/* ============================================================
   CloudyBreeze E-Commerce System
   Responsive Stylesheet
   ============================================================
   Breakpoints:
   - 1024px: Tablet landscape / Small desktop
   - 768px:  Tablet portrait
   - 480px:  Mobile landscape / Large phone
   - 360px:  Small phone
   ============================================================ */

/* ============================================================
   Tablet Landscape / Small Desktop (max-width: 1024px)
   ============================================================ */
@media (max-width: 1024px) {

    /* Products Grid */
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    /* Categories Grid */
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Benefits Grid */
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Values Grid */
    .values-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Footer Grid */
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-xl);
    }

    /* Product Detail */
    .product-detail-layout {
        gap: var(--spacing-2xl);
    }

    /* Checkout */
    .checkout-layout {
        gap: var(--spacing-2xl);
    }

    /* Contact */
    .contact-layout {
        gap: var(--spacing-2xl);
    }

    /* Catalog */
    .catalog-layout {
        grid-template-columns: 220px 1fr;
        gap: var(--spacing-xl);
    }
}

/* ============================================================
   Tablet Portrait (max-width: 768px)
   ============================================================ */
@media (max-width: 768px) {

    /* Typography */
    :root {
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.75rem;
        --font-size-2xl: 1.5rem;
    }

    /* Container */
    .container {
        padding: 0 var(--spacing-md);
    }

    /* Header / Navigation */
    .nav-toggle {
        display: flex;
    }

    .nav-list {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        flex-direction: column;
        background-color: var(--color-white);
        border-bottom: 1px solid var(--color-light-gray);
        box-shadow: var(--shadow-lg);
        padding: var(--spacing-md);
        gap: 0;
    }

    .nav-list.open {
        display: flex;
    }

    .nav-link {
        padding: var(--spacing-md);
        font-size: var(--font-size-base);
    }

    /* Hero Section */
    .hero-section {
        height: 480px;
    }

    .hero-title {
        font-size: var(--font-size-4xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-base);
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
    }

    /* Products Grid */
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }

    /* Categories Grid */
    .categories-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-md);
    }

    /* Benefits Grid */
    .benefits-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-lg);
    }

    .benefit-card {
        padding: var(--spacing-lg);
    }

    .benefit-icon {
        width: 60px;
        height: 60px;
    }

    /* Product Detail */
    .product-detail-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .product-gallery {
        position: static;
    }

    .product-title {
        font-size: var(--font-size-2xl);
    }

    .product-price-lg {
        font-size: var(--font-size-2xl);
    }

    /* Checkout */
    .checkout-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .checkout-summary {
        position: static;
        order: -1;
    }

    .form-row-2col {
        grid-template-columns: 1fr;
    }

    /* Tracking */
    .tracking-input-group {
        flex-direction: column;
    }

    .tracking-btn {
        width: 100%;
    }

    /* Order Details */
    .order-details-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .order-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }

    /* Order Progress */
    .order-progress {
        flex-wrap: wrap;
        gap: var(--spacing-md);
    }

    .order-progress::before {
        display: none;
    }

    .progress-step {
        flex: 0 0 auto;
        flex-direction: row;
        gap: var(--spacing-sm);
        min-width: 30%;
    }

    /* Contact */
    .contact-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    /* Catalog */
    .catalog-layout {
        grid-template-columns: 1fr;
    }

    .catalog-sidebar {
        position: relative;
    }

    .filter-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: var(--spacing-sm);
    }

    .filter-panel {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        z-index: 50;
        background-color: var(--color-white);
        border: 1px solid var(--color-light-gray);
        border-radius: var(--radius-md);
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        margin-top: var(--spacing-xs);
    }

    .filter-panel.open {
        display: block;
    }

    /* About Page */
    .about-story-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .about-story-image {
        order: -1;
    }

    /* Values Grid */
    .values-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-lg);
    }

    .value-card {
        padding: var(--spacing-lg);
    }

    .value-icon {
        width: 60px;
        height: 60px;
    }

    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-xl);
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }

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

    .newsletter-btn {
        width: 100%;
    }

    /* Sections */
    .featured-section,
    .categories-section,
    .benefits-section,
    .newsletter-section {
        padding: var(--spacing-3xl) 0;
    }

    .section-header {
        margin-bottom: var(--spacing-2xl);
    }

    .section-footer {
        margin-top: var(--spacing-2xl);
    }

    /* Payment Options */
    .payment-option {
        padding: var(--spacing-md);
    }

    /* Policy Pages */
    .policy-content {
        padding: 0;
    }

    /* FAQ */
    .faq-group-title {
        font-size: var(--font-size-xl);
    }

    /* Error Page */
    .error-code {
        font-size: 6rem;
    }

    .error-actions {
        flex-direction: column;
    }

    .error-actions .btn {
        width: 100%;
    }
}

/* ============================================================
   Mobile Landscape / Large Phone (max-width: 480px)
   ============================================================ */
@media (max-width: 480px) {

    /* Typography */
    :root {
        --font-size-5xl: 2rem;
        --font-size-4xl: 1.75rem;
        --font-size-3xl: 1.5rem;
        --font-size-2xl: 1.25rem;
    }

    /* Hero Section */
    .hero-section {
        height: 400px;
    }

    .hero-title {
        font-size: var(--font-size-4xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-sm);
    }

    /* Products Grid */
    .products-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-sm);
    }

    .product-card-body {
        padding: var(--spacing-md);
    }

    .product-card-title {
        font-size: var(--font-size-sm);
    }

    .product-price {
        font-size: var(--font-size-base);
    }

    /* Categories Grid */
    .categories-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    /* Benefits Grid */
    .benefits-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .benefit-card {
        padding: var(--spacing-md);
    }

    /* Values Grid */
    .values-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .value-card {
        padding: var(--spacing-md);
    }

    /* Product Detail */
    .gallery-thumbnails {
        gap: var(--spacing-xs);
    }

    .gallery-thumbnail {
        width: 60px;
        height: 60px;
    }

    .product-pricing {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }

    .variants-options {
        gap: var(--spacing-xs);
    }

    .variant-option {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-xs);
    }

    .product-actions .btn {
        width: 100%;
    }

    /* Checkout Success */
    .success-actions {
        flex-direction: column;
    }

    .success-actions .btn {
        width: 100%;
    }

    /* Cart Items */
    .cart-item {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .cart-item-image {
        width: 100%;
        height: 120px;
    }

    /* Order Progress */
    .progress-step {
        min-width: 45%;
    }

    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .footer-brand,
    .footer-links,
    .footer-contact {
        text-align: center;
    }

    .footer-social {
        justify-content: center;
    }

    .footer-contact-item {
        justify-content: center;
    }

    .footer-logo {
        margin: 0 auto var(--spacing-md);
    }

    /* Page Header */
    .page-header {
        padding: var(--spacing-2xl) 0;
    }

    .page-title {
        font-size: var(--font-size-3xl);
    }

    /* Form Fieldset */
    .form-fieldset {
        padding: var(--spacing-md);
    }

    /* Contact */
    .contact-detail-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    /* Tracking */
    .tracking-input {
        font-size: var(--font-size-base);
        padding: var(--spacing-md);
    }

    /* Error Page */
    .error-code {
        font-size: 4rem;
    }

    /* Breadcrumb */
    .breadcrumb {
        font-size: var(--font-size-xs);
    }
}

/* ============================================================
   Small Phone (max-width: 360px)
   ============================================================ */
@media (max-width: 360px) {

    /* Products Grid */
    .products-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    /* Order Progress */
    .progress-step {
        min-width: 100%;
    }

    /* Header */
    .logo {
        height: 32px;
    }

    /* Buttons */
    .btn-lg {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: var(--font-size-base);
    }

    /* Policy Content */
    .policy-content {
        font-size: var(--font-size-sm);
    }

    /* FAQ */
    .faq-question {
        font-size: var(--font-size-sm);
    }
}

/* ============================================================
   Print Styles
   ============================================================ */
@media print {

    .site-header,
    .site-footer,
    .newsletter-section,
    .cart-link,
    .nav-toggle,
    .btn,
    .filter-toggle,
    .filter-panel,
    .pagination {
        display: none !important;
    }

    body {
        font-size: 12pt;
        color: #000;
        background: #fff;
    }

    .container {
        max-width: 100%;
        padding: 0;
    }

    a {
        color: #000;
        text-decoration: underline;
    }

    .order-details-card,
    .checkout-summary {
        border: 1px solid #ccc;
        box-shadow: none;
    }
}