@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;600;700&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-dark);
    background: var(--light-color);
    line-height: 1.6;
}

a {
    color: inherit;
    text-decoration: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.store-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

.store-header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-height: 72px;
}

.store-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.1rem;
}

.store-logo img {
    width: 44px;
    height: 44px;
}

.store-nav {
    display: flex;
    align-items: center;
    gap: 20px;
}

.store-nav a {
    font-weight: 500;
    color: var(--text-light);
    transition: var(--transition);
}

.store-nav a:hover,
.store-nav a.is-active {
    color: var(--primary-color);
}

.cart-link {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.cart-badge {
    position: absolute;
    top: -8px;
    right: -10px;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    border-radius: 999px;
    background: var(--gradient-brand);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.hero {
    background: var(--gradient-brand);
    color: var(--white);
    padding: 48px 0;
}

.hero h1 {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    margin-bottom: 12px;
}

.hero p {
    max-width: 640px;
    opacity: 0.95;
}

.section {
    padding: 40px 0 56px;
}

.section-title {
    font-size: 1.5rem;
    margin-bottom: 24px;
}

.search-bar {
    display: flex;
    gap: 12px;
    margin-bottom: 28px;
}

.search-bar input {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font: inherit;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 18px;
    border: none;
    border-radius: var(--border-radius);
    font: inherit;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: var(--gradient-brand);
    color: var(--white);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary-color);
    border: 1px solid var(--border-color);
}

.btn-ghost {
    background: transparent;
    color: var(--danger-color);
}

.catalog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 24px;
}

.catalog-state {
    padding: 48px 24px;
    text-align: center;
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    color: var(--text-light);
}

.catalog-state p {
    margin-top: 8px;
}

.product-card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.product-card-link {
    flex: 1;
}

.product-card-image {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    background: #eef1ff;
}

.product-card-image--placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 2rem;
}

.product-card-body {
    padding: 16px;
}

.product-card-title {
    font-size: 1rem;
    margin-bottom: 6px;
}

.product-card-code,
.product-card-price,
.cart-item-code {
    color: var(--text-light);
    font-size: 0.9rem;
}

.product-card-price {
    margin-top: 8px;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-dark);
}

.product-card-cart {
    margin: 0 16px 16px;
}

.product-card-add,
.product-qty-control,
.product-detail-add-form {
    width: 100%;
}

.product-qty-control {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 4px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--white);
}

.product-qty-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: none;
    border-radius: var(--border-radius);
    background: var(--primary-color);
    color: var(--white);
    font: inherit;
    cursor: pointer;
    transition: var(--transition);
}

.product-qty-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.product-qty-value {
    min-width: 2.5rem;
    text-align: center;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-dark);
}

.product-detail-add-form {
    display: flex;
    gap: 12px;
}

.product-detail-qty-input {
    width: 80px;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font: inherit;
}

.product-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    background: var(--white);
    padding: 32px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
}

.product-detail img {
    width: 100%;
    border-radius: var(--border-radius);
    object-fit: cover;
}

.product-detail h1 {
    font-size: 2rem;
    margin-bottom: 8px;
}

.product-detail-price {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin: 16px 0;
}

.product-detail-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

.product-detail-actions .product-qty-control {
    flex: 1;
}

.cart-layout,
.checkout-layout {
    display: grid;
    grid-template-columns: 1.4fr 0.8fr;
    gap: 24px;
}

.panel {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    padding: 24px;
}

.cart-item-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.cart-item-qty {
    width: 72px;
    padding: 8px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font: inherit;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    margin-top: 16px;
    font-size: 1.1rem;
    font-weight: 700;
}

.form-grid {
    display: grid;
    gap: 16px;
}

.form-grid label {
    display: grid;
    gap: 6px;
    font-weight: 500;
}

.form-grid input,
.form-grid textarea {
    padding: 12px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font: inherit;
}

.checkout-message {
    margin-top: 16px;
    padding: 12px 16px;
    border-radius: var(--border-radius);
}

.checkout-message--info {
    background: #e8f4fd;
    color: #0c5460;
}

.checkout-message--success {
    background: #e8f7ec;
    color: #155724;
}

.checkout-message--error {
    background: #fdecea;
    color: #721c24;
}

.store-footer {
    margin-top: 48px;
    padding: 24px 0;
    text-align: center;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
}

.store-social-links {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 12px;
}

.store-social-links a {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--primary-soft);
    color: var(--primary-color);
    transition: var(--transition);
}

.store-social-links a:hover {
    background: var(--primary-color);
    color: #fff;
}

.store-contact {
    margin-bottom: 8px;
    font-size: 0.9rem;
    color: var(--text-light);
}

.store-contact a {
    color: var(--primary-color);
}

.btn:focus-visible,
.store-nav a:focus-visible,
.search-bar input:focus-visible,
.form-grid input:focus-visible,
.form-grid textarea:focus-visible,
.product-qty-btn:focus-visible,
.cart-item-qty:focus-visible,
.product-detail-qty-input:focus-visible,
.category-chip:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.cart-badge--pulse {
    animation: cartBadgePulse 0.45s ease;
}

@keyframes cartBadgePulse {
    0% { transform: scale(1); }
    40% { transform: scale(1.35); }
    100% { transform: scale(1); }
}

.cart-summary-actions {
    display: grid;
    gap: 12px;
    margin-top: 24px;
}

.help-text {
    margin-top: 8px;
    font-size: 0.9rem;
    color: var(--text-light);
}

.catalog-state--empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.catalog-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.category-chip {
    padding: 6px 14px;
    border: 1px solid var(--border-color);
    border-radius: 999px;
    background: var(--white);
    color: var(--text-light);
    font: inherit;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.category-chip:hover,
.category-chip.is-active {
    border-color: var(--primary-color);
    background: var(--primary-soft);
    color: var(--primary-dark);
}

.product-card-category {
    display: inline-block;
    margin-bottom: 4px;
    padding: 2px 8px;
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary-dark);
    font-size: 0.75rem;
    font-weight: 600;
}

.search-bar-submit-label {
    display: inline;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
    font-size: 0.9rem;
    color: var(--text-light);
}

.breadcrumb a {
    color: var(--primary-color);
    font-weight: 500;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.stock-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 600;
}

.stock-badge--available {
    background: #e8f7ec;
    color: #155724;
}

.stock-badge--low {
    background: #fff3cd;
    color: #856404;
}

.stock-badge--out {
    background: #fdecea;
    color: #721c24;
}

.cart-item,
.checkout-item {
    display: grid;
    grid-template-columns: auto 1fr auto auto;
    gap: 12px;
    padding: 16px 0;
    border-bottom: 1px solid var(--border-color);
    align-items: center;
}

.checkout-item {
    grid-template-columns: auto 1fr auto;
}

.cart-item-thumb,
.checkout-item-thumb {
    width: 56px;
    height: 56px;
    border-radius: var(--border-radius);
    object-fit: cover;
    background: var(--primary-soft);
}

.cart-item-thumb--placeholder,
.checkout-item-thumb--placeholder {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.25rem;
}

.cart-item-info h3 {
    font-size: 1rem;
    margin-bottom: 4px;
}

.cart-item-subtotal {
    font-weight: 700;
    color: var(--primary-dark);
    text-align: right;
}

.checkout-steps {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.checkout-step:not(:last-child)::after {
    content: '→';
    margin-left: 8px;
    color: var(--border-color);
}

.checkout-step a {
    color: var(--primary-color);
}

.checkout-step--active {
    color: var(--text-dark);
    font-weight: 600;
}

.checkout-success {
    text-align: center;
    padding: 24px 16px;
}

.checkout-success-icon {
    font-size: 3rem;
    color: var(--success-color);
    margin-bottom: 16px;
}

.checkout-success h2 {
    margin-bottom: 8px;
}

.checkout-success-note {
    margin: 12px 0 24px;
    color: var(--text-light);
}

.store-toast-region {
    position: fixed;
    z-index: 200;
    left: 16px;
    right: 16px;
    bottom: calc(16px + env(safe-area-inset-bottom, 0px));
    pointer-events: none;
}

.store-toast {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 18px;
    background: var(--dark-color);
    color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    pointer-events: auto;
    animation: toastSlideIn 0.25s ease;
}

.store-toast-action {
    color: var(--white);
    font-weight: 600;
    white-space: nowrap;
    text-decoration: underline;
}

@keyframes toastSlideIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.whatsapp-fab {
    position: fixed;
    z-index: 150;
    right: 20px;
    bottom: calc(20px + env(safe-area-inset-bottom, 0px));
    width: 56px;
    height: 56px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: #25d366;
    color: var(--white);
    font-size: 1.6rem;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

.whatsapp-fab:hover {
    transform: scale(1.05);
}

.whatsapp-fab:focus-visible {
    outline: 2px solid #25d366;
    outline-offset: 3px;
}

@media (min-width: 769px) {
    .cart-layout > aside.panel,
    .checkout-layout > aside.panel {
        position: sticky;
        top: 88px;
        align-self: start;
    }

    .store-toast-region {
        left: auto;
        right: 24px;
        bottom: 24px;
        max-width: 360px;
    }
}

@media (max-width: 768px) {
    .store-header-content,
    .store-nav {
        flex-wrap: wrap;
    }

    .hero {
        padding: 28px 0;
    }

    .hero h1 {
        font-size: clamp(1.5rem, 5vw, 2rem);
    }

    .product-detail,
    .cart-layout,
    .checkout-layout {
        grid-template-columns: 1fr;
    }

    .cart-item,
    .checkout-item {
        grid-template-columns: auto 1fr;
    }

    .cart-item-actions {
        grid-column: 2;
    }

    .cart-item-subtotal {
        grid-column: 2;
        text-align: left;
    }

    .search-bar-submit-label {
        display: none;
    }

    .search-bar-submit {
        padding: 12px 14px;
    }

    body.has-product-sticky-cta {
        padding-bottom: 80px;
    }

    .product-detail-sticky-cta {
        position: fixed;
        z-index: 90;
        left: 0;
        right: 0;
        bottom: 0;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        padding: 12px 20px calc(12px + env(safe-area-inset-bottom, 0px));
        background: var(--white);
        border-top: 1px solid var(--border-color);
        box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.08);
    }

    .product-detail-sticky-cta .product-detail-price {
        margin: 0;
        font-size: 1.2rem;
    }

    .whatsapp-fab {
        bottom: calc(88px + env(safe-area-inset-bottom, 0px));
    }
}