/* Reset a základní styly */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-black: #000000;
    --primary-white: #ffffff;
    --bg-light: #fafafa;
    --bg-gray: #f5f5f5;
    --text-dark: #1a1a1a;
    --text-gray: #666666;
    --border-color: #e5e5e5;
    --accent-color: #000000;
    --hover-gray: #f0f0f0;
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-dark);
    background-color: var(--primary-white);
    line-height: 1.6;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Header a navigace */
header {
    background-color: var(--primary-white);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

/* Hamburger menu */
.menu-toggle {
    display: none;
}

.menu-icon {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
    z-index: 1001;
    position: relative;
    width: 25px;
    height: 19px;
}

.menu-icon span {
    width: 25px;
    height: 2px;
    background-color: var(--primary-black);
    transition: all 0.3s ease;
    display: block;
    transform-origin: center;
    position: absolute;
    left: 0;
}

.menu-icon span:nth-child(1) {
    top: 0;
}

.menu-icon span:nth-child(2) {
    top: 8.5px;
}

.menu-icon span:nth-child(3) {
    top: 17px;
}

#menu-toggle:checked ~ .menu-icon span:nth-child(1) {
    top: 8.5px;
    transform: rotate(45deg);
}

#menu-toggle:checked ~ .menu-icon span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

#menu-toggle:checked ~ .menu-icon span:nth-child(3) {
    top: 8.5px;
    transform: rotate(-45deg);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-black);
    text-decoration: none;
    letter-spacing: -0.5px;
    text-transform: uppercase;
}

/* Navigační menu */
nav {
    display: flex;
    align-items: center;
    position: relative;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

.nav-item {
    position: relative;
}

.nav-link {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 400;
    font-size: 0.9375rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0.5rem 0;
    display: block;
    transition: color 0.2s ease;
    position: relative;
}

.nav-link:hover {
    color: var(--text-gray);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--primary-black);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* Dropdown menu */
.dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--primary-white);
    border: 1px solid var(--border-color);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    padding: 1rem 0;
    margin-top: 1rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    list-style: none;
}

.nav-item:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: block;
    padding: 0.75rem 1.5rem;
    color: var(--text-dark);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 400;
    text-transform: none;
    letter-spacing: 0;
    transition: background-color 0.2s ease;
}

.dropdown-item:hover {
    background-color: var(--hover-gray);
}

.cart-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-black);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9375rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0.5rem 0;
    transition: opacity 0.2s ease;
}

.cart-link:hover {
    opacity: 0.6;
}

/* Main container */
main {
    width: 100%;
}

/* Hero sekce */
.hero {
    width: 100%;
    background-color: var(--bg-light);
    padding: 8rem 2rem;
    text-align: center;
    margin-bottom: 0;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 700;
    letter-spacing: -2px;
    margin-bottom: 1.5rem;
    color: var(--primary-black);
    line-height: 1.1;
}

.hero p {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-gray);
    font-weight: 400;
    letter-spacing: 0.5px;
}

/* Promo banner */
.promo-banner {
    background-color: var(--primary-black);
    color: var(--primary-white);
    text-align: center;
    padding: 1rem 2rem;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
}

/* Sekce */
.section {
    max-width: 1400px;
    margin: 0 auto;
    padding: 5rem 2rem;
}

.section-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--primary-black);
    letter-spacing: -1px;
    text-align: center;
    text-transform: uppercase;
}

/* Produkty grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.product-card {
    background-color: var(--primary-white);
    text-decoration: none;
    color: inherit;
    display: block;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
    opacity: 0.9;
}

.product-image-wrapper {
    width: 100%;
    aspect-ratio: 3/4;
    overflow: hidden;
    background-color: var(--bg-gray);
    margin-bottom: 1rem;
    position: relative;
}

.product-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.product-card:hover .product-image {
    transform: scale(1.05);
}

.product-info {
    text-align: left;
}

.product-name {
    font-size: 0.9375rem;
    font-weight: 400;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
    letter-spacing: 0.3px;
}

.product-price {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-black);
    letter-spacing: 0.5px;
}

/* Detail produktu */
.product-detail-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 4rem 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.product-detail-image-wrapper {
    width: 100%;
    aspect-ratio: 3/4;
    overflow: hidden;
    background-color: var(--bg-gray);
}

.product-detail-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-detail-info {
    padding-top: 1rem;
}

.product-detail-name {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--primary-black);
    letter-spacing: -1px;
    line-height: 1.2;
}

.product-detail-price {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--primary-black);
    letter-spacing: 0.5px;
}

.product-description {
    font-size: 0.9375rem;
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 2.5rem;
    max-width: 500px;
}

.size-selection {
    margin-bottom: 2.5rem;
}

.size-label {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1rem;
    display: block;
    color: var(--text-dark);
}

.size-options {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.size-option {
    width: 50px;
    height: 50px;
    border: 1px solid var(--border-color);
    background-color: var(--primary-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-dark);
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

.size-option:hover {
    border-color: var(--primary-black);
    background-color: var(--hover-gray);
}

.size-option.selected {
    border-color: var(--primary-black);
    background-color: var(--primary-black);
    color: var(--primary-white);
}

.btn {
    display: inline-block;
    padding: 1.25rem 3rem;
    background-color: var(--primary-black);
    color: var(--primary-white);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9375rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
    text-align: center;
    max-width: 400px;
}

.btn:hover {
    background-color: var(--text-gray);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background-color: var(--primary-black);
    color: var(--primary-white);
}

/* Košík */
.cart-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

.cart-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--primary-black);
    letter-spacing: -1px;
    text-transform: uppercase;
}

.cart-item {
    display: grid;
    grid-template-columns: 120px 1fr auto;
    gap: 2rem;
    padding: 2rem 0;
    border-bottom: 1px solid var(--border-color);
    align-items: center;
}

.cart-item:last-child {
    border-bottom: none;
}

.cart-item-image {
    width: 120px;
    height: 160px;
    object-fit: cover;
    background-color: var(--bg-gray);
}

.cart-item-info h3 {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.cart-item-info p {
    font-size: 0.875rem;
    color: var(--text-gray);
    margin-bottom: 0.5rem;
}

.cart-item-price {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary-black);
}

.cart-summary {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 2px solid var(--primary-black);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.cart-total {
    font-size: 1.25rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-dark);
}

.cart-total-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-black);
    margin-left: 1rem;
}

/* Formulář */
.form-container {
    max-width: 600px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

.form-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--primary-black);
    letter-spacing: -1px;
    text-transform: uppercase;
    text-align: center;
}

.form-group {
    margin-bottom: 2rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.75rem;
    font-weight: 500;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-dark);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--border-color);
    background-color: var(--primary-white);
    font-size: 1rem;
    font-family: inherit;
    color: var(--text-dark);
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-black);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-actions {
    margin-top: 3rem;
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

.form-actions .btn {
    max-width: none;
    width: auto;
    min-width: 200px;
}

/* LightBox galerie - CSS úpravy */
.lightbox {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(5px);
}

.lightbox.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox:focus {
    outline: none;
}

.lightbox-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    margin: auto;
}

.lightbox-image {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border: 3px solid var(--primary-white);
    border-radius: 8px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    pointer-events: none;
    user-select: none;
}

.lightbox-close {
    position: fixed;
    top: 24px;
    right: 24px;
    color: var(--primary-white);
    font-size: 1.8rem;
    font-weight: bold;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    transition: all 0.3s ease;
    border: 2px solid var(--primary-white);
    z-index: 10002;
}

.lightbox-close:hover {
    background-color: var(--primary-white);
    color: var(--primary-black);
    transform: rotate(90deg);
}

.lightbox-prev,
.lightbox-next {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    color: var(--primary-white);
    font-size: 1.8rem;
    font-weight: bold;
    cursor: pointer;
    padding: 0;
    line-height: 1;
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    border: 2px solid var(--primary-white);
    z-index: 10001;
}

.lightbox-prev {
    left: 32px;
}

.lightbox-next {
    right: 32px;
}

.lightbox-prev:hover,
.lightbox-next:hover {
    background-color: var(--primary-white);
    color: var(--primary-black);
    transform: translateY(-50%) scale(1.1);
}

/* Footer */
footer {
    background-color: var(--bg-light);
    padding: 4rem 2rem 2rem;
    margin-top: 6rem;
    border-top: 1px solid var(--border-color);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
}

.footer-section h3 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.75rem;
}

.footer-section a {
    color: var(--text-gray);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s ease;
}

.footer-section a:hover {
    color: var(--primary-black);
}

.footer-bottom {
    text-align: center;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-gray);
    font-size: 0.875rem;
}

/* Responzivní design - Mobile First */
@media (max-width: 768px) {
    .header-container {
        flex-direction: row;
        gap: 0;
        padding: 1rem;
    }

    .menu-icon {
        display: flex;
    }

    nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--primary-white);
        border-bottom: 1px solid var(--border-color);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        width: 100%;
    }

    #menu-toggle:checked ~ #main-nav {
        max-height: 1000px;
    }

    .nav-menu {
        flex-direction: column;
        gap: 0;
        width: 100%;
        padding: 1rem 0;
        text-align: left;
    }

    .nav-item {
        width: 100%;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-link {
        padding: 1rem 1.5rem;
        display: block;
    }

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

    .cart-link {
        padding: 1rem 1.5rem;
        display: block;
        border-bottom: 1px solid var(--border-color);
    }

    .dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        border-top: 1px solid var(--border-color);
        margin-top: 0;
        padding-left: 0;
        list-style: none;
        background-color: var(--bg-light);
        max-height: 500px;
        overflow: visible;
        transition: none;
    }

    .dropdown-item {
        padding: 0.75rem 2.5rem;
    }

    .hero {
        padding: 4rem 1.5rem;
    }

    .section {
        padding: 3rem 1.5rem;
    }

    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 1.5rem;
    }

    .product-detail-container {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 2rem 1.5rem;
    }

    .cart-item {
        grid-template-columns: 80px 1fr;
        gap: 1rem;
    }

    .cart-item-price {
        grid-column: 1 / -1;
        text-align: right;
        margin-top: 0.5rem;
    }

    .cart-summary {
        flex-direction: column;
        align-items: stretch;
    }

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

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

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

    /* LightBox šipky blíže k obrázku na mobilu */
    .lightbox-prev {
        left: 10px;
    }

    .lightbox-next {
        right: 10px;
    }
}

@media (max-width: 480px) {
    .header-container {
        padding: 0.75rem 1rem;
    }

    .logo {
        font-size: 1.25rem;
    }

    .products-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }

    .size-options {
        gap: 0.5rem;
    }

    .size-option {
        width: 45px;
        height: 45px;
        font-size: 0.8125rem;
    }

    .hero {
        padding: 3rem 1rem;
    }

    .section {
        padding: 2rem 1rem;
    }
}