:root{
  --paper:#F2E6C4; --void:#100E08; --ink:#171408;
  --red:#C62828; --gold:#E8A93A; --green:#1F7A4D;
  --gold-ink:#93641C;
  --bg:var(--paper); --bg-raised:#FBF3DC; --bg-sunken:#EAD9A8; --text:var(--ink); --text-dim:rgba(23,20,8,.62); --text-faint:rgba(23,20,8,.42);
  --line:rgba(23,20,8,.16); --accent:var(--gold); --accent-ink:var(--gold-ink);
  --font-display:"Arial Black","Helvetica Neue",Impact,"Segoe UI",sans-serif;
  --font-body:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --font-mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  --cut:10px;
  --ease:cubic-bezier(.22,1,.36,1);
  --sidebar-w:236px;
}
@media (prefers-color-scheme:dark){
  :root{ --bg:var(--void); --bg-raised:#17130B; --bg-sunken:#0B0905; --text:var(--paper); --text-dim:rgba(242,230,196,.62); --text-faint:rgba(242,230,196,.4); --line:rgba(242,230,196,.14); --accent-ink:var(--gold); }
}
:root[data-theme="dark"]{ --bg:var(--void); --bg-raised:#17130B; --bg-sunken:#0B0905; --text:var(--paper); --text-dim:rgba(242,230,196,.62); --text-faint:rgba(242,230,196,.4); --line:rgba(242,230,196,.14); --accent-ink:var(--gold); }
:root[data-theme="light"]{ --bg:var(--paper); --bg-raised:#FBF3DC; --bg-sunken:#EAD9A8; --text:var(--ink); --text-dim:rgba(23,20,8,.62); --text-faint:rgba(23,20,8,.42); --line:rgba(23,20,8,.16); --accent-ink:var(--gold-ink); }

*,*::before,*::after{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-body);line-height:1.5;-webkit-font-smoothing:antialiased}
a{color:inherit}
button{font:inherit}
input,select,textarea{font:inherit;color:inherit}
::selection{background:var(--gold);color:var(--ink)}
:focus-visible{outline:2px solid var(--accent-ink);outline-offset:2px}
.mono{font-family:var(--font-mono)}
.nums{font-variant-numeric:tabular-nums}

/* app shell */
.shell{display:flex;min-height:100vh}
.sidebar{width:var(--sidebar-w);flex:none;background:var(--bg-raised);border-right:1px solid var(--line);display:flex;flex-direction:column;position:sticky;top:0;height:100vh;padding:20px 16px}
.sb-brand{display:flex;align-items:center;gap:10px;text-decoration:none;padding:6px 8px 20px;border-bottom:1px solid var(--line);margin-bottom:16px}
.eq{display:flex;align-items:flex-end;gap:3px;height:20px;width:24px;flex:none}
.eq i{display:block;width:5px;border-radius:2px 2px 1px 1px}
.eq i:nth-child(1){background:var(--red);height:60%}
.eq i:nth-child(2){background:var(--gold);height:100%}
.eq i:nth-child(3){background:var(--green);height:76%}
.sb-brand-text{display:flex;flex-direction:column;line-height:1.15}
.sb-brand-text b{font-family:var(--font-display);text-transform:uppercase;font-size:.82rem;letter-spacing:.01em}
.sb-brand-text span{font-family:var(--font-mono);font-size:.62rem;color:var(--text-dim);letter-spacing:.05em;text-transform:uppercase}

.sb-new{display:flex;align-items:center;justify-content:center;gap:8px;background:var(--gold);color:var(--ink);border:1px solid var(--ink);text-decoration:none;font-family:var(--font-mono);font-size:.78rem;text-transform:uppercase;letter-spacing:.03em;padding:11px 14px;margin-bottom:18px;clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));box-shadow:3px 3px 0 var(--ink);transition:transform .15s var(--ease)}
.sb-new:hover{transform:translate(-1px,-1px)}

.sb-nav{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.sb-nav a{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text-dim);padding:9px 10px;border-radius:6px;font-size:.88rem}
.sb-nav a svg{width:16px;height:16px;flex:none}
.sb-nav a:hover{background:var(--bg-sunken);color:var(--text)}
.sb-nav a.active{background:var(--ink);color:var(--paper)}
:root[data-theme="dark"] .sb-nav a.active,@media (prefers-color-scheme:dark){.sb-nav a.active{background:var(--gold);color:var(--ink)}}
.sb-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:10px}
.sb-theme{border:1px solid var(--line);background:transparent;color:var(--text-dim);font-family:var(--font-mono);font-size:.68rem;padding:8px 10px;border-radius:6px;cursor:pointer;text-transform:uppercase;letter-spacing:.04em}
.sb-note{font-size:.68rem;color:var(--text-faint);line-height:1.4}
.sb-note a{color:var(--accent-ink);text-decoration:underline}

.topbar{display:none;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid var(--line);background:var(--bg-raised);position:sticky;top:0;z-index:20}
.menubtn{display:flex;flex-direction:column;justify-content:center;gap:4px;width:32px;height:32px;background:transparent;border:1px solid var(--line);border-radius:6px}
.menubtn span{display:block;height:2px;width:14px;margin:0 auto;background:var(--text)}

.main{flex:1;min-width:0;padding:36px 40px 80px}
@media (max-width:960px){
  .sidebar{position:fixed;inset:0 auto 0 0;transform:translateX(-100%);transition:transform .25s var(--ease);z-index:40;box-shadow:0 0 0 9999px rgba(0,0,0,0)}
  .sidebar.open{transform:translateX(0);box-shadow:0 0 0 9999px rgba(0,0,0,.4)}
  .topbar{display:flex}
  .main{padding:24px 18px 60px}
}

/* headings / eyebrow shared */
.eyebrow{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--accent-ink);display:inline-flex;align-items:center;gap:8px;margin-bottom:6px}
.eyebrow::before{content:"";width:14px;height:2px;background:var(--accent-ink)}
.pagehead{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;flex-wrap:wrap;margin-bottom:28px}
.pagehead h1{font-family:var(--font-display);text-transform:uppercase;letter-spacing:-.01em;font-size:clamp(1.5rem,3vw,2.1rem);margin:0}
.pagehead p{color:var(--text-dim);font-size:.9rem;margin:4px 0 0}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:.78rem;letter-spacing:.02em;text-transform:uppercase;text-decoration:none;padding:11px 18px;border:1px solid var(--ink);cursor:pointer;background:var(--gold);color:var(--ink);clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));transition:transform .15s var(--ease);box-shadow:3px 3px 0 var(--ink)}
.btn:hover{transform:translate(-1px,-1px)}
.btn:active{transform:translate(0,0);box-shadow:1px 1px 0 var(--ink)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--line);box-shadow:none;clip-path:none;border-radius:6px}
.btn-ghost:hover{border-color:var(--accent-ink);transform:none}
.btn-danger{background:var(--red);color:#fff;border-color:var(--red)}
.btn-sm{padding:7px 12px;font-size:.7rem}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none}
.btnrow{display:flex;gap:10px;flex-wrap:wrap}
.iconbtn{width:32px;height:32px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);background:transparent;border-radius:6px;cursor:pointer;color:var(--text-dim)}
.iconbtn:hover{border-color:var(--accent-ink);color:var(--text)}
.iconbtn svg{width:15px;height:15px}

/* stat tiles */
.stats-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:32px}
@media (max-width:800px){.stats-row{grid-template-columns:repeat(2,minmax(0,1fr))}}
.stat-tile{background:var(--bg-raised);border:1px solid var(--line);padding:18px 20px;border-radius:8px;min-width:0;overflow:hidden}
.stat-tile .v{overflow-wrap:break-word}
.stat-tile .k{font-family:var(--font-mono);font-size:.68rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-dim);display:flex;justify-content:space-between;align-items:center}
.stat-tile .v{font-family:var(--font-display);font-size:1.7rem;margin-top:8px}
.stat-tile.warn .v{color:var(--red)}
.stat-tile.good .v{color:var(--green)}
.stat-tile.pend .v{color:var(--accent-ink)}

/* panel / card */
.panel{background:var(--bg-raised);border:1px solid var(--line);border-radius:10px;padding:24px;margin-bottom:24px}
.panel h2{font-family:var(--font-body);font-weight:700;font-size:1rem;margin:0 0 16px;text-transform:none}
.panel-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.panel-head h2{margin:0}

/* tables */
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:8px;background:var(--bg-raised)}
table.dt{width:100%;border-collapse:collapse;font-size:.86rem;min-width:640px}
table.dt th{text-align:left;font-family:var(--font-mono);font-size:.66rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-dim);padding:12px 16px;border-bottom:1px solid var(--line);white-space:nowrap}
table.dt td{padding:13px 16px;border-bottom:1px solid var(--line);vertical-align:middle}
table.dt tbody tr:last-child td{border-bottom:none}
table.dt tbody tr{cursor:pointer;transition:background .12s}
table.dt tbody tr:hover{background:var(--bg-sunken)}
.cell-num{text-align:right;font-variant-numeric:tabular-nums}
.cell-muted{color:var(--text-dim)}
.rowactions{display:flex;gap:6px;justify-content:flex-end}

/* status pill */
.pill{display:inline-flex;align-items:center;gap:6px;font-family:var(--font-mono);font-size:.66rem;text-transform:uppercase;letter-spacing:.04em;padding:4px 10px 4px 8px;border-radius:999px;border:1px solid transparent}
.pill::before{content:"";width:6px;height:6px;border-radius:50%;flex:none}
.pill-draft{background:rgba(23,20,8,.08);color:var(--text-dim);border-color:var(--line)}
.pill-draft::before{background:var(--text-dim)}
.pill-sent{background:rgba(232,169,58,.16);color:var(--gold-ink)}
.pill-sent::before{background:var(--gold)}
.pill-paid{background:rgba(31,122,77,.14);color:var(--green)}
.pill-paid::before{background:var(--green)}
.pill-overdue{background:rgba(198,40,40,.14);color:var(--red)}
.pill-overdue::before{background:var(--red)}
:root[data-theme="dark"] .pill-sent,@media (prefers-color-scheme:dark){.pill-sent{color:var(--gold)}}

/* toolbar / filters */
.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:18px}
.search{position:relative;flex:1;min-width:180px}
.search input{width:100%;padding:10px 12px 10px 34px;border:1px solid var(--line);border-radius:6px;background:var(--bg);color:var(--text)}
.search svg{position:absolute;left:11px;top:50%;transform:translateY(-50%);width:14px;height:14px;color:var(--text-faint)}
.chipset{display:flex;gap:6px;flex-wrap:wrap}
.filterchip{border:1px solid var(--line);background:transparent;color:var(--text-dim);padding:8px 13px;border-radius:999px;font-size:.76rem;cursor:pointer;font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.03em}
.filterchip.active{background:var(--ink);color:var(--paper);border-color:var(--ink)}
:root[data-theme="dark"] .filterchip.active,@media (prefers-color-scheme:dark){.filterchip.active{background:var(--gold);color:var(--ink)}}

/* forms */
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}
.field label{font-family:var(--font-mono);font-size:.68rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-dim)}
.field input,.field select,.field textarea{border:1px solid var(--line);background:var(--bg);color:var(--text);padding:10px 12px;border-radius:6px;width:100%}
.field textarea{resize:vertical;min-height:70px}
.field .hint{font-size:.72rem;color:var(--text-faint)}
.field.err input,.field.err select{border-color:var(--red)}
.field .errmsg{font-size:.72rem;color:var(--red)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.grid3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:18px}
@media (max-width:700px){.grid2,.grid3{grid-template-columns:1fr}}

/* line items editor */
.items-table{width:100%;border-collapse:collapse;margin-bottom:12px}
.items-table th{text-align:left;font-family:var(--font-mono);font-size:.62rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-dim);padding:0 8px 8px;font-weight:400}
.items-table td{padding:6px 8px;vertical-align:top}
.items-table input{border:1px solid var(--line);background:var(--bg);color:var(--text);padding:9px 10px;border-radius:6px;width:100%}
.items-table .col-desc{width:46%}
.items-table .col-qty{width:12%}
.items-table .col-rate{width:16%}
.items-table .col-amt{width:16%;text-align:right;padding-top:10px;font-variant-numeric:tabular-nums;white-space:nowrap}
.items-table .col-del{width:36px}
.additem{border:1px dashed var(--line);background:transparent;color:var(--text-dim);width:100%;padding:10px;border-radius:6px;cursor:pointer;font-size:.82rem}
.additem:hover{border-color:var(--accent-ink);color:var(--text)}

.totals{margin-left:auto;max-width:320px;display:flex;flex-direction:column;gap:8px}
.totals-row{display:flex;justify-content:space-between;font-size:.9rem}
.totals-row.grand{border-top:1px solid var(--line);padding-top:10px;margin-top:4px;font-family:var(--font-display);font-size:1.3rem}
.totals-row .lbl{color:var(--text-dim)}
.totals-row.grand .lbl{color:var(--text);font-family:var(--font-body);font-weight:700;font-size:.9rem}

/* invoice document view */
.docwrap{background:var(--bg-raised);border:1px solid var(--line);border-radius:10px;padding:44px;max-width:820px}
@media (max-width:640px){.docwrap{padding:24px 20px}}
.doc-head{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;margin-bottom:36px;flex-wrap:wrap}
.doc-brand{display:flex;align-items:center;gap:10px}
.doc-brand b{font-family:var(--font-display);text-transform:uppercase;font-size:1.1rem}
.doc-title{text-align:right}
.doc-title h1{font-family:var(--font-display);text-transform:uppercase;font-size:1.6rem;margin:0}
.doc-title .num{font-family:var(--font-mono);color:var(--text-dim);font-size:.85rem;margin-top:4px}
.doc-meta{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-bottom:32px;padding-bottom:24px;border-bottom:1px solid var(--line)}
@media (max-width:640px){.doc-meta{grid-template-columns:1fr}}
.doc-meta .k{font-family:var(--font-mono);font-size:.64rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-dim);margin-bottom:6px}
.doc-meta .v{font-size:.92rem}
.doc-meta address{font-style:normal;line-height:1.5}
table.doc-items{width:100%;border-collapse:collapse;margin-bottom:24px}
table.doc-items th{text-align:left;font-family:var(--font-mono);font-size:.64rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-dim);padding:0 10px 10px;border-bottom:1px solid var(--line)}
table.doc-items td{padding:12px 10px;border-bottom:1px solid var(--line);font-size:.9rem}
table.doc-items td.n{text-align:right;font-variant-numeric:tabular-nums}
.doc-notes{margin-top:28px;padding-top:20px;border-top:1px solid var(--line);font-size:.85rem;color:var(--text-dim);white-space:pre-wrap}
.doc-foot{margin-top:40px;padding-top:16px;border-top:2px solid var(--ink);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-family:var(--font-mono);font-size:.68rem;color:var(--text-faint)}
.doc-items{table-layout:fixed}
.doc-items td{overflow-wrap:break-word}

/* empty state */
.empty{text-align:center;padding:64px 20px;color:var(--text-dim)}
.empty svg{width:40px;height:40px;margin:0 auto 16px;opacity:.5}
.empty h3{font-size:1rem;color:var(--text);margin:0 0 6px}
.empty p{font-size:.86rem;margin:0 0 20px}

/* modal */
.modal-backdrop{position:fixed;inset:0;background:rgba(16,14,8,.55);display:flex;align-items:center;justify-content:center;z-index:100;padding:20px}
.modal{background:var(--bg-raised);border:1px solid var(--line);border-radius:10px;padding:26px;width:100%;max-width:420px;max-height:90vh;overflow-y:auto}
.modal h3{margin:0 0 18px;font-size:1.05rem}

/* toast */
.toaststack{position:fixed;bottom:20px;right:20px;display:flex;flex-direction:column;gap:8px;z-index:200}
.toast{background:var(--ink);color:var(--paper);padding:12px 18px;border-radius:8px;font-size:.84rem;box-shadow:0 8px 24px rgba(0,0,0,.25);display:flex;align-items:center;gap:10px;animation:toastin .25s var(--ease)}
.toast.error{background:var(--red)}
.toast.success::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--green);flex:none}
@keyframes toastin{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

/* bars */
.sparkbars{display:flex;align-items:flex-end;gap:8px;height:120px;margin-top:8px}
.sparkbars .col{flex:1;display:flex;flex-direction:column;align-items:center;gap:8px;height:100%;justify-content:flex-end}
.sparkbars .bar{width:100%;background:var(--gold);border-radius:3px 3px 1px 1px;min-height:3px}
.sparkbars .lbl{font-family:var(--font-mono);font-size:.6rem;color:var(--text-faint)}

.demo-banner{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;background:rgba(232,169,58,.12);border:1px solid var(--gold);border-radius:8px;padding:12px 16px;margin-bottom:24px;font-size:.82rem}
.demo-banner b{color:var(--accent-ink)}

.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;background:var(--void)}
.login-card{width:100%;max-width:360px;background:var(--bg-raised);border:1px solid var(--line);border-radius:12px;padding:32px}
.login-title{font-family:var(--font-display);text-transform:uppercase;font-size:1.15rem;text-align:center;margin:0 0 4px}
.login-sub{text-align:center;color:var(--text-dim);font-size:.86rem;margin:0 0 24px}
.login-err{background:rgba(198,40,40,.12);color:var(--red);border:1px solid var(--red);border-radius:6px;padding:9px 12px;font-size:.82rem;margin:-4px 0 16px}

@media print{
  .sidebar,.topbar,.pagehead .btnrow,.doc-actions,.demo-banner,.toaststack{display:none !important}
  .main{padding:0}
  .shell{display:block}
  body{background:#fff;color:#111}
  .docwrap{border:none;box-shadow:none;padding:0;max-width:none;background:#fff}
}