:root{
  --teal-900:#0B3D3A;
  --teal-800:#0E4A45;
  --teal-700:#0F5C56;
  --teal-500:#2E8B84;
  --mint-200:#CFEFE9;
  --mint-100:#EAF7F4;
  --bg:#F4F9F8;
  --surface:#FFFFFF;
  --ink:#123330;
  --muted:#5C7A76;
  --line:#DEEBE8;
  --coral:#E4572E;
  --coral-bg:#FDEBE5;
  --amber:#B9790A;
  --amber-bg:#FBF0DA;
  --good:#227A57;
  --good-bg:#E4F4EC;
  --radius:14px;
  --shadow:0 1px 2px rgba(11,61,58,.06), 0 8px 24px -12px rgba(11,61,58,.18);
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;height:100%;}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:'Segoe UI',ui-sans-serif,-apple-system,BlinkMacSystemFont,'Helvetica Neue',Arial,sans-serif;
  font-size:14px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;}
.eyebrow{
  text-transform:uppercase;letter-spacing:.09em;font-size:11px;font-weight:700;color:var(--teal-500);
}
button{font-family:inherit;cursor:pointer;}
a{color:inherit;}
#app{display:flex;min-height:100vh;}

/* Sidebar */
.sidebar{
  width:232px;flex:none;background:var(--teal-900);color:#EAF7F4;
  display:flex;flex-direction:column;padding:20px 14px;position:sticky;top:0;height:100vh;
}
.brand{display:flex;align-items:center;gap:10px;padding:6px 8px 22px 8px;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;background:linear-gradient(155deg,var(--mint-200),var(--teal-500));
  display:flex;align-items:center;justify-content:center;font-size:19px;flex:none;
}
.brand-name{font-size:16px;font-weight:800;line-height:1.15;}
.brand-sub{font-size:10.5px;color:#9FCFC7;letter-spacing:.06em;text-transform:uppercase;}
.nav{display:flex;flex-direction:column;gap:2px;margin-top:6px;}
.nav-item{
  display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:10px;color:#BFE3DC;
  font-size:13.5px;font-weight:600;background:transparent;border:none;text-align:left;width:100%;
  transition:background .12s,color .12s;
}
.nav-item svg{flex:none;width:17px;height:17px;}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff;}
.nav-item.active{background:var(--mint-200);color:var(--teal-900);}
.sidebar-foot{margin-top:auto;padding:10px 8px;font-size:11px;color:#7FB2A9;line-height:1.5;}

/* Main */
.main{flex:1;min-width:0;display:flex;flex-direction:column;}
.topbar{
  background:var(--surface);border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;padding:16px 26px;position:sticky;top:0;z-index:20;
}
.topbar h2{font-size:19px;}
.topbar .sub{color:var(--muted);font-size:12.5px;margin-top:2px;}
.bell-wrap{position:relative;}
.bell-btn{
  background:var(--mint-100);border:1px solid var(--line);width:38px;height:38px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;position:relative;
}
.bell-dot{
  position:absolute;top:6px;right:6px;background:var(--coral);color:#fff;font-size:9.5px;font-weight:800;
  min-width:15px;height:15px;border-radius:8px;display:flex;align-items:center;justify-content:center;padding:0 3px;
}
.bell-drop{
  position:absolute;right:0;top:46px;width:320px;background:var(--surface);border:1px solid var(--line);
  border-radius:12px;box-shadow:var(--shadow);padding:10px;display:none;max-height:360px;overflow:auto;z-index:30;
}
.bell-drop.open{display:block;}
.bell-drop h4{font-size:12.5px;padding:6px 6px 4px;color:var(--muted);text-transform:uppercase;letter-spacing:.05em;}
.bell-row{padding:8px 8px;border-radius:8px;font-size:12.5px;display:flex;justify-content:space-between;gap:8px;}
.bell-row:hover{background:var(--mint-100);}

.content{padding:24px 26px 60px;flex:1;}

/* Cards & layout helpers */
.grid{display:grid;gap:16px;}
.stats-grid{grid-template-columns:repeat(4,1fr);}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 20px;box-shadow:var(--shadow);
}
.stat-card .stat-label{font-size:12px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.04em;}
.stat-card .stat-value{font-size:26px;font-weight:800;margin-top:6px;}
.stat-card .stat-tag{font-size:11.5px;margin-top:6px;font-weight:700;}
.two-col{display:grid;grid-template-columns:1.3fr 1fr;gap:16px;}
.section-title{display:flex;align-items:center;justify-content:space-between;margin:26px 0 12px;}
.section-title h3{font-size:15.5px;}

/* Buttons */
.btn{
  border-radius:9px;padding:9px 15px;font-size:13px;font-weight:700;border:1px solid transparent;
  display:inline-flex;align-items:center;gap:7px;
}
.btn-primary{background:var(--teal-700);color:#fff;}
.btn-primary:hover{background:var(--teal-800);}
.btn-outline{background:#fff;border-color:var(--line);color:var(--ink);}
.btn-outline:hover{border-color:var(--teal-500);}
.btn-danger{background:var(--coral-bg);color:var(--coral);}
.btn-sm{padding:6px 10px;font-size:12px;border-radius:7px;}
.btn-ghost{background:transparent;color:var(--teal-700);padding:6px 8px;}
.btn[disabled]{opacity:.45;cursor:not-allowed;}

/* Forms */
label{font-size:12px;font-weight:700;color:var(--muted);display:block;margin-bottom:5px;}
.field{margin-bottom:13px;}
.input,select,textarea{
  width:100%;padding:9px 11px;border-radius:9px;border:1px solid var(--line);font-size:13.5px;
  background:#fff;color:var(--ink);font-family:inherit;
}
.input:focus,select:focus,textarea:focus{outline:2px solid var(--teal-500);outline-offset:0;border-color:var(--teal-500);}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 14px;}
.form-grid.c3{grid-template-columns:1fr 1fr 1fr;}
.hint{font-size:11.5px;color:var(--muted);margin-top:4px;}

/* Table */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff;}
table{width:100%;border-collapse:collapse;font-size:13px;}
thead th{
  text-align:left;background:var(--mint-100);color:var(--teal-800);padding:10px 12px;font-size:11.5px;
  text-transform:uppercase;letter-spacing:.04em;font-weight:800;white-space:nowrap;border-bottom:1px solid var(--line);
}
tbody td{padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:middle;}
tbody tr:last-child td{border-bottom:none;}
tbody tr:hover{background:#FBFEFD;}
.right{text-align:right;}
.center{text-align:center;}

/* Badges */
.badge{display:inline-flex;align-items:center;gap:5px;padding:3px 9px;border-radius:999px;font-size:11px;font-weight:800;}
.badge.danger{background:var(--coral-bg);color:var(--coral);}
.badge.warning{background:var(--amber-bg);color:var(--amber);}
.badge.good{background:var(--good-bg);color:var(--good);}
.badge.neutral{background:var(--mint-100);color:var(--teal-700);}

.empty{padding:38px 20px;text-align:center;color:var(--muted);}
.empty .em-icon{font-size:30px;margin-bottom:8px;}

/* Modal */
.overlay{position:fixed;inset:0;background:rgba(10,30,28,.45);display:none;align-items:flex-start;justify-content:center;z-index:100;padding:5vh 16px;overflow:auto;}
.overlay.open{display:flex;}
.modal{background:#fff;border-radius:16px;width:100%;max-width:560px;box-shadow:var(--shadow);}
.modal.wide{max-width:820px;}
.modal-head{display:flex;justify-content:space-between;align-items:center;padding:18px 22px;border-bottom:1px solid var(--line);}
.modal-head h3{font-size:16px;}
.modal-body{padding:20px 22px;max-height:72vh;overflow:auto;}
.modal-foot{padding:16px 22px;border-top:1px solid var(--line);display:flex;justify-content:flex-end;gap:10px;}
.x-btn{background:var(--mint-100);border:none;width:30px;height:30px;border-radius:8px;font-size:15px;color:var(--teal-800);}

/* Billing specific */
.line-item-row{display:grid;grid-template-columns:2.2fr .8fr .9fr .7fr .9fr auto;gap:8px;align-items:end;margin-bottom:10px;}
.totals-box{margin-top:14px;border-top:2px dashed var(--line);padding-top:12px;}
.totals-row{display:flex;justify-content:space-between;padding:4px 0;font-size:13px;color:var(--muted);}
.totals-row.grand{font-size:17px;font-weight:800;color:var(--ink);border-top:1px solid var(--line);margin-top:6px;padding-top:10px;}
.toggle-group{display:flex;gap:8px;border:1px solid var(--line);border-radius:10px;padding:4px;background:#fff;width:fit-content;}
.toggle-opt{padding:7px 16px;border-radius:7px;font-size:12.5px;font-weight:700;color:var(--muted);border:none;background:transparent;}
.toggle-opt.active{background:var(--teal-700);color:#fff;}

.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:18px;}
.tab-btn{padding:10px 16px;font-size:13px;font-weight:700;color:var(--muted);background:transparent;border:none;border-bottom:2px solid transparent;}
.tab-btn.active{color:var(--teal-700);border-color:var(--teal-700);}

.search-bar{display:flex;gap:10px;margin-bottom:14px;}
.search-bar .input{max-width:320px;}

.toast-wrap{position:fixed;bottom:22px;right:22px;z-index:200;display:flex;flex-direction:column;gap:8px;}
.toast{background:var(--teal-900);color:#EAF7F4;padding:11px 16px;border-radius:10px;font-size:13px;font-weight:600;box-shadow:var(--shadow);animation:slidein .18s ease-out;}
@keyframes slidein{from{transform:translateY(8px);opacity:0;}to{transform:translateY(0);opacity:1;}}

.logo-preview{width:56px;height:56px;border-radius:10px;object-fit:cover;border:1px solid var(--line);background:var(--mint-100);}
.customer-detail-panel{display:none;}
.topbar-right{display:flex;align-items:center;gap:14px;}
.user-chip{display:flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;color:var(--teal-800);}
.user-chip .avatar{width:28px;height:28px;border-radius:50%;background:var(--mint-200);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;color:var(--teal-800);}
.user-menu{position:relative;}
.user-drop{position:absolute;right:0;top:40px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:6px;display:none;min-width:170px;z-index:30;}
.user-drop.open{display:block;}
.user-drop a{display:block;padding:8px 10px;border-radius:8px;font-size:12.5px;font-weight:600;color:var(--ink);text-decoration:none;}
.user-drop a:hover{background:var(--mint-100);}
.link-btn{background:none;border:none;color:var(--teal-700);font-weight:700;font-size:12.5px;padding:0;text-decoration:underline;}
.small-note{font-size:11.5px;color:var(--muted);}
@media(max-width:1000px){
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .two-col{grid-template-columns:1fr;}
  .form-grid,.form-grid.c3{grid-template-columns:1fr;}
  .sidebar{position:fixed;left:0;transform:translateX(-100%);transition:transform .2s;z-index:150;}
  .sidebar.open{transform:translateX(0);}
}