:root{
  --bg:#f8fafc;
  --card:#ffffff;
  --border:#e5e7eb;
  --text:#111827;
  --muted:#6b7280;
  --orange:#ff6600;
  --orange-dark:#e65c00;
  --black:#111827;
  --success:#166534;
  --success-bg:#dcfce7;
  --warning:#92400e;
  --warning-bg:#fef3c7;
  --danger:#991b1b;
  --danger-bg:#fee2e2;
  --neutral-bg:#f3f4f6;
  --shadow:0 10px 28px rgba(15,23,42,.06);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);min-height:100vh}
a{color:inherit}
.page-shell{max-width:1440px;margin:0 auto;padding:22px 14px 36px}
.page-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:16px}
.brand{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.brand img{height:28px;width:auto;display:block}
.page-title{margin:0;font-size:24px;line-height:1.1}
.page-subtitle{margin:4px 0 0;color:var(--muted);font-size:13px}
.nav-actions,.inline-actions,.toolbar{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.toolbar{justify-content:space-between;margin-bottom:12px}
.card{background:var(--card);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow);padding:16px;margin-bottom:14px}
.card h1,.card h2,.card h3{margin-top:0}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
label{display:block;font-size:12px;color:var(--muted);margin-bottom:5px}
input[type="text"],input[type="email"],input[type="password"],input[type="number"],input[type="date"],input[type="file"],select,textarea{
  width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--text);font-size:14px;outline:none
}
input:focus,select:focus,textarea:focus{border-color:#cbd5e1;box-shadow:0 0 0 3px rgba(255,102,0,.08)}
textarea{min-height:110px;resize:vertical}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border-radius:999px;border:none;padding:10px 14px;font-size:13px;font-weight:700;text-decoration:none;cursor:pointer;transition:.18s ease}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:var(--orange-dark)}
.btn-dark{background:var(--black);color:#fff}
.btn-outline{background:#fff;color:var(--text);border:1px solid var(--border)}
.btn-danger{background:#fff;color:var(--danger);border:1px solid #fecaca}
.btn-sm{padding:7px 10px;font-size:12px}
.badge{display:inline-flex;align-items:center;padding:4px 9px;border-radius:999px;font-size:11px;font-weight:800;border:1px solid transparent;white-space:nowrap}
.badge-success{background:var(--success-bg);color:var(--success)}
.badge-warning{background:var(--warning-bg);color:var(--warning)}
.badge-danger{background:var(--danger-bg);color:var(--danger)}
.badge-neutral{background:var(--neutral-bg);color:#374151}
.muted{color:var(--muted)}
.small{font-size:12px;color:var(--muted)}
.table-wrap{overflow:auto}
table{width:100%;border-collapse:collapse}
th,td{padding:11px 10px;border-bottom:1px solid #eef2f7;text-align:left;vertical-align:top;font-size:13px}
th{font-size:12px;color:var(--muted);background:#fafafa;white-space:nowrap}
.empty{border:1px dashed var(--border);border-radius:14px;padding:22px;text-align:center;color:var(--muted);background:#fff}
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.stat-card{background:#fff;border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow);padding:14px}
.stat-label{font-size:12px;color:var(--muted);margin-bottom:6px}
.stat-value{font-size:28px;font-weight:800;line-height:1}
.stat-sub{font-size:12px;color:var(--muted);margin-top:6px}
.login-shell{min-height:100vh;display:grid;place-items:center;padding:24px;background:linear-gradient(180deg,#f8fafc 0%,#fff7f2 100%)}
.login-card{width:min(100%,420px);background:#fff;border:1px solid var(--border);border-radius:20px;box-shadow:0 18px 45px rgba(15,23,42,.09);padding:28px}
.login-brand{text-align:center;margin-bottom:18px}
.login-brand img{height:48px;width:auto;margin:0 auto 12px;display:block}
.login-brand h1{margin:0 0 6px;font-size:24px}
.login-brand p{margin:0;color:var(--muted);font-size:13px}
.error-box,.success-box,.info-box{padding:10px 12px;border-radius:12px;font-size:13px;margin-bottom:12px}
.error-box{background:var(--danger-bg);color:var(--danger)}
.success-box{background:var(--success-bg);color:var(--success)}
.info-box{background:#eff6ff;color:#1d4ed8}
.menu-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.menu-link{display:block;background:#fff;border:1px solid var(--border);border-radius:14px;padding:14px;text-decoration:none;box-shadow:var(--shadow)}
.menu-link:hover{border-color:#d1d5db;background:#fcfcfd}
.menu-link strong{display:block;margin-bottom:5px}
.search-row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.search-row input,.search-row select{width:auto;min-width:180px}
.section-stack > * + *{margin-top:12px}
.folder{border:1px solid var(--border);border-radius:14px;overflow:hidden;background:#fff}
.folder header{display:flex;align-items:center;justify-content:space-between;gap:12px;cursor:pointer;padding:14px 16px;background:#fafafa}
.folder-title{font-size:16px;font-weight:700}
.folder-meta{font-size:13px;color:var(--muted)}
.folder-body{display:none;padding:14px 16px}
.folder.open .folder-body{display:block}
.verify-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.readonly{padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:#f9fafb;font-size:14px}
.thumb-box img{max-width:240px;border:1px solid var(--border);border-radius:12px;display:block}
.helper-text{font-size:12px;color:var(--muted);margin-top:4px}
.link-clean{text-decoration:none}
@media (max-width:1100px){.grid-4,.stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.menu-grid{grid-template-columns:1fr}.verify-grid{grid-template-columns:1fr}}
@media (max-width:768px){.page-shell{padding:16px 10px 28px}.grid-2,.grid-3,.grid-4,.stats-grid{grid-template-columns:1fr}.search-row input,.search-row select{width:100%;min-width:0}.page-title{font-size:22px}}

.pdf-panel{border-top:1px solid var(--border);padding-top:18px}
.pdf-frame-wrap{border:1px solid var(--border);border-radius:16px;overflow:hidden;background:#fff;box-shadow:var(--shadow)}
.pdf-frame{display:block;width:100%;height:760px;border:0;background:#fff}
@media (max-width:768px){.pdf-frame{height:520px}}

.verify-hero{display:grid;grid-template-columns:1.15fr .85fr;gap:16px;align-items:start}
.verify-title{margin:0 0 8px;font-size:28px;line-height:1.05}
.verify-copy{margin:0;color:var(--muted);font-size:14px;max-width:62ch}
.verify-meta{display:grid;gap:10px}
.meta-item{border:1px solid var(--border);border-radius:14px;background:#fbfcfd;padding:12px 14px}
.meta-label{display:block;font-size:11px;color:var(--muted);margin-bottom:5px;text-transform:uppercase;letter-spacing:.04em}
.artwork-card{padding-bottom:20px}
.artwork-box{display:flex;justify-content:flex-start}
.artwork-box img{max-width:min(100%,520px);width:auto;border:1px solid var(--border);border-radius:16px;display:block;box-shadow:var(--shadow)}
.validate-note p{margin:0 0 10px;color:#374151;line-height:1.6}
@media (max-width:1100px){.verify-hero{grid-template-columns:1fr}.artwork-box img{max-width:100%}}