/* ============================================================
   Buku Kas — Design tokens
   Metaphor: a real cash ledger book. Ruled lines, ink colors,
   tabular figures for amounts so numbers always line up.
   ============================================================ */
:root {
  --paper: #F4F5F1;
  --paper-card: #FFFFFF;
  --ink: #1F2A24;
  --ink-soft: #5B6660;
  --rule: #DBD8CC;
  --rule-strong: #C7C2B0;
  --brand: #145C4B;
  --brand-dark: #0E4438;
  --brand-tint: #E4EEE9;
  --in: #2F7D5A;
  --in-tint: #E6F2EA;
  --out: #B3452F;
  --out-tint: #FBEAE4;
  --warn-tint: #FCF3D9;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(31,42,36,0.06), 0 1px 12px rgba(31,42,36,0.05);
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, .display { font-family: var(--font-display); font-weight: 600; letter-spacing: -0.01em; }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
.mono, .amount { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

/* ---- App shell ---- */
.shell { display: flex; min-height: 100vh; }
.sidebar {
  width: 240px; flex-shrink: 0; background: var(--brand-dark); color: #EFF5F1;
  display: flex; flex-direction: column; padding: 20px 14px;
  overflow-y: auto; overflow-x: hidden; -webkit-overflow-scrolling: touch;
}
.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.2); border-radius: 4px; }

.sidebar .brand { font-family: var(--font-display); font-size: 20px; font-weight: 700; color: #fff; padding: 6px 10px 20px; }
.sidebar .brand small { display:block; font-family: var(--font-body); font-weight:400; font-size:12px; opacity:.7; letter-spacing:.04em; text-transform:uppercase; margin-top:2px;}
.sidebar nav { display: flex; flex-direction: column; gap: 2px; flex: 1; }
.sidebar a.navlink {
  color: #D9E6DF; padding: 10px 12px; border-radius: 8px; font-size: 14px; font-weight: 500;
  display:flex; align-items:center; gap:10px;
}
.sidebar a.navlink:hover { background: rgba(255,255,255,0.08); text-decoration: none; }
.sidebar a.navlink.active { background: #fff; color: var(--brand-dark); }
.sidebar .section-label { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; opacity: .55; margin: 16px 10px 6px; }

.topbar {
  display:flex; align-items:center; justify-content:space-between; gap:16px;
  padding: 14px 24px; background: rgba(255,255,255,0.9);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule);
  position: sticky; top:0; z-index: 10;
}
.main { flex: 1; min-width: 0; display: flex; flex-direction: column; min-height: 100vh; }
.content { padding: 24px; max-width: 1080px; width: 100%; margin: 0 auto; flex: 1; }

/* ---- Business switcher ---- */
.biz-switch { position: relative; }
.biz-switch summary { list-style:none; cursor:pointer; display:flex; align-items:center; gap:8px; padding:8px 12px; border:1px solid var(--rule); border-radius:8px; background:#fff; font-weight:600; font-size:14px;}
.biz-switch summary::-webkit-details-marker{display:none;}
.biz-switch .menu { position:absolute; top:calc(100% + 6px); left:0; width:100%; background:#fff; border:1px solid var(--rule); border-radius:10px; box-shadow:var(--shadow); padding:6px; z-index:20;}
.biz-switch .menu a, .biz-switch .menu button { display:block; width:100%; text-align:left; padding:9px 10px; border-radius:6px; border:0; background:none; font-size:14px; color:var(--ink); cursor:pointer;}
.biz-switch .menu a:hover, .biz-switch .menu button:hover { background: var(--brand-tint); text-decoration:none;}

/* ---- Cards & ledger ---- */
.card { background: var(--paper-card); border: 1px solid var(--rule); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.card + .card { margin-top: 16px; }
.grid { display: grid; gap: 16px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 780px) { .grid-3, .grid-2 { grid-template-columns: 1fr; } }

.balance-card { background: var(--brand); color: #fff; border: none; }
.balance-card .label { text-transform: uppercase; letter-spacing: .08em; font-size: 12px; opacity: .8; }
.balance-card .value { font-family: var(--font-display); font-size: 34px; font-weight: 700; margin-top: 6px; }

.stat .label { font-size: 12px; color: var(--ink-soft); text-transform: uppercase; letter-spacing: .06em; }
.stat .value { font-family: var(--font-mono); font-size: 22px; font-weight: 600; margin-top: 4px; }
.stat .value.in { color: var(--in); }
.stat .value.out { color: var(--out); }

.ledger { width: 100%; border-collapse: collapse; }
.ledger th { text-align:left; font-size:11px; text-transform:uppercase; letter-spacing:.06em; color:var(--ink-soft); padding: 8px 10px; border-bottom: 2px solid var(--rule-strong); }
.ledger td { padding: 12px 10px; border-bottom: 1px solid var(--rule); font-size: 14px; vertical-align: top; }
.ledger tr:last-child td { border-bottom: none; }
.ledger td.amount { text-align: right; font-weight: 600; white-space: nowrap; }
.ledger .amount.in { color: var(--in); }
.ledger .amount.out { color: var(--out); }
.ledger .desc { color: var(--ink-soft); font-size: 13px; }

.table-responsive { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }

.badge { display:inline-flex; align-items:center; gap:5px; padding: 3px 9px; border-radius: 100px; font-size: 12px; font-weight: 600; }
.badge.in { background: var(--in-tint); color: var(--in); }
.badge.out { background: var(--out-tint); color: var(--out); }
.badge.role { background: var(--brand-tint); color: var(--brand-dark); text-transform: capitalize; }

/* ---- Forms ---- */
label { display:block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--ink); }
input, select, textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--rule-strong); border-radius: 8px;
  font-family: var(--font-body); font-size: 14px; background: #fff; color: var(--ink);
}
input.mono-input { font-family: var(--font-mono); }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--brand); outline-offset: 1px; border-color: var(--brand); }
.field { margin-bottom: 16px; }
.field-row { display:flex; gap:14px; }
.field-row .field { flex:1; }
.hint { font-size:12px; color: var(--ink-soft); margin-top:4px; }
.error { font-size:12px; color: var(--out); margin-top:4px; }

.filter-form { display:flex; gap:12px; align-items:flex-end; flex-wrap:wrap; }
.filter-form .field { margin-bottom:0; flex: 1 1 200px; min-width: 0; max-width: 100%; }
.filter-form .form-actions { display:flex; gap:8px; flex-wrap:wrap; align-items:center; }
@media (max-width: 600px) {
  .filter-form { flex-direction: column; align-items: stretch; }
  .filter-form .field { flex: 1 1 auto; width: 100%; max-width: 100%; margin-bottom: 12px !important; }
  .filter-form .form-actions { flex: 1 1 100%; width: 100%; margin-top: 4px; }
  .filter-form .form-actions .btn { flex: 1 1 100%; justify-content: center; }
  .filter-form .form-actions .btn-secondary { flex: 1 1 calc(50% - 4px); }

  .field-row { flex-direction: column; gap: 12px; }
}

/* ---- Buttons ---- */
.btn {
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding: 10px 16px; border-radius: 8px; font-weight: 600; font-size: 14px;
  border: 1px solid transparent; cursor: pointer; font-family: var(--font-body);
}
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); text-decoration:none; }
.btn-secondary { background: #fff; border-color: var(--rule-strong); color: var(--ink); }
.btn-secondary:hover { background: var(--paper); text-decoration:none; }
.btn-danger { background: #fff; border-color: var(--out); color: var(--out); }
.btn-danger:hover { background: var(--out-tint); text-decoration:none; }
.btn-in { background: var(--in); color:#fff; }
.btn-out { background: var(--out); color:#fff; }
.btn-sm { padding: 6px 10px; font-size: 13px; }
.btn:disabled { opacity:.5; cursor:not-allowed; }

/* ---- Alerts ---- */
.alert { padding: 12px 14px; border-radius: 8px; font-size: 14px; margin-bottom: 16px; border: 1px solid transparent; }
.alert-success { background: var(--in-tint); color: var(--brand-dark); border-color: #BFDFCF; }
.alert-error { background: var(--out-tint); color: var(--out); border-color: #EBC5B7; }
.alert-info { background: var(--warn-tint); color: #7A5E12; border-color: #EEDD9D; }

/* ---- Misc ---- */
.page-header { display:flex; align-items:center; justify-content:space-between; margin-bottom: 18px; flex-wrap: wrap; gap: 10px; }
.page-header h1 { font-size: 24px; margin: 0; }
.muted { color: var(--ink-soft); }
.empty { text-align:center; padding: 40px 20px; color: var(--ink-soft); }
.pill-tabs { display:flex; gap:6px; background:var(--paper); padding:4px; border-radius:10px; border:1px solid var(--rule); width:fit-content;}
.pill-tabs a { padding:7px 14px; border-radius:7px; font-size:13px; font-weight:600; color:var(--ink-soft); }
.pill-tabs a.active { background:#fff; color:var(--brand-dark); box-shadow: var(--shadow); }
.pill-tabs a:hover{text-decoration:none;}

.mobile-nav { display:none; }
.sidebar-overlay { display: none; }
@media (max-width: 900px) {
  .sidebar { 
    position: fixed; 
    top: 0; 
    left: 0; 
    height: 100vh; 
    z-index: 100; 
    transform: translateX(-100%); 
    transition: transform 0.3s ease; 
  }
  .sidebar.sidebar-open {
    transform: translateX(0);
  }
  .sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0,0,0,0.5);
    z-index: 90;
    opacity: 0;
    transition: opacity 0.3s ease;
  }
  .sidebar-overlay.show {
    display: block;
    opacity: 1;
  }
  .mobile-nav {
    display:flex; position: fixed; bottom:0; left: 0; width: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    border-top:1px solid rgba(0,0,0,0.05);
    justify-content: space-around; padding: 8px 6px calc(8px + env(safe-area-inset-bottom));
    z-index: 30; box-shadow: 0 -4px 20px rgba(0,0,0,0.04);
  }
  .mobile-nav a {
    display:flex; flex-direction:column; align-items:center; gap:4px;
    font-size:18px; font-weight:600; color: var(--ink-soft); padding:8px 12px;
    border-radius: 12px; transition: all 0.2s ease;
  }
  .mobile-nav a span { font-size: 10px; text-transform: uppercase; letter-spacing: 0.03em; }
  .mobile-nav a:hover { background: rgba(0,0,0,0.03); text-decoration: none; }
  .mobile-nav a.active { color: var(--brand-dark); background: var(--brand-tint); transform: translateY(-2px); }
  .content { padding: 16px; padding-bottom: 90px; }
  
  .hamburger-btn { display: flex !important; }
}

.auth-wrap { min-height: 100vh; display:flex; align-items:center; justify-content:center; background: var(--paper); padding: 24px; }
.auth-card { width: 100%; max-width: 400px; background:#fff; border:1px solid var(--rule); border-radius: 14px; padding: 32px; box-shadow: var(--shadow); }
.auth-card .display { font-size: 26px; margin-bottom: 4px; }
.auth-card .sub { color: var(--ink-soft); font-size: 14px; margin-bottom: 24px; }