body {
      font-family: 'Inter', sans-serif;
      background: #f8fbfb;
      color: #1a2b2b;
      overflow-x: hidden;
    }
    html,
    body {
      width: 100%;
      max-width: 100%;
      overflow-x: hidden;
    }

    img {
      max-width: 100%;
    }

    h1, h2, h3 {
      font-family: 'Playfair Display', serif;
      letter-spacing: -0.02em;
    }

    .navbar {
      background: rgba(255,255,255,0.85);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid #e6efef;
    }

    .navbar-brand {
      font-weight: 700;
      color: #0d4a9b !important;
      white-space: normal;
      line-height: 1.2;
      max-width: 85vw;
    }

    .hero {
      padding: 40px 0 20px;
    }

    .hero h1 {
      font-size: 3.5rem;
      margin-bottom: 20px;
    }

    .hero p {
      color: #5c6f6f;
      font-size: 1.1rem;
      max-width: 520px;
    }

    .btn-premium {
      background: #0d4a9b;
      color: #fff;
      border-radius: 50px;
      padding: 12px 28px;
      border: none;
      text-decoration: none;
      display: inline-block;
    }

    .btn-premium:hover {
      background: #0b428e;
      color: #fff;
    }

    .book-box {
      background: transparent; /* odstranění bílého boxu */
      border-radius: 20px;
      padding: 0; /* odstranění vnějšího odsazení */
      box-shadow: none; /* odstranění stínu kolem */
    }

    .book-cover {
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
      padding: 0; /* odstraněné bílé odsazení */ /* prostor kolem knihy */
    }

    .section {
      padding: 80px 0;
    }

    .section-title {
      font-size: 2.5rem;
      margin-bottom: 20px;
    }

    .card-clean {
      background: white;
      border-radius: 16px;
      padding: 25px;
      border: 1px solid #eef3f3;
      height: 100%;
    }

    .cta {
      background: #4c82c8;
      color: white;
      padding: 80px 0;
      text-align: center;
    }

    footer {
      padding: 20px;
      text-align: center;
      font-size: 0.9rem;
      color: #6b7c7c;
    }

    @media (max-width: 991.98px) {
      .hero {
        padding: 90px 0 60px;
      }

      .hero h1 {
        font-size: 2.8rem;
      }

      .book-box {
        margin-top: 10px;
      }
    }

    @media (max-width: 767.98px) {
      .hero {
        padding: 48px 0 40px;
      }

      .hero h1 {
        font-size: 2.2rem;
      }

      .hero p {
        font-size: 1rem;
        max-width: 100%;
      }

      .section {
        padding: 56px 0;
      }

      .section-title {
        font-size: 2rem;
      }

      .card-clean,
      .price-box {
        padding: 22px;
      }

      .book-box {
        padding: 0;
      }

      .book-cover {
        min-height: 320px;
      }
    }

    .news-section {
      padding: 60px 0;
    }

    .news-card {
      background: #fff;
      border-radius: 12px;
      overflow: hidden;
      border: 1px solid #eef3f3;
      transition: 0.25s;
    }

    .news-card:hover {
       transform: scale(1.1); 
      box-shadow: 0 12px 30px rgba(0,0,0,0.08);
    }

    .news-card img {
      width: 100%;
      height: 160px;
      object-fit: cover;
    }

    .news-content {
      padding: 15px;
    }

    .news-content small {
      color: #7a8a8a;
      font-size: 0.8rem;
    }

    .news-content h6 {
      margin: 6px 0;
      font-weight: 600;
    }

    .news-content p {
      font-size: 0.9rem;
      color: #5c6f6f;
      margin: 0;
    }
    .sponsors-section {
      padding: 70px 0;
    }

    .sponsor-logo {
      background: #fff;
      border-radius: 12px;
      padding: 10px; /* MENŠÍ padding */
      display: flex;
      align-items: center;
      justify-content: center;
      border: 1px solid #eef3f3;
      height: 90px; /* lehce menší box */
      transition: 0.3s;
    }

    .sponsor-logo img {
      max-height: 100%;   /* využije CELÝ box */
      max-width: 100%;
      object-fit: contain;
    }

    /* hlavní sponzor */
    .sponsor-logo.main {
      height: 110px;
      max-width: 320px;
      padding: 12px;
    }

    .sponsor-logo.main img {
      max-height: 100%;
    }

    @media (max-width: 575.98px) {
      .hero h1 {
        font-size: 1.9rem;
      }

      .btn-premium {
        width: 100%;
        text-align: center;
      }
    }

    .hero-text-wrap {
      max-width: 520px;
    }

    .hero-description-box {
      position: relative;
      max-height: 128px;
      overflow: hidden;
      transition: max-height 0.45s ease;
    }

    .hero-description-box::after {
      content: "";
      position: absolute;
      left: 0;
      right: 0;
      bottom: 0;
      height: 56px;
      background: linear-gradient(to bottom, rgba(248,251,251,0), #f8fbfb 85%);
      pointer-events: none;
      transition: opacity 0.3s ease;
    }

    .hero-description-box.expanded {
      max-height: 1000px;
    }

    .hero-description-box.expanded::after {
      opacity: 0;
    }

    .hero-description {
      color: #5c6f6f;
      font-size: 1.1rem;
      line-height: 1.75;
      margin: 0;
    }

    @media (max-width: 767.98px) {
      .hero-description-box {
        max-height: 140px;
      }

      .hero-description {
        font-size: 1rem;
        line-height: 1.65;
      }
    }
    /* AUTOR SECTION - jemné doladění */

    #autor .card-clean {
      border-radius: 18px;
    }

    /* hlavní autor */
    #autor h4 {
      font-weight: 600;
      letter-spacing: -0.01em;
    }

    /* grid jmen */
    #autor .row.text-center > div {
      font-size: 0.95rem;
      padding: 6px 8px;
      color: #2d3c3c;
    }

    /* hover efekt (jemný, nepřehnaný) */
    #autor .row.text-center > div:hover {
      background: #f1f7f7;
      border-radius: 8px;
    }

    /* menší mezery na mobilu */
    @media (max-width: 575.98px) {
      #autor .row.text-center > div {
        font-size: 0.9rem;
      }
    }
    .authors-list {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
    }

    .authors-list span {
      display: inline-block;
      padding: 6px 14px;
      border-radius: 999px;
      background: #f3f3f8;
      border: 1px solid #e6efef;
      font-size: 0.9rem;
      color: #203b61;
      transition: 0.2s;
    }

    /* jemný hover */
    .authors-list span:hover {
      background: #e9f4f4;
      transform: translateY(-1px);
    }

    /* mobil */
    @media (max-width: 575.98px) {
      .authors-list span {
        font-size: 0.85rem;
        padding: 5px 12px;
      }
    }

    .book-preview-slider .preview-item {
      background: #fff;
      overflow: hidden;
    }

    .book-preview-slider .preview-item img {
      display: block;
      width: 100%;
      height: 420px;
      object-fit: contain;
      background: #ffffff;
    }

    .book-preview-slider .owl-nav {
      display: none !important;
    }


    .book-preview-slider .owl-dots {
      margin-top: 12px;
    }

    .book-preview-slider .owl-dots .owl-dot span {
      width: 10px;
      height: 10px;
      background: #cfdede;
    }

    .book-preview-slider .owl-dots .owl-dot.active span {
      background: #0d4a9b;
    }

    @media (max-width: 991.98px) {
      .book-preview-slider .preview-item img {
        height: 360px;
      }
    }

    @media (max-width: 575.98px) {
      .book-preview-slider .preview-item img {
        height: 280px;
      }
    }