:root{
  --bg:#f3f5f9;--card:#fff;--text:#1b2433;--muted:#667085;--border:#d5dbe6;
  --brand:#0a5bd6;--brand-text:#fff;--heading:#0b3a82;--danger:#c62828;--danger-bg:#fdecec;--ok:#1b7f3b;--ok-bg:#e6f5ea;--warn-bg:#fff6dd;--warn:#7a5b00;--shadow:0 1px 3px rgba(16,24,40,.12);
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0f141c;--card:#18202c;--text:#e6ebf2;--muted:#9aa6b8;--border:#2c394b;--brand:#4b8dff;--brand-text:#06142e;--heading:#9cc2ff;--danger:#ff7b7b;--danger-bg:#3a1c1c;--ok:#6fd48b;--ok-bg:#16301e;--warn-bg:#352c10;--warn:#f2cf6b;--shadow:none}}
:root[data-theme="dark"]{
  --bg:#0f141c;--card:#18202c;--text:#e6ebf2;--muted:#9aa6b8;--border:#2c394b;--brand:#4b8dff;--brand-text:#06142e;--heading:#9cc2ff;--danger:#ff7b7b;--danger-bg:#3a1c1c;--ok:#6fd48b;--ok-bg:#16301e;--warn-bg:#352c10;--warn:#f2cf6b;--shadow:none}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.5 system-ui,-apple-system,"Sukhumvit Set","Noto Sans Thai",sans-serif}
.wrap{max-width:640px;margin:0 auto;padding:12px 16px 40px}
.wide{max-width:1200px}
header.top{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 0}
h1{font-size:1.25rem;margin:0;color:var(--heading)}
h2{font-size:1.1rem;margin:0 0 8px;color:var(--heading)}
.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:14px;margin:12px 0;box-shadow:var(--shadow)}
.field{margin:12px 0;padding:6px;border-radius:8px;border:1px solid transparent}
.field label,.field .lbl{display:block;font-weight:600;margin-bottom:4px}
.field .req{color:var(--danger)}
input,select,textarea,button{font:inherit;color:inherit}
input[type=text],input[type=tel],input[type=search],input[type=password],input[type=number],select,textarea{width:100%;min-height:46px;padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:var(--bg)}
textarea{min-height:90px}
.field--invalid{border-color:var(--danger);background:var(--danger-bg)}
.field--invalid label,.field--invalid .lbl{color:var(--danger)}
.err{color:var(--danger);font-size:.9rem;min-height:1.1em;margin-top:2px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:10px 18px;border:1px solid var(--border);border-radius:10px;background:var(--card);cursor:pointer;font-weight:600}
.btn.primary{background:var(--brand);color:var(--brand-text);border-color:var(--brand)}
.btn.danger{color:var(--danger);border-color:var(--danger)}
.btn.sm{min-height:34px;padding:4px 10px;font-size:.9rem}
.btn:disabled{opacity:.5;cursor:default}
.btn.block{display:flex;width:100%}
.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.seg{display:flex;gap:8px;flex-wrap:wrap}
.seg label{display:flex;align-items:center;gap:6px;margin:0;font-weight:500;padding:10px 14px;border:1px solid var(--border);border-radius:10px;background:var(--bg);cursor:pointer;min-height:46px}
.seg input{width:20px;height:20px}
.notice{padding:10px 12px;border-radius:10px;margin:10px 0}
.notice.warn{background:var(--warn-bg);color:var(--warn)}
.notice.ok{background:var(--ok-bg);color:var(--ok)}
.notice.err{background:var(--danger-bg);color:var(--danger)}
.thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:8px;margin:8px 0}
.thumb{position:relative;aspect-ratio:1;border-radius:10px;overflow:hidden;border:1px solid var(--border);background:var(--bg)}
.thumb img{width:100%;height:100%;object-fit:cover;display:block}
.thumb button{position:absolute;top:4px;right:4px;width:28px;height:28px;border-radius:50%;border:0;background:rgba(0,0,0,.65);color:#fff;font-size:18px;line-height:1;cursor:pointer}
.thumb.loading{display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:.8rem}
.muted{color:var(--muted);font-size:.9rem}
footer{color:var(--muted);font-size:.8rem;text-align:center;margin-top:24px}
[hidden]{display:none!important}
.iconbtn{background:none;border:1px solid var(--border);border-radius:10px;min-width:40px;min-height:40px;cursor:pointer}
/* admin */
.tabs{display:flex;gap:4px;flex-wrap:wrap;margin:8px 0}
.tabs button{padding:8px 14px;border:1px solid var(--border);background:var(--card);border-radius:10px;cursor:pointer;font-weight:600}
.tabs button.on{background:var(--brand);color:var(--brand-text);border-color:var(--brand)}
table{border-collapse:collapse;width:100%;font-size:.9rem}
th,td{border-bottom:1px solid var(--border);padding:6px 8px;text-align:left;vertical-align:top}
th{position:sticky;top:0;background:var(--card);z-index:1}
.tscroll{overflow:auto;max-height:70vh;border:1px solid var(--border);border-radius:10px;background:var(--card)}
.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:8px}
.stat{padding:12px;border:1px solid var(--border);border-radius:10px;background:var(--card)}
.stat b{display:block;font-size:1.4rem;color:var(--heading)}
dialog{border:1px solid var(--border);border-radius:12px;background:var(--card);color:var(--text);max-width:min(680px,96vw);width:100%;padding:16px}
dialog::backdrop{background:rgba(0,0,0,.5)}
.bar{height:8px;background:var(--border);border-radius:4px;overflow:hidden}
.bar i{display:block;height:100%;background:var(--brand)}
@media (max-width:480px){.wrap{padding:8px 16px 32px}}

.brand{display:flex;align-items:center;gap:10px;min-width:0}
.logo{width:72px;height:auto;flex:none;border-radius:6px}
.logo-dark{display:none}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .logo-light{display:none}:root:not([data-theme="light"]) .logo-dark{display:block}}
:root[data-theme="dark"] .logo-light{display:none}
:root[data-theme="dark"] .logo-dark{display:block}
.samples{margin:6px 0 10px}
.sample{padding:0;border:1px solid var(--border);border-radius:8px;overflow:hidden;background:var(--bg);cursor:pointer;line-height:0}
.sample img{height:84px;width:auto;display:block}
.lightbox{position:fixed;inset:0;z-index:100;background:rgba(0,0,0,.85);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;color:#fff;padding:16px;cursor:zoom-out}
.lightbox img{max-width:100%;max-height:80vh;border-radius:8px}
footer div+div{margin-top:2px}
@media (max-width:480px){h1{font-size:1rem}.logo{width:60px}}

/* New-version banner: fixed colors so it is readable in light and dark themes */
.update-banner{position:fixed;left:0;right:0;bottom:0;z-index:200;display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;padding:12px 16px calc(12px + env(safe-area-inset-bottom));background:#0a2a5e;color:#fff;border-top:4px solid #ffc107;box-shadow:0 -4px 16px rgba(0,0,0,.35);font-size:1.05rem;font-weight:700}
.update-banner small{font-weight:500;opacity:.85}
.update-go{min-height:44px;padding:8px 18px;border:0;border-radius:10px;background:#ffc107;color:#1b1b1b;font:inherit;font-weight:800;cursor:pointer}
.update-x{min-width:40px;min-height:40px;border:1px solid rgba(255,255,255,.5);border-radius:10px;background:transparent;color:#fff;font-size:1.3rem;line-height:1;cursor:pointer}
a.btn{color:inherit;text-decoration:none}

.portal{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin:20px 0 4px}
.portal .btn{min-width:130px}
/* Viewer: distinct teal read-only look */
body.viewer{--brand:#0f8b7d;--brand-text:#fff}
body.viewer .wrap{border-top:5px solid #0f8b7d}
.ro-badge{background:#0f8b7d;color:#fff;border-radius:999px;padding:4px 12px;font-size:.8rem;font-weight:700;letter-spacing:.02em}

select[size]{padding:4px;overflow-y:auto;height:auto}
select[size] option{padding:10px 12px;border-radius:6px;min-height:20px}
select[size] option:checked{background:var(--brand) linear-gradient(0deg,var(--brand),var(--brand));color:var(--brand-text)}

.history{margin:10px 0;border:1px solid var(--border);border-radius:10px;padding:8px 12px;background:var(--bg)}
.history summary{cursor:pointer;font-weight:700;color:var(--heading)}
.hist-item{padding:8px 0;border-top:1px dashed var(--border);margin-top:8px;font-size:.9rem}
.hist-head{font-weight:600}
.hist-change{color:var(--muted);padding-left:10px}

.title{min-width:0}
.role-sub{font-size:.8rem;font-weight:600;color:var(--muted);line-height:1.2;margin-top:2px}
header.top{flex-wrap:wrap}.brand{flex:1 1 200px}