:root {
  --navy-950: #0b1f33;
  --navy-900: #102a43;
  --navy-700: #243b53;
  --slate-600: #486581;
  --slate-400: #829ab1;
  --slate-100: #f0f4f8;
  --white: #ffffff;
  --orange: #ef8354;
  --orange-dark: #c95d32;
  --teal: #2cb1bc;
  --green: #2f855a;
  --yellow: #b7791f;
  --red: #c53030;
  --shadow: 0 10px 30px rgba(16, 42, 67, 0.08);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--navy-900);
  background: #f7f9fb;
}

* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; background: #f7f9fb; }
button, input { font: inherit; }
button { cursor: pointer; }

.login-screen { display: grid; place-items: center; min-height: 100vh; padding: 24px; background: radial-gradient(circle at top right, #1f526f 0, transparent 36%), linear-gradient(135deg, var(--navy-950), var(--navy-900)); }
.login-card { width: min(420px, 100%); padding: 34px; border: 1px solid rgba(255,255,255,0.12); border-radius: 22px; color: var(--white); background: rgba(255,255,255,0.08); box-shadow: 0 25px 70px rgba(0,0,0,0.22); backdrop-filter: blur(12px); }
.login-card .brand-mark { margin-bottom: 24px; }
.login-card h1 { margin: 7px 0 8px; font-size: 1.7rem; letter-spacing: -0.04em; }
.login-copy { margin: 0 0 25px; color: #d9e2ec; font-size: 0.86rem; line-height: 1.5; }
.login-form { display: grid; gap: 8px; }
.login-form label { margin-top: 6px; color: #d9e2ec; font-size: 0.76rem; font-weight: 800; }
.login-form select, .login-form input { width: 100%; min-height: 43px; padding: 10px 12px; border: 1px solid rgba(255,255,255,0.24); border-radius: 10px; outline: 0; color: var(--navy-900); background: var(--white); }
.login-form select:focus, .login-form input:focus { border-color: var(--orange); box-shadow: 0 0 0 3px rgba(239,131,84,0.2); }
.login-form .primary-button { margin-top: 14px; }
.login-error { min-height: 18px; margin: 3px 0 0; color: #fed7d7; font-size: 0.74rem; }
.login-note { margin: 22px 0 0; color: #9fb3c8; font-size: 0.7rem; line-height: 1.5; }

.app-shell { min-height: 100vh; }
.topbar { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 22px 5vw; color: var(--white); background: linear-gradient(120deg, var(--navy-950), var(--navy-900)); }
.brand { display: flex; align-items: center; gap: 13px; }
.brand-mark { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 12px; color: var(--navy-950); background: var(--orange); font-weight: 900; letter-spacing: -1px; }
.brand h1 { margin: 0; font-size: 1.05rem; letter-spacing: -0.02em; }
.brand p { margin: 3px 0 0; color: #b7c9d9; font-size: 0.8rem; }
.topbar-status { display: flex; align-items: center; gap: 8px; color: #d9e2ec; font-size: 0.82rem; }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: #68d391; box-shadow: 0 0 0 4px rgba(104, 211, 145, 0.14); }
.logout-button { padding: 6px 9px; border: 1px solid rgba(255,255,255,0.18); border-radius: 7px; color: #d9e2ec; background: transparent; font-size: 0.72rem; font-weight: 800; }
.logout-button:hover { color: var(--white); border-color: var(--orange); }

.main-nav { display: flex; gap: 5px; padding: 0 5vw; background: var(--navy-900); border-top: 1px solid rgba(255,255,255,0.08); }
.nav-button { padding: 13px 17px; border: 0; color: #b7c9d9; background: transparent; border-bottom: 3px solid transparent; font-weight: 700; }
.nav-button:hover, .nav-button.active { color: var(--white); border-bottom-color: var(--orange); }

main { width: min(1480px, 90vw); margin: 0 auto; padding: 30px 0 60px; }
.view { display: none; }
.view.active { display: block; }
.section-heading { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 22px; }
.section-heading h2 { margin: 2px 0 0; color: var(--navy-950); font-size: clamp(1.5rem, 2vw, 2.05rem); letter-spacing: -0.035em; }
.eyebrow { margin: 0; color: var(--teal); text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.68rem; font-weight: 800; }
.panel { border: 1px solid #d9e2ec; border-radius: 18px; background: var(--white); box-shadow: var(--shadow); }
.panel-heading { display: flex; justify-content: space-between; align-items: flex-start; gap: 18px; padding: 22px 23px 16px; }
.panel-heading h3, .order-heading h3, .catalog-toolbar h3 { margin: 0; color: var(--navy-900); font-size: 1rem; }
.panel-heading p, .catalog-toolbar p { margin: 5px 0 0; color: var(--slate-600); font-size: 0.82rem; }

.badge { display: inline-flex; align-items: center; min-height: 30px; padding: 6px 10px; border-radius: 999px; font-size: 0.72rem; font-weight: 800; white-space: nowrap; }
.badge-warning { color: #975a16; background: #fffaf0; border: 1px solid #f6e05e; }
.badge-success { color: #276749; background: #f0fff4; border: 1px solid #9ae6b4; }
.badge-neutral { color: var(--slate-600); background: var(--slate-100); }

.workspace-grid { display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(320px, 0.85fr); gap: 22px; align-items: start; }
.sales-panel { min-height: 650px; }
.channel-list { display: grid; grid-template-columns: repeat(5, minmax(80px, 1fr)); gap: 9px; padding: 0 23px 22px; }
.channel-button { min-height: 64px; padding: 10px 7px; border: 1px solid #d9e2ec; border-radius: 12px; color: var(--navy-700); background: #f8fafc; text-align: center; font-weight: 800; font-size: 0.78rem; transition: 0.18s ease; }
.channel-button small { display: block; margin-top: 3px; color: var(--slate-400); font-weight: 600; font-size: 0.67rem; }
.channel-button:hover { border-color: var(--teal); transform: translateY(-1px); }
.channel-button.active { color: var(--white); border-color: var(--orange); background: var(--orange); box-shadow: 0 7px 14px rgba(239, 131, 84, 0.22); }
.channel-button.active small { color: #fff4ee; }
.channel-button.occupied:not(.active) { border-color: #fbd38d; background: #fffaf0; }

.catalog-toolbar { display: flex; justify-content: space-between; align-items: end; gap: 15px; padding: 21px 23px 15px; border-top: 1px solid #edf2f7; }
.category-tabs { display: flex; flex-wrap: wrap; gap: 6px; }
.category-tab { padding: 7px 10px; border: 0; border-radius: 999px; color: var(--slate-600); background: var(--slate-100); font-size: 0.72rem; font-weight: 800; }
.category-tab:hover, .category-tab.active { color: var(--white); background: var(--navy-700); }
.product-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; padding: 0 23px 25px; }
.product-card { display: flex; flex-direction: column; justify-content: space-between; min-height: 148px; padding: 15px; border: 1px solid #e5ebf1; border-radius: 14px; background: #fcfdfe; transition: 0.18s ease; }
.product-card-image { width: 100%; height: 105px; margin: -2px 0 12px; border-radius: 10px; object-fit: cover; background: #f0f4f8; }
.product-card:hover { border-color: var(--teal); box-shadow: 0 7px 20px rgba(44, 177, 188, 0.12); transform: translateY(-2px); }
.catalog-empty { grid-column: 1 / -1; min-height: 220px; }
.product-card h4 { margin: 0 0 5px; color: var(--navy-900); font-size: 0.9rem; }
.product-card p { margin: 0 0 13px; color: var(--slate-600); font-size: 0.73rem; line-height: 1.45; }
.product-meta { display: flex; justify-content: space-between; align-items: center; gap: 9px; }
.price { color: var(--orange-dark); font-size: 0.95rem; font-weight: 900; }
.add-button { width: 30px; height: 30px; padding: 0; border: 0; border-radius: 9px; color: var(--white); background: var(--navy-900); font-size: 1.1rem; line-height: 1; }
.add-button:hover { background: var(--teal); }
.add-button:disabled { cursor: not-allowed; opacity: 0.45; background: var(--slate-400); }
.stock-caption { display: block; margin-top: 3px; color: var(--slate-400); font-size: 0.66rem; }

.order-panel { position: sticky; top: 18px; min-height: 650px; padding: 22px; }
.order-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 15px; padding-bottom: 18px; border-bottom: 1px solid #edf2f7; }
.icon-button { width: 30px; height: 30px; border: 0; border-radius: 9px; color: var(--slate-600); background: var(--slate-100); font-size: 1.25rem; line-height: 1; }
.icon-button:hover { color: var(--red); background: #fff5f5; }
.order-items { min-height: 190px; max-height: 345px; overflow: auto; padding: 8px 0; }
.order-item { display: grid; grid-template-columns: 1fr auto; gap: 10px; padding: 13px 0; border-bottom: 1px solid #edf2f7; }
.order-item:last-child { border-bottom: 0; }
.order-item strong { display: block; color: var(--navy-900); font-size: 0.83rem; }
.order-item small { display: block; margin-top: 3px; color: var(--slate-600); font-size: 0.71rem; }
.qty-controls { display: flex; align-items: center; gap: 7px; margin-top: 8px; }
.qty-controls button { width: 23px; height: 23px; padding: 0; border: 1px solid #d9e2ec; border-radius: 6px; color: var(--navy-700); background: #fff; font-weight: 800; }
.qty-controls button:hover { border-color: var(--teal); color: var(--teal); }
.qty-controls span { min-width: 14px; text-align: center; font-size: 0.75rem; font-weight: 800; }
.order-item-total { color: var(--navy-900); font-size: 0.8rem; font-weight: 900; }
.empty-state { display: flex; min-height: 215px; flex-direction: column; align-items: center; justify-content: center; gap: 7px; color: var(--slate-600); text-align: center; font-size: 0.78rem; }
.empty-state strong { color: var(--navy-700); font-size: 0.88rem; }
.empty-icon { display: grid; place-items: center; width: 45px; height: 45px; margin-bottom: 3px; border-radius: 50%; color: var(--teal); background: #e6fffa; font-size: 1.6rem; }
.totals { padding: 17px 0; border-top: 1px solid #edf2f7; }
.totals > div { display: flex; justify-content: space-between; margin: 7px 0; color: var(--slate-600); font-size: 0.83rem; }
.totals .total-line { margin-top: 14px; color: var(--navy-950); font-size: 1.03rem; }
.payment-actions { display: grid; gap: 9px; }
.primary-button, .secondary-button, .danger-button { width: 100%; min-height: 42px; border: 0; border-radius: 10px; font-weight: 800; transition: 0.18s ease; }
.primary-button { color: var(--white); background: var(--orange); box-shadow: 0 7px 14px rgba(239, 131, 84, 0.18); }
.primary-button:hover { background: var(--orange-dark); transform: translateY(-1px); }
.secondary-button { color: var(--navy-900); border: 1px solid #b8e5e8; background: #edfeff; }
.secondary-button:hover { border-color: var(--teal); background: #d9f9fb; }
.danger-button { color: var(--red); border: 1px solid #fed7d7; background: #fff5f5; }
.danger-button:hover { background: #fee2e2; }
.helper-text { margin: 12px 0 0; color: var(--slate-400); font-size: 0.7rem; line-height: 1.45; text-align: center; }

.cash-layout { display: grid; grid-template-columns: minmax(260px, 0.75fr) minmax(0, 1.6fr); gap: 22px; align-items: start; }
.cash-control-panel { padding-bottom: 20px; }
.cash-form { display: grid; gap: 9px; padding: 0 23px 18px; }
.cash-form label { color: var(--navy-700); font-size: 0.8rem; font-weight: 800; }
.input-with-prefix { display: flex; align-items: center; overflow: hidden; border: 1px solid #cbd5e1; border-radius: 10px; background: #fff; }
.input-with-prefix span { padding-left: 12px; color: var(--slate-600); font-weight: 800; }
.input-with-prefix input { width: 100%; padding: 12px 10px; border: 0; outline: 0; color: var(--navy-900); }
.cash-open-summary { margin: 0 23px 13px; padding: 12px; border-radius: 10px; color: var(--green); background: #f0fff4; font-size: 0.76rem; line-height: 1.5; }
.closing-cash-field { display: grid; gap: 7px; margin: 0 23px 13px; color: var(--navy-700); font-size: 0.75rem; font-weight: 800; }
.closing-cash-field input { min-height: 40px; padding: 9px 10px; border: 1px solid #cbd5e1; border-radius: 9px; outline: 0; color: var(--navy-900); }
.security-note { margin: 18px 23px 0; color: var(--slate-400); font-size: 0.7rem; line-height: 1.45; }
.cash-control-panel .danger-button { width: calc(100% - 46px); margin: 0 23px; }
.text-button { margin: 20px 23px 0; padding: 0; border: 0; color: var(--slate-600); background: transparent; font-size: 0.74rem; text-decoration: underline; }
.text-button:hover { color: var(--red); }
.metric-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.metric-card { padding: 20px; border: 1px solid #d9e2ec; border-radius: 16px; background: var(--white); box-shadow: var(--shadow); }
.metric-card span, .metric-card small { display: block; color: var(--slate-600); font-size: 0.75rem; }
.metric-card strong { display: block; margin: 12px 0 6px; color: var(--navy-950); font-size: 1.45rem; letter-spacing: -0.03em; }
.history-panel { margin-top: 22px; }
.history-list { padding: 0 23px 15px; }
.history-row { display: grid; grid-template-columns: 1fr auto auto; gap: 15px; align-items: center; padding: 14px 0; border-top: 1px solid #edf2f7; }
.history-row strong { display: block; color: var(--navy-900); font-size: 0.82rem; }
.history-row small { display: block; margin-top: 4px; color: var(--slate-600); font-size: 0.71rem; }
.history-row .history-amount { color: var(--navy-900); font-weight: 900; font-size: 0.83rem; }
.payment-tag { padding: 4px 7px; border-radius: 6px; color: var(--navy-700); background: var(--slate-100); font-size: 0.67rem; font-weight: 800; }
.payment-tag.qr { color: #276749; background: #f0fff4; }

.catalog-panel, .inventory-panel { margin-bottom: 22px; }
.catalog-table, .inventory-table { overflow-x: auto; padding: 0 23px 22px; }
.product-form { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; align-items: end; padding: 0 23px 22px; border-bottom: 1px solid #edf2f7; }
.product-form label { display: grid; gap: 6px; color: var(--navy-700); font-size: 0.72rem; font-weight: 800; }
.product-form input, .product-form select { min-height: 40px; min-width: 0; padding: 9px 10px; border: 1px solid #cbd5e1; border-radius: 9px; outline: 0; color: var(--navy-900); background: var(--white); }
.product-form input:focus, .product-form select:focus { border-color: var(--teal); box-shadow: 0 0 0 3px rgba(44,177,188,0.13); }
.product-form .primary-button { min-height: 40px; }
.product-description-field { grid-column: span 2; }
.image-preview-wrap { display: flex; align-items: center; justify-content: center; min-height: 40px; padding: 4px; border: 1px dashed #b8c7d6; border-radius: 9px; color: var(--slate-400); font-size: 0.7rem; }
.image-preview { width: 58px; height: 42px; border-radius: 6px; object-fit: cover; }
.inventory-summary { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; padding: 0 23px 18px; }
.inventory-stat { padding: 13px 15px; border: 1px solid #e5ebf1; border-radius: 12px; background: #f8fafc; }
.inventory-stat span { display: block; color: var(--slate-600); font-size: 0.7rem; }
.inventory-stat strong { display: block; margin-top: 5px; color: var(--navy-900); font-size: 1.15rem; }
.inventory-stat small { display: block; margin-top: 4px; color: var(--slate-400); font-size: 0.66rem; }
.good-text, .stock-state.good { color: var(--green) !important; }
.danger-text, .stock-state.low { color: var(--red) !important; }
.inventory-movement-form { display: grid; grid-template-columns: 1.2fr 1fr 0.65fr 0.85fr 1.2fr auto; gap: 10px; align-items: end; padding: 0 23px 20px; border-bottom: 1px solid #edf2f7; }
.inventory-movement-form label { display: grid; gap: 6px; color: var(--navy-700); font-size: 0.72rem; font-weight: 800; }
.inventory-movement-form input, .inventory-movement-form select { min-height: 40px; min-width: 0; padding: 9px 10px; border: 1px solid #cbd5e1; border-radius: 9px; outline: 0; color: var(--navy-900); background: var(--white); }
.inventory-movement-form input:focus, .inventory-movement-form select:focus, .inventory-search:focus { border-color: var(--teal); box-shadow: 0 0 0 3px rgba(44,177,188,0.13); }
.inventory-movement-form .primary-button { min-width: 145px; min-height: 40px; }
.inventory-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 15px; padding: 18px 23px 12px; }
.inventory-filters { display: flex; flex-wrap: wrap; gap: 6px; }
.inventory-search { width: 230px; min-height: 37px; padding: 8px 10px; border: 1px solid #cbd5e1; border-radius: 9px; outline: 0; color: var(--navy-900); background: var(--white); font-size: 0.76rem; }
.data-table { width: 100%; border-collapse: collapse; font-size: 0.78rem; }
.data-table th { padding: 11px 10px; color: var(--slate-600); background: #f8fafc; font-size: 0.69rem; text-align: left; text-transform: uppercase; letter-spacing: 0.05em; }
.data-table td { padding: 13px 10px; border-bottom: 1px solid #edf2f7; vertical-align: top; }
.data-table td strong { color: var(--navy-900); }
.product-cell { display: flex; align-items: center; gap: 9px; min-width: 170px; }
.table-product-image, .table-product-placeholder { display: grid; place-items: center; width: 38px; height: 38px; flex: 0 0 38px; border-radius: 8px; object-fit: cover; color: var(--navy-900); background: #e6fffa; font-size: 0.68rem; font-weight: 900; }
.table-actions { display: flex; flex-wrap: wrap; gap: 6px; }
.table-action { padding: 6px 8px; border: 1px solid #d9e2ec; border-radius: 7px; color: var(--navy-700); background: #fff; font-size: 0.68rem; font-weight: 800; }
.table-action:hover { border-color: var(--teal); color: var(--teal); }
.table-action.delete { color: var(--red); border-color: #fed7d7; }
.table-action.delete:hover { background: #fff5f5; }
.recipe-list { max-width: 520px; color: var(--slate-600); line-height: 1.5; }
.cell-subtext { display: block; margin-top: 4px; color: var(--slate-400); font-size: 0.68rem; }
.inventory-value { font-weight: 900; color: var(--green); }
.inventory-value.low { color: var(--red); }
.stock-state { font-size: 0.72rem; font-weight: 800; }
.movement-history-wrap { padding: 0 23px 22px; }
.movement-history-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; padding: 15px 0 8px; border-top: 1px solid #edf2f7; }
.movement-history-heading h3 { margin: 0; color: var(--navy-900); font-size: 0.9rem; }
.movement-history-heading span { color: var(--slate-400); font-size: 0.7rem; }
.movement-row { display: grid; grid-template-columns: 1.2fr 1.5fr auto; gap: 14px; align-items: center; padding: 11px 0; border-top: 1px solid #edf2f7; font-size: 0.73rem; }
.movement-row strong, .movement-row small { display: block; }
.movement-row strong { color: var(--navy-900); }
.movement-row small, .movement-row span, .movement-row time { color: var(--slate-600); }
.movement-row time { white-space: nowrap; font-size: 0.67rem; }
.legend { display: flex; align-items: center; gap: 6px; color: var(--slate-600); font-size: 0.7rem; white-space: nowrap; }
.legend-dot { width: 8px; height: 8px; border-radius: 50%; }
.legend-dot.good { background: var(--green); }
.legend-dot.low { margin-left: 6px; background: var(--red); }
.hidden { display: none !important; }
.toast { position: fixed; right: 22px; bottom: 22px; z-index: 10; max-width: 340px; padding: 13px 15px; border-radius: 10px; color: var(--white); background: var(--navy-950); box-shadow: 0 15px 35px rgba(11,31,51,0.25); font-size: 0.8rem; opacity: 0; pointer-events: none; transform: translateY(12px); transition: 0.2s ease; }
.toast.show { opacity: 1; transform: translateY(0); }
.toast.warning { background: #975a16; }

@media (max-width: 1050px) {
  .workspace-grid, .cash-layout { grid-template-columns: 1fr; }
  .order-panel { position: static; min-height: auto; }
  .product-form { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 720px) {
  .topbar { padding: 18px 5vw; }
  .topbar-status { display: flex; }
  .topbar-status #session-user { display: none; }
  .main-nav { overflow-x: auto; padding: 0 5vw; }
  .nav-button { white-space: nowrap; }
  main { width: 92vw; padding-top: 23px; }
  .section-heading { align-items: flex-start; flex-direction: column; gap: 10px; }
  .channel-list { grid-template-columns: repeat(3, minmax(80px, 1fr)); padding-left: 15px; padding-right: 15px; }
  .catalog-toolbar { align-items: flex-start; flex-direction: column; padding-left: 15px; padding-right: 15px; }
  .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); padding-left: 15px; padding-right: 15px; }
  .panel-heading, .order-panel { padding-left: 15px; padding-right: 15px; }
  .metric-grid { grid-template-columns: 1fr 1fr; }
  .history-list, .catalog-table, .inventory-table { padding-left: 15px; padding-right: 15px; }
  .inventory-summary, .inventory-movement-form, .inventory-toolbar, .movement-history-wrap { padding-left: 15px; padding-right: 15px; }
  .product-form { padding-left: 15px; padding-right: 15px; }
  .inventory-movement-form { grid-template-columns: 1fr 1fr; }
  .inventory-movement-form .primary-button { grid-column: span 2; }
  .inventory-toolbar { align-items: flex-start; flex-direction: column; }
  .inventory-search { width: 100%; }
  .movement-row { grid-template-columns: 1fr; gap: 4px; }
}
@media (max-width: 450px) {
  .product-grid { grid-template-columns: 1fr; }
  .metric-grid { grid-template-columns: 1fr; }
  .product-form { grid-template-columns: 1fr; }
  .product-description-field { grid-column: auto; }
}