/* Main Styles */

/* Container */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Header */
.header {
    background-color: var(--color-background);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: var(--z-header);
}

/* Scroll offset pro kotvy (anchor links) */
#battipav {
    scroll-margin-top: 165px;
}

#ntc {
    scroll-margin-top: 165px;
}

/* Upravit scroll offset když je hlavička schovaná */
.header__main--hidden ~ * #battipav,
.header__main--hidden ~ * #ntc {
    scroll-margin-top: 60px;
}

.header__main {
    padding: 18px 0;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
                height 0.35s cubic-bezier(0.4, 0, 0.2, 1),
                padding 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.header__main--hidden {
    transform: translateY(-100%);
    height: 0;
    padding: 0;
    margin: 0;
}

.header__content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
}

.header__logo img {
    height: 70px;
    width: auto;
}

.header__info {
    text-align: right;
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.header__official {
    font-size: 13px;
    color: var(--color-primary);
    font-weight: 700;
    letter-spacing: 0.3px;
    line-height: 1.2;
}

.header__distributor {
    font-weight: 600;
    color: #2c2c2c;
    font-size: 14px;
    margin-top: 1px;
    line-height: 1.2;
}

.header__contact {
    display: flex;
    align-items: center;
    gap: 0;
    margin-top: 2px;
    justify-content: flex-end;
}

.header__contact a {
    color: #2c2c2c;
    font-size: 13px;
    transition: color var(--transition-fast);
}

.header__contact a:hover {
    color: var(--color-primary);
}

/* Navigation */
.nav {
    background-color: var(--color-primary);
    position: relative;
}

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

.nav__item {
    position: relative;
}

.nav__link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: white;
    font-weight: 500;
    transition: background-color var(--transition-fast);
}

.nav__link:hover,
.nav__link.active {
    background-color: var(--color-primary-dark);
    color: white;
}

.nav__submenu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 250px;
    background-color: white;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
}

.nav__item:hover > .nav__submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav__submenu-link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text);
    border-bottom: 1px solid var(--color-accent);
    position: relative;
}

.nav__submenu-link:hover {
    background-color: var(--color-accent);
    color: var(--color-primary);
}

/* 3-level menu - submenu indikátor */
.nav__submenu-link.has-submenu::after {
    content: '›';
    position: absolute;
    right: var(--spacing-md);
    font-size: 20px;
    font-weight: bold;
    transition: transform var(--transition-fast);
}

/* 3-level menu - 3. úroveň submenu */
.nav__submenu .nav__submenu {
    position: absolute;
    top: 0;
    left: 100%;
    min-width: 280px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
}

/* 3-level menu - zobrazení při hoveru na 2. úroveň */
.nav__submenu li {
    position: relative;
}

.nav__submenu li:hover > .nav__submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* Mobile menu toggle */
.nav__toggle {
    display: none;
    background-color: var(--color-primary);
    color: white;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
}

/* Wrapper pro menu tlačítka */
.nav__controls {
    display: block;
    gap: 8px;
}

/* Tlačítko pro sbalení hlavičky */
.nav__header-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.15);
    color: white;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 12px;
    min-width: 40px;
    border: none;
    position: absolute;
    right: var(--container-padding);
    top: 50%;
    transform: translateY(-50%);
    transition: background-color var(--transition-fast);
}

.nav__header-toggle:hover {
    background-color: rgba(255, 255, 255, 0.25);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, rgba(234, 91, 12, 0.3) 0%, rgba(76, 86, 92, 0.3) 100%),
                url('../images/battipav/Textura BATTIPAV LOGO_ŠEDÁ.jpg') center/cover no-repeat;
    color: white;
    padding: var(--spacing-xxl) 0;
    text-align: center;
}

.hero__title {
    font-size: var(--font-size-h1);
    margin-bottom: var(--spacing-md);
    padding-top: 20px;
}

.hero__subtitle {
    font-size: var(--font-size-h3);
    font-weight: normal;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

.hero__cta {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: white;
    color: var(--color-primary);
    font-weight: bold;
    border-radius: var(--radius-md);
    transition: transform var(--transition-fast);
}

.hero__cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--color-primary-dark);
}

/* Section */
.section {
    padding: var(--spacing-xxl) 0;
}

.section--gray {
    background-color: var(--color-background-gray);
}

.section__header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

/* Highlighted variant for product categories */
.section__header--highlighted {
    background: linear-gradient(135deg, #fff5f0 0%, #ffe8dc 100%);
    padding: 20px;
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-primary);
}

.section__title {
    color: var(--color-secondary);
    margin-bottom: var(--spacing-sm);
}

.section__header--highlighted .section__title {
    margin-bottom: 0;
    margin-top: 0;
    line-height: 1.2;
    color: var(--color-primary);
    font-weight: 600;
}

.section__subtitle {
    color: var(--color-text-light);
    font-size: 18px;
}

/* Grid */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid--2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
    grid-template-columns: repeat(4, 1fr);
}

/* Cards */
.card {
    background-color: white;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.card__image {
    width: 100%;
    height: 250px;
    object-fit: contain;
    background-color: white;
}

.card__content {
    padding: var(--spacing-sm);
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.card__title {
    color: var(--color-secondary);
    margin-bottom: var(--spacing-xs);
}

.card__description {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

.card__link {
    display: inline-block;
    color: var(--color-primary);
    font-weight: 500;
}

.card__link:after {
    content: ' →';
}

/* Accent card variant with subtle orange styling */
.card--accent {
    background: linear-gradient(135deg, #fff5f0 0%, #ffe8dc 100%);
    border-left: 4px solid var(--color-primary);
    text-align: center;
}

.card--accent .card__title {
    color: var(--color-primary);
    font-weight: 600;
}

.card--accent .card__description {
    color: var(--color-text);
}

/* Product Card */
.product-card {
    text-align: center;
}

.product-card__features {
    list-style: disc;
    list-style-position: inside;
    text-align: left;
    color: var(--color-text-light);
    margin: var(--spacing-xs) 0;
}

.product-card__buttons {
    display: flex;
    flex-direction: row;
    gap: var(--spacing-xs);
    margin-top: auto;
    padding-top: var(--spacing-sm);
}

.product-card__buttons .btn {
    flex: 1;
}

.product-card__variants {
    margin: var(--spacing-sm) 0;
    padding: var(--spacing-xs) 0;
}

.product-card__variants-label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-secondary);
    font-size: 14px;
}

.product-card__variants-buttons {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
    justify-content: center;
}

.variant-btn {
    padding: 8px 16px;
    border: 2px solid var(--color-primary);
    background-color: white;
    color: var(--color-primary);
    border-radius: var(--radius-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 14px;
}

.variant-btn:hover {
    background-color: var(--color-accent);
    transform: translateY(-1px);
}

.variant-btn.active {
    background-color: var(--color-primary);
    color: white;
}

.variant-btn.active:hover {
    background-color: var(--color-primary-dark);
}

/* TOP Products Section */
.top-products {
    background: linear-gradient(135deg, #fff5f0 0%, #ffe8dc 100%);
    padding: var(--spacing-xl);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-xxl);
    border-left: 4px solid var(--color-primary);
}

.top-products__title {
    text-align: center;
    color: var(--color-primary);
    font-size: var(--font-size-h2);
    margin-bottom: var(--spacing-lg);
    margin-top: -15px;
    font-weight: 600;
}

.top-products__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

/* TOP Product Card */
.top-product-card {
    background: white;
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    border: 2px solid rgba(234, 91, 12, 0.3);
}

.top-product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(234, 91, 12, 0.6);
}

.top-product-card img {
    width: 100%;
    height: 150px;
    object-fit: contain;
    margin-bottom: var(--spacing-sm);
}

.top-product-card h3 {
    color: var(--color-secondary);
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-sm);
    min-height: 40px;
}

.top-product-card .btn {
    width: 100%;
}

/* Flip Card */
.card-flip-container {
    perspective: 1000px;
    height: 100%;
}

.card-flip-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.6s ease;
    transform-style: preserve-3d;
}

.card-flip-inner.flipped {
    transform: rotateY(180deg);
}

.card-flip-container .card-front,
.card-flip-container .card-back {
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

.card-flip-container .card-front {
    position: relative;
}

.card-flip-container .card-back {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    transform: rotateY(180deg);
    overflow-y: auto;
}

.card-flip-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 2;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid var(--color-primary);
    background-color: white;
    color: var(--color-primary);
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
    line-height: 1;
    padding: 0;
}

.card-flip-btn--front {
    font-family: Georgia, 'Times New Roman', serif;
    font-style: italic;
}

.card-flip-inner.flipped .card-flip-btn--front {
    visibility: hidden;
}

.card-flip-btn:hover {
    background-color: var(--color-primary);
    color: white;
    transform: scale(1.1);
}

.card-back__content {
    padding: var(--spacing-md);
    text-align: left;
}

.card-back__content h3 {
    color: var(--color-primary);
    font-size: 18px;
    margin-bottom: var(--spacing-sm);
    padding-right: 36px;
}

.card-back__content p + h3 {
    margin-top: var(--spacing-sm);
    padding-right: 0;
}

.card-back__content p {
    color: var(--color-text);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: var(--spacing-sm);
}

.card-back__content p:last-child {
    margin-bottom: 0;
}

.card-flip-container .card-front:hover {
    transform: none;
    box-shadow: var(--shadow-sm);
}

.card-flip-container .card-back:hover {
    transform: rotateY(180deg);
    box-shadow: var(--shadow-sm);
}

.card-flip-container .card-front {
    pointer-events: auto;
}

.card-flip-container .card-back {
    pointer-events: none;
}

.card-flip-inner.flipped .card-front {
    pointer-events: none;
}

.card-flip-inner.flipped .card-back {
    pointer-events: auto;
}

/* Subcategory Headers */
.subcategory-header {
    background: linear-gradient(135deg, #505050 0%, #3a3a3a 100%);
    border-radius: var(--radius-md);
    padding: 20px;
    margin: var(--spacing-xl) 0 var(--spacing-lg) 0;
    text-align: left;
    scroll-margin-top: 175px;
}

.subcategory-title {
    color: white;
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-xs);
}

.subcategory-description {
    color: rgba(255, 255, 255, 0.85);
    font-size: var(--font-size-small);
    margin: 0;
}

.subcategory-empty {
    text-align: center;
    color: var(--color-text-light);
    font-style: italic;
    margin-bottom: var(--spacing-xxl);
}

/* Button */
.btn {
    display: inline-block;
    padding: 10px var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-weight: 500;
    text-align: center;
    transition: all var(--transition-fast);
    cursor: pointer;
}

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

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

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

.btn--secondary:hover {
    background-color: #1a1a1a;
    color: white;
}

.btn--outline {
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
    background-color: transparent;
}

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

/* Footer */
.footer {
    background-color: var(--color-secondary);
    color: white;
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer__main {
    margin-bottom: var(--spacing-lg);
}

.footer__title {
    color: white;
    margin-bottom: var(--spacing-md);
}

.footer__link {
    display: block;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-xs);
}

.footer__link:hover {
    color: white;
}

#footer-distributor-name {
    white-space: nowrap;
}

.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-small);
}

/* About Section */
.about__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.about__image {
    width: 100%;
    border-radius: var(--radius-md);
}

/* Contact Form */
.form__group {
    margin-bottom: var(--spacing-md);
}

.form__label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}

.form__input,
.form__textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid #ddd;
    border-radius: var(--radius-sm);
    transition: border-color var(--transition-fast);
}

.form__input:focus,
.form__textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form__textarea {
    min-height: 150px;
    resize: vertical;
}

/* Responsive */
@media (max-width: 992px) {
    .grid--3 {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid--4 {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .top-products__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav__controls {
        display: flex;
        justify-content: space-between;
        align-items: center;
        width: 100%;
    }

    .nav__toggle {
        display: block;
    }

    .nav__header-toggle {
        position: static;
        transform: none;
        display: flex;
        align-items: center;
        justify-content: center;
        background-color: rgba(255, 255, 255, 0.15);
        border-radius: 4px;
        margin: 4px;
        padding: 16px 12px;
        min-width: 40px;
    }

    .nav__list {
        display: none;
        flex-direction: column;
        max-height: calc(100vh - 120px);
        overflow-y: auto;
    }

    .nav__list.active {
        display: flex;
    }

    .nav__item {
        width: 100%;
    }

    .nav__submenu {
        position: static;
        display: none;
        transform: none;
        box-shadow: none;
        background-color: var(--color-primary-dark);
    }

    /* Vypnout hover efekty pro submenu na mobilu */
    .nav__item:hover > .nav__submenu,
    .nav__submenu li:hover > .nav__submenu {
        display: none;
    }

    .nav__submenu.open {
        display: block !important;
        opacity: 1;
        visibility: visible;
    }

    /* Wrapper pro link + toggle button */
    .nav__link-wrapper {
        display: flex;
        width: 100%;
        background-color: var(--color-primary);
    }

    .nav__link-wrapper .nav__link,
    .nav__link-wrapper .nav__submenu-link {
        flex: 1;
    }

    /* Toggle button pro rozbalení - obdélníček */
    .nav__toggle-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 0 12px;
        cursor: pointer;
        min-width: 40px;
        color: white;
        background-color: rgba(255, 255, 255, 0.15);
        border-radius: 4px;
        margin: 4px;
    }

    .nav__toggle-btn::after {
        content: '▼';
        font-size: 10px;
        transition: transform 0.2s;
    }

    .nav__toggle-btn.open::after {
        transform: rotate(180deg);
    }

    /* Aktivní stránka - celý řádek včetně toggle buttonu */
    .nav__link-wrapper:has(.nav__link.active),
    .nav__link-wrapper:has(.nav__submenu-link.active) {
        background-color: var(--color-primary-dark);
    }

    /* Submenu wrapper */
    .nav__submenu .nav__link-wrapper {
        background-color: var(--color-primary-dark);
    }

    .nav__submenu-link {
        color: white;
        border-color: rgba(255, 255, 255, 0.1);
    }

    /* 3-level menu na mobilu */
    .nav__submenu .nav__submenu {
        position: static;
        background-color: rgba(0, 0, 0, 0.2);
        transform: none;
        opacity: 1;
        visibility: visible;
    }

    .nav__submenu .nav__submenu .nav__submenu-link {
        font-size: 14px;
    }

    /* 3. úroveň wrapper */
    .nav__submenu .nav__submenu .nav__link-wrapper {
        background-color: rgba(0, 0, 0, 0.2);
    }

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

    .header__info {
        text-align: center;
    }

    .header__contact {
        justify-content: center;
    }

    .grid--2,
    .grid--3,
    .grid--4 {
        grid-template-columns: 1fr;
    }

    .top-products__grid {
        grid-template-columns: 1fr;
    }
}

/* Timeline - Historie (cik-cak layout) */
.about__history {
    margin-top: var(--spacing-xxl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-accent);
}

.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

/* Vertikální čára uprostřed */
.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(to bottom, var(--color-primary), var(--color-secondary));
    border-radius: 4px;
}

.timeline__item {
    position: relative;
    width: 50%;
    padding: 0 40px var(--spacing-xl) 0;
    box-sizing: border-box;
}

/* Sudé položky vpravo */
.timeline__item:nth-child(even) {
    margin-left: 50%;
    padding: 0 0 var(--spacing-xl) 40px;
}

.timeline__item:last-child {
    padding-bottom: 0;
}

/* Bod na čáře */
.timeline__item::before {
    content: '';
    position: absolute;
    right: -12px;
    top: 8px;
    width: 20px;
    height: 20px;
    background-color: var(--color-primary);
    border: 4px solid white;
    border-radius: 50%;
    box-shadow: 0 0 0 4px var(--color-primary);
    z-index: 1;
}

.timeline__item:nth-child(even)::before {
    right: auto;
    left: -12px;
}

/* Spojovací čára ke kartě */
.timeline__item::after {
    content: '';
    position: absolute;
    right: 0;
    top: 16px;
    width: 28px;
    height: 3px;
    background-color: var(--color-primary);
}

.timeline__item:nth-child(even)::after {
    right: auto;
    left: 0;
}

.timeline__year {
    display: inline-block;
    background-color: var(--color-primary);
    color: white;
    padding: 6px 16px;
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 15px;
    margin-bottom: var(--spacing-xs);
}

.timeline__content {
    background: linear-gradient(135deg, #fff5f0 0%, #ffe8dc 100%);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.timeline__item:nth-child(even) .timeline__content {
    border-left: none;
    border-right: 4px solid var(--color-primary);
}

.timeline__content strong {
    color: var(--color-secondary);
    font-size: 17px;
    display: block;
    margin-bottom: var(--spacing-xs);
}

.timeline__content p {
    color: var(--color-text);
    margin: 0 0 var(--spacing-xs) 0;
    font-size: 14px;
    line-height: 1.6;
}

.timeline__content p:last-of-type {
    margin-bottom: 0;
}

.timeline__image-wrapper {
    margin-top: var(--spacing-sm);
    width: 100%;
    height: 200px;
    overflow: hidden;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: white;
}

.timeline__image {
    height: 100%;
    width: auto;
    max-width: none;
}

/* Timeline - responzivita */
@media (max-width: 768px) {
    .timeline::before {
        left: 12px;
        transform: none;
    }

    .timeline__item,
    .timeline__item:nth-child(even) {
        width: 100%;
        margin-left: 0;
        padding: 0 0 var(--spacing-lg) 40px;
    }

    .timeline__item::before,
    .timeline__item:nth-child(even)::before {
        left: 4px;
        right: auto;
        width: 16px;
        height: 16px;
    }

    .timeline__item::after,
    .timeline__item:nth-child(even)::after {
        left: 20px;
        right: auto;
        width: 20px;
    }

    .timeline__content,
    .timeline__item:nth-child(even) .timeline__content {
        border-left: 3px solid var(--color-primary);
        border-right: none;
    }

}