:root{
  --navy:#0f1f3d;
  --navy-deep:#0a1730;
  --blue:#3b82f6;
  --blue-soft:#dbeafe;
  --canvas:#f5f7fb;
  --surface:#ffffff;
  --ink:#0f1f3d;
  --ink-soft:#4b5768;
  --ink-faint:#8592a6;
  --line:#e2e6ee;
  --red:#dc2626;
  --green:#15803d;
  --amber:#b45309;
  --radius:10px;
  --shadow:0 1px 2px rgba(15,31,61,.06), 0 8px 24px rgba(15,31,61,.06);
}

@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --canvas:#0a1226;
    --surface:#101b34;
    --ink:#e8edf7;
    --ink-soft:#aab4c8;
    --ink-faint:#6c7994;
    --line:#22304e;
    --blue-soft:#152847;
    --shadow:0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.3);
  }
}
:root[data-theme="dark"]{
  --canvas:#0a1226;
  --surface:#101b34;
  --ink:#e8edf7;
  --ink-soft:#aab4c8;
  --ink-faint:#6c7994;
  --line:#22304e;
  --blue-soft:#152847;
  --shadow:0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.3);
}

*{box-sizing:border-box;}
html,body{margin:0;padding:0;overflow-x:hidden;}
body{
  background:var(--canvas);
  color:var(--ink);
  font-family:"BIZ UDPGothic","Hiragino Sans","Yu Gothic",sans-serif;
  font-size:15px;
  line-height:1.7;
  min-height:100vh;
}
a{color:var(--blue);text-decoration:none;}
a:hover{text-decoration:underline;}
.mono{font-family:"Space Mono",ui-monospace,monospace;}

/* ---------- app shell (sidebar layout) ---------- */

body.app{display:flex;align-items:flex-start;}

.sidebar{
  width:236px;flex-shrink:0;background:var(--navy);color:#fff;
  height:100vh;position:sticky;top:0;overflow-y:auto;
  display:flex;flex-direction:column;z-index:30;
}
.sidebar-brand{display:flex;align-items:baseline;gap:8px;padding:20px 20px 16px;font-weight:700;font-size:18px;color:#fff;}
.sidebar-brand small{font-family:"Space Mono",monospace;font-size:11px;color:#9fb3d9;font-weight:400;}
.sidebar-nav{flex:1;padding:4px 12px;}
.sidebar-group{margin-top:18px;}
.sidebar-group:first-child{margin-top:0;}
.sidebar-group-label{font-family:"Space Mono",monospace;font-size:10.5px;letter-spacing:.08em;color:#6f83aa;padding:0 10px 6px;text-transform:uppercase;}
.sidebar-nav a{
  display:block;color:#c8d4ea;padding:9px 12px;border-radius:8px;font-size:14px;font-weight:500;
  margin-bottom:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.sidebar-nav a:hover{background:rgba(255,255,255,.08);text-decoration:none;color:#fff;}
.sidebar-nav a.active{background:var(--blue);color:#fff;}
.sidebar-user{padding:14px 20px;border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:#9fb3d9;}
.sidebar-user .name{color:#fff;font-weight:600;display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.sidebar-user .row{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:6px;}
.sidebar-user button.link{background:none;border:0;color:#9fb3d9;font-size:12.5px;cursor:pointer;padding:0;}
.sidebar-user button.link:hover{color:#fff;}

.main-col{flex:1;min-width:0;}

.mobile-topbar{
  display:none;align-items:center;gap:12px;padding:12px 16px;background:var(--navy);color:#fff;
  position:sticky;top:0;z-index:25;
}
.mobile-topbar .brand{font-weight:700;font-size:16px;flex:1;}
.mobile-topbar button.menu-btn{
  background:rgba(255,255,255,.1);border:0;color:#fff;width:36px;height:36px;border-radius:8px;
  font-size:18px;cursor:pointer;flex-shrink:0;
}
.sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(10,18,38,.5);z-index:29;}

@media (max-width:900px){
  .sidebar{position:fixed;top:0;left:0;transform:translateX(-100%);transition:transform .2s ease;width:260px;box-shadow:0 0 40px rgba(0,0,0,.3);}
  .sidebar.open{transform:translateX(0);}
  .mobile-topbar{display:flex;}
  .sidebar-overlay.show{display:block;}
}

.shell{max-width:1080px;margin:0 auto;padding:32px 24px 80px;}
.shell.wide{max-width:1280px;}
.shell h1{font-size:24px;margin:0 0 4px;letter-spacing:-.01em;}
.shell .sub{color:var(--ink-soft);font-size:14px;margin:0 0 28px;}

.page-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:24px;}

/* ---------- cards / surfaces ---------- */

.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.card-pad{padding:24px;}

.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:32px;}
@media (max-width:760px){.stat-grid{grid-template-columns:repeat(2,1fr);}}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow);min-width:0;}
.stat .label{font-size:12px;color:var(--ink-faint);font-family:"Space Mono",monospace;letter-spacing:.03em;}
.stat .value{font-size:28px;font-weight:700;margin-top:6px;font-family:"Space Mono",monospace;}

/* ---------- buttons ---------- */

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:10px 18px;border-radius:8px;font-size:14px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:filter .15s;
}
.btn:hover{text-decoration:none;filter:brightness(1.08);}
.btn-primary{background:var(--navy);color:#fff;}
.btn-outline{background:transparent;border-color:var(--line);color:var(--ink);}
.btn-danger{background:transparent;border-color:var(--red);color:var(--red);}
.btn-sm{padding:6px 12px;font-size:13px;}
.btn:disabled{opacity:.5;cursor:not-allowed;}

/* ---------- forms ---------- */

.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink-soft);margin-bottom:6px;}
.field input,.field select,.field textarea{
  width:100%;padding:10px 12px;border-radius:8px;border:1px solid var(--line);
  background:var(--surface);color:var(--ink);font-size:14px;font-family:inherit;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:2px solid var(--blue);outline-offset:0;border-color:var(--blue);
}
.field textarea{resize:vertical;min-height:70px;}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
@media (max-width:600px){.field-row{grid-template-columns:1fr;}}

.form-error{
  background:#fef2f2;border:1px solid #fecaca;color:var(--red);
  padding:10px 14px;border-radius:8px;font-size:13.5px;margin-bottom:16px;display:none;
}
:root:not([data-theme="light"]) .form-error{background:#2a1416;border-color:#5c2328;}
.form-error.show{display:block;}

/* ---------- tables ---------- */

.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow);}
table{width:100%;border-collapse:collapse;font-size:13.5px;min-width:560px;}
thead th{
  text-align:left;padding:12px 16px;font-size:11.5px;letter-spacing:.04em;
  color:var(--ink-faint);font-family:"Space Mono",monospace;font-weight:500;
  border-bottom:1px solid var(--line);white-space:nowrap;
}
tbody td{padding:13px 16px;border-bottom:1px solid var(--line);vertical-align:top;}
tbody tr:last-child td{border-bottom:none;}
tbody tr:hover{background:var(--blue-soft);}
.row-actions{display:flex;gap:6px;justify-content:flex-end;white-space:nowrap;}
.empty-row td{text-align:center;color:var(--ink-faint);padding:36px 16px;}

@media (max-width:640px){
  .col-hide-mobile{display:none;}
  table{min-width:0;}
}

/* ---------- pills / status ---------- */

.pill{display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600;}
.pill-blue{background:var(--blue-soft);color:var(--blue);}
.pill-owner{background:#fef3c7;color:#92400e;}
.pill-admin{background:var(--blue-soft);color:var(--blue);}
.pill-staff{background:var(--line);color:var(--ink-soft);}
:root:not([data-theme="light"]) .pill-owner{background:#3a2a0e;color:#fbbf24;}

.status-planning{color:var(--ink-faint);}
.status-active{color:var(--green);}
.status-done{color:var(--blue);}
.status-hold{color:var(--amber);}

/* ---------- modal ---------- */

.modal-overlay{
  position:fixed;inset:0;background:rgba(10,18,38,.5);display:none;
  align-items:center;justify-content:center;padding:20px;z-index:50;
}
.modal-overlay.show{display:flex;}
.modal{background:var(--surface);border-radius:var(--radius);max-width:560px;width:100%;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow);}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid var(--line);}
.modal-head h2{font-size:17px;margin:0;}
.modal-body{padding:24px;}
.modal-close{background:none;border:0;font-size:20px;color:var(--ink-faint);cursor:pointer;line-height:1;}
.modal-foot{display:flex;justify-content:flex-end;gap:10px;padding:16px 24px;border-top:1px solid var(--line);}

/* ---------- auth pages ---------- */

.auth-shell{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--navy);padding:20px;}
.auth-card{background:var(--surface);border-radius:14px;max-width:420px;width:100%;padding:36px 32px;box-shadow:0 20px 60px rgba(0,0,0,.3);}
.auth-brand{display:flex;align-items:baseline;gap:8px;margin-bottom:6px;}
.auth-brand .name{font-size:22px;font-weight:700;letter-spacing:.01em;}
.auth-brand .jp{font-size:14px;color:var(--ink-faint);}
.auth-card .tagline{color:var(--ink-soft);font-size:13.5px;margin:0 0 26px;}
.auth-card .switch{margin-top:20px;font-size:13.5px;color:var(--ink-soft);text-align:center;}
.auth-card .btn{width:100%;padding:12px;font-size:14.5px;}

.free-badge{
  display:inline-flex;align-items:center;gap:6px;font-family:"Space Mono",monospace;
  font-size:11px;letter-spacing:.05em;color:var(--blue);background:var(--blue-soft);
  padding:4px 10px;border-radius:999px;margin-bottom:18px;
}

/* ---------- landing ---------- */

.landing-hero{background:var(--navy);color:#fff;padding:100px 24px 90px;text-align:center;}
.landing-hero h1{font-size:40px;margin:0 0 16px;letter-spacing:-.01em;}
.landing-hero p{color:#c8d4ea;max-width:520px;margin:0 auto 32px;font-size:15.5px;}
.landing-hero .cta-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;}
.landing-hero .btn-primary{background:#fff;color:var(--navy);}
.landing-hero .btn-outline{color:#fff;border-color:rgba(255,255,255,.3);}
.landing-body{max-width:760px;margin:0 auto;padding:60px 24px;}
.landing-body h2{font-size:22px;}
.feature-list{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:24px;}
@media (max-width:700px){.feature-list{grid-template-columns:1fr;}}
.feature-list .item{padding:20px;border:1px solid var(--line);border-radius:10px;background:var(--surface);}
.feature-list .item h3{font-size:14.5px;margin:0 0 6px;}
.feature-list .item p{font-size:13px;color:var(--ink-soft);margin:0;}

/* ---------- utility ---------- */

.flex{display:flex;}
.gap-8{gap:8px;}
.text-faint{color:var(--ink-faint);font-size:13px;}
.hidden{display:none !important;}
.toast{
  position:fixed;bottom:24px;left:50%;transform:translateX(-50%);
  background:var(--navy);color:#fff;padding:12px 20px;border-radius:8px;
  font-size:13.5px;box-shadow:var(--shadow);z-index:100;opacity:0;pointer-events:none;
  transition:opacity .2s, transform .2s;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(-6px);}
.toast.error{background:var(--red);}

/* ---------- document status pills ---------- */

.pill-draft{background:var(--line);color:var(--ink-soft);}
.pill-sent{background:var(--blue-soft);color:var(--blue);}
.pill-accepted,.pill-paid,.pill-received,.pill-ready{background:#dcfce7;color:var(--green);}
.pill-rejected,.pill-overdue{background:#fee2e2;color:var(--red);}
.pill-unpaid,.pill-ordered{background:#fef3c7;color:var(--amber);}
:root:not([data-theme="light"]) .pill-accepted,:root:not([data-theme="light"]) .pill-paid,
:root:not([data-theme="light"]) .pill-received,:root:not([data-theme="light"]) .pill-ready{background:#123420;color:#4ade80;}
:root:not([data-theme="light"]) .pill-rejected,:root:not([data-theme="light"]) .pill-overdue{background:#3a1518;color:#f87171;}
:root:not([data-theme="light"]) .pill-unpaid,:root:not([data-theme="light"]) .pill-ordered{background:#3a2a0e;color:#fbbf24;}

/* ---------- document editor (quotes / invoices / purchase orders) ---------- */

.doc-head-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:24px;}
@media (max-width:760px){.doc-head-grid{grid-template-columns:1fr;}}

.items-table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);}
table.items-table{width:100%;border-collapse:collapse;min-width:680px;font-size:13.5px;}
.items-table thead th{
  text-align:left;padding:10px 12px;font-size:11px;color:var(--ink-faint);
  font-family:"Space Mono",monospace;border-bottom:1px solid var(--line);white-space:nowrap;
}
.items-table tbody td{padding:8px 12px;border-bottom:1px solid var(--line);vertical-align:top;}
.items-table tbody tr:last-child td{border-bottom:none;}
.items-table input{width:100%;padding:7px 9px;border:1px solid var(--line);border-radius:6px;background:var(--surface);color:var(--ink);font-size:13.5px;}
.items-table input:focus{outline:2px solid var(--blue);border-color:var(--blue);}
.items-table .col-qty,.items-table .col-price{width:100px;}
.items-table .col-unit{width:70px;}
.items-table .col-amount{width:120px;text-align:right;font-family:"Space Mono",monospace;white-space:nowrap;}
.items-table .col-del{width:36px;text-align:center;}
.items-table .row-del-btn{background:none;border:0;color:var(--ink-faint);cursor:pointer;font-size:16px;padding:4px;}
.items-table .row-del-btn:hover{color:var(--red);}

.items-toolbar{padding:10px 12px;border-top:1px solid var(--line);}

.items-scroll-hint{display:none;font-size:12px;color:var(--ink-faint);font-family:"Space Mono",monospace;letter-spacing:.03em;margin:6px 2px 0;}
@media (max-width:760px){.items-scroll-hint{display:block;}}

.doc-totals{display:flex;justify-content:flex-end;margin-top:18px;}
.doc-totals table{border-collapse:collapse;font-family:"Space Mono",monospace;font-size:14px;}
.doc-totals td{padding:6px 14px;text-align:right;}
.doc-totals td:first-child{color:var(--ink-soft);font-family:inherit;font-size:13px;}
.doc-totals tr.total-row td{font-size:17px;font-weight:700;border-top:1px solid var(--line);padding-top:12px;}

.doc-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:28px;flex-wrap:wrap;}

/* ---------- printable document layout ---------- */

.print-page{max-width:760px;margin:0 auto;padding:48px 40px;background:#fff;color:#111;}
.print-only-bar{display:flex;justify-content:center;gap:12px;padding:16px;background:var(--canvas);}
.print-head{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:32px;gap:20px;}
.print-head h1{font-size:26px;margin:0;letter-spacing:.05em;}
.print-head .doc-meta{text-align:right;font-size:13px;color:#444;}
.print-head .doc-meta .no{font-family:"Space Mono",monospace;font-size:14px;color:#111;font-weight:700;}
.print-parties{display:flex;justify-content:space-between;gap:24px;margin-bottom:28px;}
.print-parties .to{font-size:16px;font-weight:700;border-bottom:2px solid #111;padding-bottom:8px;min-width:240px;}
.print-parties .from{font-size:12.5px;color:#333;text-align:right;line-height:1.7;}
.print-total-banner{background:#f2f4f8;border:1px solid #d8dee8;border-radius:8px;padding:16px 20px;margin-bottom:28px;display:flex;justify-content:space-between;align-items:center;}
.print-total-banner .label{font-size:13px;color:#444;}
.print-total-banner .amount{font-family:"Space Mono",monospace;font-size:26px;font-weight:700;}
table.print-items{width:100%;border-collapse:collapse;font-size:13px;margin-bottom:24px;}
table.print-items th{text-align:left;padding:8px 10px;border-bottom:2px solid #111;font-size:11.5px;color:#333;}
table.print-items td{padding:8px 10px;border-bottom:1px solid #ddd;}
table.print-items td.num{text-align:right;font-family:"Space Mono",monospace;}
.print-totals{display:flex;justify-content:flex-end;}
.print-totals table{border-collapse:collapse;font-family:"Space Mono",monospace;font-size:13.5px;}
.print-totals td{padding:5px 12px;text-align:right;}
.print-totals tr.total td{font-size:16px;font-weight:700;border-top:1px solid #111;padding-top:10px;}
.print-notes{margin-top:32px;font-size:12.5px;color:#333;white-space:pre-wrap;}
.print-fax-body{white-space:pre-wrap;font-size:14.5px;line-height:1.9;margin:24px 0;}
.print-fax-recipients{font-size:12.5px;color:#333;margin-bottom:20px;}

@media print{
  body{background:#fff;}
  .sidebar,.mobile-topbar,.print-only-bar,.sidebar-overlay{display:none !important;}
  .main-col{margin:0 !important;}
  .print-page{padding:0;max-width:none;}
}