/* Food Ordering System - Frontend Styles */
:root {
    --fos-primary: #e85d04;
    --fos-primary-dark: #c44d02;
    --fos-success: #10b981;
    --fos-danger: #ef4444;
    --fos-bg: #f9fafb;
    --fos-card: #ffffff;
    --fos-border: #e5e7eb;
    --fos-text: #1f2937;
    --fos-muted: #6b7280;
    --fos-radius: 12px;
    --fos-shadow: 0 2px 8px rgba(0,0,0,.08);
}

.fos-app { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; color: var(--fos-text); }

/* Status bar */
.fos-status-bar { padding: 10px 16px; border-radius: 8px; font-weight: 600; margin-bottom: 20px; font-size: .95rem; }
.fos-status-open  { background: #d1fae5; color: #065f46; }
.fos-status-closed { background: #fee2e2; color: #991b1b; }

/* Layout */
.fos-layout { display: flex; gap: 24px; align-items: flex-start; }
.fos-menu-col { flex: 1 1 0; min-width: 0; }
.fos-side-col  { width: 340px; flex-shrink: 0; position: sticky; top: 20px; }

@media (max-width: 768px) {
    .fos-layout { flex-direction: column; }
    .fos-side-col { width: 100%; position: static; }
}

/* Category tabs */
.fos-cat-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.fos-cat-tab  { padding: 6px 16px; border-radius: 20px; border: 2px solid var(--fos-border); background: #fff; cursor: pointer; font-size: .85rem; font-weight: 600; transition: all .2s; }
.fos-cat-tab:hover { border-color: var(--fos-primary); color: var(--fos-primary); }
.fos-cat-tab.active { background: var(--fos-primary); border-color: var(--fos-primary); color: #fff; }

/* Items grid */
.fos-items-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; }
.fos-item { background: var(--fos-card); border-radius: var(--fos-radius); box-shadow: var(--fos-shadow); overflow: hidden; transition: transform .2s, box-shadow .2s; }
.fos-item:hover { transform: translateY(-2px); box-shadow: 0 6px 18px rgba(0,0,0,.12); }
.fos-item-unavailable { opacity: .55; pointer-events: none; }
.fos-item-img { height: 140px; background-size: cover; background-position: center; }
.fos-item-no-img { display: flex; align-items: center; justify-content: center; background: #f3f4f6; font-size: 2.5rem; }
.fos-item-body { padding: 12px; }
.fos-item-name { margin: 0 0 4px; font-size: .95rem; font-weight: 700; }
.fos-item-desc { margin: 0 0 10px; font-size: .8rem; color: var(--fos-muted); line-height: 1.4; }
.fos-item-footer { display: flex; align-items: center; justify-content: space-between; }
.fos-item-price { font-size: 1.1rem; font-weight: 700; color: var(--fos-primary); }
.fos-add-btn { background: var(--fos-primary); color: #fff; border: none; padding: 6px 14px; border-radius: 8px; cursor: pointer; font-size: .85rem; font-weight: 700; transition: background .2s; }
.fos-add-btn:hover { background: var(--fos-primary-dark); }
.fos-unavailable-tag { font-size: .78rem; color: var(--fos-muted); background: #f3f4f6; padding: 4px 10px; border-radius: 6px; }

/* Cart */
.fos-cart-box { background: var(--fos-card); border-radius: var(--fos-radius); box-shadow: var(--fos-shadow); padding: 20px; margin-bottom: 20px; }
.fos-cart-box h2 { margin: 0 0 16px; font-size: 1.1rem; display: flex; align-items: center; gap: 8px; }
.fos-cart-count { background: var(--fos-primary); color: #fff; border-radius: 20px; padding: 2px 9px; font-size: .8rem; }
.fos-empty-cart { color: var(--fos-muted); text-align: center; padding: 16px 0; font-size: .9rem; }
.fos-cart-item { display: flex; align-items: center; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--fos-border); font-size: .9rem; }
.fos-cart-item:last-child { border-bottom: none; }
.fos-ci-name { flex: 1; font-weight: 600; }
.fos-ci-qty { display: flex; align-items: center; gap: 6px; }
.fos-qty-btn { background: var(--fos-bg); border: 1px solid var(--fos-border); width: 26px; height: 26px; border-radius: 6px; cursor: pointer; font-size: 1rem; line-height: 1; display: flex; align-items: center; justify-content: center; }
.fos-qty-btn:hover { background: var(--fos-primary); color: #fff; border-color: var(--fos-primary); }
.fos-ci-price { font-weight: 700; color: var(--fos-primary); min-width: 60px; text-align: right; }
.fos-cart-totals { border-top: 2px solid var(--fos-border); padding-top: 12px; margin-top: 12px; }
.fos-total-row { display: flex; justify-content: space-between; padding: 3px 0; font-size: .9rem; }
.fos-grand-total { font-size: 1.05rem; font-weight: 700; color: var(--fos-text); border-top: 1px dashed var(--fos-border); margin-top: 6px; padding-top: 6px; }

/* Checkout */
.fos-checkout-box { background: var(--fos-card); border-radius: var(--fos-radius); box-shadow: var(--fos-shadow); padding: 20px; }
.fos-checkout-box h2 { margin: 0 0 16px; font-size: 1.1rem; }
.fos-field { margin-bottom: 14px; }
.fos-field label { display: block; font-size: .85rem; font-weight: 600; margin-bottom: 5px; color: var(--fos-text); }
.fos-field label span { color: var(--fos-danger); }
.fos-field input, .fos-field textarea { width: 100%; padding: 9px 12px; border: 1.5px solid var(--fos-border); border-radius: 8px; font-size: .9rem; box-sizing: border-box; transition: border .2s; }
.fos-field input:focus, .fos-field textarea:focus { outline: none; border-color: var(--fos-primary); }
.fos-order-type-toggle { display: flex; gap: 8px; }
.fos-type-btn { flex: 1; padding: 8px; border: 2px solid var(--fos-border); border-radius: 8px; background: #fff; cursor: pointer; font-size: .9rem; font-weight: 600; transition: all .2s; }
.fos-type-btn.active { background: var(--fos-primary); border-color: var(--fos-primary); color: #fff; }
.fos-payment-info { background: #fef3c7; border: 1px solid #fde68a; border-radius: 8px; padding: 10px 14px; font-size: .87rem; margin: 14px 0; }
.fos-error { background: #fee2e2; color: #991b1b; border-radius: 8px; padding: 10px 14px; font-size: .87rem; margin-bottom: 12px; }
.fos-order-btn { width: 100%; padding: 14px; background: var(--fos-primary); color: #fff; border: none; border-radius: 10px; font-size: 1rem; font-weight: 700; cursor: pointer; transition: background .2s; }
.fos-order-btn:hover:not(:disabled) { background: var(--fos-primary-dark); }
.fos-order-btn:disabled { background: #d1d5db; cursor: not-allowed; }
.fos-btn-secondary { background: #6b7280; margin-top: 12px; }
.fos-btn-secondary:hover { background: #4b5563; }

/* Success */
.fos-success-box { background: var(--fos-card); border-radius: var(--fos-radius); box-shadow: var(--fos-shadow); padding: 32px 20px; text-align: center; }
.fos-success-icon { font-size: 3rem; margin-bottom: 12px; }
.fos-success-box h2 { color: var(--fos-success); }

/* Spinner */
.fos-spinner { display: inline-block; width: 16px; height: 16px; border: 2px solid rgba(255,255,255,.4); border-top-color: #fff; border-radius: 50%; animation: fos-spin .6s linear infinite; vertical-align: middle; margin-left: 8px; }
@keyframes fos-spin { to { transform: rotate(360deg); } }