius:18px;border-bottom-right-radius:18px}
.app-bar h1{margin:0;font-size:32px;font-weight:800;display:flex;align-items:center;gap:8px}
.logo{filter:drop-shadow(0 1px 0 rgba(0,0,0,.2))}
.search{width:100%;margin-top:12px;padding:12px 14px;border:none;border-radius:12px;font-size:16px}
.screen{display:none;padding:16px}
.screen.active{display:block}
.subjects{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px;margin-top:8px}
.card{border-radius:20px;padding:22px 18px;min-height:140px;color:#fff;position:relative;box-shadow:0 8px 20px rgba(0,0,0,.15);background:linear-gradient(135deg, rgba(255,255,255,.15), rgba(0,0,0,.05));overflow:hidden}
.card .emoji{font-size:42px;position:absolute;right:14px;top:14px;opacity:.9}
.card h3{margin:64px 0 0;font-size:24px}
.card .mood{position:absolute;left:14px;bottom:14px;font-size:24px}
.card:active{transform:scale(.98)}
.fab{position:fixed;right:16px;bottom:16px;border:none;border-radius:18px;padding:14px 18px;font-size:18px;color:#fff;box-shadow:0 10px 20px rgba(0,0,0,.25);cursor:pointer}
.fab-main{background:#5b2dd6}
.subject-header{display:flex;align-items:center;gap:12px;margin:6px 4px 8px}
.back{border:none;border-radius:10px;padding:8px 10px;background:#ffd1d1}
.subject-title{display:flex;align-items:center;gap:10px}
.subject-emoji{font-size:28px}
.mood{font-size:22px}
.tabs{display:flex;gap:8px;margin:6px 0 10px;padding:4px}
.tab{flex:1;border:none;border-radius:14px;padding:10px;background:#f0d2c0}
.tab.active{background:#ffe3f8;border:2px solid #d29fe6}
.tab-body{display:none;min-height:50vh;position:relative}
.tab-body.active{display:block}
.list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.note{background:#fff;border-radius:14px;padding:12px;box-shadow:0 4px 12px rgba(0,0,0,.1)}
.files-grid,.images-grid,.audio-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:12px}
.file-card,.img-card,.audio-card{background:#fff;border-radius:14px;padding:10px;box-shadow:0 4px 12px rgba(0,0,0,.1);position:relative}
.file-title{font-weight:700;margin-top:6px;font-size:14px}
.file-ext{opacity:.7;font-size:12px}
.img-card img{width:100%;height:120px;object-fit:cover;border-radius:10px}
.audio-card audio{width:100%}
.empty{opacity:.6;text-align:center;margin:40px 0}
.dialog{border:none;border-radius:16px;padding:16px;max-width:480px;width:92%}
.dialog form{display:flex;flex-direction:column;gap:10px}
.dialog input,.dialog textarea{padding:10px;border-radius:10px;border:1px solid #ddd}
.dialog menu{display:flex;gap:10px;justify-content:flex-end}
.emoji-row, .color-row{display:flex;flex-wrap:wrap;gap:8px}
.emoji-row button{font-size:24px;padding:8px 10px;border-radius:10px;border:1px solid #ddd;background:#fff;cursor:pointer}
.color-row button{width:34px;height:34px;border:none;border-radius:50%;cursor:pointer;outline:2px solid rgba(255,255,255,.7)}
.trash-bar{position:fixed;top:0;left:0;right:0;height:54px;background:linear-gradient(90deg,#ff5e5e,#00bcd4);display:none;align-items:center;justify-content:center;gap:12px;color:#fff;z-index:5}
.trash-bar.show{display:flex}
.trash{border:none;background:#00000022;padding:8px 12px;border-radius:10px;color:#fff}
.cancel{border:none;background:#ffffff44;padding:8px 12px;border-radius:10px;color:#fff}
/* FAB colors per tab */
.fab-notes{background:#7E57C2}
.fab-files{background:#0288D1}
.fab-images{background:#43A047}
.fab-audio{background:#F4511E}
.selecting .selectable{outline:3px dashed #ff8a80}
.selectable.selected{outline:3px solid #ff1744;background:#fff0f0}
.kebab{position:absolute;top:8px;left:8px;background:#ffffffdd;border:none;border-radius:10px;padding:4px 8px;display:none}
.file-card:hover .kebab, .img-card:hover .kebab, .audio-card:hover .kebab, .note:hover .kebab{display:block}