/* ============================================================
   POKLADNA - styly
   Moderní, čisté rozhraní optimalizované pro dotykové obrazovky
   ============================================================ */

:root {
    --primary: #2563eb;        /* modrá - hlavní akce */
    --primary-dark: #1d4ed8;
    --success: #16a34a;        /* zelená - zaplatit, potvrzení */
    --success-dark: #15803d;
    --danger: #dc2626;         /* červená - mazání */
    --bg: #f1f5f9;             /* pozadí aplikace */
    --surface: #ffffff;        /* karty, panely */
    --border: #e2e8f0;
    --text: #0f172a;
    --text-muted: #64748b;
    --radius: 12px;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
    height: 100%;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    /* Když se obsah nevejde na obrazovku, stránka se dá rolovat */
    overflow-x: hidden;
    overflow-y: auto;
}

/* ============ Horní lišta ============ */

.topbar {
    display: flex;
    align-items: center;
    gap: 24px;
    height: 60px;
    padding: 0 20px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.topbar-brand {
    font-size: 1.3rem;
    font-weight: 700;
}

.topbar-tabs { display: flex; gap: 8px; }

.tab-btn {
    padding: 10px 22px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius);
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: background 0.15s;
}

.tab-btn:hover { background: var(--bg); }
.tab-btn.active { background: var(--primary); color: #fff; }

.topbar-actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 16px;
}

.btn-icon {
    padding: 10px 18px;
    font-size: 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    cursor: pointer;
}
.btn-icon:hover { background: var(--bg); }

.scanner-indicator {
    font-size: 0.85rem;
    color: var(--success);
    font-weight: 600;
}

/* ============ Záložky ============ */

.tab-content { display: none; }
.tab-content.active { display: block; }

/* ============ POS layout ============ */

.pos-layout {
    display: grid;
    /* Košík vpravo: pružná šířka 230-400px podle velikosti obrazovky */
    grid-template-columns: 1fr clamp(230px, 34vw, 400px);
    gap: 16px;
    /* Přizpůsobí se výšce obrazovky; na velmi nízkých displejích
       drží minimální výšku a stránka se doroluje */
    height: calc(100vh - 60px);
    min-height: 540px;
    padding: 16px;
}

/* --- Levý panel: produkty --- */

.products-panel {
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-width: 0;
}

.category-bar {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.category-btn {
    padding: 12px 20px;
    font-size: 1rem;
    font-weight: 600;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    cursor: pointer;
    transition: all 0.15s;
}
.category-btn:hover { border-color: var(--primary); }
.category-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }

.search-row input {
    width: 100%;
    padding: 14px 16px;
    font-size: 1.05rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    outline: none;
}
.search-row input:focus { border-color: var(--primary); }

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 12px;
    overflow-y: auto;
    align-content: start;
    padding-bottom: 16px;
}

/* Dlaždice produktu - velká, dotyková */
.product-tile {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 110px;
    padding: 14px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: transform 0.1s, border-color 0.15s;
    user-select: none;
}
.product-tile:hover { border-color: var(--primary); }
.product-tile:active { transform: scale(0.96); }

.product-tile .tile-name {
    font-weight: 600;
    font-size: 1rem;
    line-height: 1.3;
}
.product-tile .tile-price {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--primary);
    margin-top: 8px;
}
.product-tile .tile-category {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Dlaždice "Vlastní částka" - vždy první v mřížce */
.custom-tile {
    justify-content: center;
    align-items: center;
    text-align: center;
    border: 2px dashed var(--primary);
    color: var(--primary);
    font-weight: 700;
    font-size: 1.05rem;
    line-height: 1.6;
    background: #eff6ff;
}
.custom-tile:hover { background: #dbeafe; }

/* Popis v dialogu vlastní částky - menší písmo než částka */
.custom-name-label input {
    font-size: 1rem !important;
    font-weight: 400 !important;
    padding: 10px !important;
}

/* Kompaktnější dialog vlastní částky (méně rolování na malých monitorech) */
#custom-modal .modal { padding: 20px 24px; }
#custom-modal h2 { margin-bottom: 12px; }
#custom-modal .cash-label { margin-bottom: 10px; gap: 4px; }
#custom-modal .cash-label input {
    padding: 10px;
    font-size: 1.3rem;
}

/* Číselník pro dotykové zadání částky - kompaktní, ať se dialog
   vejde i na nižší monitory bez rolování */
.numpad {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    max-width: 260px;
    margin: 4px auto 12px;
}
.numpad button {
    padding: 10px 0;
    font-size: 1.2rem;
    font-weight: 700;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--bg);
    cursor: pointer;
    user-select: none;
}
.numpad button:hover { background: #e2e8f0; }
.numpad button:active { transform: scale(0.95); }
.numpad-back { color: var(--danger); }

/* Tlačítko "Rovnou kartou" */
.btn-pay-now {
    padding: 16px 28px;
    font-size: 1.2rem;
    font-weight: 800;
    border: none;
    border-radius: var(--radius);
    background: var(--success);
    color: #fff;
    cursor: pointer;
}
.btn-pay-now:hover { background: var(--success-dark); }

/* Správa kategorií */
.category-mgmt-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 16px;
    text-align: left;
}
.category-mgmt-row {
    display: flex;
    align-items: center;
    gap: 10px;
}
.category-mgmt-row input {
    flex: 1;
    padding: 12px 14px;
    font-size: 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    outline: none;
}
.category-mgmt-row input:focus { border-color: var(--primary); }
.cat-count {
    color: var(--text-muted);
    font-size: 0.85rem;
    white-space: nowrap;
}
.category-hidden input { opacity: 0.5; }

/* Klikací štítky kategorií ve formuláři produktu */
.category-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin: -6px 0 4px;
}
.cat-chip {
    padding: 8px 14px;
    font-size: 0.9rem;
    font-weight: 600;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--surface);
    color: var(--text-muted);
    cursor: pointer;
}
.cat-chip:hover { border-color: var(--primary); }
.cat-chip.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* Označení skrytého produktu v tabulce administrace */
.hidden-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 700;
    background: #fef3c7;
    color: #92400e;
    margin-left: 6px;
}

/* Checkbox řádek ve formuláři produktu */
.checkbox-row {
    flex-direction: row !important;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px !important;
}
.checkbox-row input[type="checkbox"] {
    width: 22px;
    height: 22px;
    accent-color: var(--primary);
}
.checkbox-row small { flex-basis: 100%; }

/* Rozpis DPH v uzávěrce */
.closing-vat {
    text-align: left;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 14px;
}
.closing-vat-row { padding: 2px 0; }

/* --- Pravý panel: košík --- */

.cart-panel {
    display: flex;
    flex-direction: column;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.cart-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    font-size: 1.2rem;
    font-weight: 700;
    border-bottom: 1px solid var(--border);
}

/* Malá ikonka pro vyprázdnění košíku v hlavičce */
.btn-clear-small {
    padding: 9px 14px;
    font-size: 0.95rem;
    font-weight: 600;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    color: var(--danger);
    cursor: pointer;
}
.btn-clear-small:hover { background: #fee2e2; }

.cart-items {
    flex: 1;
    min-height: 100px;   /* košík se nikdy nesmrskne úplně */
    overflow-y: auto;
    padding: 8px;
}

.cart-empty {
    text-align: center;
    color: var(--text-muted);
    padding: 40px 20px;
    font-size: 1rem;
}

.cart-item {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 4px;
    padding: 10px 12px;
    border-radius: 8px;
    margin-bottom: 4px;
}
.cart-item:nth-child(odd) { background: var(--bg); }

.cart-item-name { font-weight: 600; font-size: 0.95rem; }
.cart-item-price {
    font-weight: 700;
    text-align: right;
    white-space: nowrap;
}

.cart-item-controls {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: 8px;
}

.qty-btn {
    width: 40px;
    height: 40px;
    font-size: 1.3rem;
    font-weight: 700;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    cursor: pointer;
}
.qty-btn:hover { background: var(--bg); }

.qty-value {
    min-width: 36px;
    text-align: center;
    font-weight: 700;
    font-size: 1.05rem;
}

.remove-btn {
    margin-left: auto;
    width: 40px;
    height: 40px;
    font-size: 1.1rem;
    border: none;
    border-radius: 8px;
    background: transparent;
    color: var(--danger);
    cursor: pointer;
}
.remove-btn:hover { background: #fee2e2; }

/* --- Souhrn košíku --- */

.cart-summary {
    padding: 16px 20px;
    border-top: 1px solid var(--border);
    background: var(--surface);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 0;
    font-size: 1rem;
}

.discount-controls {
    display: flex;
    gap: 6px;
}
.discount-controls input {
    width: 90px;
    padding: 10px;
    font-size: 1rem;
    text-align: right;
    border: 1px solid var(--border);
    border-radius: 8px;
    outline: none;
}
.discount-controls input:focus { border-color: var(--primary); }

.btn-discount-type {
    width: 46px;
    font-size: 1rem;
    font-weight: 700;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg);
    cursor: pointer;
}

.total-row {
    font-size: 1.4rem;
    font-weight: 800;
    padding-top: 12px;
}

.cart-buttons {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 10px;
    margin-top: 14px;
}

.btn-clear {
    padding: 16px 18px;
    font-size: 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    color: var(--danger);
    cursor: pointer;
}
.btn-clear:hover { background: #fee2e2; }

/* Velké tlačítko ZAPLATIT */
.btn-pay {
    padding: 16px;
    font-size: 1.3rem;
    font-weight: 800;
    border: none;
    border-radius: var(--radius);
    background: var(--success);
    color: #fff;
    cursor: pointer;
    transition: background 0.15s;
}
.btn-pay:hover:not(:disabled) { background: var(--success-dark); }
.btn-pay:disabled { background: #cbd5e1; cursor: not-allowed; }

/* Dvě platební tlačítka vedle sebe v košíku */
.pay-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 12px;
}
.btn-pay-cash { background: var(--success); }
.btn-pay-cash:hover:not(:disabled) { background: var(--success-dark); }
.btn-pay-card { background: var(--primary); }
.btn-pay-card:hover:not(:disabled) { background: var(--primary-dark); }
.btn-pay-cash:disabled, .btn-pay-card:disabled { background: #cbd5e1; cursor: not-allowed; }

/* ============ Administrace ============ */

.admin-layout {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 16px;
    /* Roste s obsahem (dlouhé tabulky) - stránka se pak normálně roluje */
    min-height: calc(100vh - 60px);
    padding: 16px;
}

.admin-nav {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.admin-tab-btn {
    padding: 14px 18px;
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    cursor: pointer;
}
.admin-tab-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }

.admin-section {
    display: none;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    overflow-y: auto;
}
.admin-section.active { display: block; }

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
}
.admin-table th, .admin-table td {
    padding: 12px 10px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}
.admin-table th {
    font-size: 0.85rem;
    text-transform: uppercase;
    color: var(--text-muted);
}

.table-btn {
    padding: 8px 14px;
    margin-right: 6px;
    font-size: 0.9rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    cursor: pointer;
}
.table-btn:hover { background: var(--bg); }
.table-btn.danger { color: var(--danger); }
.table-btn.danger:hover { background: #fee2e2; }

.history-summary {
    font-weight: 600;
    color: var(--text-muted);
}

/* Hledání nad tabulkou produktů */
.admin-search-input {
    width: 100%;
    padding: 12px 14px;
    font-size: 1rem;
    border: 1px solid var(--border);
    border-radius: 10px;
    outline: none;
    margin-bottom: 14px;
}
.admin-search-input:focus { border-color: var(--primary); }

/* Filtr produktů podle kategorie v administraci */
.admin-cat-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 14px;
}

/* Šipky pro změnu pořadí produktu */
.order-btns { display: inline-flex; gap: 4px; }
.order-btn {
    width: 34px;
    height: 34px;
    font-size: 0.85rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    cursor: pointer;
    line-height: 1;
}
.order-btn:hover:not(:disabled) { background: var(--bg); border-color: var(--primary); }
.order-btn:disabled { opacity: 0.3; cursor: not-allowed; }

/* Přehled tržeb */
.report-presets {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}
.report-preset {
    padding: 10px 16px;
    font-size: 0.95rem;
    font-weight: 600;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--surface);
    cursor: pointer;
}
.report-preset:hover { border-color: var(--primary); }
.report-preset.active { background: var(--primary); color: #fff; border-color: var(--primary); }

.report-range {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: 12px;
    margin-bottom: 18px;
}
.report-range label {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-weight: 600;
    font-size: 0.9rem;
}
.report-range input {
    padding: 10px 12px;
    font-size: 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    outline: none;
}
.report-range input:focus { border-color: var(--primary); }

.report-summary {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin-bottom: 16px;
}

.report-subtitle { margin: 20px 0 10px; }

/* Filtry historie prodejů */
.history-filter-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}
.history-search { margin-bottom: 0; flex: 1; min-width: 180px; }
.history-cats-wrap {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin-bottom: 14px;
}
.history-cats-label { font-weight: 600; font-size: 0.9rem; color: var(--text-muted); }

/* Výrazný součet vyfiltrovaného v historii */
.filtered-summary { margin-bottom: 14px; }
.filtered-summary-main {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    align-items: center;
    padding: 12px 16px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    font-size: 1.05rem;
}
.filtered-summary-main b { color: var(--text); }
.filtered-summary-cat {
    margin-top: 8px;
    padding: 10px 16px;
    background: #eff6ff;
    border: 1px solid #bfdbfe;
    border-radius: 10px;
    font-size: 1.05rem;
}
.filtered-summary-cat b { color: var(--primary-dark); }
@media (max-width: 640px) {
    .report-summary { grid-template-columns: 1fr 1fr; }
}

.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 700;
}
.badge.cash { background: #dcfce7; color: var(--success-dark); }
.badge.card { background: #dbeafe; color: var(--primary-dark); }

/* ============ Formuláře (nastavení, produkt) ============ */

.settings-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-width: 480px;
}

.settings-form label {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-weight: 600;
}

.settings-form input {
    padding: 12px 14px;
    font-size: 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    outline: none;
}
.settings-form input:focus { border-color: var(--primary); }
.settings-form small { font-weight: 400; color: var(--text-muted); }

.saved-msg { color: var(--success); font-weight: 600; }

/* Párování SumUp terminálu */
.pairing-box {
    margin-top: 28px;
    padding: 20px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg);
    max-width: 560px;
}
.pairing-box h3 { margin-bottom: 10px; }
.pairing-box h4 { margin: 16px 0 8px; }

.pairing-help {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 14px;
}

.pairing-row {
    display: flex;
    gap: 10px;
}
.pairing-row input {
    flex: 1;
    padding: 12px 14px;
    font-size: 1.05rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    border: 1px solid var(--border);
    border-radius: 8px;
    outline: none;
}
.pairing-row input:focus { border-color: var(--primary); }

.pairing-result {
    min-height: 24px;
    padding: 8px 0;
    font-weight: 600;
}

.readers-list { margin-bottom: 12px; }
.reader-row { padding: 6px 0; }
.reader-status {
    margin-left: 8px;
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: lowercase;
}

.btn-primary {
    padding: 12px 22px;
    font-size: 1rem;
    font-weight: 700;
    border: none;
    border-radius: var(--radius);
    background: var(--primary);
    color: #fff;
    cursor: pointer;
}
.btn-primary:hover { background: var(--primary-dark); }

.btn-secondary {
    padding: 12px 22px;
    font-size: 1rem;
    font-weight: 600;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    cursor: pointer;
}
.btn-secondary:hover { background: var(--bg); }

.btn-big { font-size: 1.15rem; padding: 13px 24px; }

/* ============ Modaly ============ */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.55);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
}
.modal-overlay.hidden { display: none; }

.modal {
    background: var(--surface);
    border-radius: 16px;
    padding: 20px 22px;
    width: min(500px, 92vw);
    max-height: 92vh;
    overflow-y: auto;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
    text-align: center;
}
.modal h2 { margin-bottom: 14px; }

.hidden { display: none !important; }

.payment-amount { color: var(--success); }

.payment-methods {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 20px;
}

/* Velká tlačítka metod platby */
.btn-method {
    padding: 22px 16px;
    font-size: 1.15rem;
    font-weight: 800;
    line-height: 1.4;
    border: 2px solid var(--border);
    border-radius: 16px;
    background: var(--surface);
    cursor: pointer;
    transition: all 0.15s;
}
.btn-method:hover { border-color: var(--primary); background: #eff6ff; }
.btn-method small { font-weight: 400; color: var(--text-muted); }

.cash-label {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-weight: 600;
    margin-bottom: 16px;
}

.cash-label input {
    padding: 16px;
    font-size: 1.6rem;
    font-weight: 700;
    text-align: center;
    border: 2px solid var(--border);
    border-radius: 12px;
    outline: none;
}
.cash-label input:focus { border-color: var(--primary); }

/* Tabulka vracení: čím zákazník zaplatí -> kolik vrátit */
.quick-cash {
    display: flex;
    flex-direction: column;
    gap: 5px;
    margin-bottom: 10px;
}

.cash-instructions {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.cash-autoclose-hint {
    color: var(--text-muted);
    font-size: 0.78rem;
    margin: 6px 0 2px;
}

.change-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 11px 16px;
    font-size: 1rem;
    font-weight: 600;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--bg);
    cursor: pointer;
    user-select: none;
}
.change-row:hover { background: #e2e8f0; }
.change-row:active { transform: scale(0.98); }
.change-row b { color: var(--success); white-space: nowrap; }

.success-autoclose {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.cash-change {
    font-size: 1.5rem;
    font-weight: 800;
    min-height: 44px;
    margin-bottom: 12px;
}
.cash-change.positive { color: var(--success); }
.cash-change.negative { color: var(--danger); }

.modal-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-top: 8px;
}

/* Stav platby kartou */
.card-status { padding: 20px 0 28px; }
.card-status p { font-size: 1.15rem; font-weight: 600; margin-top: 16px; }

.spinner {
    width: 52px;
    height: 52px;
    margin: 0 auto;
    border: 5px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.9s linear infinite;
}
.spinner.hidden { display: none; }

@keyframes spin { to { transform: rotate(360deg); } }

.success-icon { font-size: 4rem; margin-bottom: 12px; }

#success-detail { font-size: 1.1rem; margin-bottom: 20px; }

/* Kamera */
#camera-reader { margin-bottom: 16px; }

/* ============ Nástroje pod košíkem (naskladnění, zásoby, uzávěrka) ============ */

.cart-tools {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 8px;
    margin-top: 10px;
}

.btn-tool {
    padding: 12px 6px;
    font-size: 0.9rem;
    font-weight: 600;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--bg);
    cursor: pointer;
    white-space: nowrap;
}
.btn-tool:hover { background: #e2e8f0; }

/* ============ Sklad / naskladnění ============ */

.modal-wide { width: min(640px, 94vw); }

.modal-search {
    width: 100%;
    padding: 12px 14px;
    font-size: 1rem;
    border: 1px solid var(--border);
    border-radius: 10px;
    outline: none;
    margin-bottom: 12px;
}
.modal-search:focus { border-color: var(--primary); }

.stock-list {
    max-height: 260px;
    overflow-y: auto;
    text-align: left;
    border: 1px solid var(--border);
    border-radius: 10px;
    margin-bottom: 14px;
}
.stock-list-tall { max-height: 55vh; }

.stock-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
}
.stock-row:last-child { border-bottom: none; }
.stock-row:hover { background: var(--bg); }
.stock-row.selected { background: #dbeafe; }

.stock-row-name small { color: var(--text-muted); margin-left: 6px; }

.stock-row-qty {
    font-weight: 700;
    white-space: nowrap;
}

/* Barvy stavu zásob */
.stock-ok { color: var(--success); }
.stock-low { color: #d97706; }     /* oranžová - dochází */
.stock-out { color: var(--danger); }

.stock-empty {
    padding: 20px;
    text-align: center;
    color: var(--text-muted);
}

.restock-selected {
    border: 2px solid var(--primary);
    border-radius: 12px;
    padding: 14px;
    margin-bottom: 14px;
    text-align: left;
}

.restock-product-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}
.restock-product-info span { color: var(--text-muted); font-size: 0.9rem; }

.restock-controls {
    display: flex;
    align-items: center;
    gap: 10px;
}
.restock-controls input {
    width: 100px;
    padding: 12px;
    font-size: 1.2rem;
    font-weight: 700;
    text-align: center;
    border: 1px solid var(--border);
    border-radius: 10px;
    outline: none;
}
.restock-controls input:focus { border-color: var(--primary); }

.restock-recent {
    text-align: left;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 14px;
}
.restock-recent h4 { margin-bottom: 6px; }
.restock-recent-row { padding: 3px 0; }

/* ============ Uzávěrka dne ============ */

.closing-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin-bottom: 18px;
}

.closing-stat {
    background: var(--bg);
    border-radius: 10px;
    padding: 12px 8px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.closing-stat span { font-size: 0.8rem; color: var(--text-muted); }
.closing-stat b { font-size: 1.05rem; }

.closing-subtitle { margin-bottom: 10px; }

.denom-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    /* Plní se po sloupcích: prvních 6 hodnot vlevo (mince 1-50),
       zbytek vpravo (bankovky 100-2000) */
    grid-template-rows: repeat(6, auto);
    grid-auto-flow: column;
    gap: 6px 18px;
    margin-bottom: 14px;
}

.denom-row {
    display: grid;
    grid-template-columns: 68px 48px 60px 48px 1fr;
    align-items: center;
    gap: 6px;
    text-align: right;
}

/* Velká -/+ tlačítka pro dotykové počítání bankovek */
.denom-btn {
    width: 48px;
    height: 44px;
    font-size: 1.4rem;
    font-weight: 700;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--bg);
    cursor: pointer;
    user-select: none;
    color: var(--danger);
}
.denom-btn-plus { color: var(--success); }
.denom-btn:hover { background: #e2e8f0; }
.denom-btn:active { transform: scale(0.92); }

/* Když je zadaná částka rovnou, počítadlo bankovek se utlumí */
.denom-grid.inactive { opacity: 0.4; pointer-events: none; }

.closing-hint {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 10px;
    text-align: left;
}

/* Pole pro přímé zadání napočítané částky */
.closing-direct-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
    text-align: left;
}
.closing-direct-row label { font-weight: 600; }
.closing-direct-row input {
    width: 130px;
    padding: 12px;
    font-size: 1.15rem;
    font-weight: 700;
    text-align: right;
    border: 2px solid var(--border);
    border-radius: 8px;
    outline: none;
    margin-left: auto;
}
.closing-direct-row input:focus { border-color: var(--primary); }
/* Pole otevírá číselník, takže se tváří jako tlačítko */
.closing-direct-row input[readonly] { cursor: pointer; background: var(--surface); }

/* Displej číselníku v okně uzávěrky */
.numpad-display {
    font-size: 1.8rem;
    font-weight: 800;
    text-align: right;
    padding: 14px 18px;
    margin-bottom: 12px;
    border: 2px solid var(--border);
    border-radius: 12px;
    background: var(--bg);
    min-height: 58px;
}

/* Číselník v uzávěrce - kompaktnější */
.closing-numpad {
    max-width: 300px;
    margin: 10px auto 4px;
}
.closing-numpad button { padding: 13px 0; }
.denom-value { font-weight: 600; white-space: nowrap; }
.denom-times { color: var(--text-muted); text-align: center; }
.denom-count {
    padding: 8px;
    font-size: 1rem;
    text-align: center;
    border: 1px solid var(--border);
    border-radius: 8px;
    outline: none;
}
.denom-count:focus { border-color: var(--primary); }
.denom-sum { font-size: 0.85rem; color: var(--text-muted); white-space: nowrap; }

.closing-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 6px 0;
    text-align: left;
}
.closing-row input {
    width: 120px;
    padding: 10px;
    font-size: 1rem;
    text-align: right;
    border: 1px solid var(--border);
    border-radius: 8px;
    outline: none;
}

.closing-summary {
    border-top: 2px solid var(--border);
    margin-top: 10px;
    padding-top: 10px;
}

.closing-diff-row { font-size: 1.2rem; }

/* Nepotvrzená automatická uzávěrka - zvýrazněný řádek */
.closing-pending { background: #fef9c3; }
.confirm-diff { min-height: 24px; margin: 8px 0 12px; font-weight: 600; }
.edit-closing-calc {
    padding: 10px 14px;
    background: var(--bg);
    border-radius: 10px;
    font-size: 1.05rem;
    text-align: center;
}

/* Barvy rozdílu: zelená = sedí, modrá = přebývá, červená = chybí */
.diff-ok { color: var(--success); }
.diff-plus { color: var(--primary); }
.diff-minus { color: var(--danger); }

@media (max-width: 640px) {
    .closing-stats { grid-template-columns: 1fr 1fr; }
    /* Na úzkém displeji jeden sloupec, hodnoty pod sebou v pořadí 1-2000 */
    .denom-grid {
        grid-template-columns: 1fr;
        grid-template-rows: none;
        grid-auto-flow: row;
    }
}

/* ============ Responzivita (menší obrazovky / tablety) ============ */

/* Košík zůstává vpravo i na užších obrazovkách;
   pod sebe se zalomí až na velmi úzkém displeji (mobil na výšku) */
@media (max-width: 460px) {
    body { overflow: auto; }
    .pos-layout {
        grid-template-columns: 1fr;
        height: auto;
    }
    .cart-panel { min-height: 300px; }
}

@media (max-width: 900px) {
    .product-grid { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); }
    .admin-layout { grid-template-columns: 1fr; height: auto; }
    .admin-nav { flex-direction: row; flex-wrap: wrap; }
}