:root{
  --navy:#1a2a4f; --navy-dark:#11203f; --gold:#c9a227; --gold-light:#e3c75a;
  --bg:#f4f6fb; --card:#fff; --line:#e2e6ee; --text:#222a3a; --muted:#6b7280;
  --green:#1f9d55; --red:#d64545;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Sarabun',sans-serif;background:var(--bg);color:var(--text);line-height:1.55}
a{color:var(--navy);text-decoration:none}
.topbar{background:var(--navy);color:#fff;display:flex;justify-content:space-between;align-items:center;padding:0 24px;height:60px;box-shadow:0 2px 8px rgba(0,0,0,.15)}
.brand a{color:#fff}
.logo{font-size:22px;font-weight:700;letter-spacing:.5px}
.logo b{color:var(--gold)}
.topnav{display:flex;align-items:center;gap:18px}
.topnav a{color:#dbe2f1;font-size:15px}
.topnav a:hover{color:#fff}
.usr{color:var(--gold-light);font-weight:600}
.btn-logout{background:rgba(255,255,255,.12);padding:6px 14px;border-radius:6px}
.container{max-width:1180px;margin:28px auto;padding:0 20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:24px;margin-bottom:22px;box-shadow:0 1px 3px rgba(20,30,60,.04)}
h1{font-size:26px;color:var(--navy);margin-bottom:6px}
h2{font-size:20px;color:var(--navy);margin-bottom:14px;border-left:4px solid var(--gold);padding-left:10px}
h3{font-size:17px;color:var(--navy);margin-bottom:10px}
.muted{color:var(--muted)}
label{display:block;font-weight:500;margin:12px 0 5px;font-size:15px}
input,select,textarea{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:8px;font-family:inherit;font-size:15px;background:#fff}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--navy)}
.btn{display:inline-block;background:var(--navy);color:#fff;border:none;padding:11px 22px;border-radius:8px;font-family:inherit;font-size:15px;font-weight:600;cursor:pointer;transition:.15s}
.btn:hover{background:var(--navy-dark)}
.btn-gold{background:var(--gold);color:var(--navy-dark)}
.btn-gold:hover{background:var(--gold-light)}
.btn-sm{padding:6px 14px;font-size:14px}
.btn-danger{background:var(--red)}
.btn-outline{background:transparent;border:1px solid var(--navy);color:var(--navy)}
.grid{display:grid;gap:18px}
.grid-2{grid-template-columns:1fr 1fr}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{border:1px solid var(--line);padding:8px 10px;text-align:left}
th{background:var(--navy);color:#fff;font-weight:600}
tr:nth-child(even) td{background:#fafbfe}
.center{text-align:center}
.alert{padding:12px 16px;border-radius:8px;margin-bottom:16px;font-size:15px}
.alert-error{background:#fde8e8;color:#9b1c1c;border:1px solid #f5c6c6}
.alert-success{background:#e7f6ec;color:#176336;border:1px solid #b6e2c4}
.alert-info{background:#e8f0fe;color:#1c3d7a;border:1px solid #c2d4f5}
.auth-wrap{max-width:440px;margin:50px auto}
.stat-card{background:linear-gradient(135deg,var(--navy),var(--navy-dark));color:#fff;border-radius:12px;padding:22px;text-align:center}
.stat-card .num{font-size:34px;font-weight:700;color:var(--gold-light)}
.stat-card .lbl{font-size:14px;color:#cdd6e8}
.pill{display:inline-block;padding:3px 10px;border-radius:20px;font-size:12px;font-weight:600}
.pill-active{background:#e7f6ec;color:#176336}
.pill-pending{background:#fff3cd;color:#8a6d00}
.pill-suspended{background:#fde8e8;color:#9b1c1c}
.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:16px}
.hero{background:linear-gradient(135deg,var(--navy),var(--navy-dark));color:#fff;border-radius:16px;padding:48px 36px;text-align:center;margin-bottom:28px}
.hero h1{color:#fff;font-size:34px}
.hero p{color:#cdd6e8;max-width:640px;margin:10px auto 22px}
.feature{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px}
.feature .ic{font-size:30px}
.footer{text-align:center;padding:30px 20px;color:var(--muted);font-size:14px}
.footer .credit{color:var(--gold);font-weight:600;margin-top:4px}
.inline-form{display:flex;gap:8px;align-items:flex-end}
.score-input{width:70px;padding:5px;text-align:center}

/* ===== ลายเซ็น (Signature) ===== */
.sig-wrap{position:relative;border:2px dashed var(--line);border-radius:12px;background:#fcfdff;height:200px;touch-action:none;overflow:hidden}
.sig-wrap.inked .sig-hint{display:none}
.sig-canvas{width:100%;height:100%;display:block;cursor:crosshair;touch-action:none}
.sig-baseline{position:absolute;left:8%;right:8%;bottom:46px;border-bottom:1.5px solid #d7dce8;pointer-events:none}
.sig-hint{position:absolute;left:50%;bottom:54px;transform:translateX(-50%);color:#b8c0d4;font-size:15px;pointer-events:none}
.sig-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.sig-item{border:1px solid var(--line);border-radius:12px;padding:14px;background:#fff}
.sig-item img{width:100%;height:90px;object-fit:contain;background:#fafbff;border-radius:8px;border:1px solid var(--line)}
.sig-meta{display:flex;flex-direction:column;gap:2px;margin:10px 0}
.sig-meta b{color:var(--navy)}
.sig-actions{display:flex;gap:8px;flex-wrap:wrap}
.sig-choose{display:flex;gap:10px;flex-wrap:wrap;margin-top:8px}
.sig-pick{border:2px solid var(--line);border-radius:10px;padding:6px;cursor:pointer;background:#fff;transition:.15s}
.sig-pick.sel{border-color:var(--gold);box-shadow:0 0 0 3px rgba(201,162,39,.2)}
.sig-pick img{height:54px;display:block}
.sig-pick span{display:block;text-align:center;font-size:12px;color:var(--muted);margin-top:2px}

/* ===== TABLE: เลื่อนแนวนอนบนจอเล็ก + คอลัมน์แรกติดขอบ ===== */
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:10px}
.table-scroll table{min-width:560px}

/* ===== แท็บเล็ต / iPad (≤1024px) ===== */
@media(max-width:1024px){
  .container{margin:18px auto;padding:0 16px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
}

/* ===== มือถือ (≤720px) ===== */
@media(max-width:720px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .topbar{flex-wrap:wrap;height:auto;padding:10px 14px;gap:6px}
  .topnav{gap:10px;font-size:14px;flex-wrap:wrap;width:100%;justify-content:flex-start}
  .topnav .usr{order:-1;width:100%}
  h1{font-size:22px}h2{font-size:18px}
  .card{padding:16px;border-radius:10px}
  .toolbar{gap:8px}
  /* ปุ่มแตะง่ายขึ้น (touch target ≥44px) */
  .btn{padding:13px 20px}
  .btn-sm{padding:10px 16px;font-size:14px}
  input,select,textarea{padding:12px;font-size:16px} /* 16px กัน iOS zoom */
  .score-input{width:56px;padding:9px 4px;font-size:15px}
  th,td{padding:7px 8px;font-size:13px}
  .sig-wrap{height:170px}
  /* ตารางทุกตัวในหน้าให้เลื่อนแนวนอนได้ */
  .card table{display:block;overflow-x:auto;white-space:nowrap;-webkit-overflow-scrolling:touch}
}

/* ปุ่มแชร์/พิมพ์ลอย */
.share-bar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:6px 0 4px}
@media print{ .topbar,.footer,.toolbar,.share-bar,.no-print{display:none!important} .container{margin:0;max-width:100%} .card{border:none;box-shadow:none;padding:0} }