/**
 * ZENZ CHOCO - Responsive Layouts & Breakpoint Overrides
 * File: /public_html/assets/css/responsive.css
 * 
 * Provides responsive breakpoint rules and adaptive styles for desktop,
 * tablet, mobile, and small viewport devices. Builds upon style.css and components.css.
 */

/* ==========================================================================
   1. Large Desktop & High-Resolution Displays (Min-width: 1200px)
   ========================================================================== */
@media (min-width: 1200px) {
    .product-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-6);
    }

    .category-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-6);
    }
}

/* ==========================================================================
   2. Medium Desktop / Laptop Adaptations (Max-width: 1199px)
   ========================================================================== */
@media (max-width: 1199px) {
    :root {
        --container-padding: 1.25rem;
    }

    .footer-grid {
        grid-template-columns: 1.3fr 1fr 1fr 1.2fr;
        gap: var(--space-6);
    }

    .checkout-layout {
        grid-template-columns: 1.4fr 1fr;
        gap: var(--space-6);
    }

    .product-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-5);
    }
}

/* ==========================================================================
   3. Tablet Landscape & Intermediate Viewports (Max-width: 991px)
   ========================================================================== */
@media (max-width: 991px) {
    /* Fluid Responsive Typography */
    h1 { font-size: clamp(1.75rem, 4vw, 2.25rem); }
    h2 { font-size: clamp(1.5rem, 3.5vw, 1.875rem); }
    h3 { font-size: clamp(1.25rem, 3vw, 1.5rem); }

    /* Section Rhythm */
    .section {
        padding-top: var(--space-8);
        padding-bottom: var(--space-8);
    }

    .section-lg {
        padding-top: var(--space-12);
        padding-bottom: var(--space-12);
    }

    /* Primary Navigation Switch: Hide Desktop Bar, Reveal Mobile Controls */
    .desktop-only {
        display: none !important;
    }

    .mobile-only {
        display: flex !important;
    }

    .nav-toggle-btn {
        display: flex;
    }

    /* Off-Screen Mobile Navigation Overlay */
    .primary-nav {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        width: 100%;
        max-width: 320px;
        background-color: var(--color-surface);
        box-shadow: var(--shadow-dropdown);
        z-index: 150;
        transform: translateX(-100%);
        transition: transform var(--transition-slow);
        display: flex;
        flex-direction: column;
        padding: 0;
        overflow-y: auto;
    }

    .primary-nav.is-open {
        transform: translateX(0);
    }

    .mobile-nav-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: var(--space-4) var(--space-5);
        border-bottom: 1px solid var(--color-border);
        background-color: var(--color-surface-subtle);
    }

    .mobile-nav-title {
        font-family: var(--font-heading);
        font-size: var(--font-size-md);
        font-weight: var(--font-weight-bold);
        color: var(--color-primary);
        letter-spacing: 0.1em;
        text-transform: uppercase;
    }

    .mobile-nav-close {
        font-size: 1.75rem;
        line-height: 1;
        color: var(--color-primary);
        padding: var(--space-1);
    }

    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        width: 100%;
        padding: var(--space-2) 0;
    }

    .nav-item {
        width: 100%;
    }

    .nav-link {
        display: block;
        width: 100%;
        padding: var(--space-3) var(--space-5);
        border-bottom: 1px solid var(--color-border);
        font-size: var(--font-size-sm);
    }

    .nav-link::after {
        display: none;
    }

    /* Product Details & Split Views */
    .product-detail-layout {
        display: flex;
        flex-direction: column;
        gap: var(--space-8);
    }

    /* Account Section Responsive Layout */
    .account-layout {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    /* Checkout & Cart Multi-Column Layouts */
    .checkout-layout {
        grid-template-columns: 1fr;
    }

    .cart-layout {
        display: flex;
        flex-direction: column;
        gap: var(--space-6);
    }

    /* Footer 2-Column Adaptations */
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-8);
    }

    /* Bespoke Gifting Flow */
    .gift-builder-layout {
        display: flex;
        flex-direction: column;
        gap: var(--space-6);
    }
}

/* ==========================================================================
   4. Tablets Portrait & Mobile Handhelds (Max-width: 767px)
   ========================================================================== */
@media (max-width: 767px) {
    :root {
        --container-padding: 1rem;
    }

    .header-container {
        height: 64px;
    }

    .brand-name-text {
        font-size: 1.25rem;
        letter-spacing: 0.1em;
    }

    .header-actions {
        gap: var(--space-2);
    }

    .action-btn {
        padding: var(--space-1);
    }

    /* Product Grid Adaptation */
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-3);
    }

    .product-card-content {
        padding: var(--space-3);
        gap: var(--space-1);
    }

    .product-card-title {
        font-size: var(--font-size-sm);
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .current-price {
        font-size: var(--font-size-sm);
    }

    /* Cart Items Stacking */
    .cart-item {
        grid-template-columns: 64px 1fr;
        gap: var(--space-3);
        align-items: start;
        position: relative;
    }

    .cart-item-image {
        width: 64px;
        height: 64px;
    }

    .cart-item-quantity {
        grid-column: 2;
        margin-top: var(--space-2);
    }

    .cart-item-total {
        grid-column: 2;
        text-align: left;
        margin-top: var(--space-1);
    }

    .cart-item-remove {
        position: absolute;
        top: var(--space-3);
        right: 0;
    }

    /* Newsletter Block Stacking */
    .newsletter-container {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-4);
    }

    .zenz-newsletter-form {
        width: 100%;
        max-width: none;
    }

    /* Footer 1-Column Stacking */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .footer-bottom-container {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: var(--space-3);
    }

    .footer-trust-notes {
        justify-content: center;
    }

    .footer-bottom-legal {
        justify-content: center;
    }

    /* Modals & Dialogs */
    .modal {
        padding: var(--space-2);
    }

    .modal-dialog {
        max-width: 100%;
        margin: 0;
    }

    .modal-body {
        padding: var(--space-4);
    }

    .modal-footer {
        padding: var(--space-3) var(--space-4);
    }

    /* Toast Placement */
    .toast-container {
        bottom: var(--space-3);
        right: var(--space-3);
        left: var(--space-3);
        max-width: none;
    }

    /* Generic Forms Multi-Column Reset */
    .form-grid,
    .form-row {
        display: flex;
        flex-direction: column;
        gap: var(--space-4);
    }

    /* Responsive Data Tables */
    .table-responsive {
        width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        margin-bottom: var(--space-4);
    }
}

/* ==========================================================================
   5. Compact Mobile Handhelds (Max-width: 480px)
   ========================================================================== */
@media (max-width: 480px) {
    /* Compact Headings */
    h1 { font-size: 1.5rem; }
    h2 { font-size: 1.25rem; }
    h3 { font-size: 1.125rem; }

    /* Single-Column Product Cards for Very Narrow Devices if Required */
    .product-grid-single-xs {
        grid-template-columns: 1fr;
    }

    /* Full-Width Buttons for Mobile Touch Conversion */
    .btn-mobile-full {
        width: 100%;
    }

    /* Newsletter Input Group Stacking */
    .newsletter-input-group {
        flex-direction: column;
    }

    .newsletter-submit-btn {
        width: 100%;
    }

    /* Quantity Selector Ergonomics */
    .quantity-selector {
        height: 38px;
    }

    .quantity-btn {
        width: 32px;
    }

    .quantity-input {
        width: 40px;
    }

    /* Gifting Options Alignment */
    .gift-box-selection {
        grid-template-columns: 1fr;
    }

    .gift-chocolates-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-2);
    }

    /* Tabs Horizontal Scrolling */
    .tab-list {
        gap: var(--space-4);
        padding-bottom: var(--space-1);
    }

    .tab-button {
        font-size: var(--font-size-xs);
        padding: var(--space-2) 0;
    }

    /* Address Grid */
    .address-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   6. Ultra-Compact Devices (Max-width: 359px)
   ========================================================================== */
@media (max-width: 359px) {
    :root {
        --container-padding: 0.75rem;
    }

    .brand-name-text {
        font-size: 1.1rem;
        letter-spacing: 0.05em;
    }

    .product-grid {
        grid-template-columns: 1fr;
    }

    .gift-chocolates-grid {
        grid-template-columns: 1fr;
    }

    .btn {
        padding: 0.625rem 1.125rem;
        font-size: var(--font-size-xs);
    }
}

/* ==========================================================================
   7. Device Orientation Considerations (Landscape on Mobile)
   ========================================================================== */
@media (max-height: 500px) and (orientation: landscape) {
    .site-header {
        position: relative;
    }

    .primary-nav {
        max-width: 280px;
    }

    .modal-body {
        max-height: calc(90vh - 100px);
    }
}

/* ==========================================================================
   8. Responsive Hero Media Hooks
   ========================================================================== */
.hero-media-desktop {
    display: block;
}

.hero-media-mobile {
    display: none;
}

@media (max-width: 767px) {
    .hero-media-desktop {
        display: none;
    }

    .hero-media-mobile {
        display: block;
    }
}

/* ==========================================================================
   9. Accessibility: Reduced Motion
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
    .primary-nav,
    .product-card,
    .product-card-image,
    .category-card-bg,
    .modal-dialog,
    .drawer-panel {
        transition: none !important;
        transform: none !important;
    }
}