/* athletik.net Design-System
   Primary: #425664 (gedämpftes Blau-Grau-Grün)
   Primary-Dark: #284356 (dunkle Variante)
   Akzent: crisp, sportlich, nicht zu neon */

:root {
    --primary: #425664;
    --primary-dark: #284356;
    --primary-darker: #1c2f3f;
    --primary-light: #5e7385;
    --primary-softer: #eaf0f3;

    --accent: #f4a261;          /* warmes Orange als Ton-Kontrast */
    --accent-hover: #e8933f;

    --bg: #ffffff;
    --bg-soft: #f7f9fa;
    --bg-card: #ffffff;
    --bg-hero: #284356;
    --bg-dark: #1c2f3f;

    --text-primary: #1c2f3f;
    --text-secondary: #4a5968;
    --text-muted: #7a8692;
    --text-on-dark: #f5f7f8;

    --border: #e2e7eb;
    --border-strong: #c6cfd5;

    --shadow-sm: 0 1px 2px rgba(28, 47, 63, 0.06);
    --shadow-md: 0 4px 14px rgba(28, 47, 63, 0.1);
    --shadow-lg: 0 12px 32px rgba(28, 47, 63, 0.14);

    --radius: 10px;
    --radius-lg: 16px;

    --success: #2f855a;
    --danger: #c53030;
    --warning: #c08a1f;
}

*, *::before, *::after { box-sizing: border-box; }

html, body {
    background: var(--bg);
    color: var(--text-primary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

h1, h2, h3, h4, h5 {
    font-family: 'Inter', system-ui, sans-serif;
    color: var(--text-primary);
    letter-spacing: -0.01em;
    font-weight: 700;
    line-height: 1.25;
    margin-top: 0;
}

.display-serif {
    font-family: 'Fraunces', 'Playfair Display', Georgia, serif;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.1;
}

a { color: var(--primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--primary-dark); }

.text-primary-brand { color: var(--primary) !important; }
.text-muted-brand { color: var(--text-muted) !important; }
.text-secondary-brand { color: var(--text-secondary) !important; }
.bg-soft { background: var(--bg-soft); }
.bg-dark-brand { background: var(--bg-dark); color: var(--text-on-dark); }
.bg-primary-brand { background: var(--primary-dark); color: var(--text-on-dark); }

/* Navbar */
.navbar-athletik {
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1030;
    backdrop-filter: blur(8px);
    background: rgba(255, 255, 255, 0.96);
}
.navbar-athletik .navbar-brand {
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--primary-dark);
    text-decoration: none;
    letter-spacing: -0.02em;
}
.navbar-athletik .navbar-brand .accent-dot { color: var(--accent); }
.navbar-athletik .nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.5rem 1rem !important;
}
.navbar-athletik .nav-link:hover,
.navbar-athletik .nav-link.active { color: var(--primary-dark); }

.lang-switcher { display: flex; align-items: center; gap: 0.3rem; font-size: 0.8rem; padding-left: 0.5rem; }
.lang-switcher .lang-link { color: var(--text-muted); text-decoration: none; padding: 0.1rem 0.25rem; font-weight: 500; }
.lang-switcher .lang-link:hover { color: var(--primary-dark); }
.lang-switcher .lang-link.active { color: var(--primary); font-weight: 600; }
.lang-switcher .lang-sep { color: var(--text-muted); opacity: 0.4; }

/* Hero */
.hero-home {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #1c2f3f 100%);
    color: var(--text-on-dark);
    padding: 5rem 0 4rem;
    position: relative;
    overflow: hidden;
}
.hero-home::before {
    content: '';
    position: absolute;
    top: -200px; right: -200px;
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(244, 162, 97, 0.12), transparent 60%);
}
.hero-home h1 { color: #fff; font-size: 3rem; }
.hero-home p { color: rgba(245, 247, 248, 0.85); font-size: 1.15rem; max-width: 640px; }

/* Cards */
.card-article, .card-exercise, .card-product {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
    height: 100%;
    display: flex;
    flex-direction: column;
}
.card-article:hover, .card-exercise:hover, .card-product:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-strong);
}
.card-article .thumb, .card-exercise .thumb, .card-product .thumb {
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, var(--primary-softer), var(--border));
    overflow: hidden;
}
.card-exercise .thumb, .card-product .thumb { aspect-ratio: 4 / 3; }
.card-article .thumb img, .card-exercise .thumb img, .card-product .thumb img {
    width: 100%; height: 100%; object-fit: cover;
}
.card-body { padding: 1rem 1.25rem 1.25rem; flex-grow: 1; display: flex; flex-direction: column; }
.card-title { font-size: 1.05rem; font-weight: 700; margin: 0.3rem 0 0.4rem; color: var(--text-primary); line-height: 1.3; }
.card-meta { color: var(--text-muted); font-size: 0.82rem; margin-top: auto; }

.badge-cluster {
    display: inline-block;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--primary);
    background: var(--primary-softer);
    padding: 0.25rem 0.55rem;
    border-radius: 4px;
    font-weight: 600;
}
.badge-difficulty {
    display: inline-block;
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-weight: 600;
    background: #fff;
    border: 1px solid var(--border-strong);
    color: var(--text-secondary);
}
.badge-difficulty.anfaenger { background: #e6f4ea; color: #1e6040; border-color: #bfe0ce; }
.badge-difficulty.fortgeschritten { background: #fdf3df; color: #805810; border-color: #f0d7a0; }
.badge-difficulty.profi { background: #fde3e3; color: #822525; border-color: #f0bdbd; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.6rem 1.4rem;
    border-radius: 999px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
}
.btn-primary {
    background: var(--primary-dark);
    color: #fff;
}
.btn-primary:hover { background: var(--primary-darker); color: #fff; transform: translateY(-1px); }
.btn-accent {
    background: var(--accent);
    color: #1c2f3f;
}
.btn-accent:hover { background: var(--accent-hover); color: #1c2f3f; }
.btn-ghost {
    background: transparent;
    border: 1px solid var(--border-strong);
    color: var(--text-primary);
}
.btn-ghost:hover { background: var(--primary-softer); color: var(--primary-dark); }

/* Section headings */
.section-title { font-size: 1.75rem; font-weight: 700; margin-bottom: 0.25rem; color: var(--text-primary); }
.section-subtitle { color: var(--text-muted); margin-bottom: 1.75rem; }

/* Filter-Bar */
.filter-bar {
    background: var(--bg-soft);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    margin-bottom: 2rem;
}

/* Forms */
.form-control, .form-select {
    background: #fff;
    border: 1px solid var(--border-strong);
    color: var(--text-primary);
    padding: 0.55rem 0.9rem;
    border-radius: var(--radius);
    width: 100%;
    font-size: 0.95rem;
}
.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    outline: 2px solid rgba(66, 86, 100, 0.2);
    outline-offset: 0;
}
.form-control::placeholder { color: var(--text-muted); }

/* Stat-Pill */
.stat-pill {
    background: var(--bg-soft);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem 1.5rem;
    text-align: center;
}
.stat-pill .value {
    font-family: 'Fraunces', Georgia, serif;
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--primary-dark);
    line-height: 1;
    display: block;
}
.stat-pill .label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-top: 0.5rem;
    display: block;
}

/* Article body (Typografie) */
.article-body {
    font-size: 1.08rem;
    line-height: 1.75;
    color: var(--text-secondary);
}
.article-body h2 { font-size: 1.6rem; margin-top: 2.5rem; margin-bottom: 0.8rem; color: var(--text-primary); }
.article-body h3 { font-size: 1.3rem; margin-top: 2rem; margin-bottom: 0.6rem; color: var(--text-primary); }
.article-body p { margin: 0 0 1.25rem; }
.article-body ul, .article-body ol { margin-bottom: 1.25rem; padding-left: 1.6rem; }
.article-body li { margin-bottom: 0.4rem; }
.article-body blockquote {
    border-left: 4px solid var(--accent);
    padding: 0.5rem 1.25rem;
    margin: 1.5rem 0;
    color: var(--text-primary);
    font-style: italic;
}
.article-body code { background: var(--primary-softer); padding: 0.1rem 0.35rem; border-radius: 4px; font-size: 0.92em; }

/* Takeaway-Box */
.takeaways-box {
    background: var(--primary-softer);
    border-left: 4px solid var(--primary);
    border-radius: 4px 10px 10px 4px;
    padding: 1.25rem 1.5rem;
    margin: 2rem 0;
}
.takeaways-box h3 { color: var(--primary-dark); font-size: 1.05rem; margin-top: 0; margin-bottom: 0.75rem; }
.takeaways-box ul { margin: 0; padding-left: 1.2rem; }
.takeaways-box li { color: var(--text-primary); margin-bottom: 0.4rem; }

/* Rating */
.rating { color: var(--accent); font-size: 0.95rem; letter-spacing: 0.05em; }
.rating .empty { color: rgba(244, 162, 97, 0.25); }

/* Footer */
.footer-athletik {
    background: var(--bg-dark);
    color: rgba(245, 247, 248, 0.85);
    padding: 3rem 0 2rem;
    margin-top: 5rem;
}
.footer-athletik h5 { color: #fff; }
.footer-athletik a { color: rgba(245, 247, 248, 0.75); }
.footer-athletik a:hover { color: var(--accent); }
.footer-athletik .small { font-size: 0.82rem; }

/* Accessibility */
.skip-link {
    position: absolute;
    width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link:focus {
    position: fixed; top: 12px; left: 12px;
    width: auto; height: auto; clip: auto; overflow: visible;
    background: var(--accent); color: #1c2f3f;
    padding: 0.7rem 1.3rem; z-index: 9999; border-radius: 8px;
    font-weight: 600; text-decoration: none;
    outline: 2px solid #fff;
}
a:focus-visible, button:focus-visible, input:focus-visible,
textarea:focus-visible, select:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: 4px;
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* Newsletter-Box */
.newsletter-box {
    background: var(--primary-dark);
    color: #fff;
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    text-align: center;
}
.newsletter-box h3 { color: #fff; margin-top: 0; }
.newsletter-box p { color: rgba(245, 247, 248, 0.8); }
.newsletter-box .form-control { background: rgba(255, 255, 255, 0.1); border-color: rgba(255, 255, 255, 0.2); color: #fff; }
.newsletter-box .form-control::placeholder { color: rgba(255, 255, 255, 0.5); }

/* Taxonomie / Facts-Box */
.facts-box {
    background: var(--bg-soft);
    border: 1px solid var(--border);
    border-left: 4px solid var(--primary);
    border-radius: var(--radius-lg);
    padding: 1.25rem 1.5rem;
    margin: 1.75rem 0;
}
.facts-title {
    font-family: 'Fraunces', serif;
    font-size: 1.15rem;
    margin: 0 0 1rem 0;
    color: var(--primary-dark);
    letter-spacing: 0.01em;
}
.facts-subtitle {
    font-family: 'Fraunces', serif;
    font-size: 0.95rem;
    margin: 1rem 0 0.5rem 0;
    color: var(--primary-dark);
    padding-top: 0.75rem;
    border-top: 1px dashed var(--border);
}
.facts-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.5rem;
    margin: 0;
}
@media (min-width: 768px) {
    .facts-grid { grid-template-columns: 1fr 1fr; gap: 0.5rem 2rem; }
}
.facts-row { display: flex; align-items: flex-start; gap: 0.75rem; margin: 0; padding: 0.25rem 0; }
.facts-row dt {
    flex: 0 0 40%;
    color: var(--text-muted);
    font-size: 0.82rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    font-weight: 500;
    margin: 0;
}
.facts-row dt i { color: var(--primary); margin-right: 0.3rem; width: 1.05em; }
.facts-row dd {
    flex: 1;
    margin: 0;
    color: var(--text-primary);
    font-size: 0.95rem;
}
.facts-chips { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.tax-chip {
    display: inline-block;
    padding: 0.15rem 0.6rem;
    border-radius: 999px;
    background: #fff;
    border: 1px solid var(--border-strong);
    font-size: 0.82rem;
    color: var(--primary-dark);
    line-height: 1.5;
}
.tax-chip-success {
    background: #e6f4ea;
    border-color: #b7dfc2;
    color: #1a5632;
    font-weight: 500;
}
.risk-low { color: #1a5632; font-weight: 500; }
.risk-medium { color: #b7791f; font-weight: 500; }
.risk-high { color: #b91c1c; font-weight: 500; }
.reco-clear { color: #1a5632; font-weight: 600; }
.reco-with_limits { color: #b7791f; font-weight: 600; }
.reco-alternatives { color: var(--primary); font-weight: 600; }
.reco-no { color: #b91c1c; font-weight: 600; }
.alternatives-box { margin-top: 1rem; padding-top: 0.75rem; border-top: 1px dashed var(--border); }
.alternatives-list { margin: 0.5rem 0 0 1.2rem; padding: 0; color: var(--text-secondary); font-size: 0.92rem; }
.alternatives-list li { margin-bottom: 0.2rem; }
.card-tax { display: flex; flex-wrap: wrap; gap: 0.3rem; }
.card-tax .tax-chip { font-size: 0.75rem; padding: 0.1rem 0.5rem; }

/* Table of Contents */
.toc-box {
    background: var(--bg-soft, #f7f5f0);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg, 12px);
    padding: 1rem 1.25rem;
    margin: 1.5rem 0;
}
.toc-box h3 { font-family: 'Fraunces', serif; color: var(--primary); }
.toc-box ol { list-style: decimal; font-size: 0.95rem; }
.toc-box a { color: var(--text-primary); text-decoration: none; border-bottom: 1px dotted transparent; transition: border-color .15s; }
.toc-box a:hover { border-bottom-color: var(--primary); color: var(--primary); }
.toc-level-3 { margin-left: 1.25rem; list-style: circle; font-size: 0.9rem; color: var(--text-secondary); }

/* Share buttons */
.share-buttons .btn-ghost {
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-secondary);
    width: 36px; height: 36px;
    display: inline-flex; align-items: center; justify-content: center;
    padding: 0;
}
.share-buttons .btn-ghost:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* Smooth scroll for TOC anchors */
html { scroll-behavior: smooth; scroll-padding-top: 80px; }

/* Hub cluster cards */
.cluster-card {
    display: flex; flex-direction: column;
    padding: 1.25rem 1rem;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg, 12px);
    text-decoration: none;
    color: var(--text-primary);
    transition: transform .15s, box-shadow .15s, border-color .15s;
    height: 100%;
    text-align: center;
    align-items: center;
    justify-content: flex-start;
}
.cluster-card:hover {
    transform: translateY(-2px);
    border-color: var(--primary);
    box-shadow: 0 6px 20px rgba(40, 67, 86, 0.08);
    color: var(--primary);
}
.cluster-card .cluster-icon {
    font-size: 1.8rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}
.cluster-card h3 { font-family: 'Fraunces', serif; margin-bottom: 0.25rem; }
.cluster-card p { margin-bottom: 0.5rem; }
.cluster-card .cluster-count {
    margin-top: auto;
    font-size: 0.8rem;
    color: var(--text-secondary);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}