/* ============================================================
   Koyla Ledger — Design System
   ============================================================ */
:root{
  --ink-900:#0f1115;
  --ink-800:#161922;
  --ink-700:#1e222d;
  --ink-600:#2a2f3d;
  --ink-500:#4a5165;
  --paper:#f7f7f8;
  --paper-card:#ffffff;
  --border:#e6e6ea;
  --text-main:#16181d;
  --text-mute:#6b7280;
  --brand:#e8622c;
  --brand-dark:#c94f1f;
  --brand-soft:#fef1ea;
  --green:#1c9c6e;
  --green-soft:#e6f7f0;
  --red:#d0342c;
  --red-soft:#fdecec;
  --radius:14px;
  --radius-sm:9px;
  --shadow-card:0 1px 2px rgba(16,24,40,.04),0 1px 3px rgba(16,24,40,.06);
  --font-ui:'Inter',system-ui,-apple-system,sans-serif;
  --font-mono:'JetBrains Mono',monospace;
}

*{box-sizing:border-box;}
html,body{height:100%;}
body{
  margin:0;
  font-family:var(--font-ui);
  background:var(--paper);
  color:var(--text-main);
  -webkit-font-smoothing:antialiased;
}

.app-shell{display:flex;min-height:100vh;}

/* ---------- Sidebar ---------- */
.sidebar{
  width:260px;
  flex-shrink:0;
  background:var(--ink-800);
  color:#fff;
  display:flex;
  flex-direction:column;
  position:sticky;
  top:0;
  height:100vh;
}
.sidebar-brand{
  display:flex;align-items:center;gap:10px;
  padding:22px 20px 18px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.brand-mark{
  width:38px;height:38px;border-radius:10px;
  background:linear-gradient(145deg,var(--brand),var(--brand-dark));
  display:flex;align-items:center;justify-content:center;
  font-size:18px;color:#fff;flex-shrink:0;
}
.brand-name{font-weight:700;font-size:15px;line-height:1.2;}
.brand-sub{font-size:11.5px;color:rgba(255,255,255,.5);letter-spacing:.03em;text-transform:uppercase;margin-top:1px;}

.sidebar-nav{padding:14px 12px;display:flex;flex-direction:column;gap:2px;flex:1;}
.sidebar-nav a{
  display:flex;align-items:center;gap:11px;
  padding:10px 12px;border-radius:9px;
  color:rgba(255,255,255,.68);
  text-decoration:none;font-size:14px;font-weight:500;
  transition:background .15s,color .15s;
}
.sidebar-nav a i{font-size:16px;width:18px;text-align:center;}
.sidebar-nav a:hover{background:rgba(255,255,255,.06);color:#fff;}
.sidebar-nav a.active{background:var(--brand);color:#fff;}

.sidebar-footer{padding:16px;border-top:1px solid rgba(255,255,255,.08);}
.due-pill{
  background:rgba(255,255,255,.06);
  border-radius:var(--radius-sm);
  padding:12px 14px;
}
.due-pill span{display:block;font-size:11px;color:rgba(255,255,255,.55);text-transform:uppercase;letter-spacing:.04em;margin-bottom:3px;}
.due-pill strong{font-family:var(--font-mono);font-size:17px;color:#ffb199;}

/* ---------- Mobile topbar ---------- */
.mobile-topbar{
  display:none;
  align-items:center;gap:12px;
  background:var(--ink-800);color:#fff;
  padding:14px 16px;position:sticky;top:0;z-index:20;
  font-weight:600;
}
.menu-toggle{background:none;border:none;color:#fff;font-size:22px;}
@media(max-width:991px){
  .app-shell{display:block;}
  .mobile-topbar{display:flex;width:100%;}
  .sidebar{position:fixed;left:-270px;z-index:300;transition:left .22s ease;top:0;height:100vh;box-shadow:4px 0 24px rgba(0,0,0,.25);}
  .sidebar.open{left:0;}
  .sidebar.open .sidebar-nav,.sidebar.open .sidebar-footer{display:flex;}
  .sidebar-backdrop{
    display:none;position:fixed;inset:0;background:rgba(15,17,21,.45);z-index:29;
  }
  .sidebar.open ~ .sidebar-backdrop{display:block;}
}

/* ---------- Main content ---------- */
.main-content{flex:1;padding:32px 36px;max-width:1400px;width:100%;margin:0 auto;}
@media(max-width:768px){.main-content{padding:18px;}}

.page-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:26px;flex-wrap:wrap;}
.page-head h1{font-size:22px;font-weight:800;margin:0 0 4px;letter-spacing:-.01em;}
.page-head p{margin:0;color:var(--text-mute);font-size:14px;}

/* ---------- Cards ---------- */
.card-ui{
  background:var(--paper-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow-card);
}
.card-ui .card-ui-body{padding:20px 22px;}
.card-ui .card-ui-head{
  padding:16px 22px;border-bottom:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;
  font-weight:700;font-size:15px;
}

/* KPI stat cards */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px;margin-bottom:26px;}
.stat-card{
  background:var(--paper-card);border:1px solid var(--border);
  border-radius:var(--radius);padding:18px 20px;
  box-shadow:var(--shadow-card);
}
.stat-card .stat-label{font-size:12.5px;color:var(--text-mute);font-weight:600;text-transform:uppercase;letter-spacing:.03em;margin-bottom:8px;}
.stat-card .stat-value{font-family:var(--font-mono);font-size:24px;font-weight:600;letter-spacing:-.01em;}
.stat-card .stat-sub{font-size:12.5px;color:var(--text-mute);margin-top:4px;}
.stat-card.brand .stat-value{color:var(--brand-dark);}
.stat-card.green .stat-value{color:var(--green);}
.stat-card.red .stat-value{color:var(--red);}

/* Tables */
.table-ui{width:100%;border-collapse:collapse;font-size:14px;}
.table-ui thead th{
  text-align:left;font-size:11.5px;text-transform:uppercase;letter-spacing:.04em;
  color:var(--text-mute);font-weight:700;padding:10px 14px;border-bottom:1px solid var(--border);
  white-space:nowrap;
}
.table-ui tbody td{padding:13px 14px;border-bottom:1px solid var(--border);vertical-align:middle;}
.table-ui tbody tr:last-child td{border-bottom:none;}
.table-ui tbody tr:hover{background:#fafafa;}
.mono{font-family:var(--font-mono);}

.badge-due{background:var(--red-soft);color:var(--red);padding:3px 10px;border-radius:20px;font-size:12.5px;font-weight:700;font-family:var(--font-mono);}
.badge-clear{background:var(--green-soft);color:var(--green);padding:3px 10px;border-radius:20px;font-size:12.5px;font-weight:700;}
.badge-profit{background:var(--green-soft);color:var(--green);padding:2px 9px;border-radius:6px;font-size:12.5px;font-weight:600;font-family:var(--font-mono);}
.badge-old{background:#eef0f3;color:var(--ink-500);padding:2px 9px;border-radius:6px;font-size:11.5px;font-weight:600;}

/* Buttons */
.btn-brand{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;}
.btn-brand:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;}
.btn-outline-ui{border:1px solid var(--border);background:#fff;color:var(--text-main);font-weight:600;}
.btn-outline-ui:hover{background:#f4f4f5;}

/* Forms */
.form-label{font-weight:600;font-size:13.5px;color:var(--text-main);}
.form-control,.form-select{
  border:1px solid var(--border);border-radius:9px;padding:9px 12px;font-size:14.5px;
}
.form-control:focus,.form-select:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft);}

.calc-box{
  background:var(--brand-soft);border:1px dashed var(--brand);border-radius:var(--radius-sm);
  padding:16px 18px;margin-top:6px;
}
.calc-box .row-line{display:flex;justify-content:space-between;font-size:14px;padding:4px 0;}
.calc-box .row-line strong{font-family:var(--font-mono);}
.calc-box .total-line{border-top:1px solid rgba(232,98,44,.35);margin-top:6px;padding-top:10px;font-size:16px;}

.section-title{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--text-mute);margin:26px 0 12px;}

a{color:var(--brand-dark);}
.link-plain{color:var(--text-main);text-decoration:none;font-weight:600;}
.link-plain:hover{color:var(--brand-dark);}

/* ============================================================
   Mobile App Feel — bottom nav + responsive tables
   ============================================================ */
.bottom-nav{display:none;}

@media(max-width:991px){
  .bottom-nav{
    display:flex;
    position:fixed;left:0;right:0;bottom:0;z-index:40;
    background:#fff;border-top:1px solid var(--border);
    padding:6px 4px calc(6px + env(safe-area-inset-bottom));
    box-shadow:0 -2px 10px rgba(16,24,40,.06);
  }
  .bottom-nav a{
    flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;
    padding:7px 2px;color:var(--text-mute);text-decoration:none;
    font-size:10.5px;font-weight:600;border-radius:10px;
  }
  .bottom-nav a i{font-size:19px;}
  .bottom-nav a.active{color:var(--brand-dark);}
  .bottom-nav a.fab{
    position:relative;top:-14px;
  }
  .bottom-nav a.fab .fab-circle{
    width:46px;height:46px;border-radius:50%;
    background:linear-gradient(145deg,var(--brand),var(--brand-dark));
    display:flex;align-items:center;justify-content:center;
    color:#fff;font-size:20px;box-shadow:0 6px 14px rgba(232,98,44,.4);
    margin-bottom:2px;
  }
  .main-content{padding-bottom:88px !important;}
  .sidebar{width:250px;}
}

@media(min-width:992px){
  .mobile-topbar{display:none !important;}
}

/* Page head + buttons stack nicely on mobile */
@media(max-width:575px){
  .page-head{flex-direction:column;align-items:stretch;}
  .page-head > div:last-child,
  .page-head .btn,
  .page-head a.btn{width:100%;}
  .page-head .d-flex{flex-direction:column;}
  .page-head h1{font-size:19px;}
  .main-content{padding:14px 12px 88px;}
  .stat-grid{grid-template-columns:1fr 1fr;gap:10px;}
  .stat-card{padding:14px 14px;}
  .stat-card .stat-value{font-size:19px;}
  .card-ui .card-ui-body{padding:16px 14px;}
  .card-ui .card-ui-head{padding:14px 16px;font-size:14px;}
  .calc-box{padding:14px;}
  .modal-dialog{margin:10px;}
}

/* ---- Responsive tables: collapse into stacked cards on small screens ---- */
@media(max-width:640px){
  .table-ui{border:none;}
  .table-ui thead{display:none;}
  .table-ui tbody{display:block;}
  .table-ui tbody tr{
    display:block;
    background:#fff;
    border:1px solid var(--border);
    border-radius:12px;
    margin-bottom:10px;
    padding:12px 14px;
  }
  .table-ui tbody tr:hover{background:#fff;}
  .table-ui tbody td{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    padding:7px 0;
    border-bottom:1px dashed var(--border);
    text-align:right;
  }
  .table-ui tbody td:last-child{border-bottom:none;}
  .table-ui tbody td::before{
    content:attr(data-label);
    font-size:11.5px;
    font-weight:700;
    text-transform:uppercase;
    letter-spacing:.03em;
    color:var(--text-mute);
    text-align:left;
    flex-shrink:0;
  }
  .table-ui tbody td[data-label=""]::before,
  .table-ui tbody td:not([data-label])::before{content:none;}
  /* cells with no meaningful label (e.g. action buttons) span full width */
  .table-ui tbody td.cell-actions{justify-content:flex-end;}
}

/* Touch-friendly form controls */
@media(max-width:575px){
  .form-control,.form-select,.btn{font-size:16px;} /* prevents iOS zoom-in on focus */
  .btn{padding:10px 16px;}
}