/* ── Reset & Base ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0D0D1A;
  --bg2:       #141428;
  --bg3:       #1a1a35;
  --border:    rgba(255,255,255,.08);
  --text:      #e8e8f0;
  --text-muted:#8888aa;
  --gold:      #C9A84C;
  --gold-light:#e0c070;
  --green:     #10B981;
  --red:       #EF4444;
  --blue:      #3B82F6;
  --orange:    #F59E0B;
  --radius:    12px;
  --sidebar-w: 220px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 14px;
  min-height: 100vh;
}

/* ── Login ────────────────────────────────────────────────────────────────── */
.screen { display: none; }
.screen.active { display: block; }

.login-wrap {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-logo {
  text-align: center;
  margin-bottom: 32px;
}

.logo-mark {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: var(--gold);
  color: #111;
  font-size: 22px;
  font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 12px;
  letter-spacing: 1px;
}

.logo-mark.sm {
  width: 36px; height: 36px;
  font-size: 12px;
  flex-shrink: 0;
}

.login-logo h1 { font-size: 24px; font-weight: 700; margin-bottom: 4px; }
.login-logo p  { color: var(--text-muted); font-size: 13px; }

/* ── App layout ───────────────────────────────────────────────────────────── */
#screen-app {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: var(--sidebar-w);
  background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  padding: 0;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px 16px;
  border-bottom: 1px solid var(--border);
  font-weight: 700;
  font-size: 14px;
  color: var(--gold);
}

.sidebar-nav {
  flex: 1;
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  border: none;
  background: none;
  color: var(--text-muted);
  font-size: 13px;
  cursor: pointer;
  text-align: left;
  width: 100%;
  transition: background .15s, color .15s;
}

.nav-item:hover  { background: var(--bg3); color: var(--text); }
.nav-item.active { background: rgba(201,168,76,.12); color: var(--gold); font-weight: 600; }

.nav-icon { font-size: 15px; }

.logout-btn {
  margin: 12px;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: none;
  color: var(--text-muted);
  font-size: 12px;
  cursor: pointer;
  transition: .15s;
}
.logout-btn:hover { color: var(--red); border-color: var(--red); }

.main-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  padding: 28px 32px;
  max-width: 1100px;
}

/* ── Tabs ─────────────────────────────────────────────────────────────────── */
.tab { display: none; }
.tab.active { display: block; }

.page-title { font-size: 20px; font-weight: 700; margin-bottom: 20px; }
.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.page-header .page-title { margin-bottom: 0; }

/* ── Cards ────────────────────────────────────────────────────────────────── */
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin-bottom: 24px;
}

.kpi-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}

.kpi-label { font-size: 11px; color: var(--text-muted); text-transform: uppercase; letter-spacing: .5px; margin-bottom: 6px; }
.kpi-value { font-size: 22px; font-weight: 700; }
.kpi-value.green  { color: var(--green); }
.kpi-value.gold   { color: var(--gold); }
.kpi-value.red    { color: var(--red); }
.kpi-value.orange { color: var(--orange); }

/* ── Table / List ─────────────────────────────────────────────────────────── */
.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th {
  text-align: left;
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .5px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
}

.data-table td {
  padding: 12px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  vertical-align: middle;
}

.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: rgba(255,255,255,.02); }

/* ── Badges ───────────────────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .3px;
}
.badge-draft   { background: rgba(136,136,170,.15); color: var(--text-muted); }
.badge-sent    { background: rgba(59,130,246,.15);  color: var(--blue); }
.badge-paid    { background: rgba(16,185,129,.15);  color: var(--green); }
.badge-overdue { background: rgba(239,68,68,.15);   color: var(--red); }

/* ── Forms ────────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-size: 12px; color: var(--text-muted); margin-bottom: 5px; }

input, select, textarea {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 9px 12px;
  font-size: 13px;
  outline: none;
  transition: border-color .15s;
}
input:focus, select:focus { border-color: var(--gold); }
input::placeholder { color: var(--text-muted); }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

/* ── Buttons ──────────────────────────────────────────────────────────────── */
.btn {
  border: none;
  border-radius: 8px;
  padding: 9px 18px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity .15s, transform .1s;
}
.btn:hover  { opacity: .88; }
.btn:active { transform: scale(.97); }

.btn-primary { background: var(--gold); color: #111; }
.btn-sm      { padding: 5px 12px; font-size: 12px; }
.btn-ghost   { background: transparent; border: 1px solid var(--border); color: var(--text-muted); }
.btn-ghost:hover { border-color: var(--gold); color: var(--gold); }
.btn-danger  { background: transparent; border: 1px solid var(--red); color: var(--red); }
.btn-link    { background: none; border: none; color: var(--gold); font-size: 13px; cursor: pointer; padding: 4px 0; }

/* ── Filter chips ─────────────────────────────────────────────────────────── */
.filter-row { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 18px; }
.filter-chip {
  border: 1px solid var(--border);
  background: none;
  color: var(--text-muted);
  border-radius: 20px;
  padding: 4px 14px;
  font-size: 12px;
  cursor: pointer;
  transition: .15s;
}
.filter-chip:hover  { border-color: var(--gold); color: var(--gold); }
.filter-chip.active { background: var(--gold); color: #111; border-color: var(--gold); font-weight: 600; }

/* ── Modals ───────────────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0; z-index: 999;
  background: rgba(0,0,0,.7);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}

.modal-box {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 20px;
}
.modal-header h3 { font-size: 16px; color: var(--gold); }
.modal-close { background: none; border: none; color: var(--text-muted); font-size: 20px; cursor: pointer; }

/* ── Invoice items ────────────────────────────────────────────────────────── */
.inv-item-row {
  display: grid;
  grid-template-columns: 1fr 80px 100px 70px 28px;
  gap: 8px;
  align-items: end;
  margin-bottom: 10px;
}
.inv-item-row .form-group { margin-bottom: 0; }

.section-label {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 10px;
}

.invoice-totals {
  background: var(--bg3);
  border-radius: 8px;
  padding: 14px 16px;
  margin-top: 14px;
}
.totals-row { display: flex; justify-content: space-between; font-size: 13px; padding: 4px 0; }
.totals-row.bold { font-weight: 700; font-size: 15px; color: var(--gold); border-top: 1px solid var(--border); margin-top: 6px; padding-top: 8px; }

/* ── Action buttons in table ──────────────────────────────────────────────── */
.action-row { display: flex; gap: 6px; }

/* ── NCF alert ────────────────────────────────────────────────────────────── */
.ncf-alert {
  background: rgba(239,68,68,.1);
  border: 1px solid rgba(239,68,68,.3);
  color: var(--red);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 12px;
  margin-bottom: 16px;
}

/* ── Toast ────────────────────────────────────────────────────────────────── */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: #1e1e3a; border: 1px solid var(--border);
  color: var(--text); padding: 10px 20px; border-radius: 8px;
  font-size: 13px; opacity: 0; transition: opacity .3s;
  pointer-events: none; z-index: 9999; white-space: nowrap;
}
.toast.show { opacity: 1; }

/* ── Spinner ──────────────────────────────────────────────────────────────── */
.spinner {
  width: 28px; height: 28px; margin: 40px auto;
  border: 3px solid var(--border);
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.empty-state { text-align: center; color: var(--text-muted); padding: 40px 0; font-size: 13px; }

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 700px) {
  .sidebar { display: none; }
  .main-content { margin-left: 0; padding: 16px; }
  .inv-item-row { grid-template-columns: 1fr 70px 90px 60px 24px; }
}

.error-msg { color: var(--red); font-size: 12px; margin-top: 8px; min-height: 16px; }