/* ─────────────────────────────────────────
   konzepte.css  –  Konzepte page styles
   Reuses CSS variables from main.css
───────────────────────────────────────── */

/* ── Shared ── */

.kz-page {
    flex: 1;
    width: 100%;
}

/* ── Carousel positioning (reuses .carousel, .left, .middle from main.css) ── */

.kz-carousel {
    margin-top: 40px;
    position: relative;    /* needed for absolute children */
}

.carousel-subtitle-row {
    position: absolute;
    width: 550px;
    height: 30px;
    text-align: center;
    margin-left: 215px;    /* centres under the middle image */
    bottom: 0;
}

/* ── Divider ── */

.kz-divider {
    margin-top: 30px;
    width: 60%;
}

/* ── Tab bar ── */

.kz-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin: 32px auto 0;
    max-width: 800px;
    flex-wrap: wrap;
    padding: 0 16px;
}

.kz-tab {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    padding: 10px 24px;
    border: none;
    background: transparent;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: border-color var(--transition-fast), color var(--transition-fast);
    font-family: inherit;
}

.kz-tab-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--font-text);
    text-decoration: underline;
    text-decoration-color: transparent;
    transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
}

.kz-tab-sub {
    font-size: 14px;
    font-weight: 500;
    color: var(--font-headline);
}

.kz-tab:hover .kz-tab-title {
    color: var(--color-signal);
}

.kz-tab--active .kz-tab-title {
    color: var(--color-signal);
    text-decoration-color: var(--color-signal);
}

.kz-tab--active {
    border-bottom-color: var(--color-signal);
}

/* ── Content area ── */

.kz-content {
    max-width: 1100px;
    margin: 32px auto 40px;
    padding: 0 32px;
}

/* ── LKK Table ── */

.kz-table-wrapper {
    width: 100%;
    overflow-x: auto;
    margin-top: 16px;
}

.kz-lkk-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 15px;
    font-family: inherit;
}

.kz-lkk-table th,
.kz-lkk-table td {
    border: 1px solid rgba(0, 0, 0, 0.15);
    padding: 10px 14px;
    vertical-align: top;
    color: var(--font-text);
    font-weight: 500;
}

.kz-lkk-table thead th {
    background: var(--background-dark);
    font-weight: 700;
    font-size: 14px;
    color: var(--font-headline);
}

.kz-table-hint {
    font-weight: 600;
    color: var(--color-signal);
}

.kz-category-cell {
    width: 220px;
    min-width: 180px;
}

.kz-category-cell strong {
    font-size: 14px;
    font-weight: 800;
    color: var(--font-headline);
    letter-spacing: 0.04em;
}

.kz-category-cell small {
    font-size: 12px;
    color: var(--font-light-text);
}

.kz-strategy-cell {
    line-height: 1.8;
}

.kz-strategy {
    cursor: pointer;
    font-weight: 500;
    color: var(--font-text);
    transition: color var(--transition-fast), font-weight var(--transition-fast);
    border-radius: 3px;
    padding: 1px 2px;
}

.kz-strategy:hover {
    color: var(--color-signal);
}

.kz-strategy--active {
    font-weight: 800;
    color: var(--color-signal);
    background: var(--color-signal-dim);
    padding: 1px 4px;
    border-radius: 4px;
}

.kz-sep {
    color: var(--font-light-text);
    user-select: none;
}

/* ── Video grid ── */

.kz-video-grid {
    width: 100%;
    height: 460px;
    overflow-y: scroll;
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    margin-top: 20px;
    padding-bottom: 8px;
}

.kz-video-card {
    width: 330px;
    height: 410px;
    background-color: var(--background-dark);
    margin-left: 26px;
    margin-bottom: 20px;
    border-radius: 5px;
    filter: drop-shadow(rgba(250, 130, 11, 0.31) 0px 0px 5px);
    position: relative;
    cursor: pointer;
    flex-shrink: 0;
    transition: filter var(--transition-fast);
}

.kz-video-card:hover {
    filter: drop-shadow(rgba(250, 130, 11, 0.6) 0px 0px 8px);
}

.kz-thumbnail {
    width: 330px;
    height: 270px;
    border-radius: 5px;
    overflow: hidden;
}

.kz-thumbnail img {
    width: 330px;
    height: 260px;
    border-radius: 5px;
    object-fit: cover;
    filter: drop-shadow(0px 0px 2px);
    display: block;
}

.kz-thumbnail-overlay {
    position: absolute;
    top: 0;
    left: 0;
    height: 270px;
    width: 330px;
    opacity: 0;
    transition: opacity 0.2s linear;
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    box-sizing: border-box;
}

.kz-thumbnail:hover .kz-thumbnail-overlay {
    opacity: 1;
}

.kz-thumbnail-overlay p {
    color: #000;
    font-size: 15px;
    font-weight: 500;
    text-align: left;
    margin: 0;
}

.kz-video-info {
    padding: 6px 10px 0;
}

.kz-video-info h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--font-headline);
    margin: 4px 0 2px;
    line-height: 1.2;
}

.kz-video-info h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--font-light-text);
    margin: 6px 0 2px;
}

.kz-video-info ul {
    margin: 0;
    padding-left: 18px;
}

.kz-video-info li {
    font-size: 13px;
    font-weight: 500;
    color: var(--font-text);
    line-height: 1.4;
    margin-top: 3px;
}

/* ── Literature list ── */

.kz-lit-block {
    margin-top: 28px;
}

.kz-lit-heading {
    font-weight: 800;
    font-size: 18px;
    color: var(--font-headline);
    text-align: left;
    margin-bottom: 16px;
}

.kz-lit-subheading {
    font-size: 17px;
    font-weight: 600;
    color: var(--font-headline);
    display: block;
    margin-bottom: 12px;
}

.kz-ref {
    font-size: 15px;
    font-weight: 500;
    color: var(--font-text);
    line-height: 1.6;
    margin: 0 0 16px;
}

.kz-ref a {
    color: var(--color-signal);
    text-decoration: underline;
}

/* ─────────────────────────────────────────
   MOBILE  (< 1050px)
───────────────────────────────────────── */

@media only screen and (max-width: 1049px) {

    /* Hide side images on mobile — show only middle */
    .kz-carousel .left {
        display: none;
    }

    .kz-carousel {
        width: min(100%, 600px);
        height: auto;
        margin: 8px auto 0;
    }

    .carousel-subtitle-row {
        position: static;
        width: 100%;
        margin: 4px 0 0;
        text-align: center;
    }

    .kz-divider {
        width: 90%;
        margin-top: 16px;
    }

    .kz-tabs {
        gap: 4px;
        margin-top: 20px;
        padding: 0 8px;
    }

    .kz-tab {
        padding: 8px 12px;
    }

    .kz-tab-title {
        font-size: 14px;
    }

    .kz-content {
        padding: 0 16px;
        margin-top: 20px;
    }

    /* Table scrolls horizontally */
    .kz-lkk-table {
        font-size: 13px;
    }

    .kz-category-cell {
        width: 100px;
        min-width: 80px;
    }

    /* Video grid stacks */
    .kz-video-grid {
        height: auto;
        max-height: 460px;
        flex-direction: column;
        align-items: center;
    }

    .kz-video-card {
        margin-left: 0;
    }
}