/* ============================================
   Sub-Views (Chat Mode / Grid Mode toggle)
   ============================================ */
.sub-view {
    display: none;
    flex-direction: column;
    flex: 1;
    overflow: hidden;
}

.sub-view.active {
    display: flex;
}

/* Grid Mode */
#gridMode {
    background: #f9fafb;
}

#gridMode .filter-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px;
    background: var(--white);
    border-bottom: 1px solid #e5e7eb;
}

#gridMode .filter-bar label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

#gridMode .filter-bar select {
    flex: 1;
    padding: 10px 14px;
    border: 2px solid #e5e7eb;
    border-radius: 10px;
    font-size: 14px;
    font-family: inherit;
    background: var(--white);
    cursor: pointer;
    outline: none;
    transition: border-color 0.2s;
}

#gridMode .filter-bar select:focus {
    border-color: var(--primary);
}

/* Product Grid */
.product-grid {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    align-content: start;
}

.grid-product-card {
    background: var(--white);
    border-radius: 12px;
    padding: 14px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    display: flex;
    flex-direction: column;
    gap: 8px;
    transition: all 0.2s ease;
    border: 2px solid transparent;
}

.grid-product-card:hover {
    transform: translateY(-2px);
    border-color: var(--primary);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.grid-product-card.best-price {
    border-color: var(--success);
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.05) 0%, rgba(16, 185, 129, 0.1) 100%);
}

.grid-product-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.3;
    margin: 0;
}

.grid-product-seller {
    font-size: 12px;
    color: var(--primary);
}

.grid-product-price {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary);
    background: linear-gradient(135deg, rgba(0, 126, 167, 0.1) 0%, rgba(0, 168, 232, 0.1) 100%);
    padding: 6px 10px;
    border-radius: 8px;
    text-align: center;
}

.grid-product-actions {
    display: flex;
    gap: 6px;
}

.grid-product-actions button {
    flex: 1;
    padding: 8px;
    border: none;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.grid-add-cart {
    background: var(--success);
    color: white;
}

.grid-add-cart:hover {
    background: #059669;
}

.grid-order-now {
    background: var(--warning);
    color: white;
}

.grid-order-now:hover {
    background: #d97706;
}

/* Chat nav icon change for toggle */
.nav-item .nav-icon-toggle {
    display: none;
}

.nav-item.grid-mode .nav-icon {
    display: none;
}

.nav-item.grid-mode .nav-icon-toggle {
    display: inline;
}

/* ============================================
   Animations & Transitions
   ============================================ */
.view {
    transition: opacity 0.25s ease-out;
}

.view-transition {
    animation: viewSlide 0.25s ease-out;
}

.sub-view {
    transition: opacity 0.2s ease-out, transform 0.2s ease-out;
}

.fade-in {
    animation: fadeIn 0.25s ease-out forwards;
}

.fade-out {
    animation: fadeOut 0.15s ease-out forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
        transform: translateY(0);
    }

    to {
        opacity: 0;
        transform: translateY(-8px);
    }
}

@keyframes viewSlide {
    from {
        opacity: 0.8;
        transform: scale(0.98);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Nav item animation */
.nav-item {
    transition: transform 0.15s ease, background 0.15s ease;
}

.nav-item:active {
    transform: scale(0.95);
}

.nav-item.active .nav-label {
    transition: color 0.2s ease;
}

/* Grid mode indicator */
.nav-item.grid-mode {
    background: linear-gradient(135deg, rgba(0, 168, 232, 0.1) 0%, rgba(0, 126, 167, 0.1) 100%);
    border-radius: 12px;
}