/* ==========================================================================
   Diver on Tour – Wissen Rotes Meer
   Datei: /assets/css/wissen-rotes-meer.css
   Seite: /wissen-rotes-meer.html
   ========================================================================== */


/* Grundstruktur
   ========================================================================== */

.dot-knowledge-page {
    width: 100%;
    overflow-x: hidden;
    background: #ffffff;
    color: #17313b;
}

.dot-container {
    width: min(1120px, 92%);
    margin: 0 auto;
}


/* Hero-Video
   ========================================================================== */

.dot-hero-video {
    position: relative;
    height: 520px;
    min-height: 520px;
    overflow: hidden;
    display: flex;
    align-items: center;
    background: #001f2e;
}

.dot-hero-video__media {
    position: absolute;
    inset: 0;
    z-index: 1;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.dot-hero-video__overlay {
    position: absolute;
    inset: 0;
    z-index: 2;
    background:
        linear-gradient(
            180deg,
            rgba(0, 20, 35, 0.35) 0%,
            rgba(0, 35, 55, 0.62) 100%
        );
}

.dot-hero-video__content {
    position: relative;
    z-index: 3;
    width: min(1100px, 90%);
    max-width: 800px;
    margin: 0 auto;
    text-align: left;
    color: #ffffff;
}

.dot-kicker {
    margin: 0 0 16px;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: #ffffff;
}

.dot-hero-video__content h1 {
    margin: 0 0 20px;
    font-size: clamp(1.9rem, 3.5vw, 3.2rem);
    line-height: 1.15;
    font-weight: 800;
    color: #ffffff;
}

.dot-hero-text {
    max-width: 800px;
    margin: 0;
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    line-height: 1.7;
    color: #ffffff;
}


/* Intro
   ========================================================================== */

.dot-knowledge-intro {
    padding: 80px 0 70px;
    background: #ffffff;
}

.dot-knowledge-intro h2 {
    max-width: 900px;
    margin: 0 0 24px;
    font-size: clamp(1.9rem, 3vw, 2.8rem);
    line-height: 1.18;
    color: #003a5d;
}

.dot-knowledge-intro p {
    max-width: 930px;
    margin: 0 0 18px;
    font-size: 1.08rem;
    line-height: 1.75;
}


/* Video-Sektion
   ========================================================================== */

.dot-video-section {
    padding: 85px 0;
    background: #f4f9fc;
}

.dot-video-section h2 {
    margin: 0 0 20px;
    text-align: center;
    font-size: clamp(1.9rem, 3vw, 2.8rem);
    line-height: 1.18;
    color: #003a5d;
}

.dot-section-lead {
    max-width: 900px;
    margin: 0 auto 45px;
    text-align: center;
    font-size: 1.08rem;
    line-height: 1.75;
    color: #17313b;
}

.dot-video-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.dot-video-card {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border-radius: 18px;
    background: #ffffff;
    box-shadow: 0 12px 34px rgba(0, 45, 70, 0.12);
}

.dot-video-preview {
    width: 100%;
    height: 260px;
    display: block;
    object-fit: cover;
    background: #000000;
}

.dot-video-card__body {
    display: flex;
    flex: 1;
    flex-direction: column;
    padding: 26px;
}

.dot-video-card__body h3 {
    margin: 0 0 14px;
    font-size: 1.35rem;
    line-height: 1.28;
    color: #003a5d;
}

.dot-video-card__body p {
    margin: 0 0 22px;
    font-size: 1rem;
    line-height: 1.7;
    color: #17313b;
}

.dot-video-card__body .dot-button {
    margin-top: auto;
}


/* Themen-Sektionen
   ========================================================================== */

.dot-topic-section {
    padding: 80px 0;
    background: #ffffff;
}

.dot-topic-section--blue {
    background: #eaf6fa;
}

.dot-topic-section h2,
.dot-learning-section h2 {
    max-width: 900px;
    margin: 0 0 22px;
    font-size: clamp(1.9rem, 3vw, 2.8rem);
    line-height: 1.18;
    color: #003a5d;
}

.dot-topic-section p,
.dot-learning-section p {
    max-width: 930px;
    margin: 0 0 18px;
    font-size: 1.08rem;
    line-height: 1.75;
}


/* Lernen-Sektion
   ========================================================================== */

.dot-learning-section {
    padding: 85px 0;
    background: #003a5d;
    color: #ffffff;
}

.dot-learning-section h2,
.dot-learning-section p {
    color: #ffffff;
}


/* Buttons
   ========================================================================== */

.dot-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: fit-content;
    min-height: 46px;
    padding: 12px 24px;
    border-radius: 999px;
    background: #0077b6;
    color: #ffffff;
    font-weight: 700;
    line-height: 1.2;
    text-decoration: none;
    transition:
        background 0.2s ease,
        transform 0.2s ease,
        box-shadow 0.2s ease;
}

.dot-button:hover,
.dot-button:focus {
    background: #005f92;
    color: #ffffff;
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(0, 45, 70, 0.18);
}

.dot-button--secondary {
    margin-top: 12px;
    background: #ffffff;
    color: #003a5d;
}

.dot-button--secondary:hover,
.dot-button--secondary:focus {
    background: #eaf6fa;
    color: #003a5d;
}


/* Responsive
   ========================================================================== */

@media (max-width: 980px) {
    .dot-video-grid {
        grid-template-columns: 1fr;
    }

    .dot-video-preview {
        height: 320px;
    }
}

@media (max-width: 768px) {
    .dot-hero-video {
        height: 420px;
        min-height: 420px;
    }
}

    .dot-knowledge-intro,
    .dot-video-section,
    .dot-topic-section,
    .dot-learning-section {
        padding: 60px 0;
    }

    .dot-video-preview {
        height: 230px;
    }

    .dot-video-card__body {
        padding: 22px;
    }
}

@media (max-width: 480px) {
    .dot-container {
        width: min(100% - 32px, 1120px);
    }

    .dot-hero-video {
        min-height: 500px;
    }

    .dot-video-preview {
        height: 210px;
    }
}