:root{
  --bg:#f3f5f8;
  --panel:#ffffff;
  --text:#111827;
  --muted:#6b7280;
  --line:#e5e7eb;
  --dark:#101827;
  --dark2:#172033;
  --accent:#176b5d;
  --accent2:#0f766e;
  --danger:#b42318;
  --warning:#9a6700;
  --success:#167347;
  --shadow:0 18px 50px rgba(15,23,42,.08);
}
*{box-sizing:border-box}
body{margin:0;background:linear-gradient(180deg,#eef2f7 0,#f7f8fb 220px,#f3f5f8 100%);color:var(--text);font-family:Inter,Segoe UI,Arial,sans-serif;font-size:14px;line-height:1.45}
a{color:var(--accent);text-decoration:none}
a:hover{color:#0f5f54}
.wrap{max-width:1240px;margin:0 auto;padding:0 24px}
.topbar{background:linear-gradient(135deg,var(--dark),var(--dark2));color:#fff;border-bottom:1px solid rgba(255,255,255,.08);position:sticky;top:0;z-index:20}
.topbar-inner{min-height:74px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;color:#fff;min-width:240px}.brand:hover{color:#fff}
.brand b{display:block;font-size:17px;letter-spacing:.2px}.brand small{display:block;color:#aab4c4;font-size:12px;margin-top:2px}
.brand-mark{width:40px;height:40px;border-radius:13px;background:linear-gradient(135deg,#19a58e,#0f766e);display:inline-flex;align-items:center;justify-content:center;color:#fff;font-weight:800;box-shadow:0 12px 24px rgba(15,118,110,.28);flex:0 0 auto}.brand-mark.big{width:52px;height:52px;border-radius:17px;font-size:22px}
.nav{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:flex-end}.nav a{color:#d7deea;padding:9px 12px;border-radius:11px;font-weight:700;font-size:13px;display:inline-flex;align-items:center;gap:8px}.nav a:hover,.nav a.active{background:rgba(255,255,255,.10);color:#fff}
.page{padding-top:26px;padding-bottom:52px}
.hero{background:linear-gradient(135deg,#fff,#f9fbfc);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);padding:28px;display:flex;justify-content:space-between;align-items:center;gap:24px;margin-bottom:18px}.hero.compact{padding:24px}.hero h1{margin:0 0 8px;font-size:30px;letter-spacing:-.6px;display:flex;align-items:center;gap:12px}.hero p{margin:0;color:var(--muted);font-size:15px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:18px 0}.stat{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:0 10px 30px rgba(15,23,42,.04);position:relative;overflow:hidden}.stat i{position:absolute;right:18px;top:18px;color:#d7dee9;font-size:23px}.stat span{font-size:28px;font-weight:850;letter-spacing:-.5px}.stat p{margin:4px 0 0;color:var(--muted)}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:20px;margin:18px 0;box-shadow:0 10px 35px rgba(15,23,42,.05)}.panel h1,.panel h2{margin-top:0}.panel h2{padding:18px 20px;margin:0;border-bottom:1px solid var(--line);font-size:17px;display:flex;align-items:center;gap:9px}.table-panel{padding:0;overflow:hidden}.form-panel{max-width:930px}.empty{text-align:center;padding:48px}.empty p{color:var(--muted)}
.filterbar{display:grid;grid-template-columns:2fr 220px 190px auto auto;gap:12px;align-items:center}.filterbar input,.filterbar select{height:46px}.searchbar{display:flex;gap:12px;align-items:center}.searchbar input{height:46px}
.stacked-form{display:block}.stacked-form > label:first-child{margin-top:0}
label{display:block;font-weight:800;margin:16px 0 8px;color:#374151;font-size:13px}label i{color:#64748b;margin-right:6px}input,select,textarea{width:100%;border:1px solid #d6dbe3;border-radius:12px;background:#fff;padding:11px 12px;color:#111827;font-size:14px;outline:none}input:focus,select:focus,textarea:focus{border-color:#1b8f7d;box-shadow:0 0 0 4px rgba(15,118,110,.11)}textarea{min-height:96px;resize:vertical}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px}.choice-box{background:#f8fafc;border:1px solid var(--line);border-radius:16px;padding:15px;margin:16px 0}.choice-box.compact{margin:0;align-self:end}.choice-box b{display:block;margin-bottom:8px}.choice-box label,.check{display:flex;gap:10px;align-items:center;font-weight:700;margin:9px 0}.choice-box input,.check input{width:auto}.check.inline{margin:0;white-space:nowrap}.form-actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:18px}.user-form{display:grid;grid-template-columns:1fr 1.45fr 1fr 1fr auto auto;gap:12px;align-items:center}.user-form input,.user-form select{height:44px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:12px;background:linear-gradient(135deg,var(--accent2),var(--accent));color:#fff;padding:10px 15px;font-weight:850;cursor:pointer;white-space:nowrap;box-shadow:0 10px 22px rgba(15,118,110,.18);line-height:1.2;min-height:40px}.btn:hover{filter:brightness(.97);color:#fff}.btn.large{padding:13px 19px;min-height:46px}.btn.full{width:100%;margin-top:20px;height:48px}.btn.secondary{background:#263244;box-shadow:none}.btn.ghost{background:#eef4f3;color:#0f5f54;box-shadow:none}.btn.danger{background:var(--danger);box-shadow:none}.btn.disabled{background:#e5e7eb;color:#6b7280;box-shadow:none;cursor:not-allowed}.btn.smallbtn,.smallbtn{padding:8px 11px;min-height:34px;font-size:12px}
.table{width:100%;border-collapse:collapse;background:#fff}.table th,.table td{border-bottom:1px solid var(--line);padding:15px 16px;text-align:left;vertical-align:middle}.table th{background:#f8fafc;color:#64748b;text-transform:uppercase;font-size:11px;letter-spacing:.7px}.table tr:hover td{background:#fbfcfe}.doc-title{font-weight:850;color:#111827;display:inline-flex;gap:8px;align-items:center}.doc-title i{color:#0f766e}.muted{color:var(--muted);font-size:12px;margin-top:4px}.small{font-size:12px}.empty-cell{text-align:center;color:var(--muted);padding:30px!important}.actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.actions.right{justify-content:flex-end;max-width:360px}.actions form{margin:0}
.badge,.pill,.severity{display:inline-flex;align-items:center;border-radius:999px;padding:5px 10px;font-size:12px;font-weight:850;white-space:nowrap}.badge.internal{background:#e7f7ef;color:#167347}.badge.confidential{background:#fff3d6;color:#8a5a00}.badge.strict{background:#fee7e5;color:#b42318}.pill.ok{background:#e7f7ef;color:#167347}.pill.off{background:#eef2f7;color:#64748b}.pill.danger{background:#fee7e5;color:#b42318}.severity.info{background:#eef2f7;color:#475569}.severity.warning{background:#fff3d6;color:#8a5a00}.severity.critical{background:#fee7e5;color:#b42318}
.doc-head{background:#fff;border:1px solid var(--line);border-radius:22px;padding:24px;display:flex;justify-content:space-between;gap:22px;align-items:flex-start;margin-bottom:18px;box-shadow:var(--shadow)}.doc-head h1{font-size:28px;margin:8px 0 10px;letter-spacing:-.4px;display:flex;align-items:center;gap:10px}.doc-head p{color:#4b5563;max-width:780px}.back{font-weight:850;color:#64748b;display:inline-flex;align-items:center;gap:8px}.meta{display:flex;gap:10px;align-items:center;flex-wrap:wrap;color:#64748b}.meta span{display:inline-flex;align-items:center;gap:6px}.compact-table{margin-top:0}
.viewer{position:relative;background:#101827;border-radius:22px;overflow:hidden;min-height:680px;box-shadow:var(--shadow);border:1px solid #0f172a;user-select:none}.viewer iframe,.viewer img{width:100%;height:680px;border:0;background:#fff;display:block}.image-view{display:flex;align-items:center;justify-content:center;background:#0f172a}.image-view img{object-fit:contain}.watermark{position:absolute;inset:0;pointer-events:none;display:flex;align-items:center;justify-content:center;opacity:.13;transform:rotate(-24deg);font-size:42px;font-weight:900;color:#111827;text-align:center;line-height:1.45;letter-spacing:.5px}.viewer-note{background:#fff;border:1px dashed #cbd5e1;border-radius:22px;padding:44px;text-align:center;color:#4b5563;box-shadow:var(--shadow)}.viewer-note h3{font-size:22px;margin-top:0;display:flex;align-items:center;justify-content:center;gap:10px;color:#111827}
.login-shell{min-height:calc(100vh - 130px);display:flex;align-items:center;justify-content:center}.login-card{width:100%;max-width:440px;background:#fff;border:1px solid var(--line);border-radius:24px;padding:30px;box-shadow:var(--shadow)}.login-title{display:flex;gap:14px;align-items:center;margin-bottom:22px}.login-title h1{margin:0;font-size:25px}.login-title p{margin:4px 0 0;color:var(--muted)}.hint{color:var(--muted);font-size:12px;text-align:center;margin:18px 0 0}.notice{border-radius:14px;padding:12px 14px;margin:14px 0;font-weight:750;display:flex;gap:9px;align-items:center}.notice.danger{background:#fee7e5;color:#b42318}.notice.warning{background:#fff3d6;color:#8a5a00}.notice.success{background:#e7f7ef;color:#167347}.success-card{max-width:900px}.share-box{margin:15px 0}.share-box input{font-weight:750;background:#f8fafc}.share-box label{color:#64748b}.danger-text{color:var(--danger);font-weight:850}.mini-dashboard{display:flex;gap:12px;flex-wrap:wrap;color:#64748b;margin:18px 0}.mini-dashboard div{background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px 14px;box-shadow:0 8px 22px rgba(15,23,42,.04)}.mini-dashboard i{color:#0f766e;margin-right:7px}
@media(max-width:980px){.topbar-inner{height:auto;padding:16px 0;display:block}.nav{margin-top:14px;justify-content:flex-start}.hero,.doc-head{display:block}.stats{grid-template-columns:repeat(2,1fr)}.grid2,.user-form,.filterbar{grid-template-columns:1fr}.filterbar .btn{width:100%}.searchbar{display:block}.searchbar .btn{margin-top:10px}.table{display:block;overflow-x:auto}.viewer,.viewer iframe,.viewer img{height:520px;min-height:520px}.watermark{font-size:28px}.wrap{padding:0 16px}.actions.right{justify-content:flex-start;max-width:none;margin-top:16px}}
@media(max-width:560px){.stats{grid-template-columns:1fr}.btn{width:100%}.actions{width:100%}.actions .btn,.actions form,.actions button{width:100%}.nav a span{display:none}.brand{min-width:auto}.hero h1{font-size:25px}}

/* v4: document list and spacing fixes */
.wrap{max-width:1320px}
.documents-panel{padding:18px;overflow:visible}
.section-title{display:flex;align-items:center;gap:9px;color:#334155;font-weight:900;text-transform:uppercase;font-size:12px;letter-spacing:.7px;margin:0 0 14px}.section-title i{color:#0f766e}
.document-list{display:grid;gap:12px}
.doc-card{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:18px;align-items:center;background:#fff;border:1px solid #e4e8ef;border-radius:18px;padding:18px;box-shadow:0 8px 22px rgba(15,23,42,.04)}
.doc-card:hover{border-color:#d4dde8;box-shadow:0 14px 32px rgba(15,23,42,.07)}
.doc-card-main{min-width:0}.doc-card .doc-title{font-size:15px}.doc-filename{margin-top:5px;color:#64748b;font-size:12px;max-width:100%;overflow-wrap:anywhere;word-break:break-word;line-height:1.35}.doc-card-meta{display:flex;align-items:center;gap:9px 10px;flex-wrap:wrap;margin-top:12px;color:#64748b;font-size:12px}.doc-card-meta span:not(.badge):not(.pill){display:inline-flex;align-items:center;gap:6px;background:#f8fafc;border:1px solid #edf1f5;border-radius:999px;padding:5px 9px;max-width:100%}.doc-card-actions{display:flex;gap:10px;align-items:center;justify-content:flex-end;flex-wrap:wrap;min-width:310px}.doc-card-actions .btn{margin:0}.btn{margin:0}.filterbar .btn{min-height:46px}.table-panel{overflow:auto}.table{min-width:760px}.doc-head{overflow:hidden}.doc-head .actions{gap:10px}.doc-head .meta span{max-width:100%;overflow-wrap:anywhere}.actions{gap:10px 12px}.form-actions{gap:12px 14px}.stacked-form .btn,.filterbar .btn,.searchbar .btn{margin-top:0}
@media(max-width:1120px){.doc-card{grid-template-columns:1fr}.doc-card-actions{justify-content:flex-start;min-width:0}.documents-panel{padding:14px}.table{min-width:860px}}
@media(max-width:560px){.doc-card-actions,.doc-card-actions .btn{width:100%}.doc-card{padding:15px}.doc-card-meta span:not(.badge):not(.pill){width:100%;justify-content:flex-start}.section-title{margin-bottom:10px}}

/* v6: normal spreadsheet preview */
.sheet-viewer{background:#ffffff;border-color:#d9e2ef;min-height:760px;overflow:hidden}
.sheet-viewer iframe{height:760px;background:#ffffff}
.sheet-viewer .watermark{color:#0f172a;opacity:.10;font-size:38px;z-index:2}
@media(max-width:980px){.sheet-viewer,.sheet-viewer iframe{height:620px;min-height:620px}}

/* v6: professional document viewer */
.viewer-shell{position:relative;background:#eef2f7;border:1px solid #dbe3ec;border-radius:22px;overflow:hidden;box-shadow:var(--shadow);min-height:720px;user-select:none;margin:18px 0 26px}
.viewer-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px;background:#fff;border-bottom:1px solid #e4e8ef;position:sticky;top:0;z-index:5}
.viewer-toolbar-left,.viewer-toolbar-right{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.viewer-status{display:inline-flex;align-items:center;gap:7px;padding:8px 10px;border-radius:999px;background:#f1f5f9;color:#334155;font-weight:850;font-size:12px}.viewer-btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;border:1px solid #d9e1ea;background:#fff;color:#21314a;border-radius:11px;padding:8px 10px;font-weight:850;cursor:pointer;min-height:36px}.viewer-btn:hover{background:#f8fafc;border-color:#c9d4e2}.pdf-canvas-wrap{position:relative;background:#f8fafc;min-height:680px;max-height:78vh;overflow:auto;padding:26px;display:flex;align-items:flex-start;justify-content:center}.pdf-canvas-wrap canvas{background:#fff;box-shadow:0 12px 32px rgba(15,23,42,.18);border-radius:2px}.viewer-watermark{z-index:3;color:#0f172a;opacity:.095;font-size:40px}.viewer-error{margin:auto;background:#fff;border:1px dashed #cbd5e1;border-radius:18px;padding:34px;text-align:center;color:#64748b;max-width:620px}.viewer-error h3{color:#111827;margin:0 0 10px;font-size:22px}.excel-frame-wrap{position:relative;background:#f8fafc;min-height:680px;height:78vh;overflow:hidden}.excel-frame{width:100%;height:100%;border:0;background:#fff;display:block}.image-shell{background:#0f172a;min-height:720px;display:flex;align-items:center;justify-content:center}.image-viewer{width:100%;min-height:720px;display:flex;align-items:center;justify-content:center;padding:22px;background:#111827}.image-viewer img{max-width:100%;max-height:76vh;object-fit:contain;border-radius:12px;box-shadow:0 16px 44px rgba(0,0,0,.25)}.viewer-note{margin:18px 0 26px}.pdf-shell:fullscreen,.excel-shell:fullscreen,.image-shell:fullscreen{border-radius:0;min-height:100vh}.pdf-shell:fullscreen .pdf-canvas-wrap,.excel-shell:fullscreen .excel-frame-wrap{height:calc(100vh - 62px);max-height:none}.pdf-shell:fullscreen .viewer-toolbar,.excel-shell:fullscreen .viewer-toolbar{border-radius:0}.pdf-shell:fullscreen .pdf-canvas-wrap{min-height:calc(100vh - 62px)}
@media(max-width:760px){.viewer-shell{min-height:620px;border-radius:18px}.viewer-toolbar{align-items:flex-start;display:block}.viewer-toolbar-right{margin-top:9px}.viewer-btn{font-size:12px;padding:7px 9px}.pdf-canvas-wrap{min-height:560px;max-height:74vh;padding:16px}.excel-frame-wrap{height:72vh}.viewer-watermark{font-size:26px}.image-viewer{min-height:560px}.image-shell{min-height:560px}}