.nav-item {
    display: flex;
    align-items: center;
    padding: 1.2rem 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: color var(--transition-speed-fast) var(--easing-standard),
                background var(--transition-speed-fast) var(--easing-standard);
    white-space: nowrap;
}

.nav-item:hover, .nav-item.active {
    color: var(--text-primary);
    background-color: var(--border-component);
}

.nav-icon {
    min-width: 24px;
    margin-right: 16px;
    font-family: var(--font-mono);
    display: flex;
    justify-content: center;
}

.nav-text {
    font-weight: 500;
    transition: opacity var(--transition-speed-fast) var(--easing-standard);
}

#sidebar-container.collapsed .nav-text {
    opacity: 0;
    pointer-events: none;
}

#sidebar-toggle {
    margin-top: auto;
    border-top: 1px solid var(--border-structural);
}

.products-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 1rem;
}

.product-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-structural);
    border-radius: 4px;
    padding: 1rem;
    cursor: pointer;
    transition: transform var(--transition-speed-fast) var(--easing-standard),
                border-color var(--transition-speed-fast) var(--easing-standard);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 120px;
}

.product-card:hover {
    border-color: var(--accent-blue);
    transform: translateY(-2px);
}

.product-name {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.product-price {
    font-family: var(--font-mono);
    color: var(--accent-green);
    font-size: 0.9rem;
    margin-top: auto;
}

.cart-header {
    padding: 1.7rem;
    border-bottom: 1px solid var(--border-structural);
    font-weight: 600;
}

.cart-items-list {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
}

.cart-item-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-structural);
    font-size: 0.9rem;
}

.cart-item-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.cart-btn {
    background: var(--border-component);
    border: none;
    color: var(--text-primary);
    padding: 0.25rem 0.5rem;
    cursor: pointer;
    border-radius: 2px;
}

.cart-btn:hover {
    background: var(--border-accent);
}

.cart-footer {
    padding: 1.2rem;
    border-top: 1px solid var(--border-structural);
    background: var(--bg-base);
}

.total-row {
    display: flex;
    justify-content: space-between;
    font-size: 1.2rem;
    font-weight: 700;
    font-family: var(--font-display);
    margin-bottom: 1rem;
}

.checkout-submit-btn {
    width: 100%;
    background-color: var(--accent-green);
    color: var(--text-primary);
    border: none;
    padding: 1rem;
    font-weight: 600;
    cursor: pointer;
    border-radius: 4px;
    font-family: var(--font-body);
}

.checkout-submit-btn:hover {
    opacity: 0.9;
}

/* Onboarding Tour Engine */
#tour-container {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    z-index: 9999;
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition-speed-normal) var(--easing-standard);
}

#tour-container.active {
    opacity: 1;
    pointer-events: auto;
}

#tour-highlight {
    position: absolute;
    box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.75);
    border-radius: 8px;
    transition: all var(--transition-speed-normal) var(--easing-standard);
    pointer-events: none;
    z-index: 10000;
}

.tour-tooltip {
    position: absolute;
    width: 320px;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-accent);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    z-index: 10001;
    transition: all var(--transition-speed-normal) var(--easing-standard);
}

.tour-header {
    font-family: var(--font-display);
    font-size: 1.1rem;
    color: var(--accent-blue);
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.tour-body {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 1.5rem;
}

.tour-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.tour-btn-skip {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.9rem;
}

.tour-btn-next {
    background: var(--accent-blue);
    color: var(--text-primary);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
}

/* iOS-style Toggle Switch */
.toggle-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.ios-toggle-label {
    cursor: pointer;
    user-select: none;
}

.toggle-text {
    font-weight: 600;
}

.ios-switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
    flex: 0 0 auto;
}

.ios-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background-color: var(--border-component);
    border-radius: 24px;
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.06);
    transition: background-color 220ms var(--easing-standard),
                box-shadow 220ms var(--easing-standard);
}

.slider::before {
    content: '';
    position: absolute;
    left: 2px;
    bottom: 2px;
    width: 20px;
    height: 20px;
    background-color: white;
    border-radius: 50%;
    box-shadow: 0 2px 5px rgba(0,0,0,0.28);
    transition: transform 220ms var(--easing-standard),
                width var(--transition-speed-fast) var(--easing-standard),
                box-shadow var(--transition-speed-fast) var(--easing-standard);
}

.ios-switch input:active + .slider::before {
    width: 24px;
}

.ios-switch input:checked + .slider {
    background-color: var(--accent-green);
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.08);
}

.ios-switch input:checked + .slider::before {
    transform: translateX(20px);
}

.ios-switch input:checked:active + .slider::before {
    transform: translateX(16px);
}

@media (prefers-reduced-motion: reduce) {
    .slider,
    .slider::before {
        transition-duration: 0ms;
    }
}

/* Edit Mode Utilities */
.workspace-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-structural);
}

.event-selector {
    background: var(--bg-surface);
    color: var(--text-primary);
    border: 1px solid var(--border-structural);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-family: var(--font-body);
    outline: none;
}

/* Edit Mode Jiggle Animation */
@keyframes jiggle {
    0% { transform: rotate(-1deg); }
    50% { transform: rotate(1deg); }
    100% { transform: rotate(-1deg); }
}

.grid-section.edit-mode .product-card {
    animation: jiggle 0.3s infinite;
    border-color: var(--border-accent);
}

.grid-section.edit-mode .product-card:hover {
    border-color: var(--accent-orange);
    background-color: rgba(244, 115, 0,0.1);
}

.grid-section.edit-mode .add-card:hover {
    border-color: var(--accent-blue);
    background-color: rgba(27, 146, 226,0.1);
}

.grid-section.edit-mode .set-card:hover {
    border-color: var(--accent-purple);
    background-color: rgba(113, 81, 240,0.1);
}


.delete-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--accent-red);
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: none;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 14px;
    z-index: 10;
}

.grid-section.edit-mode .delete-badge {
    display: flex;
}

.add-card {
    border: 1px dashed var(--border-accent);
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 2rem;
}

.add-card:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

.set-card {
    border-color: var(--accent-purple);
    border: 1px dashed var(--border-accent);
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 2rem;
}

.set-card:hover {
    border-color: var(--accent-purple);
    color: var(--accent-purple);
}

.set-indicator {
    font-size: 0.7rem;
    background: var(--accent-purple);
    color: white;
    padding: 2px 6px;
    border-radius: 4px;
    display: inline-block;
    margin-bottom: 4px;
}

/* Modal Overlays and Cards */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; width: 100dvw; height: 100dvh;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-speed-normal) var(--easing-standard);
}

.modal-overlay.active {
    display: flex;
    opacity: 1;
}

.modal-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-structural);
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    padding: 1.5rem;
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
    transform: translateY(20px);
    transition: transform var(--transition-speed-normal) var(--easing-standard);
    max-height: 65dvh;
    /* overflow-y: auto; */
}

#set-items-container {
    max-height: 25dvh; /* Keeps the list area contained */
    overflow-y: auto;  /* Makes only the list scrollable */
    overflow-x: hidden;
    padding-right: 0.5rem; /* Prevents the scrollbar from overlapping the trash can icon */
}

.modal-overlay.active .modal-card {
    transform: translateY(0);
}

.modal-header {
    font-family: var(--font-display);
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.btn-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.2rem;
    cursor: pointer;
}

/* Form Controls */
.form-group {
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.form-input, .form-select {
    width: 100%;
    background: var(--bg-base);
    border: 1px solid var(--border-structural);
    color: var(--text-primary);
    padding: 0.75rem;
    border-radius: 4px;
    font-family: var(--font-body);
    box-sizing: border-box;
}

.form-input:focus, .form-select:focus {
    border-color: var(--accent-blue);
    outline: none;
}

/* Dynamic Set Rows */
.set-item-row {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    align-items: center;
}

.btn-remove-row {
    background: transparent;
    border: none;
    color: var(--accent-red);
    cursor: pointer;
    padding: 0.5rem;
}

.modal-footer {
    margin-top: 2rem;
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

.btn-cancel {
    background: transparent;
    border: 1px solid var(--border-structural);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
}

.btn-save {
    background: var(--accent-blue);
    border: none;
    color: var(--text-primary);
    padding: 0.5rem 1.5rem;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
}

.btn-warn {
    background: var(--accent-red);
    border: none;
    color: var(--text-primary);
    padding: 0.5rem 1.5rem;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
}

/* --- Mobile View Overrides --- */

@media (max-width: 768px){
    #set-items-container {
        max-height: 15dvh; /* Keeps the list area contained */
        overflow-y: auto;  /* Makes only the list scrollable */
        overflow-x: hidden;
        padding-right: 0.5rem; /* Prevents the scrollbar from overlapping the trash can icon */
    }
}

/* Sidebar Mobile Tabs */
@media (max-width: 768px) {
    #sidebar-container > div:first-child, 
    #sidebar-toggle {
        display: none !important; /* Hide title and toggle button */
    }
    
    .nav-item {
        flex: 1;
        flex-direction: column;
        justify-content: center;
        /* padding: 0.5rem; */
        margin: 0;
        border-radius: 0;
        border-bottom: 3px solid transparent; 
    }

    .nav-item.active {
        background-color: transparent;
        color: var(--accent-blue);
        border-bottom: 3px solid var(--accent-blue);
    }
    
    .nav-icon {
        margin-right: 0;
        margin-bottom: 4px;
        font-size: 1.2rem;
    }
    
    .nav-text {
        font-size: 0.7rem;
        opacity: 1 !important;
        pointer-events: auto !important;
    }
}

/* Mobile Cart Floating Action Button (FAB) */
.mobile-cart-fab {
    display: none;
    position: fixed;
    bottom: calc(70px + 1rem);
    right: 1.5rem;
    width: 60px;
    height: 60px;
    background-color: var(--accent-blue);
    color: white;
    border-radius: 50%;
    box-shadow: 0 4px 15px rgba(29, 155, 240, 0.4);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    cursor: pointer;
    transition: transform 0.2s;
}

.mobile-cart-fab:active {
    transform: scale(0.9);
}

.mobile-cart-fab .badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background-color: var(--accent-red);
    color: white;
    font-size: 0.75rem;
    font-weight: bold;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--bg-base);
}

@media (max-width: 768px) {
    .mobile-cart-fab { display: flex; }
}

/* Mobile Cart Header Close Button */
.btn-close-cart {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
}

@media (max-width: 768px) {
    .btn-close-cart { display: block; }
}

/* =========================================
   TOAST NOTIFICATIONS (Non-blocking Alerts)
   ========================================= */
   #toast-container {
    position: fixed;
    top: 24px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 10000;
    pointer-events: none; /* Lets you click through the container */
}

.sys-toast {
    background: var(--bg-surface);
    border-left: 4px solid var(--accent-blue);
    color: var(--text-primary);
    padding: 1rem 1.5rem;
    border-radius: 4px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.6);
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    pointer-events: auto; /* Re-enables clicking on the toast itself */
    
    /* Animation start state */
    transform: translateX(120%);
    opacity: 0;
    transition: all var(--transition-speed-normal) var(--easing-standard);
}

.sys-toast.active {
    transform: translateX(0);
    opacity: 1;
}

/* Status Colors */
.sys-toast.success { border-left-color: var(--accent-green); color: var(--accent-green); }
.sys-toast.error { border-left-color: var(--accent-red); color: var(--accent-red); }
.sys-toast.warning { border-left-color: var(--accent-orange); color: var(--accent-orange); }

.sys-toast span {
    color: var(--text-primary); /* Keeps text white, only icons/borders are colored */
}

/* =========================================
   SYSTEM DIALOGS (Alert & Confirm)
   ========================================= */
   .sys-dialog-overlay {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-speed-normal) var(--easing-standard);
}

.sys-dialog-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.sys-dialog-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-structural);
    border-radius: 8px;
    width: 90%;
    max-width: 400px;
    padding: 1.5rem;
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
    transform: translateY(20px) scale(0.95);
    transition: all var(--transition-speed-normal) var(--easing-standard);
    text-align: center;
}

.sys-dialog-overlay.active .sys-dialog-card {
    transform: translateY(0) scale(1);
}

.sys-dialog-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.sys-dialog-msg {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.sys-dialog-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

/* Sortable.js */
.grid-section.edit-mode .product-card:not(.add-card):not(.set-card) {
    cursor: grab;
}

.grid-section.edit-mode .product-card:active {
    cursor: grabbing;
}

.sortable-ghost {
    opacity: 0.4;
    border: 2px dashed var(--accent-orange) !important;
    background: transparent !important;
}