@import url('https://fonts.googleapis.com/css2?family=Sarabun:wght@400;600;700&display=swap');*{box-sizing:border-box}body{margin:0;font-family:Sarabun,system-ui,sans-serif;background:#f6f8fb;color:#18324a}.top{position:sticky;top:0;z-index:5;background:white;border-bottom:1px solid #e6edf5;display:flex;justify-content:space-between;gap:12px;align-items:center;padding:14px 22px;box-shadow:0 4px 20px #00000008}.top small{display:block;color:#6b7b8c}.top nav{display:flex;gap:8px;flex-wrap:wrap}.top a,.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:14px;padding:10px 14px;text-decoration:none;border:1px solid #d7e3ef;background:white;color:#17324d;font-weight:700}.btn.primary{background:#1967d2;color:white;border-color:#1967d2}.btn.small{padding:7px 10px;font-size:.9rem}main{max-width:1180px;margin:auto;padding:22px}.hero{background:linear-gradient(135deg,#eaf4ff,#fff);border:1px solid #dcecff;border-radius:26px;padding:30px;margin-bottom:18px}.hero h1{font-size:clamp(1.6rem,4vw,2.8rem);margin:0 0 8px}.actions{display:flex;gap:10px;flex-wrap:wrap}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin:16px 0}.card,.panel{background:white;border:1px solid #e1e9f2;border-radius:22px;padding:18px;box-shadow:0 10px 30px #19415f0a}.card b{font-size:2rem;display:block}.card span,.muted,small{color:#718093}.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:14px}.form{display:grid;gap:12px}.form label{display:grid;gap:6px;font-weight:700}.form input,.form select,.form textarea{font:inherit;padding:12px;border:1px solid #cad8e6;border-radius:14px;background:#fbfdff}.tablewrap{overflow:auto}table{width:100%;border-collapse:separate;border-spacing:0 8px}th{text-align:left;color:#607286;font-size:.9rem}td{background:#fbfdff;padding:12px;border-top:1px solid #edf2f7;border-bottom:1px solid #edf2f7}td:first-child{border-radius:14px 0 0 14px;border-left:1px solid #edf2f7}td:last-child{border-radius:0 14px 14px 0;border-right:1px solid #edf2f7}td a{font-weight:700;color:#164f9f;text-decoration:none}td small{display:block}.good{color:#138a4b}.bad{color:#c62828}.pill{border-radius:999px;padding:5px 10px;font-weight:700;white-space:nowrap}.pill.ok{background:#e6f7ef;color:#087443}.pill.warn{background:#fff4d6;color:#8a6100}.pill.danger{background:#ffe8e8;color:#bd1e1e}.timeline{display:grid;gap:10px}.timeline>div,.task{border:1px solid #edf2f7;border-radius:16px;background:#fbfdff;padding:14px;margin:8px 0}footer{text-align:center;color:#789;padding:20px}@media(max-width:640px){.top{align-items:flex-start;flex-direction:column}main{padding:12px}td,th{font-size:.9rem}.grid2{grid-template-columns:1fr}}
.evidence{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}.evidence img{width:120px;height:90px;object-fit:cover;border-radius:14px;border:1px solid #d8e3ee;background:#fff;box-shadow:0 4px 14px #00000012}.form input[type=file]{background:#fff;border-style:dashed}.form small{font-weight:400}
.student-tools{display:grid;gap:6px;margin:10px 0 14px}.student-tools input{width:100%;font:inherit;padding:14px 16px;border:1px solid #cad8e6;border-radius:16px;background:#fbfdff}.class-groups{display:grid;gap:12px}.class-group{background:#fbfdff;border:1px solid #e1e9f2;border-radius:18px;overflow:hidden}.class-group summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:12px;align-items:center;padding:14px 16px;background:linear-gradient(135deg,#ffffff,#f7fbff)}.class-group summary::-webkit-details-marker{display:none}.class-group summary b{font-size:1.2rem}.class-stats{display:flex;gap:8px;align-items:center;flex-wrap:wrap;justify-content:flex-end;color:#66788a;font-size:.9rem}.student-list{display:grid;gap:8px;padding:10px}.student-row{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center;padding:12px;border:1px solid #edf2f7;border-radius:16px;background:white;text-decoration:none;color:#18324a}.student-main b{color:#164f9f}.student-main small{display:block}.score-mini{display:flex;gap:10px;align-items:center;white-space:nowrap}.score-mini strong{font-size:1.05rem}.score-mini em{font-style:normal;font-size:.82rem}@media(max-width:640px){.class-group summary{align-items:flex-start;flex-direction:column}.class-stats{justify-content:flex-start}.student-row{grid-template-columns:1fr}.score-mini{justify-content:space-between;background:#f7fafc;border-radius:12px;padding:8px}.student-list{padding:8px}.student-tools input{font-size:16px}}
/* Desktop polish for grouped student list */
.class-groups{grid-template-columns:1fr}.class-group{display:block}.class-group summary{min-height:72px}.class-group summary>div:first-child{display:grid;gap:2px}.student-list{grid-template-columns:repeat(auto-fill,minmax(360px,1fr));align-items:stretch}.student-row{grid-template-columns:minmax(0,1fr) auto!important;min-height:76px;box-shadow:0 4px 16px #17324a0a}.student-row:visited,.student-row:hover{text-decoration:none}.student-main{min-width:0}.student-main b{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:1.35}.student-main small{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.score-mini{justify-content:flex-end;min-width:210px}.score-mini span,.score-mini strong,.score-mini em{display:inline-flex;align-items:center;justify-content:center}.score-mini strong{min-width:44px;background:#eef5ff;border-radius:999px;padding:4px 8px;color:#164f9f}.score-mini .pill{min-width:58px}@media(max-width:760px){.student-list{grid-template-columns:1fr}.student-row{grid-template-columns:1fr!important}.score-mini{min-width:0;justify-content:space-between}.student-main b,.student-main small{white-space:normal}}