/* =========================================================================
   MUNICIPAL WATER BILLING SYSTEM — STYLESHEET
   Palette: deep civic navy + water teal, on a soft neutral background.
   ========================================================================= */

:root {
  --navy-900: #0f2a43;
  --navy-800: #143a5c;
  --navy-700: #1b4a70;
  --teal-600: #0f9b8e;
  --teal-500: #14b3a3;
  --teal-050: #e6f7f5;
  --bg: #f3f5f7;
  --surface: #ffffff;
  --border: #e2e6ea;
  --text-900: #17222e;
  --text-600: #52616f;
  --text-400: #8b98a3;

  --success: #1f9d55;
  --success-bg: #e6f6ec;
  --warning: #b3790a;
  --warning-bg: #fdf1dc;
  --danger: #c23b3b;
  --danger-bg: #fbe9e9;
  --info: #2563a8;
  --info-bg: #e8f1fb;
  --accent: #7c4dcc;
  --accent-bg: #f1eafb;

  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 2px rgba(15, 42, 67, 0.06), 0 4px 14px rgba(15, 42, 67, 0.06);
  --sidebar-w: 250px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Inter', -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text-900);
  font-size: 14.5px;
}

h1, h2, h3, h4, .brand-title {
  font-family: 'Poppins', 'Inter', sans-serif;
  font-weight: 600;
  color: var(--navy-900);
  margin: 0 0 6px;
}

a { color: var(--teal-600); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------------------------------------------------------------------
   LAYOUT: SIDEBAR + TOPBAR + CONTENT
   --------------------------------------------------------------------- */
.app-shell { display: flex; min-height: 100vh; }

.sidebar {
  width: var(--sidebar-w);
  background: linear-gradient(180deg, var(--navy-900), var(--navy-800) 70%);
  color: #dce8f0;
  flex-shrink: 0;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.sidebar .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 22px 20px 18px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.brand-logos {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.brand-logo {
  width: 40px; height: 40px;
  border-radius: 50%;
  object-fit: cover;
  background: #fff;
  box-shadow: 0 0 0 2px rgba(255,255,255,0.15);
  flex-shrink: 0;
}

.sidebar .brand-title { color: #fff; font-size: 15px; line-height: 1.25; margin: 0; }
.sidebar .brand-sub { color: #9fb4c4; font-size: 11.5px; margin-top: 1px; }

.sidebar nav { padding: 14px 12px; flex: 1; }
.sidebar .nav-label {
  text-transform: uppercase;
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: #6f8ba0;
  padding: 14px 10px 6px;
}
.sidebar a.nav-link {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  color: #cfe0ea;
  font-size: 13.6px;
  margin-bottom: 2px;
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease, padding-left 0.15s ease;
}
.sidebar a.nav-link:hover { padding-left: 15px; }
.sidebar a.nav-link .ico { width: 18px; text-align: center; opacity: 0.9; }
.sidebar a.nav-link:hover { background: rgba(255,255,255,0.06); color: #fff; }
.sidebar a.nav-link.active {
  background: var(--teal-600);
  color: #fff;
  font-weight: 600;
}
.sidebar .sidebar-footer {
  padding: 14px 20px 20px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 12px;
  color: #8fa6b8;
}

.main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 14px 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 5;
}
.topbar h1 { font-size: 19px; margin: 0; }
.topbar .page-sub { color: var(--text-600); font-size: 12.5px; margin-top: 2px; }
.topbar .user-chip {
  display: flex; align-items: center; gap: 10px;
  font-size: 13px; color: var(--text-600);
}
.topbar .user-chip .avatar {
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--teal-050); color: var(--teal-600);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 12px;
}

/* mobile sidebar toggle button: hidden on desktop, shown below the 880px breakpoint */
#sidebarToggle { display: none; margin-right: 10px; font-size: 16px; padding: 6px 11px; }

/* dark backdrop behind the sidebar on mobile so tapping outside closes it */
.sidebar-overlay { display: none; }

.content { padding: 24px 26px 60px; flex: 1 0 auto; }

/* ---------------------------------------------------------------------
   COMPONENTS
   --------------------------------------------------------------------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px 22px;
  margin-bottom: 20px;
  transition: box-shadow 0.2s ease;
}
.card-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 16px; gap: 12px; flex-wrap: wrap;
}
.card-header h2 { font-size: 15.5px; margin: 0; }
.card-header .actions { display: flex; gap: 8px; }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 22px;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.stat-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(15, 42, 67, 0.12);
}
.stat-card .stat-icon {
  width: 38px; height: 38px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; margin-bottom: 10px;
}
.stat-card .stat-value { font-size: 24px; font-weight: 700; color: var(--navy-900); font-family: 'Poppins', sans-serif; }
.stat-card .stat-label { font-size: 12.5px; color: var(--text-600); margin-top: 2px; }
.stat-card.teal .stat-icon { background: var(--teal-050); color: var(--teal-600); }
.stat-card.success .stat-icon { background: var(--success-bg); color: var(--success); }
.stat-card.warning .stat-icon { background: var(--warning-bg); color: var(--warning); }
.stat-card.danger .stat-icon { background: var(--danger-bg); color: var(--danger); }
.stat-card.info .stat-icon { background: var(--info-bg); color: var(--info); }

/* buttons */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  font-size: 13.2px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  line-height: 1.3;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.08s ease, box-shadow 0.15s ease, opacity 0.15s ease;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--teal-600); color: #fff; }
.btn-primary:hover { background: var(--teal-500); box-shadow: 0 2px 10px rgba(20,179,163,0.28); }
.btn-navy { background: var(--navy-800); color: #fff; }
.btn-navy:hover { background: var(--navy-700); box-shadow: 0 2px 10px rgba(15,42,67,0.28); }
.btn-outline { background: #fff; color: var(--text-900); border-color: var(--border); }
.btn-outline:hover { background: #f7f9fa; border-color: #cfd6dc; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { opacity: 0.92; box-shadow: 0 2px 10px rgba(194,59,59,0.28); }
.btn-sm { padding: 5px 10px; font-size: 12.2px; }
.btn[disabled] { opacity: 0.55; cursor: not-allowed; transform: none; box-shadow: none; }

/* accessible focus states */
a:focus-visible, button:focus-visible, .btn:focus-visible,
input:focus-visible, select:focus-visible, textarea:focus-visible,
.nav-link:focus-visible {
  outline: 2px solid var(--teal-500);
  outline-offset: 2px;
}

/* forms */
label { display: block; font-size: 12.8px; font-weight: 600; color: var(--text-600); margin-bottom: 5px; }
.form-group { margin-bottom: 16px; }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
input[type=text], input[type=number], input[type=date], input[type=email],
input[type=password], input[type=month], select, textarea {
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13.6px;
  font-family: inherit;
  background: #fff;
  color: var(--text-900);
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--teal-500);
  box-shadow: 0 0 0 3px rgba(20,179,163,0.15);
}
.hint { font-size: 11.8px; color: var(--text-400); margin-top: 4px; }
.required::after { content: " *"; color: var(--danger); }

/* tables */
.table-wrap { overflow-x: auto; }
table.data-table { width: 100%; border-collapse: collapse; font-size: 13.4px; }
table.data-table th {
  text-align: left;
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-600);
  padding: 10px 12px;
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
}
table.data-table td {
  padding: 11px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
table.data-table tbody tr:hover { background: #fafcfd; }
table.data-table td.num, table.data-table th.num { text-align: right; font-variant-numeric: tabular-nums; }
.row-actions { display: flex; gap: 6px; }

/* pagination */
.pagination-bar {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 10px;
  margin-top: 14px; padding-top: 14px;
  border-top: 1px solid var(--border);
}
.pagination-summary { font-size: 12.5px; color: var(--text-600); }
.pagination { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.page-link {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 30px; height: 30px; padding: 0 8px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-size: 12.6px; font-weight: 600; color: var(--text-900);
  text-decoration: none; background: #fff;
  transition: background 0.15s ease, border-color 0.15s ease;
}
.page-link:hover { background: #f7f9fa; border-color: #cfd6dc; text-decoration: none; }
.page-link.current { background: var(--navy-800); border-color: var(--navy-800); color: #fff; cursor: default; }
.page-link.disabled { opacity: 0.4; cursor: not-allowed; pointer-events: none; }
.page-ellipsis { color: var(--text-400); padding: 0 2px; font-size: 12.6px; }
.per-page-form { display: flex; align-items: center; gap: 8px; }
.per-page-form .per-page-label { margin: 0; font-weight: 400; color: var(--text-600); white-space: nowrap; }
.per-page-form select { width: auto; padding: 6px 8px; font-size: 12.6px; }

/* ---------------------------------------------------------------------
   DASHBOARD CHARTS (pure CSS/HTML — no external chart library, so the
   dashboard still renders on an offline/XAMPP install with no internet)
   --------------------------------------------------------------------- */

/* Collection rate trend: grouped vertical bars, one group per month */
.chart-trend {
  display: flex; align-items: flex-end; gap: 18px;
  height: 200px; padding: 10px 6px 0;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}
.chart-trend-col {
  display: flex; flex-direction: column; align-items: center;
  justify-content: flex-end; flex: 1 0 64px; height: 100%; position: relative;
}
.chart-trend-bars {
  display: flex; align-items: flex-end; gap: 4px;
  width: 100%; height: 100%; justify-content: center;
}
.chart-trend-bar {
  width: 16px; border-radius: 4px 4px 0 0;
  min-height: 2px;
  position: relative;
  transition: opacity 0.15s ease;
}
.chart-trend-bar:hover { opacity: 0.8; }
.chart-trend-bar.billed { background: #d7dee4; }
.chart-trend-bar.collected { background: var(--teal-600); }
.chart-trend-bar .bar-tip {
  position: absolute; top: -20px; left: 50%; transform: translateX(-50%);
  font-size: 10.6px; font-weight: 700; color: var(--text-600); white-space: nowrap;
}
.chart-trend-rate {
  font-size: 11px; font-weight: 700; color: var(--navy-800);
  margin-top: 6px;
}
.chart-trend-label {
  font-size: 11px; color: var(--text-600); margin-top: 4px; text-align: center; white-space: nowrap;
}
.chart-legend { display: flex; gap: 18px; margin-top: 12px; flex-wrap: wrap; }
.chart-legend-item { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--text-600); }
.chart-legend-swatch { width: 11px; height: 11px; border-radius: 3px; display: inline-block; }
.chart-legend-swatch.billed { background: #d7dee4; }
.chart-legend-swatch.collected { background: var(--teal-600); }

/* Top delinquent accounts: horizontal bar list */
.delinquent-list { display: flex; flex-direction: column; gap: 12px; }
.delinquent-row { display: grid; grid-template-columns: 26px 1fr 110px; align-items: center; gap: 10px; }
.delinquent-rank {
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--danger-bg); color: var(--danger);
  font-size: 11.5px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.delinquent-row:nth-child(n+4) .delinquent-rank { background: var(--warning-bg); color: var(--warning); }
.delinquent-main { min-width: 0; }
.delinquent-name { font-size: 13.4px; font-weight: 600; color: var(--text-900); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.delinquent-meta { font-size: 11.5px; color: var(--text-600); margin-top: 1px; }
.delinquent-track { background: #eef1f3; border-radius: 999px; height: 8px; margin-top: 6px; overflow: hidden; }
.delinquent-fill { height: 100%; border-radius: 999px; background: var(--danger); }
.delinquent-amount { text-align: right; font-weight: 700; font-size: 13.2px; color: var(--navy-900); font-variant-numeric: tabular-nums; }

/* badges */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-danger  { background: var(--danger-bg); color: var(--danger); }
.badge-info    { background: var(--info-bg); color: var(--info); }
.badge-muted   { background: #eef1f3; color: var(--text-600); }
.badge-accent  { background: var(--accent-bg); color: var(--accent); }
.badge-teal    { background: var(--teal-050); color: var(--teal-600); }

/* alerts */
.alert {
  position: relative;
  padding: 12px 40px 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 13.4px;
  margin-bottom: 18px;
  border: 1px solid transparent;
  animation: alertIn 0.25s ease;
}
@keyframes alertIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}
.alert-success { background: var(--success-bg); color: var(--success); border-color: #bfe6cd; }
.alert-danger  { background: var(--danger-bg); color: var(--danger); border-color: #f0c4c4; }
.alert-info    { background: var(--info-bg); color: var(--info); border-color: #c6ddf3; }
.alert-warning { background: var(--warning-bg); color: var(--warning); border-color: #ecd9a8; }
.alert-close {
  position: absolute; top: 6px; right: 8px;
  background: none; border: none; cursor: pointer;
  font-size: 16px; line-height: 1; color: inherit; opacity: 0.55;
  padding: 4px 6px; border-radius: 4px;
}
.alert-close:hover { opacity: 1; background: rgba(0,0,0,0.06); }

.empty-state { text-align: center; padding: 50px 20px; color: var(--text-600); }
.empty-state .ico { font-size: 34px; margin-bottom: 10px; }

.pill-tabs { display: flex; gap: 6px; margin-bottom: 18px; flex-wrap: wrap; }
.pill-tabs a {
  padding: 7px 14px; border-radius: 999px; font-size: 12.8px; font-weight: 600;
  color: var(--text-600); background: #eef1f3; text-decoration: none;
}
.pill-tabs a.active { background: var(--navy-800); color: #fff; }

.text-muted { color: var(--text-600); }
tr.payment-voided td { color: var(--text-600); background: #fbf3f3; }
tr.payment-voided .void-strike { text-decoration: line-through; }
.void-note { font-size: 12px; color: var(--danger); margin-top: 3px; }
.text-danger { color: var(--danger); font-weight: 600; }
.text-right { text-align: right; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* login page */
.login-wrap {
  min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center;
  background: radial-gradient(circle at top left, var(--navy-700), var(--navy-900) 60%);
  padding: 20px;
}
.login-card {
  background: #fff; width: 100%; max-width: 380px;
  border-radius: 14px; padding: 34px 30px; box-shadow: 0 20px 60px rgba(0,0,0,0.35);
}
.login-card .login-logos {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  margin-bottom: 14px;
}
.login-card .login-logo {
  width: 56px; height: 56px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 0 0 3px var(--teal-050), var(--shadow);
}
.login-card h1 { font-size: 19px; margin-bottom: 2px; }
.login-card p.sub { color: var(--text-600); font-size: 13px; margin-top: 0; margin-bottom: 22px; }
.login-card .btn-primary { width: 100%; justify-content: center; padding: 10px; margin-top: 6px; }
.login-card .demo-hint {
  margin-top: 18px; font-size: 11.8px; color: var(--text-400); text-align: center;
}

/* print (official receipt / bill) */
.print-sheet { max-width: 720px; margin: 0 auto; }
.print-header {
  position: relative;
  text-align: center;
  margin-bottom: 18px;
  border-bottom: 2px solid var(--navy-900);
  padding: 2px 96px 14px;
  min-height: 82px;
}
.print-header-text h2 { margin-bottom: 2px; }
/* seal and water-system logo are direct children of .print-header (not
   nested in a shared wrapper), so they position reliably in every browser */
.print-header-logo {
  position: absolute;
  top: 0;
  width: 76px;
  height: 76px;
  border-radius: 50%;
  object-fit: cover;
  background: #fff;
  box-shadow: 0 0 0 2px #fff, 0 0 0 3px var(--border);
}
.print-header-logo-left { left: 0; }
.print-header-logo-right { right: 0; }

@media (max-width: 480px) {
  .print-header { padding: 2px 62px 14px; }
  .print-header-logo { width: 52px; height: 52px; }
}
.bill-meta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 24px; margin-bottom: 18px; font-size: 13px; }
.bill-meta-grid div span { color: var(--text-600); }
.bill-total-box {
  background: var(--teal-050); border: 1px solid #bfe6e0; border-radius: 8px;
  padding: 14px 18px; display: flex; justify-content: space-between; align-items: center; margin-top: 16px;
}
.bill-total-box .label { font-size: 13px; color: var(--text-600); }
.bill-total-box .amount { font-size: 22px; font-weight: 700; color: var(--navy-900); font-family: 'Poppins', sans-serif; }
.fill-line { display: inline-block; min-width: 60px; border-bottom: 1px solid #333; }

@media print {
  .no-print, .sidebar, .topbar { display: none !important; }
  body { background: #fff; }
  .card { box-shadow: none; border: none; }
  .main { width: 100% !important; margin: 0 !important; }
  .content { padding: 0 !important; }
  .print-only { display: block !important; }
}
.print-only { display: none; }

/* responsive */
@media (max-width: 880px) {
  #sidebarToggle { display: inline-flex; }
  .sidebar { position: fixed; left: -260px; z-index: 50; transition: left 0.2s ease; }
  .sidebar.open { left: 0; box-shadow: 6px 0 24px rgba(0,0,0,0.25); }
  .sidebar-overlay {
    display: block;
    position: fixed; inset: 0;
    background: rgba(15,42,67,0.45);
    z-index: 45;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
  }
  .sidebar-overlay.show { opacity: 1; pointer-events: auto; }
  .main { width: 100%; }
  .content { padding: 16px; }
  .topbar { padding: 12px 16px; flex-wrap: wrap; row-gap: 8px; }
  .topbar h1 { font-size: 16.5px; }
  .topbar .page-sub { font-size: 11.5px; }
  .card-header { flex-direction: column; align-items: stretch; }
  .card-header .actions { width: 100%; }
  .card-header .actions .btn { flex: 1; justify-content: center; }
  .stat-grid { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; }
  .bill-meta-grid { grid-template-columns: 1fr; }
  .pagination-bar { flex-direction: column; align-items: stretch; }
  .pagination { justify-content: center; }
  .delinquent-row { grid-template-columns: 22px 1fr; }
  .delinquent-amount { grid-column: 2; text-align: left; margin-top: 2px; }
  .chart-trend { gap: 10px; }
}

/* footer credit */
.app-footer {
  padding: 14px 26px;
  border-top: 1px solid var(--border);
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--text-400);
}
.app-footer-credit strong { color: var(--text-600); }

.login-footer {
  margin-top: 18px; text-align: center; font-size: 11.8px; color: #7f96a8;
}
.login-footer strong { color: #cfe0ea; }

@media (max-width: 880px) {
  .app-footer { padding: 12px 16px; font-size: 11px; justify-content: center; text-align: center; }
}

/* Billing Month picker (Year + Month dropdowns) */
.bm-picker { display: flex; gap: 8px; }
.bm-picker .bm-year { flex: 0 0 34%; min-width: 0; }
.bm-picker .bm-month { flex: 1 1 auto; min-width: 0; }
.bm-picker.bm-all .bm-year { flex: 1 1 100%; }