:root {
  --bg: #f3f5f8;
  --surface: #ffffff;
  --surface-2: #f8fafc;
  --border: #dde3ea;
  --text: #1d2733;
  --muted: #64748b;
  --primary: #1f5fa8;
  --primary-dark: #174a84;
  --primary-soft: #e6eef8;
  --nav-bg: #17283b;
  --nav-text: #c9d4e1;
  --nav-muted: #6f8399;
  --nav-active: #2b7bd6;
  --danger: #c0392b;
  --success: #1e8a4c;
  --warning: #b7791f;
  --radius: 6px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08);
  font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  color: var(--text);
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body { background: var(--bg); }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
button, input, select, textarea { font: inherit; color: inherit; }

/* ---------- Top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 16px;
  height: 52px; padding: 0 16px;
  background: #0f1d2c; color: #fff;
  box-shadow: 0 1px 0 rgba(255,255,255,.05);
}
.brand { display: flex; align-items: center; gap: 10px; color: #fff; }
.brand:hover { text-decoration: none; }
.brand-logo {
  display: grid; place-items: center; width: 30px; height: 30px; border-radius: 6px;
  background: linear-gradient(135deg, #2b7bd6, #1f5fa8); font-weight: 700;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text small { color: #8ea3b9; font-size: 11px; }
.topbar-spacer { flex: 1; }
.company { display: flex; align-items: center; gap: 6px; color: #8ea3b9; font-size: 12px; }
.company select { background: #1b2d41; color: #fff; border: 1px solid #2c4058; border-radius: 4px; padding: 3px 6px; }
.lang-switch { display: flex; border: 1px solid #2c4058; border-radius: 4px; overflow: hidden; }
.lang-switch button { background: transparent; border: 0; color: #8ea3b9; padding: 4px 10px; cursor: pointer; font-weight: 600; font-size: 12px; }
.lang-switch button.active { background: var(--nav-active); color: #fff; }
.user { display: flex; align-items: center; gap: 10px; font-size: 13px; color: #c9d4e1; }
.user-link { display: flex; align-items: center; gap: 8px; color: #c9d4e1; }
.user-link:hover { text-decoration: none; color: #fff; }
.topbar .logout-btn { background: transparent; border-color: #2c4058; color: #c9d4e1; }
.topbar .logout-btn:hover { background: #1b2d41; }

/* ---------- Login ---------- */
body.logged-out .topbar, body.logged-out .layout { display: none; }
.login-screen { min-height: 100vh; display: grid; place-items: center; padding: 16px; background: linear-gradient(160deg, #0f1d2c 0%, #17283b 55%, #1f5fa8 140%); }
.login-screen[hidden] { display: none; }
.login-card { width: 100%; max-width: 360px; padding: 28px 28px 22px; display: flex; flex-direction: column; gap: 14px; }
.login-card h1 { margin: 4px 0 0; font-size: 18px; }
.login-brand { display: flex; align-items: center; gap: 10px; color: var(--text); }
.login-brand .brand-logo { color: #fff; }
.login-brand > span:last-child { display: flex; flex-direction: column; line-height: 1.1; }
.login-brand small { color: var(--muted); font-size: 11px; }
.login-card input { width: 100%; }
.login-submit { justify-content: center; padding: 9px 14px; }
.login-error { color: var(--danger); font-size: 13px; }
.login-lang { align-self: center; border-color: var(--border); }
.login-lang button { color: var(--muted); }
.avatar { display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: #2c4058; font-size: 11px; font-weight: 700; }
.icon-btn { background: transparent; border: 0; color: inherit; cursor: pointer; font-size: 18px; padding: 4px 6px; }
.menu-toggle { display: none; }

/* ---------- Layout ---------- */
.layout { display: flex; min-height: calc(100vh - 52px); }
.sidebar {
  width: 260px; flex-shrink: 0; background: var(--nav-bg); color: var(--nav-text);
  padding: 8px 0 24px; overflow-y: auto; position: sticky; top: 52px; height: calc(100vh - 52px);
}
.content { flex: 1; min-width: 0; padding: 0 24px 40px; }
.demo-banner {
  margin: 0 -24px 20px; padding: 7px 24px; font-size: 12px;
  background: #fff7e6; color: #8a5a00; border-bottom: 1px solid #f3dfb4;
}

/* ---------- Navigation ---------- */
.nav-link, .nav-group > summary {
  display: flex; align-items: center; gap: 10px; padding: 8px 16px; cursor: pointer;
  color: var(--nav-text); list-style: none; user-select: none;
}
.nav-group > summary::-webkit-details-marker { display: none; }
.nav-link:hover, .nav-group > summary:hover { background: rgba(255,255,255,.05); text-decoration: none; }
.nav-icon { width: 18px; text-align: center; opacity: .85; }
.nav-group > summary .chev { margin-left: auto; font-size: 10px; transition: transform .15s; opacity: .6; }
.nav-group[open] > summary .chev { transform: rotate(90deg); }
.nav-group.dimmed > summary { color: var(--nav-muted); }
.nav-sub { padding: 2px 0 6px; }
.nav-sub .nav-link { padding: 6px 16px 6px 44px; font-size: 13px; }
.nav-link.active { background: rgba(43,123,214,.18); color: #fff; box-shadow: inset 3px 0 0 var(--nav-active); }
.nav-link.disabled { color: var(--nav-muted); cursor: not-allowed; }
.nav-link.disabled:hover { background: transparent; }
.nav-link .lock { margin-left: auto; font-size: 11px; opacity: .7; }
.nav-sep { height: 1px; background: rgba(255,255,255,.06); margin: 6px 0; }

/* ---------- Page header ---------- */
.page-head { display: flex; align-items: flex-end; gap: 16px; margin-bottom: 16px; flex-wrap: wrap; }
.page-head h1 { margin: 0; font-size: 22px; font-weight: 600; }
.page-head .sub { color: var(--muted); font-size: 13px; margin-top: 4px; }
.page-head .actions { margin-left: auto; display: flex; gap: 8px; flex-wrap: wrap; }
.crumbs { font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.crumbs a { color: var(--muted); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 6px; padding: 7px 14px; border-radius: var(--radius);
  border: 1px solid var(--border); background: var(--surface); cursor: pointer; font-weight: 500; white-space: nowrap;
}
.btn:hover { background: var(--surface-2); text-decoration: none; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-dark); }
.btn.danger { color: var(--danger); border-color: #efc6c1; }
.btn.danger:hover { background: #fdf1ef; }
.btn.small { padding: 4px 10px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: default; }
.link-btn { background: none; border: 0; color: var(--danger); cursor: pointer; font-size: 16px; padding: 2px 6px; }

/* ---------- Cards / panels ---------- */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; box-shadow: var(--shadow); }
.card + .card { margin-top: 16px; }
.card-head { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--border); }
.card-head h2 { margin: 0; font-size: 15px; font-weight: 600; }
.card-body { padding: 16px; }

/* ---------- Tabs ---------- */
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border); margin-bottom: 16px; }
.tabs a { padding: 9px 16px; color: var(--muted); border-bottom: 2px solid transparent; margin-bottom: -1px; font-weight: 500; }
.tabs a:hover { text-decoration: none; color: var(--text); }
.tabs a.active { color: var(--primary); border-bottom-color: var(--primary); }

/* ---------- List / table ---------- */
.toolbar { display: flex; gap: 10px; align-items: center; padding: 12px 16px; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.toolbar input[type=search] { width: 280px; max-width: 100%; }
.toolbar .count { margin-left: auto; color: var(--muted); font-size: 12px; }
.table-wrap { overflow-x: auto; }
table.grid { width: 100%; border-collapse: collapse; }
table.grid th, table.grid td { padding: 8px 12px; text-align: left; border-bottom: 1px solid #edf1f5; white-space: nowrap; }
table.grid th { background: var(--surface-2); font-size: 12px; text-transform: uppercase; letter-spacing: .02em; color: var(--muted); font-weight: 600; position: sticky; top: 0; }
table.grid th.sortable { cursor: pointer; }
table.grid th.sortable:hover { color: var(--text); }
table.grid th .arrow { font-size: 10px; margin-left: 4px; }
table.grid tbody tr.clickable { cursor: pointer; }
table.grid tbody tr.clickable:hover { background: var(--primary-soft); }
table.grid td.num, table.grid th.num { text-align: right; font-variant-numeric: tabular-nums; }
table.grid td.wrap { white-space: normal; min-width: 220px; }
.empty { padding: 32px; text-align: center; color: var(--muted); }
.pager { display: flex; align-items: center; gap: 10px; justify-content: flex-end; padding: 10px 16px; font-size: 12px; color: var(--muted); }

.badge { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 11px; font-weight: 600; background: #eef2f6; color: #475569; }
.badge.Draft { background: #eef2f6; color: #475569; }
.badge.Approved { background: #e6f0fb; color: #1f5fa8; }
.badge.Posted { background: #e7f6ee; color: var(--success); }
.badge.Paid { background: #efe9fb; color: #6b46c1; }
.badge.SkyAI { background: #fff4e0; color: #9a5b00; }
.badge.yes { background: #e7f6ee; color: var(--success); }
.badge.no { background: #f6eeee; color: #9b2c2c; }

/* ---------- Forms ---------- */
.form-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px 18px; }
.field { display: flex; flex-direction: column; gap: 5px; min-width: 0; }
.field.span-2 { grid-column: span 2; }
.field.span-4 { grid-column: 1 / -1; }
.field label { font-size: 12px; font-weight: 600; color: #475569; }
.field label .req { color: var(--danger); margin-left: 2px; }
.field .help { font-size: 11px; color: var(--muted); }
.field .hint { font-size: 11px; color: var(--primary); min-height: 0; }
.field .err { font-size: 11px; color: var(--danger); }
input[type=text], input[type=password], input[type=email], input[type=search], input[type=number], input[type=date], select, textarea {
  width: 100%; padding: 7px 9px; border: 1px solid var(--border); border-radius: 5px; background: #fff;
}
textarea { min-height: 64px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid rgba(31,95,168,.25); border-color: var(--primary); }
input[readonly] { background: var(--surface-2); color: var(--muted); }
.field.invalid input, .field.invalid select { border-color: var(--danger); }
.check { display: flex; align-items: center; gap: 8px; padding-top: 20px; font-size: 13px; }
.check input { width: 16px; height: 16px; }

.lines input { padding: 5px 7px; font-size: 13px; }
.lines td { padding: 4px 6px; }
.lines th { padding: 6px; }
.lines .w-xs { width: 70px; }
.lines .w-sm { width: 100px; }
.lines .w-md { width: 140px; }
.lines .w-lg { min-width: 220px; }
.totals { display: flex; justify-content: flex-end; padding: 12px 16px; border-top: 1px solid var(--border); }
.totals table td { padding: 3px 10px; }
.totals table td:last-child { text-align: right; font-variant-numeric: tabular-nums; min-width: 120px; }
.totals tr.grand td { font-weight: 700; font-size: 15px; border-top: 1px solid var(--border); padding-top: 6px; }
.totals input { width: 120px; text-align: right; padding: 4px 6px; }

/* ---------- Dashboard ---------- */
.kpis { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; margin-bottom: 16px; }
.kpi { padding: 14px 16px; display: block; color: inherit; }
.kpi:hover { text-decoration: none; border-color: var(--primary); }
.kpi .label { color: var(--muted); font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .03em; }
.kpi .value { font-size: 26px; font-weight: 600; margin: 6px 0 2px; font-variant-numeric: tabular-nums; }
.kpi .meta { color: var(--muted); font-size: 12px; }
.dash-cols { display: grid; grid-template-columns: 3fr 2fr; gap: 16px; }
.dash-cols .card + .card, .kpis .card + .card { margin-top: 0; }
.dash-cols > * { min-width: 0; }
.endpoints { list-style: none; margin: 0; padding: 0; }
.endpoints li { padding: 8px 0; border-bottom: 1px solid #edf1f5; display: flex; justify-content: space-between; gap: 10px; }
.endpoints li:last-child { border-bottom: 0; }
.endpoints code { font-size: 12px; }
.muted { color: var(--muted); }

/* ---------- Unavailable ---------- */
.unavailable { text-align: center; padding: 60px 20px; color: var(--muted); }
.unavailable .big { font-size: 40px; margin-bottom: 10px; }

/* ---------- Toasts ---------- */
.toast-host { position: fixed; right: 20px; bottom: 20px; display: flex; flex-direction: column; gap: 8px; z-index: 50; }
.toast { background: #1d2733; color: #fff; padding: 10px 14px; border-radius: 6px; box-shadow: 0 6px 20px rgba(0,0,0,.18); font-size: 13px; max-width: 360px; animation: toast-in .15s ease-out; }
.toast.error { background: var(--danger); }
.toast.success { background: var(--success); }
@keyframes toast-in { from { transform: translateY(8px); opacity: 0; } to { transform: none; opacity: 1; } }

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .kpis { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .dash-cols { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  .menu-toggle { display: inline-block; }
  .sidebar { position: fixed; left: 0; top: 52px; z-index: 30; transform: translateX(-100%); transition: transform .2s; }
  body.nav-open .sidebar { transform: none; }
  .content { padding: 0 16px 32px; }
  .demo-banner { margin: 0 -16px 16px; padding: 7px 16px; }
  .company, .user-name, .brand-text small { display: none; }
  .kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .form-grid { grid-template-columns: 1fr; }
  .field.span-2 { grid-column: auto; }
  .toolbar input[type=search] { width: 100%; }
}
.totals { flex-wrap: wrap; }
.totals .tax-note { flex-basis: 100%; text-align: right; margin: 6px 10px 0; font-size: 11px; color: var(--muted); }

.muted { color: #94a3b8; }