/* SIMBUL — design system (diperbarui 2026-11-08). LIGHT THEME SAJA.
   Warna solid, tanpa gradient ungu/biru, tanpa glassmorphism/glow.
   Border tipis + shadow lembut. Semua class lama dipertahankan. */
:root {
  --color-bg: #F4F6F9;
  --color-surface: #FFFFFF;
  --color-surface-muted: #F1F3F5;
  --color-text: #17233B;
  --color-text-muted: #667085;
  --color-border: #E4E7EC;
  --color-primary: #2457C5;
  --color-primary-hover: #1B44A0;
  --color-primary-soft: #EAF0FC;
  --color-success: #16804A;
  --color-success-soft: #E6F4EC;
  --color-warning: #A15C07;
  --color-warning-soft: #FEF3E2;
  --color-danger: #C43232;
  --color-danger-soft: #FDECEC;
  --color-info: #176B87;
  --color-info-soft: #E6F2F5;
  --radius-input: 10px;
  --radius-panel: 14px;
  --sidebar-width: 252px;
  --shadow-panel: 0 1px 2px rgba(16,24,40,.04), 0 2px 10px rgba(16,24,40,.05);
  --shadow-lift: 0 6px 20px rgba(16,24,40,.09);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.55;
}
h1 { font-size: 26px; font-weight: 700; margin: 0 0 8px; line-height: 1.3; letter-spacing: -.01em; }
h2 { font-size: 19px; font-weight: 600; margin: 0 0 8px; }
h3 { font-size: 15px; font-weight: 600; margin: 0 0 6px; }
p { margin: 0 0 12px; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
.muted { color: var(--color-text-muted); }
.small { font-size: 13px; }
.nums { font-variant-numeric: tabular-nums; }

/* Fokus keyboard jelas (WCAG 2.2 AA) — jangan dihilangkan. */
:focus-visible { outline: 3px solid var(--color-primary); outline-offset: 2px; border-radius: 4px; }

.container { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
.page { padding: 24px 0 48px; }

/* Logo mark — kotak bulat berisi huruf S, dipakai di brand semua layout. */
.logo-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: 9px; flex: 0 0 32px;
  background: var(--color-primary); color: #fff;
  font-weight: 800; font-size: 17px; line-height: 1;
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; color: var(--color-text); }
.brand span { color: var(--color-primary); }
.brand:hover { text-decoration: none; }

/* Header publik */
.topbar-public { background: var(--color-surface); border-bottom: 1px solid var(--color-border); box-shadow: 0 1px 4px rgba(16,24,40,.04); }
.topbar-public .container { display: flex; align-items: center; justify-content: space-between; min-height: 60px; }
.topbar-public nav a { font-weight: 500; }

/* Panel / kartu — border tipis + shadow lembut. */
.panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-panel);
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-panel);
}
.panel-narrow { max-width: 480px; margin: 0 auto; }

/* Tombol — min 44px tinggi (touch target). */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 10px 18px;
  border-radius: var(--radius-input);
  border: 1px solid transparent;
  font: inherit; font-weight: 600; font-size: 14px;
  cursor: pointer; text-decoration: none; white-space: nowrap;
  transition: background .15s ease, box-shadow .15s ease, transform .05s ease;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--color-primary); color: #fff; box-shadow: 0 2px 6px rgba(36,87,197,.28); }
.btn-primary:hover { background: var(--color-primary-hover); box-shadow: 0 4px 12px rgba(36,87,197,.32); }
.btn-secondary { background: var(--color-surface); color: var(--color-text); border-color: var(--color-border); }
.btn-secondary:hover { background: var(--color-surface-muted); }
.btn-danger { background: var(--color-danger); color: #fff; }
.btn-ghost { background: transparent; color: var(--color-primary); min-height: 44px; }
.btn[disabled] { opacity: .55; cursor: not-allowed; }

/* Form — label permanen, bukan placeholder saja. */
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; font-weight: 500; margin-bottom: 6px; }
.field .hint { font-size: 12px; color: var(--color-text-muted); margin-top: 4px; }
.field .error { font-size: 13px; color: var(--color-danger); margin-top: 4px; }
.input, select.input, textarea.input {
  width: 100%; min-height: 44px; padding: 10px 12px;
  border: 1px solid var(--color-border); border-radius: var(--radius-input);
  background: var(--color-surface); color: var(--color-text); font: inherit; font-size: 15px;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.input:focus { border-color: var(--color-primary); outline: none; box-shadow: 0 0 0 3px rgba(36,87,197,.18); }
.input[aria-invalid="true"] { border-color: var(--color-danger); }
.required::after { content: " *"; color: var(--color-danger); }
.checkbox-row { display: flex; flex-wrap: wrap; gap: 12px; }
.checkbox-row label { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; font-size: 14px; font-weight: 400; margin: 0; }
.checkbox-row input { width: 20px; height: 20px; }

/* Tabel — scroll horizontal jelas di mobile, header th + scope. */
.table-wrap { overflow-x: auto; border: 1px solid var(--color-border); border-radius: var(--radius-panel); background: var(--color-surface); box-shadow: var(--shadow-panel); }
table.data { width: 100%; border-collapse: collapse; min-width: 640px; font-size: 14px; }
table.data th, table.data td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--color-border); vertical-align: top; }
table.data th { background: var(--color-surface-muted); font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--color-text-muted); }
table.data tr:last-child td { border-bottom: 0; }
table.data tbody tr:hover { background: #F8FAFD; }

/* Badge status — teks + warna, bukan warna saja. */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: 999px; font-size: 12px; font-weight: 600;
  border: 1px solid transparent; white-space: nowrap;
}
.badge-belum_bayar { background: #FEF3E2; color: #7A3E00; border-color: #F5D9A8; }
.badge-menunggu_verifikasi { background: #FFF4D6; color: var(--color-warning); border-color: #F0D48A; }
.badge-lunas { background: #E6F4EC; color: var(--color-success); border-color: #BFE3CC; }
.badge-ditolak { background: #FDECEC; color: var(--color-danger); border-color: #F5C6C6; }
.badge-kedaluwarsa { background: var(--color-surface-muted); color: var(--color-text-muted); border-color: var(--color-border); }
.badge-aktif { background: #E6F4EC; color: var(--color-success); border-color: #BFE3CC; }
.badge-nonaktif { background: var(--color-surface-muted); color: var(--color-text-muted); border-color: var(--color-border); }

/* Ringkasan angka dashboard — label + periode + sumber, bukan angka polos. */
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 16px; }
.metric {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-panel); padding: 16px;
  box-shadow: var(--shadow-panel);
  display: flex; flex-direction: column; gap: 2px;
  transition: box-shadow .15s ease, transform .15s ease;
}
.metric:hover { box-shadow: var(--shadow-lift); transform: translateY(-1px); }
.metric .label { font-size: 13px; color: var(--color-text-muted); }
.metric .value { font-size: 24px; font-weight: 700; font-variant-numeric: tabular-nums; margin: 4px 0; letter-spacing: -.01em; }
.metric .sub { font-size: 12px; color: var(--color-text-muted); }
.metric .sub a { font-size: 12px; }
/* Chip ikon di atas kartu metrik — warna lembut per jenis. */
.metric-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 42px; height: 42px; border-radius: 12px; margin-bottom: 10px;
}
.metric-icon svg { width: 22px; height: 22px; }
.metric-blue .metric-icon { background: var(--color-primary-soft); color: var(--color-primary); }
.metric-green .metric-icon { background: var(--color-success-soft); color: var(--color-success); }
.metric-amber .metric-icon { background: var(--color-warning-soft); color: var(--color-warning); }
.metric-red .metric-icon { background: var(--color-danger-soft); color: var(--color-danger); }
.metric-teal .metric-icon { background: var(--color-info-soft); color: var(--color-info); }

/* Alert / empty state */
.alert { border: 1px solid var(--color-border); border-left: 4px solid var(--color-info); background: var(--color-surface); border-radius: 8px; padding: 12px 14px; margin-bottom: 16px; box-shadow: var(--shadow-panel); }
.alert-sukses { border-left-color: var(--color-success); }
.alert-error { border-left-color: var(--color-danger); }
.alert-info { border-left-color: var(--color-info); }
.empty { text-align: center; padding: 32px 16px; color: var(--color-text-muted); }
.empty h3 { color: var(--color-text); }

/* Filter bar */
.filterbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: end; margin-bottom: 16px; }
.filterbar .field { margin-bottom: 0; flex: 1 1 160px; }

/* Pagination */
.pagination { display: flex; gap: 8px; align-items: center; justify-content: center; margin-top: 16px; }
.pagination .btn { min-height: 44px; min-width: 44px; padding: 8px 12px; }

/* Layout admin — sidebar 252px, konten padding 24–32px. */
.shell { display: flex; min-height: 100vh; }
.sidebar {
  width: var(--sidebar-width); flex: 0 0 var(--sidebar-width);
  background: var(--color-surface); border-right: 1px solid var(--color-border);
  padding: 16px 12px; position: sticky; top: 0; height: 100vh; overflow-y: auto;
}
.sidebar .brand { display: flex; padding: 8px 12px 16px; }
.sidebar nav a {
  display: flex; align-items: center; gap: 11px; min-height: 44px; padding: 10px 12px;
  border-radius: 10px; color: var(--color-text); font-size: 14px; font-weight: 500;
  position: relative; transition: background .15s ease, color .15s ease;
}
.sidebar nav a:hover { background: var(--color-surface-muted); text-decoration: none; }
.sidebar nav a.active { background: var(--color-primary-soft); color: var(--color-primary); font-weight: 600; }
.sidebar nav a.active::before {
  content: ""; position: absolute; left: -12px; top: 8px; bottom: 8px; width: 4px;
  border-radius: 0 4px 4px 0; background: var(--color-primary);
}
.nav-icon { width: 19px; height: 19px; flex: 0 0 19px; }
.nav-icon svg { width: 19px; height: 19px; display: block; }
.sidebar .nav-section { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--color-text-muted); padding: 18px 12px 6px; }
.main-area { flex: 1; min-width: 0; }
.topbar {
  background: var(--color-surface); border-bottom: 1px solid var(--color-border);
  padding: 12px 24px; display: flex; align-items: center; justify-content: space-between; gap: 12px;
  position: sticky; top: 0; z-index: 10; box-shadow: 0 1px 4px rgba(16,24,40,.04);
}
.content { padding: 24px 28px 48px; max-width: 1100px; }
.menu-toggle { display: none; }

/* Footer */
.footer { border-top: 1px solid var(--color-border); padding: 20px 0; color: var(--color-text-muted); font-size: 13px; background: var(--color-surface); }

/* Detail list (tagihan) */
.kv { display: grid; grid-template-columns: 180px 1fr; gap: 8px 16px; font-size: 14px; }
.kv dt { color: var(--color-text-muted); }
.kv dd { margin: 0; }

/* Halaman login — kartu di tengah dengan kepala brand. */
.login-wrap { max-width: 440px; margin: 24px auto 0; }
.login-brand { text-align: center; margin-bottom: 20px; }
.login-brand .logo-mark { width: 52px; height: 52px; border-radius: 14px; font-size: 27px; margin-bottom: 12px; box-shadow: 0 4px 14px rgba(36,87,197,.35); }
.login-brand h1 { font-size: 24px; margin: 0 0 4px; }
.login-brand p { color: var(--color-text-muted); font-size: 14px; margin: 0; }
.demo-box {
  margin-top: 16px; padding: 12px 14px; border-radius: 10px;
  background: var(--color-surface-muted); border: 1px solid var(--color-border);
  font-size: 13px; color: var(--color-text-muted); line-height: 1.6;
}
.demo-box strong { color: var(--color-text); }

/* Halaman publik — hero + kartu fitur. */
.hero { padding: 36px 0 8px; }
.hero h1 { font-size: 32px; }
.hero .lead { font-size: 17px; color: var(--color-text-muted); max-width: 640px; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.feature-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-panel); padding: 18px; box-shadow: var(--shadow-panel);
  transition: box-shadow .15s ease, transform .15s ease;
}
.feature-card:hover { box-shadow: var(--shadow-lift); transform: translateY(-1px); }
.feature-card .metric-icon { margin-bottom: 12px; }
.feature-card h3 { margin: 0 0 4px; font-size: 15px; }
.feature-card p { margin: 0; font-size: 14px; color: var(--color-text-muted); }

/* Responsive — breakpoint DESIGN §3: <640, 640–1023, >=1024. */
@media (max-width: 1023px) {
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  body { font-size: 14px; }
  h1 { font-size: 22px; }
  .hero h1 { font-size: 26px; }
  .content { padding: 16px 16px 40px; }
  .page { padding: 16px 0 40px; }
  .metrics { grid-template-columns: 1fr 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .panel { padding: 16px; }
  /* Sidebar jadi drawer */
  .sidebar {
    position: fixed; left: 0; top: 0; z-index: 40; transform: translateX(-100%);
    transition: transform .2s ease; box-shadow: 0 8px 24px rgba(0,0,0,.18);
  }
  .sidebar.open { transform: translateX(0); }
  .menu-toggle { display: inline-flex; }
  .kv { grid-template-columns: 1fr; gap: 2px; }
  .topbar { padding: 12px 16px; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}