/* Kerryton PO Management — UI theme v4 (Dribbble-style sidebar) */
:root{
  --bg:#f4f5fa; --text:#171a2b; --muted:#6b7194; --border:#e7e9f2; --input-border:#d3d7e6;
  --card-bg:#ffffff; --accent:#6366f1; --accent-2:#8b5cf6; --link:#5457e5; --link-text:#ffffff;
  --link-hover:#4649d1; --secondary-bg:#565c7a; --danger:#e5484d; --danger-bg:#feebec; --danger-text:#9f1f24;
  --table-header-bg:#f5f6fb; --badge-bg:#e5e6fb; --badge-text:#4649d1;
  --sidebar-bg:linear-gradient(180deg,#191c33 0%,#12142a 100%); --sidebar-text:#c6c9e8;
  --shadow:0 1px 2px rgba(23,26,43,.05),0 6px 20px rgba(23,26,43,.06);
  --shadow-lift:0 6px 14px rgba(23,26,43,.1),0 14px 36px rgba(23,26,43,.1);
  --row-alt-bg:#f8f9fd; --chart-track:#ecedf7; --item-card-bg:#f8f9fd;
  --focus-ring:0 0 0 3px rgba(99,102,241,.2); --radius:16px; --radius-sm:10px;
}
[data-theme="dark"]{
  --bg:#0e1018; --text:#e4e6f4; --muted:#8e94b8; --border:#232741; --input-border:#333854;
  --card-bg:#161927; --accent:#818cf8; --accent-2:#a78bfa; --link:#8a8dff; --link-text:#0e1018;
  --link-hover:#a5a8ff; --secondary-bg:#3a4060; --danger:#ff6369; --danger-bg:#3a1d1f; --danger-text:#ffb4b6;
  --table-header-bg:#1b1f33; --badge-bg:#272b4d; --badge-text:#a5a8ff;
  --sidebar-bg:linear-gradient(180deg,#0b0d1a 0%,#080a14 100%); --sidebar-text:#9ba0c9;
  --shadow:0 1px 3px rgba(0,0,0,.4),0 8px 24px rgba(0,0,0,.3);
  --shadow-lift:0 8px 18px rgba(0,0,0,.45),0 16px 40px rgba(0,0,0,.4);
  --row-alt-bg:#131624; --chart-track:#1e2238; --item-card-bg:#131624;
  --focus-ring:0 0 0 3px rgba(129,140,248,.28);
}
*{box-sizing:border-box}
:root{font-family:"Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif;color:var(--text);background:var(--bg)}
body{margin:0;background:var(--bg);color:var(--text);font-size:16px;line-height:1.6;
  transition:background .25s ease,color .25s ease}

/* ---------- Sidebar layout ---------- */
.layout{display:flex;min-height:100vh}
.sidebar{width:232px;flex-shrink:0;background:var(--sidebar-bg);color:var(--sidebar-text);
  display:flex;flex-direction:column;position:sticky;top:0;height:100vh;padding:18px 12px;overflow-y:auto}
.brand{display:flex;gap:11px;align-items:center;padding:6px 10px 18px;border-bottom:1px solid rgba(255,255,255,.08);margin-bottom:14px}
.brand-logo{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--accent),var(--accent-2));
  display:flex;align-items:center;justify-content:center;font-size:18px;color:#fff;box-shadow:0 4px 12px rgba(99,102,241,.4)}
.brand strong{display:block;color:#fff;font-size:15px;letter-spacing:.2px}
.brand span{font-size:11.5px;opacity:.7}
.sidebar nav{display:flex;flex-direction:column;gap:3px;flex:1}
.sidebar nav a{color:var(--sidebar-text);text-decoration:none;padding:9px 13px;border-radius:10px;
  font-size:15px;font-weight:500;transition:all .15s ease}
.sidebar nav a:hover{background:rgba(255,255,255,.07);color:#fff}
.sidebar nav a.active{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;
  box-shadow:0 4px 12px rgba(99,102,241,.35);font-weight:600}
.sidebar-foot{border-top:1px solid rgba(255,255,255,.08);padding-top:12px;display:flex;flex-direction:column;gap:3px}
.sidebar-foot a{color:var(--sidebar-text);text-decoration:none;padding:8px 13px;border-radius:10px;font-size:14.5px}
.sidebar-foot a:hover{background:rgba(255,255,255,.07);color:#fff}
.theme-toggle{background:transparent;border:1px solid rgba(255,255,255,.2);color:var(--sidebar-text);
  border-radius:10px;padding:8px 13px;cursor:pointer;font-weight:600;font-size:12.5px;text-align:left;margin-top:4px}
.theme-toggle:hover{background:rgba(255,255,255,.07);color:#fff}
.content{flex:1;min-width:0}
main{max-width:1180px;margin:26px auto;padding:0 26px}
main.anon{max-width:1180px;margin:26px auto;padding:0 26px}
h1{margin:0 0 6px;font-size:28px;font-weight:700;letter-spacing:-.02em}
h2{margin:26px 0 12px;font-size:21px;font-weight:700;letter-spacing:-.01em}
h3{margin:0 0 10px;font-size:17px}
.title-row{display:flex;justify-content:space-between;align-items:center;gap:14px;margin-bottom:20px}
.title-row div{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.title-row p{margin:2px 0 0;color:var(--muted)}

/* ---------- Buttons ---------- */
.button,button{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;border:0;border-radius:11px;
  padding:9px 16px;text-decoration:none;cursor:pointer;font-weight:600;font-size:15px;
  display:inline-block;line-height:1.35;box-shadow:0 3px 10px rgba(99,102,241,.28);
  transition:filter .15s ease,transform .1s ease,box-shadow .15s ease}
.button:hover,button:hover{filter:brightness(1.08);box-shadow:0 5px 16px rgba(99,102,241,.4)}
.button:active,button:active{transform:translateY(1px)}
.secondary{background:var(--secondary-bg);color:#fff;margin-right:6px}
.secondary:hover{background:#5b6b80}
.danger-btn{background:var(--danger);color:#fff;border:0;border-radius:9px;padding:9px 15px;
  cursor:pointer;font-weight:600;font-size:15px;transition:filter .15s ease}
.danger-btn:hover{filter:brightness(1.1)}

/* ---------- Cards & panels ---------- */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:22px 0}
.card,.panel,.login-card{background:var(--card-bg);border:1px solid var(--border);
  border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);
  transition:box-shadow .2s ease,transform .2s ease}
.card:hover{box-shadow:var(--shadow-lift);transform:translateY(-2px)}
.card span,.detail-grid span{display:block;color:var(--muted);font-size:13.5px;
  text-transform:uppercase;letter-spacing:.06em;margin-bottom:4px}
.card b{font-size:30px;letter-spacing:-.02em}
.danger b{color:var(--danger)}
details.panel summary{cursor:pointer;font-weight:600;color:var(--link)}
details.panel[open] summary{margin-bottom:10px}

/* ---------- Tables ---------- */
table{width:100%;border-collapse:collapse;background:var(--card-bg);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--border);margin-bottom:10px}
th,td{text-align:left;padding:11px 13px;border-bottom:1px solid var(--border);vertical-align:top}
th{background:var(--table-header-bg);font-size:13.5px;text-transform:uppercase;letter-spacing:.05em;
  color:var(--muted);font-weight:700}
tr:last-child td{border-bottom:0}
tbody tr,table tr{transition:background .12s ease}
table tr:hover td{background:var(--row-alt-bg)}
td a{color:var(--link);text-decoration:none;font-weight:600}
td a:hover{text-decoration:underline}

/* ---------- Badges & tags ---------- */
.badge{background:var(--badge-bg);color:var(--badge-text);padding:4px 10px;border-radius:99px;
  font-size:13px;font-weight:700;letter-spacing:.02em;display:inline-block;white-space:nowrap}

/* ---------- Forms ---------- */
.filters{display:flex;gap:10px;margin-bottom:16px}
.filters input{flex:1}
input,select,textarea{width:100%;padding:9px 11px;border:1.5px solid var(--input-border);
  border-radius:var(--radius-sm);background:var(--card-bg);color:var(--text);font-size:15.5px;
  font-family:inherit;transition:border-color .15s ease,box-shadow .15s ease}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--link);box-shadow:var(--focus-ring)}
input::placeholder{color:var(--muted);opacity:.75}
label{display:block;font-weight:600;margin-bottom:13px;font-size:14.5px;color:var(--text)}
label input,label select,label textarea{margin-top:5px;font-weight:400}
textarea{min-height:80px;resize:vertical}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.detail-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:18px 0}
.detail-grid div{background:var(--card-bg);border:1px solid var(--border);padding:14px 16px;
  border-radius:var(--radius-sm);box-shadow:var(--shadow)}
.detail-grid b{font-size:15px}

/* ---------- Line-item editors ---------- */
.item-card{background:var(--item-card-bg);border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:12px;margin-bottom:10px;transition:border-color .15s ease}
.item-card:hover{border-color:var(--input-border)}
.item-row{display:grid;grid-template-columns:60px 1fr 1.6fr 70px 70px 100px 130px 34px;gap:8px;margin-bottom:8px;align-items:center}
.item-row-1{display:grid;grid-template-columns:60px 1fr 1.8fr 1fr 34px;gap:8px;margin-bottom:6px;align-items:center}
.item-row-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(90px,1fr));gap:8px;margin-bottom:6px}
.item-row-3{display:grid;grid-template-columns:repeat(7,1fr);gap:8px}
.item-row-3 input{font-size:13.5px;padding:7px}
.item-row .remove,button.remove{background:var(--danger);padding:6px 10px;font-weight:700;line-height:1;border-radius:7px}

/* ---------- Misc ---------- */
.pagination{display:flex;gap:12px;justify-content:center;align-items:center;margin-top:18px}
.pagination a{background:var(--card-bg);border:1px solid var(--border);padding:8px 14px;
  border-radius:var(--radius-sm);text-decoration:none;color:var(--link);font-weight:600;box-shadow:var(--shadow)}
.pagination a:hover{box-shadow:var(--shadow-lift)}
.alert{background:var(--danger-bg);color:var(--danger-text);padding:12px 15px;border-radius:var(--radius-sm);
  margin-bottom:15px;border:1px solid color-mix(in srgb,var(--danger) 30%,transparent)}
.muted{color:var(--muted)}
.muted-row{opacity:.55}
.alert-row{background:var(--danger-bg)}
.alert-row:hover td{background:var(--danger-bg) !important}
.login-card{max-width:420px;margin:90px auto}
.login-card h1{text-align:center}
.activity{background:var(--card-bg);border:1px solid var(--border);padding:11px 14px;
  border-radius:var(--radius-sm);margin:0 0 8px}
.activity span{float:right;color:var(--muted);font-size:12px}

/* ---------- Charts ---------- */
.chart-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin:18px 0}
.chart-row{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.chart-label{width:140px;font-size:13px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chart-bar-track{flex:1;background:var(--chart-track);border-radius:6px;overflow:hidden;height:22px}
.chart-bar{background:var(--link);color:#fff;font-size:12px;padding:2px 8px;height:100%;border-radius:6px;
  white-space:nowrap;min-width:24px;transition:width .4s ease}
.chart-bar.status{background:#0891b2}.chart-bar.customer{background:#7c3aed}.chart-bar.supplier{background:#d97706}
.two-col{display:grid;grid-template-columns:1.3fr 1fr;gap:20px;margin-top:20px}

/* ---------- Tabs ---------- */
.tabs{display:flex;gap:8px;margin-bottom:14px}
.tabs a{padding:8px 15px;background:var(--card-bg);border:1px solid var(--border);border-radius:99px;
  text-decoration:none;color:var(--link);font-weight:600;font-size:15px;transition:all .15s ease}
.tabs a:hover{box-shadow:var(--shadow)}
.tabs a.active{background:var(--link);color:var(--link-text);border-color:var(--link)}

.vpo-items{margin-bottom:10px}
h4{margin:16px 0 8px;font-size:14px}

/* ---------- Scrollbars (webkit) ---------- */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:var(--input-border);border-radius:6px}
::-webkit-scrollbar-track{background:transparent}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .cards,.grid,.detail-grid,.chart-grid,.two-col{grid-template-columns:1fr}
  .item-row,.item-row-1,.item-row-2,.item-row-3{grid-template-columns:1fr}
  .title-row{flex-direction:column;align-items:flex-start;gap:12px}
  .layout{display:block}
  .sidebar{width:100%;height:auto;position:static;flex-direction:row;flex-wrap:wrap;align-items:center;gap:6px;padding:12px}
  .brand{border-bottom:0;padding:0 8px;margin-bottom:0}
  .sidebar nav{flex-direction:row;flex-wrap:wrap}
  .sidebar-foot{border-top:0;padding-top:0;flex-direction:row}
  .filters{display:block}
  .filters>*{margin-bottom:8px}
  main{margin-top:18px}
  table{display:block;overflow-x:auto;white-space:nowrap}
}