:root{
  --paper:#f1ede4;--surface:#fbf8f1;--white:#fff;--ink:#24221e;--muted:#777065;--muted-2:#9b9387;
  --line:#ded6c7;--line-soft:#eae4d8;--green:#2f6249;--green-soft:#e5eee7;--danger:#a34a37;--gold:#b78b2d;
  --font:'IBM Plex Sans Thai','IBM Plex Sans',sans-serif;--display:'Kanit','IBM Plex Sans Thai',sans-serif;
}
*{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--ink);font:14px/1.65 var(--font);-webkit-font-smoothing:antialiased}
a{color:inherit}button,input,textarea,select{font:inherit}button{cursor:pointer}
.hidden{display:none!important}.boot{min-height:100vh;display:grid;place-items:center}.spinner{width:24px;height:24px;border:2px solid var(--line);border-top-color:var(--green);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}
/* login */
.vlogin{min-height:100vh;display:grid;place-items:center;padding:24px}
.vlogin-card{width:min(100%,430px);padding:30px 28px 20px;border:1px solid var(--line);border-radius:18px;background:var(--surface);box-shadow:0 18px 44px rgba(20,18,15,.07)}
.vlogin-brand{display:flex;align-items:center;gap:11px;margin-bottom:24px}
.vlogin-brand img{width:48px;height:48px;border-radius:50%;object-fit:contain}
.vlogin-brand b{display:block;font:600 19px/1.2 var(--display);letter-spacing:-.02em}
.vlogin-brand span{display:block;margin-top:3px;color:var(--muted);font-size:9px;letter-spacing:.1em;text-transform:uppercase}
.vlogin h1{margin:0 0 5px;font:600 26px/1.25 var(--display);letter-spacing:-.03em}
.vlogin-lead{margin:0 0 20px;color:var(--muted);font-size:13px;line-height:1.7}
.vlogin-form .field{margin-bottom:14px}.vlogin-form .field label{font-size:12px}
.vlogin-form .input{min-height:47px;border:1px solid var(--line);border-radius:10px;background:#fff;padding:10px 13px}
.vlogin-submit{width:100%;min-height:49px;margin-top:2px;border-radius:10px;background:var(--ink);color:#fff;border:0;font-weight:600}
.vlogin-note{margin-top:15px;padding:10px 12px;border-radius:10px;background:var(--green-soft);color:#37624d;font-size:12px}
.vlogin-foot{display:flex;justify-content:space-between;gap:10px;margin-top:20px;padding-top:14px;border-top:1px solid var(--line);color:var(--muted-2);font-size:11px}
/* shell */
.shell{width:min(1120px,calc(100% - 40px));margin:0 auto;padding-bottom:70px}
.top{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:82px;border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand img{width:40px;height:40px;border-radius:50%;object-fit:contain}
.brand b{display:block;font:600 17px/1.1 var(--display);letter-spacing:-.02em}.brand span{display:block;margin-top:3px;color:var(--muted);font-size:9px;letter-spacing:.1em;text-transform:uppercase}
.top-meta{display:flex;align-items:center;gap:7px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:36px;padding:7px 12px;border:1px solid transparent;border-radius:8px;background:var(--ink);color:#fff;font-size:11px;font-weight:600;text-decoration:none}
.btn:disabled{opacity:.55;cursor:wait}.btn--ghost{background:transparent;border-color:var(--line);color:var(--ink)}.btn--soft{background:var(--green-soft);color:var(--green);border-color:transparent}.btn--danger{background:transparent;border-color:#e4c9c1;color:var(--danger)}.btn--gold{background:var(--gold);color:#2b2414}.btn--sm{min-height:30px;padding:5px 9px;font-size:10px}
.dash-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;padding:36px 0 22px}
.dash-head h1{margin:0;font:600 36px/1.15 var(--display);letter-spacing:-.04em}.dash-head p{margin:5px 0 0;color:var(--muted);font-size:12px}
.stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-bottom:18px}
.stat{padding:14px 15px;border:1px solid var(--line);border-radius:11px;background:var(--surface)}
.stat span{display:block;color:var(--muted);font-size:9px;letter-spacing:.06em;text-transform:uppercase}.stat b{display:block;margin-top:3px;font:500 24px var(--display);letter-spacing:-.03em}.stat small{display:block;color:var(--muted-2);font-size:9px;margin-top:2px}
.panel{padding:18px;border:1px solid var(--line);border-radius:14px;background:var(--surface)}
.panel-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:12px}
.panel-title{font:600 17px/1.3 var(--display);letter-spacing:-.02em}.panel-sub{margin-top:2px;color:var(--muted);font-size:10.5px}
.pill{display:inline-flex;padding:4px 8px;border-radius:99px;background:var(--green-soft);color:var(--green);font-size:9px;font-weight:600}
.book-list{display:grid;gap:8px}
.book-item{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:14px;align-items:center;padding:14px;border:1px solid var(--line-soft);border-radius:10px;background:#fff;text-decoration:none;color:var(--ink)}
.book-item:hover{border-color:#c9bda9}.book-item__title{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.book-item__title strong{font:600 16px/1.3 var(--display);letter-spacing:-.02em}
.book-item__meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:3px;color:var(--muted);font-size:9.5px}
.book-item__actions{display:flex;gap:5px;align-items:center}
.badge{display:inline-flex;padding:3px 7px;border-radius:99px;font-size:8.5px;font-weight:600}.badge--public{background:var(--green-soft);color:var(--green)}.badge--students{background:#f3e9e2;color:#965642}
.empty{padding:34px 16px;text-align:center;border:1px dashed var(--line);border-radius:10px;color:var(--muted);font-size:11px}
/* editor */
.editor-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding:26px 0 16px;flex-wrap:wrap}
.editor-head h1{margin:0;font:600 32px/1.2 var(--display);letter-spacing:-.04em}.editor-head p{margin:4px 0 0;color:var(--muted);font-size:11px}
.back{display:inline-flex;color:var(--muted);font-size:11px;text-decoration:none;margin-bottom:8px}.back:hover{color:var(--ink)}
.editor-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:12px;margin-bottom:12px}
.meta-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.meta-grid .field--wide{grid-column:1/-1}
.field{margin-bottom:11px}.field label{display:block;margin-bottom:4px;color:var(--muted);font-size:10px}.input,textarea,select.input{width:100%;min-height:38px;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);font-size:12px;outline:0}.input:focus,textarea:focus,select.input:focus{border-color:var(--green);box-shadow:0 0 0 3px rgba(47,98,73,.1)}textarea{resize:vertical;min-height:78px}
.mini-list{display:grid;gap:4px}.mini-row{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:8px 0;border-bottom:1px solid var(--line-soft)}.mini-row:last-child{border-bottom:0}.mini-row__main{display:flex;align-items:center;gap:7px;min-width:0}.mini-row__main strong{font-size:11px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.mini-row__main small{display:block;color:var(--muted-2);font-size:8.5px}.mini-actions{display:flex;gap:3px;flex:0 0 auto}.icon-btn{width:24px;height:24px;display:grid;place-items:center;border:1px solid transparent;border-radius:6px;background:transparent;color:var(--muted);font-size:12px}.icon-btn:hover{background:#f3eee4;color:var(--ink)}.dot{width:9px;height:9px;border-radius:50%;flex:0 0 auto}
.entries-panel{margin-top:12px}.entries-toolbar{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap;margin-bottom:10px}.entries-toolbar__actions{display:flex;gap:5px;flex-wrap:wrap}
.table-wrap{overflow-x:auto}.entry-table{width:100%;border-collapse:collapse;font-size:10.5px}.entry-table th{padding:7px 8px;border-bottom:1px solid var(--line);color:var(--muted);font-weight:500;text-align:left;white-space:nowrap}.entry-table td{padding:9px 8px;border-bottom:1px solid var(--line-soft);vertical-align:top}.entry-table tr:hover td{background:#faf7ef}.entry-table__word{font:600 13px var(--display);letter-spacing:-.01em;min-width:110px}.entry-table__chapter{display:inline-flex;padding:3px 6px;border-radius:99px;color:#fff;font-size:8px;font-weight:600;white-space:nowrap}.entry-table__actions{white-space:nowrap;text-align:right}
.note{padding:10px 12px;border-radius:8px;background:var(--green-soft);color:#37624d;font-size:10.5px;line-height:1.6}.note--warn{background:#f5eee0;color:#7a5a12}.note--error{background:#f7e6df;color:#8c4230}
/* modal */
.modal-backdrop{position:fixed;inset:0;z-index:60;display:grid;place-items:center;padding:18px;background:rgba(30,27,22,.45);backdrop-filter:blur(6px)}
.modal{width:min(100%,520px);max-height:calc(100dvh - 32px);overflow:auto;border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:0 24px 70px rgba(20,18,15,.22)}
.modal__head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;padding:16px 18px 10px;border-bottom:1px solid var(--line-soft)}.modal__head h2{margin:0;font:600 19px/1.3 var(--display);letter-spacing:-.03em}.modal__body{padding:14px 18px 8px}.modal__foot{display:flex;justify-content:flex-end;gap:7px;padding:10px 18px 16px}.modal-close{border:0;background:transparent;color:var(--muted);font-size:18px}
.viewer-list{display:grid;gap:5px;max-height:300px;overflow:auto}.viewer-row{display:flex;justify-content:space-between;gap:10px;padding:8px 0;border-bottom:1px solid var(--line-soft);font-size:11px}.viewer-row b{font-weight:500}.viewer-row small{color:var(--muted);font-size:9px}
.toast{position:fixed;right:20px;bottom:20px;z-index:80;padding:10px 14px;border-radius:8px;background:var(--ink);color:#fff;font-size:11px;box-shadow:0 8px 24px rgba(0,0,0,.15)}.toast.error{background:var(--danger)}
.import-preview{max-height:200px;overflow:auto;margin-top:10px;border:1px solid var(--line);border-radius:8px}.import-preview table{width:100%;border-collapse:collapse;font-size:10px}.import-preview th,.import-preview td{padding:5px 7px;border-bottom:1px solid var(--line-soft);text-align:left;white-space:nowrap}.import-preview th{color:var(--muted);font-weight:500}
@media(max-width:860px){.editor-grid{grid-template-columns:1fr}.meta-grid{grid-template-columns:1fr}.stats{grid-template-columns:1fr 1fr}.dash-head h1{font-size:30px}}
@media(max-width:560px){.shell{width:calc(100% - 28px)}.top{min-height:72px}.brand img{width:36px;height:36px}.brand b{font-size:15px}.book-item{grid-template-columns:1fr}.book-item__actions{justify-content:flex-end}.vlogin{padding:14px}.vlogin-card{padding:22px 18px 16px}.stats{grid-template-columns:1fr}.dash-head{align-items:flex-start;flex-direction:column}.editor-head h1{font-size:26px}.modal__body,.modal__head,.modal__foot{padding-left:14px;padding-right:14px}}