/* Ekatra Invoice Tracker — ported from original index.html */
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:#F9FAFB;color:#1F2937}
a{color:inherit;text-decoration:none}

.layout{display:flex;height:100vh}
.sidebar{width:215px;background:#fff;border-right:1px solid #E5E7EB;display:flex;flex-direction:column;flex-shrink:0}
.logo{padding:16px;border-bottom:1px solid #F3F4F6;display:flex;align-items:center;gap:10px}
.logo-icon{width:36px;height:36px;border-radius:10px;background:#4F46E5;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex-shrink:0}
.nav{flex:1;padding:8px 0}
.nav-btn{width:100%;display:flex;align-items:center;gap:10px;padding:10px 16px;border:none;cursor:pointer;font-size:13px;background:transparent;color:#4B5563;text-align:left;border-right:3px solid transparent;transition:all 0.15s}
.nav-btn:hover{background:#F9FAFB}
.nav-btn.active{background:#EEF2FF;color:#4338CA;font-weight:600;border-right-color:#4F46E5}
.main{flex:1;overflow-y:auto;padding:24px;min-width:0}

.header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:22px;gap:12px;flex-wrap:wrap}
.header h1{font-size:21px;font-weight:700}
.header p{font-size:12px;color:#9CA3AF;margin-top:2px}
.header-btns{display:flex;gap:8px;flex-shrink:0}

.btn-primary{padding:8px 14px;background:#4F46E5;color:#fff;border:none;border-radius:8px;font-size:12px;font-weight:600;cursor:pointer}
.btn-primary:hover{background:#4338CA}
.btn-primary:disabled{background:#9CA3AF;cursor:not-allowed}
.btn-outline{padding:8px 14px;border:1px solid #D1D5DB;border-radius:8px;font-size:12px;color:#4B5563;background:#fff;cursor:pointer;display:flex;align-items:center;gap:5px}
.btn-outline:hover{background:#F9FAFB}
.btn-wa{padding:8px 14px;border:none;border-radius:8px;font-size:12px;font-weight:600;cursor:pointer;background:#25D366;color:#fff;display:flex;align-items:center;gap:5px}
.btn-wa:hover{background:#1EAD52}
.btn-danger{padding:6px 10px;border:1px solid #FCA5A5;border-radius:6px;font-size:11px;color:#DC2626;background:#fff;cursor:pointer}
.btn-icon{background:none;border:none;cursor:pointer;padding:4px;color:#6B7280;border-radius:6px}
.btn-icon:hover{background:#F3F4F6;color:#4F46E5}

.g4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:18px}
.g3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:18px}
.g2{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:18px}
.g1{margin-bottom:18px}

.card{background:#fff;border-radius:12px;padding:18px;border:1px solid #F3F4F6;box-shadow:0 1px 3px rgba(0,0,0,0.04)}
.kpi{border-left:4px solid;border-radius:12px;padding:18px}
.kpi-lbl{font-size:10px;font-weight:700;letter-spacing:.05em;color:#6B7280;margin-bottom:3px}
.kpi-val{font-size:22px;font-weight:700;margin:2px 0}
.kpi-sub{font-size:11px;color:#9CA3AF}

.tbl-wrap{background:#fff;border-radius:12px;border:1px solid #F3F4F6;overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:12px}
thead tr{background:#F9FAFB;border-bottom:1px solid #E5E7EB}
th{text-align:left;padding:10px 12px;font-size:10px;font-weight:700;color:#6B7280;text-transform:uppercase;letter-spacing:.04em;white-space:nowrap;cursor:pointer;user-select:none}
th:hover{color:#4F46E5}
td{padding:9px 12px;border-bottom:1px solid #F9FAFB;white-space:nowrap}
tr:last-child td{border-bottom:none}
tr:hover td{background:#F5F3FF}

.badge{padding:2px 7px;border-radius:10px;font-size:10px;font-weight:600;display:inline-block}
.b-paid{background:#D1FAE5;color:#047857}
.b-unpaid{background:#FEE2E2;color:#DC2626}
.b-partial{background:#FEF3C7;color:#D97706}
.b-overdue{background:#FEE2E2;color:#991B1B}
.b-tds{background:#FFEDD5;color:#EA580C}
.b-poc{background:#EEF2FF;color:#4F46E5}
.b-terms{background:#F3F4F6;color:#4B5563}
.b-sector{background:#F5F3FF;color:#6D28D9}
.b-src-wa{background:#DCFCE7;color:#15803D}
.b-src-manual{background:#F3F4F6;color:#6B7280}

.mono{font-family:monospace;font-size:10px;font-weight:700;color:#4F46E5}
.tr{text-align:right}
.red{color:#DC2626;font-weight:700}
.green{color:#16A34A}
.amber{color:#D97706}

.bar-bg{height:6px;background:#F3F4F6;border-radius:3px;overflow:hidden;margin-top:3px}
.bar{height:100%;border-radius:3px}

.fbar{background:#fff;border-radius:10px;padding:12px 16px;border:1px solid #F3F4F6;margin-bottom:12px;display:flex;align-items:flex-end;flex-wrap:wrap;gap:12px}
.fbar select,.fbar input{border:1px solid #E5E7EB;border-radius:6px;padding:5px 8px;font-size:12px;background:#fff}
.fbar label{font-size:10px;font-weight:600;color:#6B7280;display:block;margin-bottom:2px}
.fbar-group{margin-right:4px}

.page{display:none}
.page.active{display:block}

.user-box{padding:14px;border-top:1px solid #F3F4F6;display:flex;align-items:center;gap:8px}
.avatar{width:30px;height:30px;border-radius:50%;background:#E0E7FF;color:#4F46E5;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:11px;flex-shrink:0}

.stat-row{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:16px}
.stat-chip{padding:6px 12px;border-radius:20px;font-size:11px;font-weight:600;background:#F3F4F6;color:#374151;white-space:nowrap}

/* Modal */
.modal-bg{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:100;align-items:center;justify-content:center}
.modal-bg.open{display:flex}
.modal{background:#fff;border-radius:16px;padding:24px;width:580px;max-width:95vw;max-height:90vh;overflow-y:auto}
.modal h2{font-size:17px;font-weight:700;margin-bottom:16px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form-group label{font-size:10px;font-weight:600;color:#6B7280;display:block;margin-bottom:3px}
.form-group input,.form-group select,.form-group textarea{width:100%;border:1px solid #E5E7EB;border-radius:8px;padding:7px 10px;font-size:12px;outline:none;font-family:inherit}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:#4F46E5;box-shadow:0 0 0 2px rgba(79,70,229,.1)}
.col2{grid-column:span 2}
.modal-footer{display:flex;justify-content:flex-end;gap:8px;margin-top:18px}

/* Overall stats banner */
.overall-banner{background:linear-gradient(135deg,#1e1b4b 0%,#312e81 100%);border-radius:12px;padding:18px 22px;margin-bottom:18px;color:#fff}
.ob-title{font-size:11px;font-weight:700;letter-spacing:.08em;color:#a5b4fc;margin-bottom:10px}
.ob-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.ob-item{border-left:1px solid rgba(255,255,255,.1);padding-left:14px}
.ob-item:first-child{border-left:none;padding-left:0}
.ob-label{font-size:9px;font-weight:700;letter-spacing:.06em;color:#a5b4fc}
.ob-value{font-size:18px;font-weight:700;color:#fff;margin-top:2px}
.ob-sub{font-size:10px;color:#818cf8;margin-top:1px}

/* Status dot */
.status-dot{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:6px;vertical-align:middle}
.status-dot.green{background:#10B981;box-shadow:0 0 0 3px rgba(16,185,129,.2)}
.status-dot.red{background:#EF4444;box-shadow:0 0 0 3px rgba(239,68,68,.2)}
.status-dot.amber{background:#F59E0B;box-shadow:0 0 0 3px rgba(245,158,11,.2)}

/* Login page */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#4F46E5,#6366F1);padding:20px}
.login-card{background:#fff;border-radius:16px;padding:40px;width:100%;max-width:400px;box-shadow:0 20px 25px -5px rgba(0,0,0,0.1)}
.login-card h1{font-size:22px;font-weight:700;margin-bottom:4px;color:#1F2937}
.login-card p{font-size:12px;color:#6B7280;margin-bottom:24px}
.login-card .form-group{margin-bottom:14px}
.login-card input{width:100%;padding:10px 12px;border:1px solid #E5E7EB;border-radius:8px;font-size:13px;outline:none}
.login-card input:focus{border-color:#4F46E5;box-shadow:0 0 0 3px rgba(79,70,229,.1)}
.login-card button{width:100%;padding:11px;background:#4F46E5;color:#fff;border:none;border-radius:8px;font-size:13px;font-weight:600;cursor:pointer;margin-top:6px}
.login-card button:hover{background:#4338CA}
.login-err{background:#FEE2E2;color:#991B1B;border:1px solid #FECACA;padding:9px 12px;border-radius:8px;font-size:12px;margin-bottom:12px;display:none}
.login-err.show{display:block}

/* Toast */
.toast{position:fixed;bottom:24px;right:24px;background:#1F2937;color:#fff;padding:12px 20px;border-radius:10px;font-size:13px;box-shadow:0 10px 15px -3px rgba(0,0,0,.15);transform:translateY(80px);opacity:0;transition:all .25s;z-index:200;max-width:400px}
.toast.show{transform:translateY(0);opacity:1}
.toast.success{background:#047857}
.toast.error{background:#DC2626}

/* Spinner */
.spinner{display:inline-block;width:14px;height:14px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite;vertical-align:middle}
.spinner.dark{border-color:rgba(79,70,229,.2);border-top-color:#4F46E5}
@keyframes spin{to{transform:rotate(360deg)}}

/* Empty state */
.empty{text-align:center;padding:40px 20px;color:#6B7280;font-size:13px}
.empty h3{font-size:14px;color:#374151;margin-bottom:4px}

/* Responsive */
@media (max-width: 900px){
  .g4,.g3,.g2{grid-template-columns:1fr}
  .ob-grid{grid-template-columns:repeat(2,1fr)}
  .sidebar{width:60px}
  .sidebar .logo>div:last-child,.sidebar .nav-btn,.sidebar .user-box>div:last-child{display:none}
}