/* ===================================================================================
    Banner Styles - main_banner.css
    Баннер на главной странице со стандартизированными переменными
    =================================================================================== */

/* Section */
#section-1 {
    height: 28em;
    color: var(--text-inverse);
    border-radius: var(--radius-base);
}

/* Content Slider */
.content-slider {
    position: relative;
    width: 100%;
    height: 100%;
}

.content-slider input {
    display: none;
}

/* Slider */
.content-slider .slider {
    position: relative;
    width: inherit;
    height: inherit;
    overflow: hidden;
    border-radius: var(--radius-base) var(--radius-base) 0 0;
}

/* Banner */
.content-slider .slider .banner {
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    z-index: 0;
    width: inherit;
    height: inherit;
    text-align: center;
    background-repeat: no-repeat;
    background-position: center center;
    transition: all var(--transition-slower);
}

/* Banner backgrounds */
.content-slider .slider #top-banner-1 {
    background: url('/static/home/images/banner_av.jpg') no-repeat center center;
    background-size: cover;
}

.content-slider .slider #top-banner-2 {
    background: url('/static/home/images/banner_it.jpg') no-repeat center center;
    background-size: cover;
}

.content-slider .slider #top-banner-3 {
    background: url('/static/home/images/banner_it_int.jpg') no-repeat center center;
    background-size: cover;
}

.content-slider .slider #top-banner-4 {
    background: url('/static/home/images/banner_ds.jpg') no-repeat center center;
    background-size: cover;
}

/* Banner Inner Wrapper */
.banner-inner-wrapper {
    width: 100%;
    padding: 0 var(--spacing-8);
    box-sizing: border-box;
    text-align: left;
    max-width: 40%;
}

.content-slider .slider .banner .banner-inner-wrapper {
    height: 100%;
    padding-top: var(--spacing-9);
    background: linear-gradient(90deg, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.4) 60%, transparent 100%);
}

.content-slider .slider .banner .banner-inner-wrapper p {
    padding-bottom: var(--spacing-5);
    font-size: var(--text-xl);
    text-transform: none;
}

.content-slider .slider .banner .banner-inner-wrapper h1 {
    font-size: var(--heading-h1);
    color: var(--text-inverse);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-4);
}

.content-slider .slider .banner .banner-inner-wrapper .line {
    display: block;
    width: 4em;
    height: 3px;
    margin: var(--spacing-4) auto;
    background: var(--text-inverse);
}

/* Learn More Button */
.content-slider .slider .banner .banner-inner-wrapper .learn-more-button {
    padding-bottom: var(--spacing-9);
    z-index: 15;
}

.content-slider .slider .banner .banner-inner-wrapper .learn-more-button a {
    padding: var(--spacing-2) var(--spacing-6);
    text-align: center;
    font-size: var(--text-base);
    color: var(--text-inverse);
    border-radius: var(--radius-md);
    background-color: var(--secondary-color);
    transition: all var(--transition-delayed);
    text-decoration: none;
    display: inline-block;
}

.content-slider .slider .banner .banner-inner-wrapper .learn-more-button a:hover {
    color: var(--color-black);
    background-color: #ffd700;
    transition: all var(--transition-slower);
}

/* Navigation */
.content-slider nav {
    position: absolute;
    bottom: 0;
    width: 100%;
    z-index: var(--z-base);
    text-align: center;
    padding-bottom: var(--spacing-3);
    background: linear-gradient(transparent, rgba(0,0,0,0.5));
}

.content-slider nav .controls {
    display: block;
    width: 100%;
    margin: 0 auto;
    color: var(--text-inverse);
}

/* Control Labels */
.content-slider nav .controls label {
    position: relative;
    display: inline-block;
    width: 20%;
    height: 3.1em;
    overflow: hidden;
    margin: 0 var(--spacing-3);
    padding-top: var(--spacing-4);
    text-align: left;
    text-transform: uppercase;
    font-size: var(--text-base);
    color: var(--text-inverse);
    font-weight: var(--font-weight-normal);
    cursor: pointer;
    transition: all var(--transition-slower);
}

/* Progressbar */
.content-slider nav .controls label .progressbar {
    position: absolute;
    top: 0;
    left: 0;
    height: 3px;
    width: 100%;
    background: rgba(255,255,255,0.3);
    z-index: 10;
    overflow: hidden;
}

.content-slider nav .controls label .progressbar-fill {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 0%;
    background: var(--secondary-color);
}

/* Label spans (numbers) */
.content-slider nav .controls label span {
    font-size: var(--text-xl);
    font-weight: var(--font-weight-bold);
}

.content-slider nav .controls label:hover {
    color: var(--secondary-color);
}

/* Checked states - show active banner */
.content-slider #banner1:checked ~ .slider #top-banner-1,
.content-slider #banner2:checked ~ .slider #top-banner-2,
.content-slider #banner3:checked ~ .slider #top-banner-3,
.content-slider #banner4:checked ~ .slider #top-banner-4 {
    opacity: 1;
    z-index: var(--z-base);
}

/* Checked states - active label */
.content-slider #banner1:checked ~ nav label:nth-of-type(1),
.content-slider #banner2:checked ~ nav label:nth-of-type(2),
.content-slider #banner3:checked ~ nav label:nth-of-type(3),
.content-slider #banner4:checked ~ nav label:nth-of-type(4) {
    cursor: default;
    color: var(--text-inverse);
    transition: all var(--transition-slower);
}

/* Checked states - progressbar background */
.content-slider #banner1:checked ~ nav label:nth-of-type(1) .progressbar,
.content-slider #banner2:checked ~ nav label:nth-of-type(2) .progressbar,
.content-slider #banner3:checked ~ nav label:nth-of-type(3) .progressbar,
.content-slider #banner4:checked ~ nav label:nth-of-type(4) .progressbar {
    background: var(--text-inverse);
}

/* Animation */
@keyframes progressBarFill {
    from {
        width: 0%;
    }
    to {
        width: 100%;
    }
}

.content-slider nav .controls label .progressbar-fill {
    animation: none;
    width: 0%;
}

.content-slider #banner1:checked ~ nav label:nth-of-type(1) .progressbar-fill,
.content-slider #banner2:checked ~ nav label:nth-of-type(2) .progressbar-fill,
.content-slider #banner3:checked ~ nav label:nth-of-type(3) .progressbar-fill,
.content-slider #banner4:checked ~ nav label:nth-of-type(4) .progressbar-fill {
    animation: progressBarFill 5s linear forwards;
}

/* Large Desktop */
@media (min-width: 1920px) {
    #section-1 {
        height: 32em;
    }

    .banner-inner-wrapper {
        max-width: 35%;
        padding: 0 var(--spacing-12);
    }

    .content-slider .slider .banner .banner-inner-wrapper h1 {
        font-size: 3rem;
    }
}

/* Tablet */
@media (max-width: 991px) {
    #section-1 {
        height: 24em;
    }

    .banner-inner-wrapper {
        max-width: 80%;
    }

    .content-slider .slider .banner .banner-inner-wrapper {
        padding-top: var(--spacing-8);
        padding-bottom: var(--spacing-6);
        background: linear-gradient(90deg, rgba(0,0,0,0.75) 0%, rgba(0,0,0,0.5) 70%, transparent 100%);
    }

    .content-slider .slider .banner .banner-inner-wrapper h1 {
        font-size: var(--heading-h2);
    }

    .content-slider nav {
        padding-bottom: var(--spacing-2);
        background: linear-gradient(transparent, rgba(0,0,0,0.4));
    }

    .content-slider nav .controls label {
        font-size: var(--text-sm);
    }

    .content-slider nav .controls label span {
        font-size: var(--text-base);
    }
}

/* Mobile */
@media (max-width: 767px) {
    #section-1 {
        height: 30em;
    }

    .banner-inner-wrapper {
        max-width: 100%;
        text-align: center;
        padding: 0 var(--spacing-4);
    }

    .content-slider .slider .banner .banner-inner-wrapper {
        padding-top: var(--spacing-4);
        padding-bottom: var(--spacing-10);
        background: linear-gradient(180deg, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.7) 100%);
    }

    .content-slider .slider .banner .banner-inner-wrapper .line {
        margin: var(--spacing-4) auto;
    }

    .content-slider .slider .banner .banner-inner-wrapper h1 {
        font-size: var(--heading-h2);
        margin-bottom: var(--spacing-2);
    }

    .content-slider .slider .banner .banner-inner-wrapper p {
        font-size: var(--text-lg);
        margin-bottom: var(--spacing-2);
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .content-slider .slider .banner .banner-inner-wrapper .learn-more-button {
        padding-bottom: var(--spacing-4);
    }

    .content-slider nav {
        margin-top: -1px;
        padding-top: var(--spacing-2);
        padding-bottom: var(--spacing-2);
        background: rgba(0,0,0,0.7);
        z-index: 10;
    }

    .content-slider nav .controls {
        width: 90%;
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        column-gap: var(--spacing-2);
        row-gap: var(--spacing-3);
    }

    .content-slider nav .controls label {
        width: 42%;
        margin: 0;
        font-size: var(--text-xs);
        height: 2.2em;
        padding-top: var(--spacing-1);
        text-align: center;
    }

    .content-slider nav .controls label:nth-child(2) {
        margin-bottom: 0;
    }

    .content-slider nav .controls label span {
        font-size: var(--text-sm);
    }

    .content-slider .slider .banner .banner-inner-wrapper .learn-more-button a {
        padding: var(--spacing-1) var(--spacing-4);
        font-size: var(--text-sm);
    }
}

/* Small mobile */
@media (max-width: 479px) {
    #section-1 {
        height: 24em;
    }

    .banner-inner-wrapper {
        padding: 0 var(--spacing-3);
    }

    .content-slider .slider .banner .banner-inner-wrapper {
        padding-top: var(--spacing-3);
        padding-bottom: var(--spacing-6);
    }

    .content-slider .slider .banner .banner-inner-wrapper h1 {
        font-size: var(--heading-h2-mobile);
    }

    .content-slider nav .controls label {
        font-size: var(--text-2xs);
        height: 2em;
    }

    .content-slider nav .controls label:nth-child(2) {
        margin-bottom: var(--spacing-1);
    }

    .content-slider nav .controls label span {
        font-size: var(--text-xs);
    }

    .content-slider nav {
        padding-bottom: var(--spacing-2);
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .content-slider .slider .banner {
        transition: none;
    }

    .content-slider nav .controls label {
        transition: none;
    }

    .content-slider #banner1:checked ~ nav label:nth-of-type(1) .progressbar-fill,
    .content-slider #banner2:checked ~ nav label:nth-of-type(2) .progressbar-fill,
    .content-slider #banner3:checked ~ nav label:nth-of-type(3) .progressbar-fill,
    .content-slider #banner4:checked ~ nav label:nth-of-type(4) .progressbar-fill {
        animation: none;
        width: 100%;
    }

    @keyframes progressBarFill {
        from {
            width: 0;
        }
        to {
            width: 100%;
        }
    }
}