@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,600;9..144,700&family=Inter:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root {
  --ink: #161B22;
  --ink-soft: #232A35;
  --paper: #F7F5EF;
  --paper-dim: #EFEBE0;
  --border: #E3DFD3;
  --border-dark: #333B47;
  --text: #1D2129;
  --text-soft: #6B7280;
  --text-on-ink: #F3F1E8;
  --text-on-ink-soft: #9CA7B4;
  --amber: #D98F2B;
  --amber-deep: #B8721E;
  --teal: #1E6E5C;
  --teal-soft: #E4F1EC;
  --risk: #B23A2E;
  --risk-soft: #F7E7E4;

  --font-display: 'Fraunces', serif;
  --font-body: 'Inter', -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --radius: 3px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

/* ---------- Auth shell ---------- */
.auth-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
}
@media (max-width: 860px) {
  .auth-shell { grid-template-columns: 1fr; }
  .auth-hero { display: none; }
}
.auth-hero {
  background: var(--ink);
  color: var(--text-on-ink);
  padding: 64px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}
.auth-hero::after {
  content: "";
  position: absolute;
  inset: auto -20% -30% auto;
  width: 480px; height: 480px;
  border: 1px solid rgba(217,143,43,0.25);
  border-radius: 50%;
}
.brand-mark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: 0.02em;
}
.brand-mark span { color: var(--amber); }
.hero-headline {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 42px;
  line-height: 1.15;
  max-width: 480px;
  margin: 0;
}
.hero-sub {
  color: var(--text-on-ink-soft);
  font-size: 15px;
  line-height: 1.6;
  max-width: 420px;
  margin-top: 18px;
}
.hero-stamp {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-on-ink-soft);
  border-top: 1px solid var(--border-dark);
  padding-top: 18px;
}
.auth-panel {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
}
.auth-card { width: 100%; max-width: 380px; }
.auth-card h1 {
  font-family: var(--font-display);
  font-size: 26px;
  margin: 0 0 4px;
}
.auth-card p.lead { color: var(--text-soft); font-size: 14px; margin: 0 0 28px; }

.tabs { display: flex; gap: 4px; margin-bottom: 24px; background: var(--paper-dim); padding: 4px; border-radius: var(--radius); }
.tab-btn {
  flex: 1; padding: 9px 0; border: none; background: transparent; cursor: pointer;
  font-family: var(--font-body); font-weight: 500; font-size: 13px; color: var(--text-soft);
  border-radius: 2px;
}
.tab-btn.active { background: var(--ink); color: var(--text-on-ink); }

.field { margin-bottom: 16px; }
.field label {
  display: block; font-size: 12px; font-weight: 600; letter-spacing: 0.03em;
  text-transform: uppercase; color: var(--text-soft); margin-bottom: 6px;
}
.field input, .field select {
  width: 100%; padding: 11px 12px; border: 1px solid var(--border); border-radius: var(--radius);
  font-family: var(--font-body); font-size: 14px; background: #fff; color: var(--text);
}
.field input:focus, .field select:focus, button:focus-visible, .tab-btn:focus-visible {
  outline: 2px solid var(--amber); outline-offset: 1px;
}

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 18px; border-radius: var(--radius); border: none; cursor: pointer;
  font-family: var(--font-body); font-weight: 600; font-size: 14px;
}
.btn-primary { background: var(--ink); color: var(--text-on-ink); width: 100%; }
.btn-primary:hover { background: var(--ink-soft); }
.btn-secondary { background: transparent; border: 1px solid var(--border-dark); color: var(--text); }
.btn-amber { background: var(--amber); color: #221600; }
.btn-amber:hover { background: var(--amber-deep); }
.btn-danger { background: transparent; color: var(--risk); border: 1px solid var(--risk-soft); }

.form-error {
  background: var(--risk-soft); color: var(--risk); font-size: 13px; padding: 10px 12px;
  border-radius: var(--radius); margin-bottom: 16px; display: none;
}
.form-error.show { display: block; }

/* ---------- App shell ---------- */
.app-shell { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; }
@media (max-width: 760px) { .app-shell { grid-template-columns: 1fr; } .sidebar { display: none; } }

.sidebar {
  background: var(--ink); color: var(--text-on-ink); padding: 28px 20px;
  display: flex; flex-direction: column; gap: 32px;
}
.sidebar .brand-mark { font-size: 18px; }
.nav-group { display: flex; flex-direction: column; gap: 2px; }
.nav-link {
  text-decoration: none; color: var(--text-on-ink-soft); font-size: 14px; font-weight: 500;
  padding: 10px 12px; border-radius: var(--radius); display: flex; align-items: center; gap: 10px;
}
.nav-link:hover { background: rgba(255,255,255,0.06); color: var(--text-on-ink); }
.nav-link.active { background: rgba(217,143,43,0.15); color: var(--amber); }
.sidebar-footer { margin-top: auto; }
.tenant-chip {
  font-family: var(--font-mono); font-size: 11px; color: var(--text-on-ink-soft);
  border: 1px solid var(--border-dark); border-radius: var(--radius); padding: 8px 10px; margin-bottom: 10px;
}
.tenant-chip strong { display: block; color: var(--text-on-ink); font-size: 13px; font-family: var(--font-body); }

.main { padding: 36px 44px; max-width: 1180px; }
.page-header { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 28px; gap: 20px; flex-wrap: wrap; }
.page-header h1 { font-family: var(--font-display); font-size: 28px; margin: 0 0 6px; }
.page-header p { color: var(--text-soft); font-size: 14px; margin: 0; max-width: 560px; }
.eyebrow {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--amber-deep); margin-bottom: 8px;
}

/* ---------- KPI cards ---------- */
.kpi-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 32px; }
@media (max-width: 900px) { .kpi-row { grid-template-columns: repeat(2, 1fr); } }
.kpi-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px;
}
.kpi-card .label { font-size: 12px; color: var(--text-soft); text-transform: uppercase; letter-spacing: 0.04em; }
.kpi-card .value { font-family: var(--font-mono); font-size: 26px; font-weight: 600; margin-top: 6px; }
.kpi-card .value.risk { color: var(--risk); }
.kpi-card .value.ok { color: var(--teal); }

/* ---------- Ledger table ---------- */
.ledger { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.ledger th {
  text-align: left; font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-soft);
  padding: 12px 16px; border-bottom: 1px solid var(--border); background: var(--paper-dim);
}
.ledger td { padding: 13px 16px; border-bottom: 1px solid var(--border); font-size: 14px; vertical-align: middle; }
.ledger tr:last-child td { border-bottom: none; }
.ledger td.num, .ledger th.num { font-family: var(--font-mono); text-align: right; }
.ledger tr:hover td { background: #FBFAF6; }

.stamp {
  display: inline-block; font-family: var(--font-mono); font-size: 10px; font-weight: 600;
  letter-spacing: 0.08em; padding: 4px 9px; border-radius: 20px; transform: rotate(-3deg);
  border: 1.5px solid currentColor;
}
.stamp.cleared { color: var(--teal); background: var(--teal-soft); }
.stamp.at-risk { color: var(--risk); background: var(--risk-soft); }

.hs-code { font-family: var(--font-mono); font-size: 12px; background: var(--paper-dim); padding: 2px 6px; border-radius: 3px; }

.card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.section-title { font-family: var(--font-display); font-size: 18px; margin: 0 0 16px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
@media (max-width: 900px) { .grid-2 { grid-template-columns: 1fr; } }

.result-line { display: flex; justify-content: space-between; padding: 9px 0; border-bottom: 1px dashed var(--border); font-size: 14px; }
.result-line:last-child { border-bottom: none; }
.result-line .amt { font-family: var(--font-mono); font-weight: 500; }
.result-line.total { font-weight: 700; font-size: 16px; padding-top: 14px; }
.result-line.total .amt { font-size: 18px; }

.empty-state { text-align: center; padding: 64px 20px; color: var(--text-soft); }
.empty-state h3 { font-family: var(--font-display); color: var(--text); font-size: 20px; margin-bottom: 6px; }

.toast {
  position: fixed; bottom: 24px; right: 24px; background: var(--ink); color: var(--text-on-ink);
  padding: 12px 18px; border-radius: var(--radius); font-size: 13px; opacity: 0; transform: translateY(8px);
  transition: opacity 0.2s, transform 0.2s; pointer-events: none; z-index: 50;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast.error { background: var(--risk); }

.modal-backdrop {
  display: none; position: fixed; inset: 0; background: rgba(22,27,34,0.5); z-index: 40;
  align-items: center; justify-content: center;
}
.modal-backdrop.show { display: flex; }
.modal { background: #fff; border-radius: var(--radius); padding: 28px; width: 100%; max-width: 460px; max-height: 88vh; overflow-y: auto; }
.modal h2 { font-family: var(--font-display); font-size: 20px; margin: 0 0 18px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }

.form-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.top-actions { display: flex; gap: 10px; }

.text-link { background: none; border: none; color: var(--amber-deep); font-weight: 600; font-size: 13px; cursor: pointer; padding: 0; }