:root{
  /* MERCHANT TOOLS warm theme: navy + orange + cream */
  --navy:#23314D; --navy-d:#1a2540; --orange:#D85A30; --orange-d:#c44e28;
  --ink:#23314D; --slate:#8c7d68;
  --line:#EADCC6; --line-s:#E7D6BE; --bg:#F7EFE2; --soft:#FBF6EC; --card:#FFFDF9; --peach:#FBEAD9;
}
*{box-sizing:border-box}
body{margin:0;font-family:"Hiragino Kaku Gothic ProN","Yu Gothic",system-ui,sans-serif;color:var(--ink);background:var(--bg)}
a{color:inherit;text-decoration:none}
.hidden{display:none!important}

/* login (MERCHANT TOOLS brand) */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:16px;background:var(--bg)}
.mtl-card{background:#FFFDF9;border:1px solid #E7D6BE;border-radius:16px;box-shadow:0 14px 40px rgba(216,90,48,.10);width:100%;max-width:380px;padding:2.4rem 1.8rem 2rem;text-align:center}
.mtl-brand{display:flex;align-items:center;justify-content:center;gap:9px;margin-bottom:1.6rem}
.mtl-mark{width:28px;height:28px;border-radius:7px;background:#D85A30;display:inline-flex;align-items:center;justify-content:center;color:#fff}
.mtl-mark svg{width:16px;height:16px}
.mtl-brandname{font-size:16px;font-weight:600;letter-spacing:.14em;color:#23314D}
.mtl-icon{width:54px;height:54px;border-radius:14px;background:#FBEAD9;color:#D85A30;display:inline-flex;align-items:center;justify-content:center;margin-bottom:13px}
.mtl-icon svg{width:27px;height:27px}
.mtl-name{font-size:18px;font-weight:600;color:#23314D}
.mtl-sub{font-size:12px;letter-spacing:.06em;color:#A6764F;margin-top:3px;margin-bottom:1.5rem}
.mtl-card form{display:flex;flex-direction:column;gap:11px}
.mtl-input{width:100%;height:42px;text-align:center;font-size:15px;background:#fff;border:1px solid #E0CBAC;border-radius:10px;color:#23314D;outline:none;font-family:inherit}
.mtl-input:focus{border-color:#D85A30;box-shadow:0 0 0 3px rgba(216,90,48,.15)}
.mtl-btn{width:100%;height:42px;border:none;border-radius:10px;background:#23314D;color:#fff;font-size:15px;font-weight:600;letter-spacing:.04em;cursor:pointer;font-family:inherit;transition:opacity .15s,transform .08s}
.mtl-btn:hover{opacity:.92}
.mtl-btn:active{transform:scale(.98)}
.mtl-err{color:#D85A30;font-size:12px;min-height:16px;font-weight:600;margin:0}
.login-card{background:var(--card);border:1px solid var(--line-s);border-radius:16px;box-shadow:0 18px 46px rgba(35,49,77,.16);width:100%;max-width:400px;overflow:hidden}
.login-head{background:var(--navy);color:#fff;padding:22px 24px;font-size:19px;font-weight:700;display:flex;align-items:center;gap:8px}
.login-body{padding:26px}
.login-body p.lead{font-size:13px;color:var(--slate);margin:0 0 16px}

/* layout */
.layout{display:flex;min-height:100vh}
.sidebar{width:248px;background:var(--card);border-right:1px solid var(--line);display:flex;flex-direction:column;flex-shrink:0}
.sb-head{padding:18px 16px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:10px}
.sb-icon{width:38px;height:38px;border-radius:10px;background:var(--orange);display:flex;align-items:center;justify-content:center;font-size:18px;box-shadow:0 4px 12px rgba(216,90,48,.28)}
.sb-head h2{font-size:16px;margin:0;color:var(--navy)}
.sb-head p{font-size:11px;color:var(--slate);margin:0}
.sb-nav{padding:12px 8px;flex:1}
.sb-label{font-size:11px;font-weight:600;color:#b3a489;text-transform:uppercase;padding:8px 12px}
.nav-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:9px;font-size:14px;font-weight:600;color:var(--navy);cursor:pointer;margin-bottom:3px;border:none;background:none;width:100%;text-align:left;font-family:inherit}
.nav-item:hover{background:var(--peach);color:var(--orange-d)}
.nav-item.active{background:var(--peach);color:var(--orange-d)}
.sb-foot{padding:12px 8px;border-top:1px solid var(--line)}
.nav-item.logout:hover{background:#fbeceb;color:#c0392b}

.main{flex:1;overflow:auto;background:var(--bg)}
.page{max-width:1100px;margin:0 auto;padding:32px 28px}
.page-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;flex-wrap:wrap;margin-bottom:24px}
.page-head h1{font-size:26px;margin:0 0 4px;display:flex;align-items:center;gap:8px;color:var(--navy)}
.page-head .sub{color:var(--slate);font-size:14px}
.head-actions{display:flex;gap:10px}

/* buttons */
.btn{padding:10px 18px;border-radius:9px;font-size:14px;font-weight:600;cursor:pointer;border:1px solid transparent;font-family:inherit;display:inline-flex;align-items:center;gap:7px;transition:background .15s,opacity .15s}
.btn-primary{background:var(--navy);color:#fff}
.btn-primary:hover{background:var(--navy-d)}
.btn-primary:disabled{opacity:.6;cursor:default}
.btn-accent{background:var(--orange);color:#fff}
.btn-accent:hover{background:var(--orange-d)}
.btn-outline{background:var(--card);border-color:var(--line-s);color:var(--navy)}
.btn-outline:hover{background:var(--soft)}
.btn-danger{background:#fff;border-color:#f0c9c4;color:#c0392b}
.btn-danger:hover{background:#fbeceb}
.btn-sm{padding:7px 13px;font-size:13px}

/* stats */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:24px}
.stat{background:var(--card);border:1px solid var(--line-s);border-radius:14px;padding:18px 20px;display:flex;justify-content:space-between;align-items:center;box-shadow:0 3px 10px rgba(35,49,77,.04)}
.stat .label{font-size:13px;color:var(--slate)}
.stat .value{font-size:30px;font-weight:800;margin-top:4px;color:var(--navy)}
.stat .ico{font-size:22px;opacity:.55}

/* card */
.panel{background:var(--card);border:1px solid var(--line-s);border-radius:16px;padding:24px;box-shadow:0 3px 10px rgba(35,49,77,.04)}
.panel h2{font-size:18px;margin:0 0 16px;color:var(--navy)}

/* alert */
.alert{background:#FCEEDD;border:1px solid #F0C9A8;border-radius:12px;padding:18px 20px;color:#9A4A22;display:flex;gap:12px;align-items:flex-start;margin-bottom:20px}
.alert .ico{font-size:20px}
.alert h3{margin:0 0 4px;font-size:15px;color:var(--orange-d)}
.alert p{margin:0;font-size:13.5px;line-height:1.6}

/* form */
.form-section{margin-bottom:22px}
.form-section h3{font-size:15px;margin:0 0 2px;color:var(--navy)}
.form-section .desc{font-size:13px;color:var(--slate);margin:0 0 14px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.grid3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--navy);margin-bottom:6px}
.field .req{color:var(--orange-d)}
.field input,.field select,.field textarea{width:100%;padding:11px 13px;border:1px solid var(--line-s);border-radius:9px;font-size:14px;font-family:inherit;outline:none;background:#fff;color:var(--ink)}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--orange);box-shadow:0 0 0 3px rgba(216,90,48,.15)}
.field textarea{resize:vertical;min-height:84px}
.field .note{font-size:12px;color:var(--slate);margin-top:6px}
input.nospin::-webkit-outer-spin-button,input.nospin::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
input.nospin{-moz-appearance:textfield}
.img-row{display:flex;align-items:center;gap:14px}
.img-prev{width:120px;height:64px;border:1px solid var(--line);border-radius:9px;background:var(--soft);display:flex;align-items:center;justify-content:center;overflow:hidden;flex-shrink:0}
.img-prev img{max-width:100%;max-height:100%;object-fit:contain}
.form-foot{display:flex;justify-content:flex-end;gap:10px;margin-top:8px}

/* table */
table{width:100%;border-collapse:collapse;font-size:14px}
th{text-align:left;color:var(--slate);font-weight:600;font-size:12px;padding:10px 12px;border-bottom:2px solid var(--line)}
td{padding:12px;border-bottom:1px solid var(--line)}
tr:last-child td{border-bottom:none}
.empty{text-align:center;color:var(--slate);padding:40px 0}

.back-link{display:inline-flex;align-items:center;gap:6px;color:var(--slate);font-size:14px;cursor:pointer;margin-bottom:18px;background:none;border:none;font-family:inherit}
.back-link:hover{color:var(--navy)}

.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--navy);color:#fff;padding:11px 20px;border-radius:10px;font-size:14px;box-shadow:0 8px 24px rgba(35,49,77,.28);opacity:0;transition:.25s;z-index:50}
.toast.show{opacity:1}
.form-err{color:var(--orange-d);font-size:13px;min-height:18px}

@media (max-width:820px){
  .grid2,.grid3,.stats{grid-template-columns:1fr}
  .sidebar{width:auto;position:static}
  .layout{flex-direction:column}
  .sb-nav{display:flex;flex-wrap:wrap;gap:4px}
}

/* items editor */
.items-editor{border:1px solid var(--line-s);border-radius:10px;overflow:hidden}
.items-editor table{width:100%;border-collapse:collapse;font-size:13px}
.items-editor th{background:var(--soft);padding:9px 10px;font-size:12px;color:var(--slate);border-bottom:1px solid var(--line)}
.items-editor td{padding:6px 8px;border-bottom:1px solid var(--line)}
.items-editor input{width:100%;padding:8px 9px;border:1px solid var(--line-s);border-radius:7px;font-size:13px;font-family:inherit;outline:none}
.items-editor input:focus{border-color:var(--orange);box-shadow:0 0 0 2px rgba(216,90,48,.15)}
.items-editor input.num{text-align:right}
.items-editor td.amount-cell{text-align:right;font-variant-numeric:tabular-nums;color:var(--navy);white-space:nowrap}
.items-editor .col-no{width:38px;text-align:center;color:var(--slate)}
.items-editor .col-del{width:42px;text-align:center}
.icon-btn{background:none;border:none;cursor:pointer;font-size:15px;color:#b3a489;padding:4px}
.icon-btn:hover{color:var(--orange-d)}
.items-foot{padding:10px;background:var(--soft)}

.amount-summary{display:flex;flex-direction:column;gap:8px;align-items:flex-end;margin-top:16px;font-size:14px}
.amount-summary .row{display:flex;gap:18px;align-items:baseline}
.amount-summary .row .lbl{color:var(--slate)}
.amount-summary .row .val{min-width:130px;text-align:right;font-variant-numeric:tabular-nums;font-weight:600}
.amount-summary .row.total .val{font-size:22px;font-weight:800;color:var(--orange-d)}

.doc-toolbar{display:flex;gap:10px;justify-content:flex-end;flex-wrap:wrap;margin-bottom:18px}
.sheet-frame{background:#fff;border:1px solid var(--line-s);border-radius:12px;box-shadow:0 12px 34px rgba(35,49,77,.10);padding:0;overflow:auto}

.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px}
.filters select,.filters input{padding:9px 12px;border:1px solid var(--line-s);border-radius:9px;font-size:14px;font-family:inherit;background:#fff;color:var(--ink)}
.filters select:focus,.filters input:focus{outline:none;border-color:var(--orange);box-shadow:0 0 0 3px rgba(216,90,48,.13)}
.tag{display:inline-block;font-size:11px;font-weight:700;padding:2px 8px;border-radius:999px;background:var(--peach);color:var(--orange-d)}
.tag.indiv{background:#eaf3ec;color:#3f7d52}
.row-link{cursor:pointer}
.row-link:hover{background:var(--soft)}

.client-list{list-style:none;margin:0;padding:0}
.client-row{display:flex;align-items:center;gap:12px;padding:13px 14px;border:1px solid var(--line-s);border-radius:11px;background:var(--card);margin-bottom:10px}
.client-row.dragging{opacity:.5}
.client-row.drag-over{border-color:var(--orange);box-shadow:0 0 0 2px rgba(216,90,48,.18)}
.client-row .grip{cursor:grab;color:#b3a489;font-size:18px;user-select:none}
.client-row .grip:active{cursor:grabbing}
.client-row .c-name{font-weight:600;font-size:15px;color:var(--navy)}
.client-row .c-actions{margin-left:auto;display:flex;gap:8px}