/* Extracted from bestandteile.html */
/* === BESTANDTEILE PAGE SPECIFIC STYLES === */
      /* Hero uses lt-hero classes from leistungen-template.css */

      /* === CATEGORY NAVIGATION === */
      .bt-nav {
        background: #f8fafb;
        border-bottom: 1px solid #e5e7eb;
        padding: 0.75rem 0 0.5rem;
        position: sticky;
        top: 0;
        z-index: 90;
        box-shadow: 0 2px 8px rgba(0,0,0,0.04);
      }
      .bt-nav__container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 2rem;
      }
      .bt-nav__scroll-wrapper {
        position: relative;
        display: flex;
        align-items: center;
        gap: 0;
      }
      .bt-nav__arrow {
        position: absolute;
        top: 50%;
        transform: translateY(-50%);
        width: 32px;
        height: 32px;
        border-radius: 50%;
        background: #111827;
        color: #fff;
        border: none;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        z-index: 5;
        opacity: 0;
        transition: opacity 0.3s;
        box-shadow: 0 2px 8px rgba(0,0,0,0.15);
      }
      .bt-nav__arrow--left {
        left: 0;
      }
      .bt-nav__arrow--right {
        right: 0;
      }
      .bt-nav__arrow--visible {
        opacity: 1;
      }
      .bt-nav__arrow:hover {
        background: #66ff7e;
        color: #111827;
      }
      .bt-nav__inner {
        display: flex;
        gap: 0.5rem;
        overflow-x: auto;
        scrollbar-width: none;
        -ms-overflow-style: none;
        padding: 4px 36px;
        scroll-behavior: smooth;
      }
      .bt-nav__inner::-webkit-scrollbar { display: none; }
      .bt-nav__btn {
        white-space: nowrap;
        padding: 8px 16px;
        border-radius: 8px;
        border: 1px solid #e5e7eb;
        background: #fff;
        font-size: 0.82rem;
        font-weight: 500;
        color: #374151;
        cursor: pointer;
        transition: all 0.2s;
        flex-shrink: 0;
      }
      .bt-nav__btn:hover,
      .bt-nav__btn--active {
        background: #111827;
        color: #fff;
        border-color: #111827;
      }
      /* Search & Filter Bar */
      .bt-nav__tools {
        display: flex;
        align-items: center;
        gap: 0.75rem;
        margin-top: 0.6rem;
        flex-wrap: wrap;
      }
      .bt-nav__search {
        position: relative;
        flex: 1;
        min-width: 200px;
        max-width: 360px;
      }
      .bt-nav__search-icon {
        position: absolute;
        left: 12px;
        top: 50%;
        transform: translateY(-50%);
        width: 16px;
        height: 16px;
        color: #9ca3af;
        pointer-events: none;
      }
      .bt-nav__search-input {
        width: 100%;
        padding: 8px 12px 8px 36px;
        border: 1px solid #e5e7eb;
        border-radius: 8px;
        font-size: 0.82rem;
        background: #fff;
        color: #374151;
        outline: none;
        transition: border-color 0.2s, box-shadow 0.2s;
      }
      .bt-nav__search-input:focus {
        border-color: #66ff7e;
        box-shadow: 0 0 0 3px rgba(102,255,126,0.1);
      }
      .bt-nav__search-input::placeholder {
        color: #9ca3af;
      }
      .bt-nav__filter {
        display: flex;
        gap: 0.4rem;
        align-items: center;
      }
      .bt-nav__filter-btn {
        padding: 6px 12px;
        border-radius: 6px;
        border: 1px solid #e5e7eb;
        background: #fff;
        font-size: 0.75rem;
        font-weight: 500;
        color: #6b7280;
        cursor: pointer;
        transition: all 0.2s;
      }
      .bt-nav__filter-btn:hover,
      .bt-nav__filter-btn--active {
        background: #111827;
        color: #fff;
        border-color: #111827;
      }
      .bt-nav__result-count {
        font-size: 0.75rem;
        color: #9ca3af;
        margin-left: auto;
      }

      /* === MODULE SECTIONS === */
      .bt-section {
        padding: 5rem 0;
        border-bottom: 1px solid #e5e7eb;
      }
      .bt-section:nth-child(odd) {
        background: linear-gradient(135deg, #f0f7ff 0%, #e8f4fd 50%, #f5faff 100%);
      }
      .bt-section:nth-child(even) {
        background: #ffffff;
        background-image: linear-gradient(rgba(0,0,0,0.025) 1px, transparent 1px), linear-gradient(90deg, rgba(0,0,0,0.025) 1px, transparent 1px);
        background-size: 24px 24px;
      }
      .bt-section__inner {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 2rem;
      }
      .bt-section__header {
        margin-bottom: 3rem;
        display: flex;
        flex-wrap: wrap;
        align-items: flex-start;
        position: relative;
      }

      .bt-section__icon {
        width: 144px;
        height: 144px;
        position: absolute;
        right: 0;
        top: 0;
        opacity: 0.85;
      }
      .bt-section__title {
        font-family: 'Bricolage Grotesque', sans-serif;
        font-size: clamp(1.6rem, 3vw, 2.2rem);
        font-weight: 700;
        color: #111827;
        margin-bottom: 0.75rem;
        width: calc(100% - 160px);
      }
      .bt-section__desc {
        font-size: 1rem;
        color: #6b7280;
        max-width: 700px;
        width: calc(100% - 160px);
        line-height: 1.6;
      }

      /* === FEATURE GRID === */
      .bt-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
        gap: 1.5rem;
      }
      .bt-card {
        background: #fff;
        border: 1px solid #e5e7eb;
        border-radius: 12px;
        padding: 1.5rem;
        transition: all 0.25s ease;
      }
      .bt-card:hover {
        border-color: #66ff7e;
        box-shadow: 0 4px 20px rgba(102,255,126,0.08);
        transform: translateY(-2px);
      }
      .bt-card__icon {
        width: 56px;
        height: 56px;
        background: rgba(200, 245, 210, 0.5);
        border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
        display: flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 1rem;
        position: relative;
      }
      .bt-card:nth-child(2n) .bt-card__icon {
        border-radius: 70% 30% 30% 70% / 70% 70% 30% 30%;
      }
      .bt-card:nth-child(3n) .bt-card__icon {
        border-radius: 50% 70% 40% 60% / 60% 40% 70% 50%;
      }
      .bt-card:nth-child(4n) .bt-card__icon {
        border-radius: 40% 60% 70% 30% / 50% 70% 30% 60%;
      }
      .bt-card__icon svg {
        width: 24px;
        height: 24px;
        stroke: #66ff7e;
        stroke-width: 1.5;
      }
      .bt-card__title {
        font-family: 'Bricolage Grotesque', sans-serif;
        font-size: 1rem;
        font-weight: 600;
        color: #111827;
        margin-bottom: 0.5rem;
      }
      .bt-card__text {
        font-size: 0.88rem;
        color: #6b7280;
        line-height: 1.55;
      }
      .bt-card__tag {
        display: inline-block;
        font-size: 0.7rem;
        font-weight: 600;
        color: #059669;
        background: #ecfdf5;
        padding: 2px 8px;
        border-radius: 4px;
        margin-top: 0.75rem;
        text-transform: uppercase;
        letter-spacing: 0.3px;
      }
      .bt-card__tag--upcoming {
        color: #d97706;
        background: #fffbeb;
      }

      /* === FILTER SIDE-PANEL (Mobile/Tablet) === */
      .bt-filter-toggle {
        display: none;
        align-items: center;
        gap: 0.5rem;
        padding: 7px 14px;
        border-radius: 8px;
        border: 1px solid #e5e7eb;
        background: #fff;
        font-size: 0.82rem;
        font-weight: 600;
        color: #374151;
        cursor: pointer;
        transition: all 0.2s;
        flex-shrink: 0;
      }
      .bt-filter-toggle svg {
        width: 16px;
        height: 16px;
        stroke: currentColor;
      }
      .bt-filter-toggle:hover {
        background: #111827;
        color: #fff;
        border-color: #111827;
      }
      .bt-filter-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0,0,0,0.4);
        z-index: 9998;
        opacity: 0;
        transition: opacity 0.3s ease;
      }
      .bt-filter-overlay.active {
        display: block;
        opacity: 1;
      }
      .bt-filter-panel {
        position: fixed;
        top: 0;
        right: -320px;
        width: 300px;
        max-width: 85vw;
        height: 100%;
        background: #fff;
        z-index: 9999;
        box-shadow: -4px 0 20px rgba(0,0,0,0.1);
        transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        display: flex;
        flex-direction: column;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
      }
      .bt-filter-panel.open {
        right: 0;
      }
      .bt-filter-panel__header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 1.25rem 1.5rem;
        border-bottom: 1px solid #e5e7eb;
        flex-shrink: 0;
      }
      .bt-filter-panel__title {
        font-family: 'Bricolage Grotesque', sans-serif;
        font-size: 1.1rem;
        font-weight: 700;
        color: #111;
      }
      .bt-filter-panel__close {
        width: 36px;
        height: 36px;
        border-radius: 50%;
        border: 1px solid #e5e7eb;
        background: transparent;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        transition: all 0.2s;
      }
      .bt-filter-panel__close:hover {
        background: #f3f4f6;
      }
      .bt-filter-panel__close svg {
        width: 18px;
        height: 18px;
        stroke: #374151;
      }
      .bt-filter-panel__body {
        padding: 1.5rem;
        flex: 1;
        display: flex;
        flex-direction: column;
        gap: 1.5rem;
      }
      .bt-filter-panel__section-title {
        font-size: 0.75rem;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.05em;
        color: #9ca3af;
        margin-bottom: 0.75rem;
      }
      .bt-filter-panel__buttons {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
      }
      .bt-filter-panel__btn {
        padding: 10px 14px;
        border-radius: 8px;
        border: 1px solid #e5e7eb;
        background: #fff;
        font-size: 0.88rem;
        font-weight: 500;
        color: #374151;
        cursor: pointer;
        transition: all 0.2s;
        text-align: left;
      }
      .bt-filter-panel__btn:hover {
        background: #f3f4f6;
        border-color: #d1d5db;
      }
      .bt-filter-panel__btn--active {
        background: #111827;
        color: #fff;
        border-color: #111827;
      }
      .bt-filter-panel__btn--active:hover {
        background: #1f2937;
      }
      .bt-filter-panel__search {
        position: relative;
      }
      .bt-filter-panel__search-icon {
        position: absolute;
        left: 12px;
        top: 50%;
        transform: translateY(-50%);
        width: 16px;
        height: 16px;
        color: #9ca3af;
        pointer-events: none;
      }
      .bt-filter-panel__search-input {
        width: 100%;
        padding: 10px 12px 10px 38px;
        border: 1px solid #e5e7eb;
        border-radius: 8px;
        font-size: 0.88rem;
        background: #fff;
        color: #374151;
        outline: none;
        transition: border-color 0.2s, box-shadow 0.2s;
      }
      .bt-filter-panel__search-input:focus {
        border-color: #66ff7e;
        box-shadow: 0 0 0 3px rgba(102,255,126,0.1);
      }
      .bt-filter-panel__result {
        font-size: 0.82rem;
        color: #9ca3af;
        padding-top: 0.5rem;
        border-top: 1px solid #f3f4f6;
      }

      @media (max-width: 1024px) {
        .bt-filter-toggle {
          display: flex;
        }
        .bt-nav__tools {
          display: none;
        }
      }

      /* === RESPONSIVE === */
      @media (max-width: 768px) {
        .bt-hero { padding: 120px 0 60px; }
        .bt-hero__stats { gap: 1.5rem; flex-wrap: wrap; }
        .bt-grid { grid-template-columns: 1fr; }
        .bt-nav { top: 60px; }
      }