:root{--bg:#eef7ff;--bg2:#fbfdff;--card:rgba(255,255,255,.94);--text:#18283d;--muted:#73869d;--line:#dbeafa;--primary:#398eea;--primary2:#75bcff;--soft:#eaf5ff;--good:#178f69;--warn:#b87819;--bad:#d85262;--shadow:0 18px 55px rgba(61,132,199,.13);--safe:max(14px,env(safe-area-inset-bottom))}
[data-theme="dark"]{--bg:#0c1d2d;--bg2:#10263a;--card:rgba(18,41,62,.96);--text:#f4f8ff;--muted:#a8bfd5;--line:#294761;--primary:#67b8ff;--primary2:#a0d5ff;--soft:#173a58;--shadow:0 18px 55px rgba(0,0,0,.32)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--text);font-family:Tahoma,"Thonburi","Noto Sans Thai","Leelawadee UI","Segoe UI",-apple-system,BlinkMacSystemFont,sans-serif;background:radial-gradient(circle at 8% 0,rgba(108,183,255,.28),transparent 23%),radial-gradient(circle at 92% 0,rgba(210,233,255,.8),transparent 25%),linear-gradient(180deg,var(--bg2),var(--bg));min-height:100vh;-webkit-font-smoothing:antialiased}
.app-shell{width:min(1220px,100%);margin:auto;padding:16px 18px calc(110px + var(--safe))}
.topbar{display:flex;align-items:center;gap:13px;padding:5px 3px 20px}
.back,.icon-btn,.close-btn{width:48px;height:48px;border-radius:16px;border:1px solid rgba(100,169,224,.22);background:rgba(255,255,255,.76);color:var(--primary);display:grid;place-items:center;text-decoration:none;font-size:21px;font-weight:900;box-shadow:0 10px 28px rgba(64,134,193,.1)}
.brandmark{width:56px;height:56px;border-radius:19px;background:linear-gradient(145deg,#fff,#dcefff);position:relative;overflow:hidden;box-shadow:0 13px 30px rgba(62,139,205,.16);flex:none}
.brandmark:before,.brandmark span,.brandmark i{position:absolute;content:""}
.brandmark:before{width:18px;height:18px;border-radius:50%;left:10px;top:10px;background:#7bbcff}
.brandmark span{width:55px;height:33px;border-radius:50%;left:-18px;bottom:-8px;background:#5ba5ed;transform:rotate(-10deg)}
.brandmark i{width:54px;height:32px;border-radius:50%;right:-20px;bottom:-2px;background:#91caff;transform:rotate(12deg)}
.brand{min-width:0;flex:1}
.brand h1{margin:0;font-size:clamp(23px,3vw,31px);line-height:1.25;color:var(--primary)}
.brand p{margin:4px 0 0;color:var(--muted);font-size:13px;line-height:1.45}
.hero{border-radius:34px;padding:clamp(27px,5vw,52px);color:#fff;background:linear-gradient(140deg,#3c93e8,#75bbfb 62%,#b5dcfb);box-shadow:0 25px 65px rgba(54,136,213,.22);display:flex;justify-content:space-between;align-items:flex-end;gap:22px;position:relative;overflow:hidden}
.hero:before,.hero:after{content:"";position:absolute;border-radius:50%;background:rgba(255,255,255,.16)}
.hero:before{width:330px;height:330px;right:-110px;top:-170px}
.hero:after{width:160px;height:80px;right:120px;bottom:-40px;box-shadow:100px -20px 0 -12px rgba(255,255,255,.12)}
.hero>div,.contact-btn{position:relative;z-index:1}
.eyebrow{font-size:12px;font-weight:900;background:rgba(255,255,255,.19);border:1px solid rgba(255,255,255,.28);padding:8px 11px;border-radius:999px}
.hero h2{font-size:clamp(31px,5vw,52px);line-height:1.15;margin:16px 0 10px}
.hero p{margin:0;line-height:1.7;max-width:720px;opacity:.94}
.contact-btn{border:1px solid rgba(255,255,255,.35);background:rgba(255,255,255,.18);color:#fff;border-radius:17px;padding:14px 17px;font-weight:900;backdrop-filter:blur(12px);white-space:nowrap}
.stats{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;margin:17px 0}
.stat-card,.card{border:1px solid rgba(125,181,226,.22);background:var(--card);box-shadow:var(--shadow);backdrop-filter:blur(18px)}
.stat-card{border-radius:21px;padding:17px}
.stat-card b{font-size:28px;color:var(--primary);display:block}
.stat-card span{font-size:12px;color:var(--muted);font-weight:800}
.toolbar{padding:14px;border-radius:23px;display:grid;grid-template-columns:minmax(230px,1fr) repeat(3,minmax(135px,auto)) auto auto;gap:10px;align-items:center}
.search{display:flex;align-items:center;gap:8px;background:var(--soft);border:1px solid var(--line);border-radius:15px;padding:0 12px}
.search span{font-size:22px;color:var(--primary)}
input,select,textarea,button{font:inherit}
input,select,textarea{width:100%;border:1px solid var(--line);background:rgba(244,250,255,.8);color:var(--text);border-radius:14px;padding:12px 13px;outline:none}
textarea{resize:vertical;line-height:1.65}
input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(57,142,234,.11);background:var(--card)}
.search input{border:0;background:transparent;box-shadow:none!important;padding:12px 0}
.soft-btn,.primary-btn,.danger-soft{border-radius:15px;padding:12px 14px;font-weight:900;cursor:pointer}
.soft-btn{border:1px solid var(--line);background:var(--soft);color:var(--primary)}
.primary-btn{border:0;background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;box-shadow:0 10px 22px rgba(57,142,234,.24)}
.danger-soft{border:1px solid rgba(216,82,98,.25);background:rgba(255,239,242,.8);color:var(--bad)}
.file-btn{position:relative;text-align:center;cursor:pointer}
.file-btn input{position:absolute;inset:0;opacity:0;cursor:pointer}
.list-head{display:flex;justify-content:space-between;align-items:center;margin:25px 4px 12px}
.list-head h3{margin:0;font-size:22px}
.list-head p{margin:4px 0 0;color:var(--muted);font-size:13px}
.view-switch{display:flex;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:4px}
.view-switch button{border:0;background:transparent;color:var(--muted);width:39px;height:36px;border-radius:10px;font-size:19px}
.view-switch button.active{background:var(--soft);color:var(--primary)}
.page-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.page-card{border:1px solid rgba(125,181,226,.23);background:var(--card);border-radius:24px;overflow:hidden;box-shadow:0 13px 38px rgba(61,126,182,.10);cursor:pointer;transition:.18s;text-align:left;color:var(--text);padding:0}
.page-card:hover{transform:translateY(-3px);box-shadow:0 19px 45px rgba(61,126,182,.16)}
.page-thumb{position:relative;aspect-ratio:4/5;background:#e9f3fb;overflow:hidden}
.page-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.status-badge,.type-badge{position:absolute;top:10px;border-radius:999px;padding:7px 9px;font-size:10px;font-weight:900;backdrop-filter:blur(12px)}
.status-badge{right:10px}
.type-badge{left:10px;background:rgba(255,255,255,.88);color:#3e6d97}
.status-untranscribed{background:rgba(255,255,255,.88);color:#71869b}
.status-draft{background:#fff2cf;color:#9b6412}
.status-verified{background:#e4f9f0;color:#147d5d}
.status-hold{background:#fff0d9;color:#a3650e}
.status-unusable{background:#ffe9ed;color:#bd4050}
.page-info{padding:15px}
.page-info h4{margin:0 0 5px;font-size:16px;line-height:1.45}
.page-info p{margin:0;color:var(--muted);font-size:12px;line-height:1.5}
.page-info .topic{margin-top:8px;color:var(--primary);font-weight:800;min-height:18px}
.page-grid.list-mode{grid-template-columns:1fr}
.page-grid.list-mode .page-card{display:grid;grid-template-columns:120px 1fr}
.page-grid.list-mode .page-thumb{aspect-ratio:auto;height:140px}
.bottom-nav{position:fixed;z-index:50;left:50%;bottom:max(7px,env(safe-area-inset-bottom));transform:translateX(-50%);width:min(680px,calc(100% - 22px));display:grid;grid-template-columns:repeat(4,1fr);gap:4px;padding:8px;border:1px solid rgba(125,180,224,.27);border-radius:24px;background:rgba(255,255,255,.9);box-shadow:0 16px 45px rgba(50,112,166,.18);backdrop-filter:blur(22px)}
.bottom-nav a{text-decoration:none;color:#8190a0;border-radius:16px;min-height:57px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;font-weight:800;font-size:11px}
.bottom-nav b{font-size:23px;line-height:1}
.bottom-nav a.active{color:var(--primary);background:var(--soft)}
dialog{border:0;padding:0;background:var(--card);color:var(--text);box-shadow:0 30px 90px rgba(20,61,95,.35)}
dialog::backdrop{background:rgba(10,37,61,.62);backdrop-filter:blur(6px)}
.editor-dialog{width:min(1420px,98vw);height:min(930px,96vh);border-radius:28px;overflow:hidden}
.editor-head{height:84px;padding:14px 18px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}
.editor-head>div{min-width:0}
.editor-head h2{margin:3px 0 0;font-size:21px}
.editor-head p{margin:3px 0 0;color:var(--muted);font-size:11px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:70vw}
.chip{font-size:10px;font-weight:900;color:var(--primary);background:var(--soft);padding:6px 9px;border-radius:999px}
.close-btn{border-radius:14px;flex:none}
.editor-layout{height:calc(100% - 84px);display:grid;grid-template-columns:minmax(0,1.15fr) minmax(430px,.85fr)}
.viewer-panel{background:#102235;padding:12px;display:flex;flex-direction:column;min-height:0}
.viewer-toolbar{display:flex;gap:7px;align-items:center;padding:3px 0 10px;flex-wrap:wrap}
.viewer-toolbar button,.viewer-toolbar span{border:1px solid rgba(255,255,255,.13);background:rgba(255,255,255,.09);color:#fff;border-radius:11px;min-width:42px;height:38px;padding:0 10px;display:grid;place-items:center;font-weight:900}
.image-stage{position:relative;flex:1;min-height:0;overflow:hidden;border-radius:18px;background:#081521;touch-action:none;cursor:grab}
.image-stage:active{cursor:grabbing}
.image-stage img{position:absolute;left:50%;top:50%;max-width:none;transform-origin:center;user-select:none;-webkit-user-drag:none}
.viewer-tip{margin:9px 4px 0;color:#adc3d5;font-size:11px;line-height:1.5}
.form-panel{padding:15px 17px;overflow:auto;min-height:0}
.tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;background:var(--soft);padding:5px;border-radius:15px;position:sticky;top:0;z-index:3}
.tabs button{border:0;background:transparent;color:var(--muted);border-radius:11px;padding:10px 8px;font-weight:900}
.tabs button.active{background:var(--card);color:var(--primary);box-shadow:0 6px 18px rgba(55,123,180,.10)}
.tab-pane{display:none;padding-top:16px}
.tab-pane.active{display:block}
.tab-pane label{display:block;font-size:12px;color:var(--muted);font-weight:900;margin-bottom:13px}
.tab-pane label input,.tab-pane label select,.tab-pane label textarea{margin-top:7px;color:var(--text);font-weight:400}
.field-row,.option-fields{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.warning-box{border:1px solid rgba(184,120,25,.22);background:#fff7e2;color:#805514;padding:13px;border-radius:15px;font-size:12px;line-height:1.6}
.check-row{display:flex!important;align-items:center;gap:9px;color:var(--text)!important;background:var(--soft);border-radius:15px;padding:13px}
.check-row input{width:auto;margin:0!important}
.editor-actions{position:sticky;bottom:-15px;background:linear-gradient(180deg,transparent,var(--card) 22%);padding:26px 0 3px;display:flex;gap:8px}
.editor-actions button{flex:1}
.simple-head{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;border-bottom:1px solid var(--line)}
.simple-head button{border:0;background:var(--soft);color:var(--primary);width:40px;height:40px;border-radius:12px}
.contact-body{max-height:82vh;overflow:auto;padding:12px}
.contact-body img{display:block;width:100%;height:auto}
.toast{position:fixed;z-index:100;left:50%;bottom:calc(96px + var(--safe));transform:translate(-50%,20px);opacity:0;pointer-events:none;background:#18344d;color:#fff;padding:11px 16px;border-radius:999px;transition:.2s;box-shadow:0 12px 35px rgba(0,0,0,.22)}
.toast.show{opacity:1;transform:translate(-50%,0)}
@media(max-width:1000px){.toolbar{grid-template-columns:1fr 1fr 1fr}
.search{grid-column:1/-1}
.page-grid{grid-template-columns:repeat(3,1fr)}
.editor-layout{grid-template-columns:1fr}
.editor-dialog{height:98vh}
.viewer-panel{min-height:48vh}
.form-panel{min-height:45vh}
.editor-layout{overflow:auto;height:calc(100% - 84px)}
.viewer-panel,.form-panel{overflow:visible}
.stats{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:680px){.app-shell{padding:10px 12px calc(105px + var(--safe))}
.topbar{padding-bottom:14px}
.brandmark{display:none}
.brand h1{font-size:22px}
.brand p{font-size:11px}
.back,.icon-btn{width:44px;height:44px}
.hero{border-radius:27px;padding:27px 21px;display:block}
.hero h2{font-size:34px}
.contact-btn{width:100%;margin-top:20px}
.stats{grid-template-columns:repeat(2,1fr);gap:9px}
.stat-card{padding:14px}
.stat-card b{font-size:24px}
.toolbar{grid-template-columns:1fr 1fr;padding:11px}
.search{grid-column:1/-1}
.toolbar select{min-width:0}
.page-grid{grid-template-columns:repeat(2,1fr);gap:11px}
.page-card{border-radius:18px}
.page-info{padding:12px}
.page-info h4{font-size:14px}
.status-badge,.type-badge{font-size:9px;padding:5px 7px}
.editor-dialog{width:100vw;height:100dvh;max-width:none;max-height:none;border-radius:0}
.editor-head{height:74px}
.editor-layout{height:calc(100% - 74px)}
.viewer-panel{min-height:46vh;padding:8px}
.form-panel{padding:11px}
.field-row,.option-fields{grid-template-columns:1fr}
.editor-actions{flex-wrap:wrap}
.editor-actions button{min-width:45%}
.bottom-nav{border-radius:21px}
.bottom-nav a{min-height:53px}
.bottom-nav b{font-size:21px}
}
@media(max-width:400px){.page-grid{grid-template-columns:1fr 1fr}
.page-thumb{aspect-ratio:3/4}
.toolbar{grid-template-columns:1fr}
.search{grid-column:auto}
.stats{grid-template-columns:1fr 1fr}
.list-head h3{font-size:19px}
}

/* สมุดเขียนตามโจทย์สำหรับ iPad / Apple Pencil */
.writing-panel{padding:16px;min-height:0;overflow:auto;background:var(--card);display:flex;flex-direction:column;gap:12px}
.writing-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.writing-head h3{margin:0;font-size:20px}
.writing-head p{margin:4px 0 0;color:var(--muted);font-size:12px}
.compact{padding:9px 11px;white-space:nowrap}
.writing-toolbar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:10px;border:1px solid var(--line);background:var(--soft);border-radius:17px}
.write-tool{border:1px solid var(--line);background:var(--card);color:var(--text);border-radius:12px;padding:9px 11px;font-weight:900;min-height:40px}
.write-tool.active{border-color:var(--primary);background:#ddecff;color:#237cd5;box-shadow:0 0 0 3px rgba(57,142,234,.1)}
.write-tool.danger{color:var(--bad)}
.color-tools{display:flex;align-items:center;gap:6px;padding:3px 6px}
.color-dot{width:31px;height:31px;border-radius:50%;border:3px solid var(--card);background:var(--dot);box-shadow:0 0 0 1px var(--line)}
.color-dot.active{box-shadow:0 0 0 3px var(--primary)}
.pen-size{display:flex;align-items:center;gap:7px;color:var(--muted);font-size:11px;font-weight:900;min-width:125px}
.pen-size input{width:82px;margin:0;padding:0;box-shadow:none;background:transparent}
.paper-wrap{position:relative;flex:1;min-height:520px;border:1px solid #cbdced;border-radius:18px;overflow:hidden;background:#fff;box-shadow:inset 0 0 0 1px rgba(255,255,255,.8),0 12px 30px rgba(55,110,160,.08)}
#noteCanvas{display:block;width:100%;height:100%;position:absolute;inset:0;touch-action:none;cursor:crosshair;-webkit-user-select:none;user-select:none}
.paper-hint{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:7px;color:#8ba0b5;pointer-events:none;padding:20px}
.paper-hint b{font-size:20px;color:#6f8aa4}
.paper-hint.hidden{display:none}
.writing-actions{display:grid;grid-template-columns:1fr 1fr;gap:9px}
.writing-actions button{min-height:48px}
.writing-panel:fullscreen{width:100vw;height:100vh;padding:18px;background:#edf6ff}
.writing-panel:fullscreen .paper-wrap{min-height:0}
.writing-panel.is-read .writing-head h3:after{content:' • อ่านแล้ว';color:var(--good);font-size:13px}
.status-read{background:#e4f9f0;color:#147d5d}
.status-noted{background:#e7f2ff;color:#287fd6}
.status-unread{background:rgba(255,255,255,.88);color:#71869b}
@media(max-width:1000px){.writing-panel{min-height:600px}.paper-wrap{min-height:500px}}
@media(max-width:680px){.writing-panel{padding:10px;min-height:590px}.writing-head{align-items:flex-start}.writing-head h3{font-size:18px}.writing-toolbar{gap:6px;padding:8px}.write-tool{padding:8px 9px;font-size:12px}.color-dot{width:28px;height:28px}.pen-size{order:5;width:100%;justify-content:center}.pen-size input{width:min(220px,65vw)}.paper-wrap{min-height:430px}.writing-actions{grid-template-columns:1fr}.writing-panel:fullscreen{padding:9px}.writing-panel:fullscreen .writing-head p{display:none}}