/* Mobile & App-friendly styles for Karteikarten pages */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
    overflow-x: hidden;
    scroll-behavior: smooth;
}

body {
    overflow-x: hidden;
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
}

img {
    max-width: 100%;
    height: auto;
}

nav {
    padding-top: env(safe-area-inset-top);
}

.kraut-preview summary,
details.group > summary,
.toc-category,
.back-link {
    -webkit-tap-highlight-color: rgba(156, 107, 122, 0.15);
    touch-action: manipulation;
}

.kraut-preview summary {
    position: relative;
}

.ng-fav-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    z-index: 3;
    background: rgba(255, 255, 255, 0.94);
    border: none;
    border-radius: 50%;
    width: 42px;
    height: 42px;
    min-width: 42px;
    min-height: 42px;
    font-size: 1.15rem;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
    touch-action: manipulation;
    transition: transform 0.15s ease, background 0.15s ease;
}

.ng-fav-btn:hover,
.ng-fav-btn:focus-visible {
    transform: scale(1.06);
    background: #fff;
    outline: 2px solid rgba(156, 107, 122, 0.35);
    outline-offset: 2px;
}

.kraut-preview[open] {
    grid-column: 1 / -1;
}

@media (max-width: 768px) {
    body {
        font-size: 16px;
    }

    main {
        padding: 18px 12px 48px;
    }

    nav ul {
        gap: 10px 14px;
        padding: 12px 10px;
        justify-content: center;
    }

    nav a {
        font-size: 0.88rem;
        padding: 10px 6px;
        min-height: 44px;
        display: inline-flex;
        align-items: center;
    }

    .page-header {
        margin: 12px auto 24px;
        padding: 0 8px;
    }

    .page-header h1 {
        font-size: 1.75rem;
        line-height: 1.2;
    }

    .page-header .intro {
        font-size: 0.98rem;
    }

    .back-link {
        min-height: 44px;
        display: inline-flex;
        align-items: center;
        padding: 6px 0;
    }

    .artistic-toc {
        padding: 0 8px;
        margin-bottom: 28px;
    }

    .artistic-toc h2 {
        font-size: 1.15rem;
    }

    .toc-category {
        font-size: 0.85rem;
        padding: 10px 14px;
        min-height: 44px;
    }

    details.group > summary {
        font-size: 1.08rem;
        padding: 14px 16px;
        min-height: 48px;
    }

    .group-content {
        padding: 14px 10px 20px;
    }

    .kraut-preview-grid {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    .kraut-preview-photo {
        height: 190px;
    }

    .kraut-preview-name {
        font-size: 1.12rem;
        padding: 10px 12px 2px;
    }

    .kraut-teaser {
        margin: 0 10px 10px;
        padding: 8px 14px;
        min-height: 44px;
        font-size: 0.8rem;
    }

    .kraut-preview-content {
        padding: 12px 14px 20px;
    }

    .aspect-block h4 {
        font-size: 1rem;
    }

    .aspect-block p {
        font-size: 14px;
        line-height: 1.55;
        word-wrap: break-word;
        overflow-wrap: anywhere;
    }

    .energy-highlight {
        padding: 10px 12px;
        font-size: 0.88rem;
    }

    .energie-visual .energie-section img {
        max-height: 200px;
    }
}

@media (max-width: 480px) {
    .page-header h1 {
        font-size: 1.5rem;
    }

    .toc-categories {
        gap: 8px;
    }

    .kraut-preview-photo {
        height: 170px;
    }
}

@media (display-mode: standalone) {
    body {
        padding-bottom: env(safe-area-inset-bottom);
    }

    nav {
        padding-top: max(env(safe-area-inset-top), 8px);
    }
}