:root{
  --ink:#0A0A0A;
  --ink-2:#1F1F1F;
  --muted:#737373;
  --line:#E7E5E1;
  --paper:#FAFAF7;
  --paper-2:#F3F1EC;
  --accent:#0D5C57;
  --accent-2:#E76F51;
  --ok:#166534;
  --warn:#9A3412;
  --danger:#B91C1C;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{background:var(--paper-2);color:var(--ink);font-family:"DM Sans",system-ui,sans-serif;font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}

.admin-body{min-height:100vh;display:grid;grid-template-columns:260px 1fr}
.auth-body{min-height:100vh;display:block}

/* Sidebar */
.sidebar{
  position:sticky;top:0;height:100vh;
  background:var(--paper);border-right:1px solid var(--line);
  padding:22px 18px;display:flex;flex-direction:column;gap:18px;
}
.brand{display:flex;align-items:center;gap:12px}
.brand-logo{width:36px;height:36px;border-radius:9px;background:var(--ink);color:var(--paper);display:flex;align-items:center;justify-content:center;font-family:"Bricolage Grotesque";font-weight:700;font-size:16px;position:relative}
.brand-logo::after{content:"";position:absolute;right:-3px;bottom:-3px;width:9px;height:9px;background:var(--accent);border-radius:2px}
.brand-name{font-family:"Bricolage Grotesque";font-weight:600;font-size:16px;letter-spacing:-.01em}
.brand-sub{font-size:11px;color:var(--muted);font-family:"JetBrains Mono";letter-spacing:.1em;text-transform:uppercase;margin-top:-2px}

.nav{display:flex;flex-direction:column;gap:2px;flex:1}
.nav-link{
  display:block;padding:10px 12px;border-radius:9px;
  text-decoration:none;color:var(--ink-2);font-weight:500;font-size:13.5px;
  transition:background .15s ease,color .15s ease;
}
.nav-link:hover{background:var(--paper-2)}
.nav-link.active{background:var(--ink);color:var(--paper)}
.nav-section{font-family:"JetBrains Mono";font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin:14px 12px 4px}

.logout-form{margin-top:auto}
.block-btn{width:100%}

/* Content */
.content{padding:28px 34px 60px;min-width:0}
.topbar{display:flex;justify-content:space-between;align-items:end;margin-bottom:22px;gap:20px;flex-wrap:wrap}
.topbar-eyebrow{font-family:"JetBrains Mono";font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:6px}
.topbar-title{font-family:"Bricolage Grotesque";font-weight:600;font-size:34px;letter-spacing:-.02em;line-height:1}
.topbar-actions{display:flex;gap:8px}

/* Alerts */
.alert{border-radius:10px;padding:12px 16px;font-size:13px;margin-bottom:16px;border:1px solid transparent}
.alert-success{background:#ECFDF5;color:#166534;border-color:#A7F3D0}
.alert-error{background:#FEF2F2;color:#9F1239;border-color:#FECACA}
.alert-error ul{margin:6px 0 0 16px}

/* Panels */
.panel{background:var(--paper);border:1px solid var(--line);border-radius:14px;margin-bottom:20px;overflow:hidden}
.panel-head{display:flex;justify-content:space-between;align-items:center;padding:14px 20px;border-bottom:1px solid var(--line);gap:10px}
.panel-head h2{font-family:"Bricolage Grotesque";font-weight:600;font-size:15px;letter-spacing:-.01em}
.pad{padding:18px 20px}

/* Stats */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:20px}
.stats-money{grid-template-columns:repeat(3,1fr)}
.stat-card{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.stat-card.money{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.stat-label{font-family:"JetBrains Mono";font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.stat-card.money .stat-label{color:#B8B8B4}
.stat-value{font-family:"Bricolage Grotesque";font-weight:600;font-size:28px;letter-spacing:-.02em;margin-top:6px}
.stat-value.ok{color:#86efac}
.stat-value.warn{color:var(--accent-2)}

/* Tables */
.data-table{width:100%;border-collapse:collapse;font-size:13px}
.data-table th{text-align:left;font-family:"JetBrains Mono";font-weight:500;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);padding:12px 18px;border-bottom:1px solid var(--ink)}
.data-table td{padding:14px 18px;border-bottom:1px solid var(--line);vertical-align:middle}
.data-table tr:last-child td{border-bottom:0}
.data-table .num{text-align:right}
.data-table .mono{font-family:"JetBrains Mono";font-size:12.5px}
.row-actions{display:flex;gap:12px;justify-content:flex-end;align-items:center}
.row-actions form.inline{display:inline}

.link{color:var(--accent);text-decoration:none;font-weight:500;background:none;border:0;cursor:pointer;font-family:inherit;font-size:13px;padding:0}
.link:hover{text-decoration:underline}
.link.danger{color:var(--danger)}

/* Badges */
.badge{display:inline-block;padding:4px 10px;border-radius:999px;font-family:"DM Sans";font-weight:500;font-size:11px;letter-spacing:.02em;border:1px solid}
.badge-draft{background:#F5F5F4;color:#404040;border-color:#E7E5E1}
.badge-sent{background:#EFF6FF;color:#1E40AF;border-color:#BFDBFE}
.badge-paid{background:#ECFDF5;color:#166534;border-color:#A7F3D0}
.badge-overdue{background:#FEF2F2;color:#9F1239;border-color:#FECACA}
.badge-cancelled{background:#FAF5FF;color:#6B21A8;border-color:#E9D5FF}

/* Buttons */
.btn{font-family:"DM Sans";font-weight:500;font-size:13px;padding:10px 18px;border-radius:10px;border:1px solid var(--ink);background:var(--ink);color:#fff;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;gap:8px;transition:transform .15s ease,background .2s ease}
.btn:hover{transform:translateY(-1px);background:#000}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn.ghost:hover{background:var(--paper)}
.btn.small{padding:7px 12px;font-size:12px}
.btn-primary{background:var(--ink);color:#fff}

/* Forms */
.form-shell{max-width:1000px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:14px 18px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px 18px}
.field{display:flex;flex-direction:column;gap:6px}
.field.field-wide{grid-column:1 / -1}
.field-label{font-family:"JetBrains Mono";font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.field input, .field select, .field textarea{
  font-family:"DM Sans";font-size:13.5px;color:var(--ink);
  background:#fff;border:1px solid var(--line);border-radius:9px;padding:10px 12px;outline:none;
  transition:border .15s ease,box-shadow .15s ease;
}
.field input:focus, .field select:focus, .field textarea:focus{border-color:var(--ink);box-shadow:0 0 0 3px rgba(13,92,87,.12)}
.field textarea{resize:vertical;min-height:64px}

.check{display:flex;gap:9px;align-items:center;padding:6px 0;font-size:13px;color:var(--ink-2);cursor:pointer;margin:8px 0}
.check input{width:16px;height:16px;accent-color:var(--accent)}
.check-row{display:flex;flex-wrap:wrap;gap:12px 22px;margin-top:8px}

.form-actions{display:flex;gap:10px;margin-top:14px}

.grid-logo{display:grid;grid-template-columns:220px 1fr;gap:24px;align-items:start}
.logo-preview{width:200px;height:120px;border:1px dashed var(--line);border-radius:10px;background:#fff;display:flex;align-items:center;justify-content:center;overflow:hidden;margin-bottom:8px}
.logo-preview img{max-width:180px;max-height:100px;object-fit:contain}
.logo-preview span{font-family:"Bricolage Grotesque";font-size:56px;font-weight:700;color:var(--ink)}
.preview-box{width:100%;height:120px;border:1px dashed var(--line);border-radius:10px;background:#fff;display:flex;align-items:center;justify-content:center;overflow:hidden;margin-top:4px}
.preview-box img{max-width:180px;max-height:100px;object-fit:contain}
.mt-8{margin-top:8px}
.muted{color:var(--muted);font-size:12px}

/* Filter bar */
.filter-bar{display:flex;flex-wrap:wrap;gap:8px;background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:12px 14px;margin-bottom:16px}
.filter-bar input, .filter-bar select{font-family:"DM Sans";font-size:13px;padding:8px 12px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);outline:none}
.filter-bar input[type=text]{flex:1;min-width:220px}

/* Items editor */
.items-editor{width:100%;border-collapse:collapse}
.items-editor thead th{text-align:left;font-family:"JetBrains Mono";font-weight:500;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);padding:10px 6px;border-bottom:1px solid var(--ink)}
.items-editor thead th.num{text-align:right}
.items-editor td{padding:8px 6px;vertical-align:middle;border-bottom:1px solid var(--line)}
.items-editor td.num{text-align:right}
.items-editor input{width:100%;font-family:"DM Sans";font-size:13px;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:8px;padding:8px 10px;outline:none}
.items-editor input:focus{border-color:var(--ink);box-shadow:0 0 0 3px rgba(13,92,87,.12)}
.items-editor td.num input{text-align:right;font-family:"JetBrains Mono";font-size:12.5px}
.row-num-cell{font-family:"JetBrains Mono";font-size:11px;color:var(--muted);text-align:center}
.js-amount{font-family:"JetBrains Mono";font-size:12.5px;color:var(--ink);min-width:80px}
.icon-btn{width:28px;height:28px;border-radius:8px;border:1px solid var(--line);background:#fff;color:var(--muted);cursor:pointer;font-size:16px;line-height:1;transition:all .15s ease}
.icon-btn:hover{border-color:var(--danger);color:var(--danger);background:#fff}

.grid-form-foot{display:grid;grid-template-columns:1.1fr 1fr;gap:20px}
.totals-panel .line-out{display:flex;justify-content:space-between;align-items:baseline;padding:8px 0;border-bottom:1px dashed var(--line);font-size:13px}
.totals-panel .line-out span:first-child{color:var(--muted)}
.totals-panel .line-out b{font-family:"JetBrains Mono";font-weight:500;color:var(--ink);font-size:13px}
.totals-panel .line-out.grand{border-bottom:0;border-top:1px solid var(--ink);margin-top:10px;padding-top:14px}
.totals-panel .line-out.grand b{font-family:"Bricolage Grotesque";font-size:22px;font-weight:600;letter-spacing:-.02em}
.totals-panel .line-out.warn b{color:var(--accent-2)}
.cs{margin-right:2px}

.invoice-preview-wrap{background:var(--paper-2);border-radius:14px;padding:20px;display:flex;justify-content:center;overflow-x:auto}
.invoice-preview-wrap .sheet{transform-origin:top center}

/* Auth */
.auth-shell{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:radial-gradient(ellipse at 30% 20%,#F3F1EC 0%,#E9E7E1 100%)}
.auth-card{background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:32px 32px 28px;width:100%;max-width:400px;box-shadow:0 30px 60px -30px rgba(10,10,10,.2)}
.auth-logo{width:44px;height:44px;border-radius:10px;background:var(--ink);color:var(--paper);display:flex;align-items:center;justify-content:center;font-family:"Bricolage Grotesque";font-weight:700;font-size:20px;position:relative;margin-bottom:20px}
.auth-logo::after{content:"";position:absolute;right:-4px;bottom:-4px;width:11px;height:11px;background:var(--accent);border-radius:3px}
.auth-eyebrow{font-family:"JetBrains Mono";font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.auth-title{font-family:"Bricolage Grotesque";font-weight:600;font-size:28px;letter-spacing:-.02em;line-height:1.1;color:var(--ink)}
.auth-sub{color:var(--muted);margin-top:6px;font-size:13.5px}
.auth-form{display:flex;flex-direction:column;gap:14px;margin-top:22px}
.auth-foot{text-align:center;margin-top:22px;color:var(--muted)}
.auth-foot small{font-family:"JetBrains Mono";font-size:10.5px;letter-spacing:.1em;text-transform:uppercase}

/* Pagination */
.pagination{display:flex;gap:4px;justify-content:center;list-style:none;padding:0}
.pagination li a, .pagination li span{padding:6px 10px;border:1px solid var(--line);border-radius:7px;font-size:12px;color:var(--ink);text-decoration:none;font-family:"JetBrains Mono"}
.pagination li.active span{background:var(--ink);color:#fff;border-color:var(--ink)}

/* Responsive */
@media (max-width: 1000px){
  .admin-body{grid-template-columns:1fr}
  .sidebar{position:relative;height:auto;flex-direction:row;flex-wrap:wrap;align-items:center;padding:12px 16px}
  .brand{margin-right:auto}
  .nav{flex-direction:row;flex:0;flex-wrap:wrap;gap:6px}
  .nav-link{padding:6px 10px;font-size:12.5px}
  .nav-section{display:none}
  .logout-form{margin-top:0}
  .stats-grid,.stats-money{grid-template-columns:repeat(2,1fr)}
  .grid-2,.grid-3,.grid-form-foot,.grid-logo{grid-template-columns:1fr}
  .content{padding:20px 16px 60px}
  .topbar-title{font-size:26px}
}