:root{
  --bg:#f4f6fb; --panel:#ffffff; --border:#e5e9f2; --text:#1e293b; --muted:#64748b;
  --primary:#4f46e5; --primary-dark:#4338ca; --primary-light:#eef2ff;
  --sidebar-bg:#171a2e; --sidebar-text:#c7cae0; --sidebar-active:#4f46e5;
  --green:#16a34a; --green-bg:#e9f9ef; --red:#dc2626; --red-bg:#fdeaea;
  --amber:#d97706; --amber-bg:#fef6e7; --blue:#2563eb; --blue-bg:#eaf1fe;
  --slate:#64748b; --slate-bg:#eef1f6; --purple:#9333ea; --purple-bg:#f4e9fc;
  --indigo:#4f46e5; --indigo-bg:#eef0fd; --teal:#0d9488; --teal-bg:#e6f7f5;
  --radius:10px; --shadow:0 1px 2px rgba(16,24,40,.06), 0 1px 3px rgba(16,24,40,.06);
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:14px;}
a{color:inherit;text-decoration:none}
.app-shell{display:flex;min-height:100vh}

/* Sidebar */
.sidebar{width:230px;background:var(--sidebar-bg);color:var(--sidebar-text);flex-shrink:0;display:flex;flex-direction:column;position:fixed;top:0;bottom:0;left:0;overflow-y:auto}
.sidebar-brand{padding:20px 20px 16px;font-size:18px;font-weight:700;color:#fff;display:flex;align-items:center;gap:8px;border-bottom:1px solid rgba(255,255,255,.08)}
.sidebar-brand .dot{width:10px;height:10px;background:#818cf8;border-radius:3px;display:inline-block}
.sidebar nav{padding:14px 10px;flex:1}
.sidebar .nav-link{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:8px;color:var(--sidebar-text);font-size:13.5px;font-weight:500;margin-bottom:2px}
.sidebar .nav-link:hover{background:rgba(255,255,255,.06);color:#fff}
.sidebar .nav-link.active{background:var(--sidebar-active);color:#fff}
.sidebar .nav-icon{width:18px;text-align:center;opacity:.9}
.sidebar-footer{padding:14px 16px;border-top:1px solid rgba(255,255,255,.08);font-size:12.5px}

/* Main */
.main{margin-left:230px;flex:1;display:flex;flex-direction:column;min-width:0}
.topbar{background:var(--panel);border-bottom:1px solid var(--border);padding:14px 28px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:10}
.topbar h1{font-size:19px;margin:0;font-weight:700}
.topbar .sub{color:var(--muted);font-size:13px;margin-top:2px}
.user-chip{display:flex;align-items:center;gap:10px}
.avatar{width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:13px;flex-shrink:0}
.avatar-sm{width:26px;height:26px;font-size:11px}
.content{padding:24px 28px;flex:1}

/* Cards */
.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.card-body{padding:20px}
.card-header{padding:16px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}
.card-header h3{margin:0;font-size:15px;font-weight:700}

/* KPI */
.kpi-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:22px}
.kpi{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow)}
.kpi .label{color:var(--muted);font-size:12.5px;font-weight:600;text-transform:uppercase;letter-spacing:.03em}
.kpi .value{font-size:26px;font-weight:700;margin-top:6px}
.kpi .delta{font-size:12.5px;margin-top:4px;font-weight:600}
.kpi .delta.up{color:var(--green)} .kpi .delta.down{color:var(--red)}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:6px;padding:9px 16px;border-radius:8px;font-size:13.5px;font-weight:600;border:1px solid transparent;cursor:pointer;background:var(--panel)}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark)}
.btn-outline{border-color:var(--border);color:var(--text);background:#fff}
.btn-outline:hover{background:#f8fafc}
.btn-sm{padding:6px 11px;font-size:12.5px}
.btn-danger{background:var(--red);color:#fff}
.btn-block{width:100%;justify-content:center}

/* Forms */
.form-group{margin-bottom:16px}
label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:#334155}
input[type=text],input[type=email],input[type=password],input[type=date],input[type=number],select,textarea{
  width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:8px;font-size:13.5px;font-family:inherit;background:#fff;color:var(--text)
}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}
textarea{resize:vertical;min-height:80px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-row-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px}
.hint{color:var(--muted);font-size:12px;margin-top:4px}

/* Badges */
.badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:20px;font-size:11.5px;font-weight:700;white-space:nowrap}
.badge-slate{background:var(--slate-bg);color:var(--slate)}
.badge-blue{background:var(--blue-bg);color:var(--blue)}
.badge-amber{background:var(--amber-bg);color:var(--amber)}
.badge-purple{background:var(--purple-bg);color:var(--purple)}
.badge-indigo{background:var(--indigo-bg);color:var(--indigo)}
.badge-teal{background:var(--teal-bg);color:var(--teal)}
.badge-green{background:var(--green-bg);color:var(--green)}
.badge-red{background:var(--red-bg);color:var(--red)}

/* Table */
table{width:100%;border-collapse:collapse}
th{text-align:left;font-size:11.5px;text-transform:uppercase;letter-spacing:.03em;color:var(--muted);font-weight:700;padding:10px 14px;border-bottom:1px solid var(--border)}
td{padding:13px 14px;border-bottom:1px solid var(--border);font-size:13.5px;vertical-align:middle}
tr:last-child td{border-bottom:none}
.table-wrap{overflow-x:auto}
.row-link:hover{background:#f8fafc;cursor:pointer}

/* Kanban */
.kanban{display:flex;gap:16px;overflow-x:auto;padding-bottom:10px;align-items:flex-start}
.kanban-col{background:#eef0f6;border-radius:12px;min-width:270px;max-width:270px;flex-shrink:0;display:flex;flex-direction:column;max-height:calc(100vh - 220px)}
.kanban-col-head{padding:12px 14px;font-weight:700;font-size:13px;display:flex;justify-content:space-between;align-items:center;color:#334155}
.kanban-col-body{padding:0 10px 10px;overflow-y:auto;flex:1}
.kanban-card{background:#fff;border-radius:9px;padding:12px 13px;margin-bottom:9px;box-shadow:0 1px 2px rgba(16,24,40,.08);cursor:pointer;border:1px solid transparent}
.kanban-card:hover{border-color:var(--primary)}
.kanban-card .ref{font-size:11px;color:var(--muted);font-weight:700;margin-bottom:4px}
.kanban-card .title{font-size:13px;font-weight:600;margin-bottom:8px;line-height:1.4}
.kanban-card .meta{display:flex;justify-content:space-between;align-items:center}
.kanban-card.overdue{border-left:3px solid var(--red)}
.count-chip{background:#dde1ec;color:#475569;border-radius:20px;padding:1px 8px;font-size:11.5px;font-weight:700}

/* Tabs */
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--border);margin-bottom:18px}
.tab{padding:10px 16px;font-size:13.5px;font-weight:600;color:var(--muted);border-bottom:2px solid transparent;cursor:pointer}
.tab.active{color:var(--primary);border-bottom-color:var(--primary)}

/* Misc */
.flex{display:flex} .items-center{align-items:center} .justify-between{justify-content:space-between}
.gap-2{gap:8px} .gap-3{gap:12px} .mb-3{margin-bottom:12px} .mb-4{margin-bottom:16px} .mt-3{margin-top:12px}
.text-muted{color:var(--muted)} .text-sm{font-size:12.5px} .fw-bold{font-weight:700}
.empty-state{text-align:center;padding:50px 20px;color:var(--muted)}
.divider{border:none;border-top:1px solid var(--border);margin:16px 0}

.timeline-item{display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--border)}
.timeline-item:last-child{border-bottom:none}
.timeline-bubble{flex:1;background:#f8fafc;border-radius:10px;padding:12px 14px}
.timeline-bubble.outgoing{background:var(--primary-light)}
.timeline-meta{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-bottom:6px}
.timeline-body{font-size:13.5px;white-space:pre-wrap;line-height:1.5}

.comment-item{display:flex;gap:10px;margin-bottom:14px}
.comment-body{flex:1;background:#f8fafc;padding:10px 13px;border-radius:9px}

.alert{padding:12px 16px;border-radius:8px;margin-bottom:16px;font-size:13.5px}
.alert-success{background:var(--green-bg);color:#15803d}
.alert-error{background:var(--red-bg);color:#b91c1c}

.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#171a2e,#4f46e5)}
.login-card{background:#fff;border-radius:16px;padding:40px;width:100%;max-width:380px;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.login-logo{text-align:center;margin-bottom:24px}
.login-logo .dot{width:12px;height:12px;background:var(--primary);border-radius:4px;display:inline-block;margin-right:6px}
.demo-creds{background:#f8fafc;border-radius:8px;padding:12px 14px;font-size:12px;color:var(--muted);margin-top:18px;line-height:1.6}

.progress-bar{background:#e5e9f2;border-radius:20px;height:8px;overflow:hidden}
.progress-bar-fill{background:var(--primary);height:100%}

@media (max-width: 900px){
  .sidebar{width:70px}
  .sidebar .nav-link span.label, .sidebar-brand span.label, .sidebar-footer{display:none}
  .main{margin-left:70px}
  .form-row,.form-row-3{grid-template-columns:1fr}
}