/* Nexta Letter Desk — admin UI */
:root{--accent:#F15A24;--bg:#f5f6f8;--card:#fff;--ink:#1d2330;--muted:#6b7280;--line:#e5e7eb;--r:10px}
*{box-sizing:border-box}
html,body{margin:0}
body{font:14px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
h1{font-size:22px;margin:0}
h2{font-size:15px;margin:28px 0 10px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
h3{font-size:15px;margin:0 0 12px}
code,.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em}
code{background:#f1f2f4;padding:1px 5px;border-radius:4px}
.muted{color:var(--muted)}
.small{font-size:12.5px}
.center{text-align:center}
.right{text-align:right}
.nowrap{white-space:nowrap}
hr{border:0;border-top:1px solid var(--line);margin:16px 0}

/* layout */
.app{display:flex;min-height:100vh}
.side{width:220px;flex:0 0 220px;background:#151a24;color:#cbd2dd;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}
.brand{display:flex;flex-direction:column;gap:8px;padding:18px 18px 14px;color:#fff;border-bottom:1px solid #232a37}
.brand img{max-width:100%;max-height:42px;object-fit:contain;object-position:left;background:#fff;border-radius:6px;padding:4px 6px}
.brand span{font-weight:700;letter-spacing:.02em}
.brand:hover{text-decoration:none}
.side nav{display:flex;flex-direction:column;padding:10px;gap:2px}
.side nav a{color:#cbd2dd;padding:9px 12px;border-radius:8px}
.side nav a:hover{background:#1f2633;text-decoration:none}
.side nav a.on{background:#262e3d;color:#fff}
.side nav a.cta{color:#fff;background:var(--accent);margin-bottom:6px;font-weight:600}
.side-foot{margin-top:auto;padding:14px 18px;border-top:1px solid #232a37;display:flex;flex-direction:column;gap:2px;font-size:13px}
.side-foot a{color:#cbd2dd}
.side-foot small{color:#6b7280}
.main{flex:1;min-width:0;padding:26px 30px 60px;max-width:1500px}
.head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px;flex-wrap:wrap}
.actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.actions form{margin:0}

/* components */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px 20px;margin-bottom:16px}
.card.flush{padding:0;overflow:auto}
.btn{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:#fff;color:var(--ink);padding:8px 14px;border-radius:8px;font:inherit;font-weight:600;cursor:pointer;text-decoration:none;white-space:nowrap}
.btn:hover{border-color:#cfd3da;text-decoration:none}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.primary:hover{filter:brightness(.95)}
.btn.ghost{background:transparent}
.btn.danger{color:#b42318;border-color:#f3c4bf}
.btn.block{width:100%;justify-content:center}
.btn:disabled{opacity:.6;cursor:wait}
.flash{padding:10px 14px;border-radius:8px;margin-bottom:16px;background:#ecfdf3;color:#05603a;border:1px solid #abefc6}
.flash.err{background:#fef3f2;color:#b42318;border-color:#fecdca}
.badge{display:inline-block;font-size:11.5px;font-weight:600;padding:2px 8px;border-radius:99px;background:#eef2f6;color:#364152;text-transform:capitalize}
.badge.issued{background:#ecfdf3;color:#067647}
.badge.draft{background:#fffaeb;color:#b54708}
.badge.cancelled{background:#fef3f2;color:#b42318}

label{display:flex;flex-direction:column;gap:5px;font-size:13px;font-weight:600;color:#344054}
label small{font-weight:400;color:var(--muted)}
input,select,textarea{font:inherit;font-weight:400;color:var(--ink);border:1px solid #d0d5dd;border-radius:8px;padding:8px 10px;background:#fff;width:100%}
input:focus,select:focus,textarea:focus{outline:2px solid color-mix(in srgb,var(--accent) 35%,transparent);border-color:var(--accent)}
input[readonly]{background:#f7f8fa}
input[type=color]{padding:3px;height:38px}
input[type=file]{padding:6px}
textarea{resize:vertical}
textarea.code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12.5px;line-height:1.5;tab-size:2}
label.chk{flex-direction:row;align-items:center;gap:8px;font-weight:500}
label.chk input{width:auto}
.checks{display:flex;gap:16px;align-items:flex-end;padding-bottom:8px}

.grid2,.grid3,.grid4{display:grid;gap:14px}
.grid2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid4{grid-template-columns:repeat(4,minmax(0,1fr))}
.span2{grid-column:span 2}
.form-foot{display:flex;align-items:center;gap:14px;margin-top:16px;flex-wrap:wrap}

.tbl{width:100%;border-collapse:collapse}
.tbl th,.tbl td{padding:10px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.tbl th{font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);background:#fafbfc}
.tbl tr:last-child td{border-bottom:0}
.tbl tr.cancelled td{opacity:.55}
.tbl td.right{text-align:right}

.stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:16px 18px}
.stat b{display:block;font-size:28px;line-height:1.1}
.stat span{color:var(--muted);font-size:13px}
.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px}
.tile{display:flex;flex-direction:column;gap:2px;background:#fff;border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:var(--r);padding:14px 16px;color:var(--ink)}
.tile:hover{text-decoration:none;box-shadow:0 2px 10px rgba(16,24,40,.08)}
.tile small{color:var(--muted)}
.filters{display:flex;gap:10px;margin-bottom:14px;flex-wrap:wrap}
.filters input{max-width:340px}
.filters select{max-width:220px}
.pager{display:flex;gap:6px;margin-top:14px}
.pager a{padding:5px 11px;border:1px solid var(--line);border-radius:6px;background:#fff}
.pager a.on{background:var(--accent);color:#fff;border-color:var(--accent)}

/* compose */
.compose{display:grid;grid-template-columns:minmax(340px,1fr) minmax(0,1.15fr);gap:18px;align-items:start}
.compose-form{position:relative}
.compose-preview{position:sticky;top:16px}
.preview-bar{display:flex;justify-content:space-between;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);margin-bottom:8px}
.preview-wrap{background:#dfe3e8;border-radius:var(--r);padding:14px;max-height:calc(100vh - 80px);overflow:auto}
.preview-scale{zoom:.72;transform-origin:top left}
.preview-scale .sheet{margin:0 auto;box-shadow:0 2px 12px rgba(0,0,0,.15)}

.tpl-cols{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:16px}
.chips{display:flex;flex-wrap:wrap;gap:5px;margin-bottom:8px}
.chip{border:1px solid var(--line);background:#fafbfc;border-radius:99px;padding:2px 9px;font:12px ui-monospace,Menlo,monospace;cursor:pointer;color:#344054}
.chip:hover{border-color:var(--accent);color:var(--accent)}
.help summary{cursor:pointer}
.help p{margin:8px 0}

.media .thumb{height:90px;border:1px dashed #d0d5dd;border-radius:8px;display:flex;align-items:center;justify-content:center;margin-bottom:10px;background:repeating-conic-gradient(#f4f5f7 0 25%,#fff 0 50%) 0 0/14px 14px;padding:8px}
.media .thumb img{max-width:100%;max-height:100%;object-fit:contain}
.media>div{display:flex;flex-direction:column;gap:10px}

/* auth */
body.auth{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px}
.auth-card{width:100%;max-width:380px;display:flex;flex-direction:column;gap:14px}
.auth-card.wide{max-width:680px}
.auth-card h1{font-size:20px}
.auth-card h3{margin:6px 0 0}
.auth-logo{max-height:48px;object-fit:contain;align-self:flex-start}

/* viewer */
body.viewer{background:#d9dde3}
.toolbar{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:8px;padding:10px 16px;background:#fff;border-bottom:1px solid var(--line);flex-wrap:wrap}
.toolbar .grow{flex:1}
.toolbar form{margin:0}
.more{position:relative}
.more summary{list-style:none}
.more summary::-webkit-details-marker{display:none}
.more .menu{position:absolute;right:0;top:calc(100% + 6px);background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 10px 30px rgba(16,24,40,.15);padding:6px;min-width:280px;z-index:20}
.more .menu button{display:block;width:100%;text-align:left;border:0;background:none;padding:9px 12px;border-radius:6px;font:inherit;cursor:pointer;color:var(--ink)}
.more .menu button:hover{background:#f4f5f7}
.more .menu button.danger{color:#b42318}
.viewer-flash,.viewer-hint{max-width:210mm;margin:14px auto 0}
.viewer-hint{background:#eff8ff;color:#175cd3;border:1px solid #b2ddff;border-radius:8px;padding:9px 14px;font-size:13px}
.viewer .sheet{margin:20px auto 40px;box-shadow:0 4px 24px rgba(0,0,0,.18)}
.void-mark{position:fixed;top:45%;left:50%;transform:translate(-50%,-50%) rotate(-30deg);font:800 110px/1 system-ui,sans-serif;color:rgba(180,35,24,.14);pointer-events:none;z-index:5;letter-spacing:.05em}

@media (max-width:1100px){
  .compose,.tpl-cols{grid-template-columns:1fr}
  .compose-preview{position:static}
}
@media (max-width:760px){
  .app{flex-direction:column}
  .side{position:static;width:100%;height:auto;flex:none}
  .side nav{flex-direction:row;flex-wrap:wrap}
  .side-foot{display:none}
  .main{padding:18px 16px 40px}
  .grid2,.grid3,.grid4,.stats{grid-template-columns:1fr}
  .span2{grid-column:auto}
  .preview-scale{zoom:.45}
}