:root {
  --ink: #18221f;
  --muted: #6b7772;
  --line: #dfe8e2;
  --paper: #f7faf6;
  --white: #ffffff;
  --green: #176b50;
  --green-dark: #0e4c3a;
  --mint: #d9f0e4;
  --amber: #c17a19;
  --amber-bg: #fff3dc;
  --red: #bd4438;
  --red-bg: #ffebe7;
  --shadow: 0 18px 50px rgba(24, 52, 39, .08);
}
* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; color: var(--ink); background: var(--paper); font-family: Cairo, sans-serif; }
button, input, select { font: inherit; }
button { border: 0; cursor: pointer; }
select { width: 100%; padding: 13px 15px; border: 1px solid var(--line); border-radius: 10px; outline: none; background: white; color: var(--ink); }
.hidden { display: none !important; }
.login-shell { min-height: 100vh; display: grid; grid-template-columns: 1.05fr .95fr; background: #eef6f0; }
.login-art { position: relative; overflow: hidden; padding: 58px 8vw 48px; color: white; background: linear-gradient(145deg, #0e4c3a 0%, #176b50 55%, #2c8768 100%); }
.login-art:after { content: ''; position: absolute; width: 440px; height: 440px; border: 1px solid rgba(255,255,255,.16); border-radius: 50%; left: -160px; bottom: -160px; box-shadow: 0 0 0 42px rgba(255,255,255,.04), 0 0 0 84px rgba(255,255,255,.03); }
.brand { display: flex; gap: 12px; align-items: center; font-size: 1.3rem; font-weight: 800; letter-spacing: -.5px; }
.brand-mark { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 12px; background: #e6f5eb; color: var(--green); font-weight: 800; }
.login-copy { position: relative; z-index: 1; max-width: 500px; margin-top: 18vh; }
.login-copy h1 { margin: 0 0 18px; font-size: clamp(2rem, 4vw, 4rem); line-height: 1.15; letter-spacing: -2px; }
.login-copy p { max-width: 430px; margin: 0; color: #cce7d7; font-size: 1.05rem; line-height: 2; }
.login-points { display: grid; gap: 12px; margin-top: 42px; color: #e2f3e8; }
.login-points span { display: flex; align-items: center; gap: 10px; }
.login-points b { display: grid; place-items: center; width: 24px; height: 24px; border: 1px solid rgba(255,255,255,.35); border-radius: 50%; font-size: .75rem; }
.login-panel { display: grid; place-items: center; padding: 30px; background: #fbfdfb; }
.login-card { width: min(100%, 410px); }
.login-card h2 { margin: 0 0 8px; font-size: 1.8rem; }
.login-card .lead { margin: 0 0 32px; color: var(--muted); }
.field { display: grid; gap: 8px; margin-bottom: 18px; }
.field label { color: #47534d; font-size: .9rem; font-weight: 700; }
.field input { width: 100%; padding: 13px 15px; border: 1px solid var(--line); border-radius: 10px; outline: none; background: white; color: var(--ink); transition: .2s; }
.field input:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(23,107,80,.12); }
.primary { width: 100%; padding: 13px 18px; border-radius: 10px; color: #fff; background: var(--green); font-weight: 700; transition: .2s; }
.primary:hover { background: var(--green-dark); transform: translateY(-1px); }
.demo-hint { margin: 18px 0 0; padding: 11px 12px; border-radius: 9px; color: #526158; background: #eef6f0; text-align: center; font-size: .82rem; }
.error { min-height: 22px; margin: 8px 0; color: var(--red); font-size: .84rem; }
.app-shell { min-height: 100vh; }
.topbar { display: flex; align-items: center; justify-content: space-between; padding: 18px 5vw; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.86); backdrop-filter: blur(10px); }
.topbar .brand-mark { background: var(--mint); }
.topbar-actions { display: flex; align-items: center; gap: 20px; }
.shop-picker { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: .82rem; }
.shop-picker select { min-width: 150px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); color: var(--ink); padding: 8px 10px; font: inherit; }
.user-chip { display: flex; align-items: center; gap: 9px; color: var(--muted); font-size: .9rem; }
@media (max-width: 500px) { .content { width: 92%; padding-top: 28px; } .topbar-actions { gap: 8px; } .shop-picker select { min-width: 120px; } .user-chip span { display: none; } .form-grid { grid-template-columns: 1fr; } .modal .field.full { grid-column: auto; } .modal { padding: 14px; } }
.avatar { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; background: var(--green-dark); color: white; font-size: .8rem; }
.ghost { padding: 8px 13px; border: 1px solid var(--line); border-radius: 8px; color: var(--muted); background: white; }
.ghost:hover { color: var(--red); border-color: #efc4be; }
.content { width: min(1180px, 90%); margin: 0 auto; padding: 40px 0 70px; }
.page-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 28px; }
.eyebrow { margin: 0 0 7px; color: var(--green); font-size: .78rem; font-weight: 800; letter-spacing: 1.6px; }
.page-heading h1 { margin: 0; font-size: clamp(1.7rem, 3vw, 2.6rem); letter-spacing: -1px; }
.page-heading p { margin: 8px 0 0; color: var(--muted); }
.action-stack { display: flex; gap: 10px; flex-wrap: wrap; }
.add-button { padding: 12px 19px; border-radius: 9px; color: white; background: var(--green); font-weight: 700; white-space: nowrap; }
.add-button:hover { background: var(--green-dark); }
.secondary-button { padding: 12px 19px; border: 1px solid var(--green); border-radius: 9px; color: var(--green); background: white; font-weight: 700; white-space: nowrap; }
.secondary-button:hover { background: #edf8f1; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 26px; }
.stat { padding: 20px; border: 1px solid var(--line); border-radius: 12px; background: white; box-shadow: var(--shadow); }
.stat p { margin: 0 0 8px; color: var(--muted); font-size: .85rem; }
.stat strong { font-family: 'DM Mono', monospace; font-size: 1.65rem; }
.stat.alert strong { color: var(--amber); }
.report-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin: 0 0 26px; }
.report-card { display: grid; gap: 8px; padding: 18px 20px; border: 1px solid var(--line); border-radius: 12px; background: linear-gradient(180deg, #ffffff 0%, #f4fbf5 100%); box-shadow: var(--shadow); }
.report-card span { color: var(--muted); font-size: .8rem; }
.report-card strong { font-size: 1.35rem; font-family: 'DM Mono', monospace; }
.report-card small { color: var(--green); font-weight: 700; }
.invoice-modal { max-width: 490px; }
.invoice-box { padding: 10px 6px; }
.invoice-meta { display: flex; justify-content: space-between; gap: 18px; margin-bottom: 18px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.invoice-meta span { display: block; color: var(--muted); font-size: .76rem; margin-bottom: 4px; }
.invoice-table { width: 100%; border-collapse: collapse; }
.invoice-table th, .invoice-table td { padding: 12px 10px; border-bottom: 1px solid #edf2ee; text-align: center; }
.invoice-table thead th { background: #f8fbf8; color: var(--muted); }
.invoice-total { display: flex; justify-content: space-between; gap: 18px; margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--line); font-size: .96rem; }
.empty-cell { padding: 18px; color: var(--muted); }
.alert-box { display: flex; align-items: center; gap: 14px; margin-bottom: 25px; padding: 15px 18px; border: 1px solid #f1d295; border-radius: 10px; color: #805314; background: var(--amber-bg); }
.alert-icon { display: grid; place-items: center; flex: 0 0 31px; height: 31px; border-radius: 50%; background: #f5cf7b; font-weight: 800; }
.alert-box p { margin: 0; font-size: .9rem; }
.table-section { border: 1px solid var(--line); border-radius: 12px; background: white; box-shadow: var(--shadow); overflow: hidden; }
.sales-panel { margin-top: 26px; }
.table-head { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 20px 22px; border-bottom: 1px solid var(--line); }
.table-head h2 { margin: 0; font-size: 1.1rem; }
.search { width: min(100%, 260px); padding: 10px 13px; border: 1px solid var(--line); border-radius: 8px; outline: none; }
.search:focus { border-color: var(--green); }
.sales-total { color: var(--muted); font-size: .86rem; font-weight: 700; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 700px; }
th { padding: 14px 22px; color: var(--muted); background: #f8fbf8; font-size: .78rem; font-weight: 700; text-align: right; }
td { padding: 17px 22px; border-top: 1px solid #edf2ee; font-size: .9rem; }
.product-name { font-weight: 700; }
.sku { color: var(--muted); font-family: 'DM Mono', monospace; font-size: .78rem; }
.price { font-family: 'DM Mono', monospace; font-weight: 500; }
.stock { display: inline-flex; align-items: center; gap: 7px; }
.stock:before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: var(--green); }
.stock.low { color: var(--red); font-weight: 700; }
.stock.low:before { background: var(--red); }
.row-actions { display: flex; gap: 7px; }
.action { padding: 7px 10px; border: 1px solid var(--line); border-radius: 7px; color: var(--muted); background: white; font-size: .78rem; }
.action:hover { color: var(--green); border-color: #afd0be; }
.action.delete:hover { color: var(--red); border-color: #efc4be; }
.empty { padding: 52px 20px; color: var(--muted); text-align: center; }
.modal-backdrop { position: fixed; inset: 0; z-index: 10; display: grid; place-items: center; overflow-y: auto; padding: 20px; background: rgba(12, 37, 28, .42); }
.modal { width: min(100%, 371px); margin-block: auto; padding: 18px; border-radius: 14px; background: white; box-shadow: 0 24px 70px rgba(0,0,0,.2); }
.modal-head { display: flex; justify-content: space-between; align-items: start; margin-bottom: 17px; }
.modal h2 { margin: 0; font-size: 1.3rem; }
.close { width: 30px; height: 30px; border-radius: 50%; color: var(--muted); background: #f1f5f1; font-size: 1.2rem; }
.modal .field { margin-bottom: 13px; }
.modal .field input, .modal select { padding: 10px 12px; }
.modal .primary { padding: 10px 14px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 14px; }
.modal .field.full { grid-column: 1 / -1; }
.modal-actions { display: flex; justify-content: end; gap: 8px; margin-top: 9px; }
.modal-actions .primary { width: auto; }
.main-nav { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: center; }
.nav-btn { padding: 9px 14px; border-radius: 8px; color: var(--muted); background: transparent; border: 1px solid transparent; font-weight: 700; }
.nav-btn.active { background: var(--mint); color: var(--green-dark); border-color: #c7e6d2; }
.panel-section { display: grid; gap: 20px; }
.panel-head { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 20px 22px; border: 1px solid var(--line); border-radius: 12px; background: white; box-shadow: var(--shadow); }
.panel-head h2 { margin: 0; font-size: 1.25rem; }
.report-grid-full { margin-bottom: 0; }
.cash-session-filters { display: flex; gap: 10px; align-items: center; }
.cash-session-filters select { width: auto; min-width: 145px; padding: 10px 12px; }
.cash-session-pagination { display: flex; align-items: center; justify-content: space-between; padding: 14px 20px; color: var(--muted); font-size: .86rem; }
.cash-session-pagination > div { display: flex; gap: 8px; }
.cash-session-pagination .action:disabled { opacity: .45; cursor: not-allowed; }
.cash-session-status { display: inline-flex; padding: 4px 9px; border-radius: 5px; font-size: .8rem; font-weight: 700; white-space: nowrap; }
.status-open { color: #116246; background: #e5f5eb; }
.status-balanced { color: #245d89; background: #e7f1fa; }
.status-unbalanced { color: #a33e31; background: #ffebe7; }
.cash-reconciliation { margin: 0 0 20px; padding: 14px; border: 1px solid var(--line); border-radius: 8px; background: #f8fbf8; }
.cash-session-details p { display: flex; justify-content: space-between; gap: 16px; margin: 0; padding: 12px 0; border-bottom: 1px solid var(--line); }
.cash-session-details p span { color: var(--muted); }
.invoice-profile-modal, .invoice-editor-modal { width: min(100%, 560px); max-width: 560px; }
.invoice-profile-modal .form-grid, .invoice-editor-modal .form-grid { gap: 0 10px; }
.invoice-toggle { display: flex; align-items: center; gap: 10px; margin: 10px 0 16px; color: var(--muted); font-size: .88rem; }
.invoice-toggle input { width: 17px; height: 17px; accent-color: var(--green); }
.invoice-lines-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin: 12px 0; }
.invoice-lines-head h3, .invoice-buyer-fields h3 { margin: 0; font-size: 1rem; }
.invoice-editor-line { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 12px; align-items: end; padding: 12px; margin-bottom: 10px; border: 1px solid var(--line); border-radius: 8px; background: #fbfdfb; }
.invoice-editor-line .field { margin: 0; }
.invoice-line-numbers { display: flex; align-items: end; gap: 8px; }
.invoice-line-numbers label { display: grid; gap: 6px; color: var(--muted); font-size: .8rem; }
.invoice-line-numbers input { width: 88px; padding: 8px; border: 1px solid var(--line); border-radius: 7px; }
.invoice-buyer-fields { padding: 12px; margin: 12px 0; border: 1px solid var(--line); border-radius: 8px; }
.invoice-buyer-fields h3 { margin-bottom: 12px; }
.invoice-calculation { display: grid; gap: 8px; padding: 12px 0; }
.invoice-calculation > div, .invoice-totals-view > div { display: flex; justify-content: space-between; gap: 14px; }
.invoice-calculation-total { padding-top: 9px; border-top: 1px solid var(--line); font-weight: 800; }
.invoice-lines-view, .invoice-totals-view { display: grid; gap: 9px; padding: 13px 0; border-top: 1px solid var(--line); }
.invoice-lines-view > div { display: flex; justify-content: space-between; gap: 12px; }
.invoice-party { display: grid; gap: 4px; margin: 10px 0; }
.invoice-party > span, .invoice-party > small { color: var(--muted); font-size: .82rem; }
.invoice-qr { display: grid; justify-items: center; gap: 5px; padding: 12px; border-top: 1px solid var(--line); }
.invoice-qr img { width: 160px; height: 160px; image-rendering: pixelated; }
.invoice-qr span, .invoice-integration-state { color: var(--muted); font-size: .78rem; text-align: center; }
.invoice-integration-state { margin: 0; }
@media (max-width: 600px) { .cash-session-filters { width: 100%; flex-direction: column; align-items: stretch; } .cash-session-filters select { width: 100%; } .cash-session-pagination { gap: 12px; flex-wrap: wrap; } }
@media (max-width: 800px) { .login-shell { grid-template-columns: 1fr; } .login-art { min-height: 330px; padding: 30px 8vw; } .login-copy { margin-top: 55px; } .login-copy h1 { font-size: 2.2rem; } .login-points { display: none; } .login-panel { padding: 44px 8vw 60px; } .topbar { flex-direction: column; gap: 16px; } .main-nav { width: 100%; justify-content: center; } .page-heading { align-items: start; flex-direction: column; } .action-stack { width: 100%; } .add-button, .secondary-button { flex: 1 1 180px; } .stats, .report-grid { grid-template-columns: 1fr 1fr; } .invoice-meta, .invoice-total { flex-direction: column; } .table-head { align-items: stretch; flex-direction: column; } .search { width: 100%; } }
@media (max-width: 500px) { .content { width: 92%; padding-top: 28px; } .stats, .report-grid { grid-template-columns: 1fr; } .topbar-actions { width: 100%; justify-content: center; flex-wrap: wrap; } .panel-head { flex-direction: column; align-items: stretch; } }

@media print {
  body * { visibility: hidden; }
  .invoice-modal, .invoice-modal * { visibility: visible; }
  .invoice-modal { position: absolute; inset: 0; width: 100%; max-width: none; box-shadow: none; border: none; }
  .modal-actions, .close { display: none !important; }
}
@media (max-width: 500px) { .content { width: 92%; padding-top: 28px; } .topbar { padding: 14px 4%; } .topbar-actions { gap: 8px; } .user-chip span { display: none; } .form-grid { grid-template-columns: 1fr; } .modal .field.full { grid-column: auto; } .modal { padding: 14px; } }
@media (max-width: 500px) { .invoice-editor-line { grid-template-columns: 1fr; } .invoice-line-numbers { justify-content: space-between; } .invoice-profile-modal, .invoice-editor-modal { max-width: 100%; } }