:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-2: #f8fafc;
  --text: #172033;
  --muted: #6b768a;
  --line: #e4eaf2;
  --brand: #3155d9;
  --brand-2: #223ea8;
  --brand-soft: #eef2ff;
  --success: #0f9d72;
  --success-soft: #e8f8f2;
  --warning: #c37a0a;
  --warning-soft: #fff5df;
  --danger: #d54848;
  --danger-soft: #fff0f0;
  --info: #2774cc;
  --info-soft: #edf6ff;
  --sidebar: #111827;
  --sidebar-2: #182235;
  --shadow: 0 14px 40px rgba(30, 47, 76, .08);
  --radius: 16px;
  --radius-sm: 10px;
  --sidebar-w: 252px;
  --topbar-h: 72px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--text); }
body { font-size: 14px; line-height: 1.5; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }
[hidden] { display: none !important; }

.page-loader { position: fixed; inset: 0; z-index: 9999; background: rgba(244,247,251,.94); display: grid; place-items: center; transition: opacity .2s ease; }
.page-loader.is-hidden { opacity: 0; pointer-events: none; }
.loader-card { display: grid; gap: 14px; justify-items: center; color: var(--muted); }
.spinner { width: 26px; height: 26px; border: 3px solid #dce4f1; border-top-color: var(--brand); border-radius: 50%; animation: spin .72s linear infinite; }
.spinner.sm { width: 16px; height: 16px; border-width: 2px; }
@keyframes spin { to { transform: rotate(360deg); } }

.app-shell { min-height: 100vh; }
.sidebar { position: fixed; inset: 0 auto 0 0; width: var(--sidebar-w); background: linear-gradient(180deg,var(--sidebar),#0d1421); color: #e5ebf5; z-index: 60; padding: 22px 14px; display: flex; flex-direction: column; }
.brand { display: flex; align-items: center; gap: 11px; padding: 0 10px 22px; border-bottom: 1px solid rgba(255,255,255,.08); }
.brand-mark { width: 38px; height: 38px; border-radius: 12px; background: linear-gradient(135deg,#6f8cff,#3155d9); display: grid; place-items: center; color: white; font-weight: 800; box-shadow: 0 7px 20px rgba(49,85,217,.35); }
.brand strong { display: block; font-size: 15px; letter-spacing: .01em; }
.brand small { display: block; color: #8fa0bb; font-size: 11px; margin-top: 1px; }
.nav-label { padding: 20px 12px 8px; color: #72839f; text-transform: uppercase; font-size: 10px; font-weight: 700; letter-spacing: .14em; }
.nav { overflow-y: auto; padding-bottom: 12px; }
.nav-link { display: flex; align-items: center; gap: 11px; padding: 10px 12px; margin: 3px 0; border-radius: 10px; color: #aebad0; transition: .16s ease; }
.nav-link:hover { background: rgba(255,255,255,.06); color: #fff; }
.nav-link.active { background: rgba(80,110,226,.2); color: #fff; box-shadow: inset 3px 0 #6f8cff; }
.nav-icon { width: 19px; height: 19px; display: grid; place-items: center; font-size: 16px; }
.sidebar-foot { margin-top: auto; border-top: 1px solid rgba(255,255,255,.08); padding: 14px 8px 0; }
.sidebar-user { display: flex; align-items: center; gap: 10px; }
.avatar { width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; background: #2c3850; color: #fff; font-weight: 700; }
.sidebar-user .meta { min-width: 0; }
.sidebar-user .name { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: 12px; font-weight: 650; }
.sidebar-user .role { color: #8393ad; font-size: 10px; text-transform: capitalize; }

.main { margin-left: var(--sidebar-w); min-height: 100vh; }
.topbar { height: var(--topbar-h); background: rgba(255,255,255,.88); backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 0 28px; position: sticky; top: 0; z-index: 50; }
.topbar-left { display: flex; align-items: center; gap: 12px; min-width: 0; }
.mobile-menu { display:none; }
.page-heading { min-width: 0; }
.page-heading h1 { font-size: 20px; line-height: 1.1; margin: 0; font-weight: 720; }
.page-heading p { margin: 4px 0 0; color: var(--muted); font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.topbar-actions { display:flex; align-items:center; gap:9px; }
.content { padding: 28px; max-width: 1600px; margin: 0 auto; }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: 0 3px 16px rgba(31,45,70,.03); }
.card-header { display:flex; align-items:center; justify-content:space-between; gap:12px; padding: 18px 20px; border-bottom:1px solid var(--line); }
.card-header h2,.card-header h3 { margin:0; font-size:15px; }
.card-header p { margin:3px 0 0; color:var(--muted); font-size:12px; }
.card-body { padding:20px; }
.card-footer { padding:15px 20px; border-top:1px solid var(--line); display:flex; justify-content:flex-end; gap:9px; }
.grid { display:grid; gap:18px; }
.grid.cols-2 { grid-template-columns: repeat(2,minmax(0,1fr)); }
.grid.cols-3 { grid-template-columns: repeat(3,minmax(0,1fr)); }
.grid.cols-4 { grid-template-columns: repeat(4,minmax(0,1fr)); }
.stack { display:flex; flex-direction:column; gap:18px; }
.row { display:flex; align-items:center; gap:10px; flex-wrap:wrap; }
.row.between { justify-content:space-between; }

.stat { padding:20px; position:relative; overflow:hidden; }
.stat-label { color:var(--muted); font-size:12px; font-weight:600; }
.stat-value { font-size:28px; line-height:1.2; margin-top:8px; font-weight:760; letter-spacing:-.03em; }
.stat-note { color:var(--muted); font-size:11px; margin-top:6px; }
.stat-icon { position:absolute; right:18px; top:18px; width:38px; height:38px; border-radius:12px; background:var(--brand-soft); color:var(--brand); display:grid; place-items:center; font-size:18px; }

.btn { border:1px solid transparent; border-radius:10px; min-height:38px; padding:8px 14px; display:inline-flex; align-items:center; justify-content:center; gap:8px; font-weight:650; transition:.15s ease; white-space:nowrap; }
.btn:hover { transform: translateY(-1px); }
.btn:disabled { opacity:.55; cursor:not-allowed; transform:none; }
.btn-primary { background:var(--brand); color:white; box-shadow:0 5px 15px rgba(49,85,217,.2); }
.btn-primary:hover { background:var(--brand-2); }
.btn-secondary { background:#fff; color:var(--text); border-color:var(--line); }
.btn-secondary:hover { background:var(--surface-2); }
.btn-danger { background:var(--danger); color:white; }
.btn-ghost { background:transparent; color:var(--muted); }
.btn-sm { min-height:32px; padding:5px 10px; border-radius:8px; font-size:12px; }
.icon-btn { width:38px; height:38px; padding:0; border:1px solid var(--line); border-radius:10px; background:#fff; display:grid; place-items:center; }

.field { display:flex; flex-direction:column; gap:6px; min-width:0; }
.field label { color:#4e5b70; font-size:11px; font-weight:700; }
.field-hint { color:var(--muted); font-size:11px; }
.input,.select,.textarea { width:100%; border:1px solid #d9e0eb; background:#fff; color:var(--text); border-radius:10px; min-height:40px; padding:9px 11px; outline:none; transition:.15s ease; }
.textarea { min-height:90px; resize:vertical; }
.input:focus,.select:focus,.textarea:focus { border-color:#8ca0ef; box-shadow:0 0 0 3px rgba(49,85,217,.09); }
.input-search { padding-left:36px; }
.search-wrap { position:relative; min-width:220px; }
.search-wrap:before { content:'\2315'; position:absolute; left:12px; top:8px; color:#8b97aa; font-size:18px; }
.form-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px; }
.form-grid .span-2 { grid-column:span 2; }
.checkbox { display:flex; align-items:center; gap:8px; color:#4f5c70; }
.checkbox input { width:16px; height:16px; accent-color:var(--brand); }

.table-wrap { overflow:auto; border-radius:0 0 var(--radius) var(--radius); }
table { width:100%; border-collapse:collapse; min-width:720px; }
th { text-align:left; color:#6b768a; font-size:10px; text-transform:uppercase; letter-spacing:.08em; font-weight:750; background:#fbfcfe; padding:11px 14px; border-bottom:1px solid var(--line); white-space:nowrap; }
td { padding:12px 14px; border-bottom:1px solid #edf1f6; vertical-align:middle; }
tbody tr:hover { background:#fbfcff; }
tbody tr:last-child td { border-bottom:0; }
.cell-title { font-weight:650; }
.cell-sub { color:var(--muted); font-size:11px; margin-top:2px; }
.table-empty { text-align:center; color:var(--muted); padding:38px 16px; }
.table-actions { display:flex; justify-content:flex-end; gap:6px; }

.badge { display:inline-flex; align-items:center; min-height:24px; padding:3px 8px; border-radius:999px; font-size:10px; font-weight:750; text-transform:capitalize; background:#eef2f6; color:#5f6b7c; }
.badge.success,.badge.paid,.badge.completed,.badge.active,.badge.done { background:var(--success-soft); color:var(--success); }
.badge.warning,.badge.partial,.badge.in_progress,.badge.high { background:var(--warning-soft); color:var(--warning); }
.badge.danger,.badge.overdue,.badge.void,.badge.cancelled,.badge.urgent { background:var(--danger-soft); color:var(--danger); }
.badge.info,.badge.issued { background:var(--info-soft); color:var(--info); }
.badge.draft,.badge.pending,.badge.open,.badge.normal { background:var(--brand-soft); color:var(--brand); }

.toolbar { padding:14px 18px; border-bottom:1px solid var(--line); display:flex; align-items:center; justify-content:space-between; gap:12px; flex-wrap:wrap; }
.filters { display:flex; gap:9px; flex-wrap:wrap; align-items:center; }
.filters .select,.filters .input { width:auto; min-width:140px; }
.tabs { display:flex; gap:5px; padding:5px; border-radius:11px; background:#eef2f6; width:max-content; }
.tab { border:0; background:transparent; color:var(--muted); border-radius:8px; padding:7px 12px; font-size:12px; font-weight:650; }
.tab.active { background:#fff; color:var(--text); box-shadow:0 1px 4px rgba(28,43,66,.09); }

.modal-backdrop { position:fixed; inset:0; background:rgba(11,18,32,.46); backdrop-filter:blur(4px); z-index:200; display:none; align-items:center; justify-content:center; padding:20px; }
.modal-backdrop.show { display:flex; }
.modal { width:min(680px,100%); max-height:92vh; overflow:auto; background:#fff; border-radius:18px; box-shadow:0 30px 90px rgba(12,22,43,.25); animation:modalIn .16s ease; }
.modal.lg { width:min(980px,100%); }
@keyframes modalIn { from { transform:translateY(8px) scale(.99); opacity:.2; } }
.modal-header { padding:18px 20px; border-bottom:1px solid var(--line); display:flex; align-items:flex-start; justify-content:space-between; gap:12px; }
.modal-header h3 { margin:0; font-size:17px; }
.modal-header p { margin:3px 0 0; color:var(--muted); font-size:12px; }
.modal-body { padding:20px; }
.modal-footer { padding:14px 20px; border-top:1px solid var(--line); display:flex; justify-content:flex-end; gap:8px; position:sticky; bottom:0; background:#fff; }

.toast-wrap { position:fixed; right:20px; top:20px; z-index:500; display:grid; gap:9px; width:min(360px,calc(100vw - 40px)); }
.toast { background:#172033; color:#fff; border-radius:12px; padding:12px 14px; box-shadow:var(--shadow); display:flex; gap:10px; align-items:flex-start; animation:toastIn .2s ease; }
.toast.success { background:#116f58; }
.toast.error { background:#a93636; }
.toast .message { flex:1; }
@keyframes toastIn { from { transform:translateY(-6px); opacity:0; } }

.skeleton { position:relative; overflow:hidden; background:#edf1f6; border-radius:6px; color:transparent !important; }
.skeleton:after { content:''; position:absolute; inset:0; transform:translateX(-100%); background:linear-gradient(90deg,transparent,rgba(255,255,255,.75),transparent); animation:shine 1.2s infinite; }
@keyframes shine { to { transform:translateX(100%); } }

.login-page { min-height:100vh; display:grid; grid-template-columns:minmax(380px, 46%) 1fr; background:#fff; }
.login-panel { display:flex; align-items:center; justify-content:center; padding:48px; }
.login-box { width:min(420px,100%); }
.login-brand { display:flex; align-items:center; gap:12px; margin-bottom:42px; }
.login-brand .brand-mark { width:44px;height:44px; }
.login-box h1 { font-size:32px; letter-spacing:-.04em; margin:0 0 8px; }
.login-box > p { color:var(--muted); margin:0 0 28px; }
.login-form { display:grid; gap:16px; }
.login-side { background:radial-gradient(circle at 70% 25%,#526fe6 0,#2742b9 32%,#151f55 72%,#0f1639 100%); color:#fff; padding:60px; display:flex; align-items:flex-end; position:relative; overflow:hidden; }
.login-side:before,.login-side:after { content:''; position:absolute; border-radius:50%; border:1px solid rgba(255,255,255,.12); }
.login-side:before { width:520px;height:520px;right:-120px;top:-130px; }
.login-side:after { width:330px;height:330px;right:70px;top:80px; }
.login-copy { position:relative; z-index:1; max-width:560px; }
.login-copy h2 { font-size:38px; line-height:1.08; letter-spacing:-.04em; margin:0 0 16px; }
.login-copy p { color:#c7d2ff; font-size:15px; max-width:480px; }

.kpi-money { font-variant-numeric:tabular-nums; }
.amount-positive { color:var(--success); font-weight:650; }
.amount-negative { color:var(--danger); font-weight:650; }
.invoice-lines { border:1px solid var(--line); border-radius:12px; overflow:hidden; }
.invoice-line { display:grid; grid-template-columns:1fr 90px 120px 90px 42px; gap:8px; padding:10px; border-bottom:1px solid var(--line); align-items:center; }
.invoice-line:last-child { border-bottom:0; }
.invoice-total { margin-left:auto; width:min(340px,100%); display:grid; gap:8px; }
.invoice-total > div { display:flex; justify-content:space-between; }
.invoice-total .grand { border-top:1px solid var(--line); padding-top:10px; font-size:17px; font-weight:750; }

.day-list { display:grid; gap:9px; }
.event-item { display:flex; gap:12px; padding:13px 14px; border:1px solid var(--line); border-radius:12px; align-items:flex-start; }
.event-date { min-width:52px; text-align:center; background:var(--brand-soft); color:var(--brand); border-radius:10px; padding:7px 4px; }
.event-date strong { display:block; font-size:18px; line-height:1; }
.event-date span { font-size:10px; text-transform:uppercase; }

@media (max-width: 1100px) {
  .grid.cols-4 { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .grid.cols-3 { grid-template-columns:repeat(2,minmax(0,1fr)); }
}
@media (max-width: 860px) {
  .sidebar { transform:translateX(-100%); transition:.2s ease; box-shadow:20px 0 50px rgba(0,0,0,.18); }
  body.nav-open .sidebar { transform:translateX(0); }
  .main { margin-left:0; }
  .mobile-menu { display:grid; }
  .content { padding:18px; }
  .topbar { padding:0 18px; }
  .login-page { grid-template-columns:1fr; }
  .login-side { display:none; }
  .login-panel { padding:28px; }
}
@media (max-width: 620px) {
  .grid.cols-2,.grid.cols-3,.grid.cols-4,.form-grid { grid-template-columns:1fr; }
  .form-grid .span-2 { grid-column:auto; }
  .topbar-actions .hide-mobile { display:none; }
  .page-heading p { display:none; }
  .invoice-line { grid-template-columns:1fr 70px 90px; }
  .invoice-line .tax-cell,.invoice-line .remove-cell { grid-column:auto; }
}
@media print {
  .sidebar,.topbar,.toolbar,.btn,.no-print { display:none !important; }
  .main { margin:0; }
  .content { padding:0; max-width:none; }
  .card { box-shadow:none; border:0; }
}

.activity-list { display:grid; gap:10px; }
.activity-item { display:grid; grid-template-columns:14px 1fr; gap:10px; padding:12px 0; border-bottom:1px solid var(--line); }
.activity-item:last-child { border-bottom:0; }
.activity-dot { width:9px; height:9px; margin-top:6px; border-radius:50%; background:var(--brand); box-shadow:0 0 0 4px var(--brand-soft); }
.invoice-paper { max-width:980px; margin:0 auto; }
@media print { .invoice-paper { max-width:none; } }

/* Persistent-shell navigation: sidebar/topbar remain mounted while only page content changes. */
.nav-progress { position:absolute; left:0; right:0; bottom:-1px; height:2px; overflow:hidden; pointer-events:none; opacity:0; transition:opacity .12s ease; }
.nav-progress span { display:block; width:34%; height:100%; background:var(--brand); transform:translateX(-110%); }
.nav-progress.show { opacity:1; }
.nav-progress.show span { animation:navProgress 1s ease-in-out infinite; }
@keyframes navProgress { 0% { transform:translateX(-110%); } 55% { transform:translateX(170%); } 100% { transform:translateX(310%); } }
body.app-navigating #pageContent { opacity:.72; pointer-events:none; transition:opacity .12s ease; }
#pageContent { transition:opacity .12s ease; }

/* Multi-tenant/system-owner shell */
.owner-context { margin: 12px 8px 0; padding: 8px 10px; border: 1px solid rgba(255,255,255,.12); border-radius: 9px; background: rgba(255,183,77,.10); color: #f6c56e; font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; }
.login-help { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }
.corp-code { display:inline-flex; align-items:center; padding:3px 7px; border-radius:7px; background:var(--surface-2); border:1px solid var(--line); font-family:ui-monospace,SFMono-Regular,Consolas,monospace; font-size:11px; }
.subscription-meta { display:flex; gap:6px; flex-wrap:wrap; margin-top:4px; }
.section-title { margin: 8px 0 12px; padding-bottom: 8px; border-bottom: 1px solid var(--line); color: var(--text); font-size: 12px; font-weight: 750; text-transform: uppercase; letter-spacing: .08em; }
.section-title:not(:first-child) { margin-top: 24px; }