:root {
    --bg-primary: #faf9f7;
    --bg-secondary: #ffffff;
    --text-primary: #1a1917;
    --text-secondary: #6b6460;
    --accent: #1e293b;
    --accent-light: #374151;
    --border: #e5e1d8;
    --hover-bg: #f4f1ec;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

main { max-width: 900px; margin: 0 auto; }

/* Hero */
.hero { padding: 6rem 2rem; text-align: center; }
.hero-content { animation: fadeIn 0.8s ease-out; }

.hero-photo {
    width: 160px;
    height: 160px;
    object-fit: contain;
    display: block;
    margin: 0 auto 1.25rem;
    border-radius: 16px;
    padding: 10px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
}

.hero-subtitle {
    color: var(--accent);
    font-size: 0.875rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 1rem;
    font-weight: 500;
}

.hero h1 {
    font-size: clamp(2.5rem, 8vw, 4rem);
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-links { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.3s ease;
    border: 1px solid var(--border);
}

.btn-primary { background-color: var(--accent); color: white; border-color: var(--accent); }
.btn-primary:hover { background-color: var(--accent-light); border-color: var(--accent-light); }
.btn-secondary { background-color: transparent; color: var(--text-primary); border-color: var(--border); }
.btn-secondary:hover { background-color: var(--hover-bg); border-color: var(--accent); }

/* Sections */
.section { padding: 4rem 2rem; border-top: 1px solid var(--border); }

.section-label {
    color: var(--accent);
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.section h2 { font-size: 2rem; font-weight: 700; margin-bottom: 2rem; letter-spacing: -0.3px; }

.section-content { color: var(--text-secondary); max-width: 700px; }
.section-content p { margin-bottom: 1rem; line-height: 1.8; }
.section-content p:last-child { margin-bottom: 0; }

/* Tier Cards */
.topics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}

.topic-item {
    padding: 1.5rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background-color: var(--bg-secondary);
    transition: all 0.3s ease;
}

.topic-item:hover { border-color: var(--accent); background-color: var(--hover-bg); }

.tier-label {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    background: var(--accent);
    color: white;
    padding: 2px 8px;
    border-radius: 4px;
    margin-bottom: 0.75rem;
}

.topic-item strong { display: block; margin-bottom: 0.25rem; color: var(--text-primary); font-size: 1.05rem; }

.tier-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 0.75rem;
    letter-spacing: -0.5px;
}

.tier-price-period {
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--text-secondary);
}

.topic-item ul {
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding-left: 1.1rem;
}

.topic-item ul li { margin-bottom: 0.3rem; }

/* Endpoint Links */
.links-container { display: flex; flex-direction: column; gap: 1rem; max-width: 700px; }

.link-item {
    display: flex;
    gap: 1.5rem;
    padding: 1.25rem 1.5rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background-color: var(--bg-secondary);
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s ease;
    align-items: center;
}

.link-item:hover {
    border-color: var(--accent);
    background-color: var(--hover-bg);
    transform: translateX(6px);
}

.link-icon { font-size: 1.25rem; flex-shrink: 0; }
.link-item strong { display: block; color: var(--text-primary); margin-bottom: 0.25rem; }
.link-item p { color: var(--text-secondary); font-size: 0.9rem; margin: 0; }

.method {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 2px 6px;
    border-radius: 4px;
    margin-right: 0.3rem;
    vertical-align: middle;
}

.method-get     { background: #dcfce7; color: #166534; }
.method-post    { background: #dbeafe; color: #1e40af; }
.method-premium { background: #fef9c3; color: #713f12; }

/* Inline code */
code {
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    font-size: 0.875em;
    background: var(--hover-bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.1em 0.4em;
    color: var(--text-primary);
}

/* Animation */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* Responsive */
@media (max-width: 768px) {
    .hero { padding: 4rem 1.5rem; }
    .hero h1 { font-size: 2rem; }
    .hero-photo { width: 110px; height: 110px; }
    .section { padding: 3rem 1.5rem; }
    .section h2 { font-size: 1.5rem; }
    .topics-grid { grid-template-columns: 1fr; }
    .hero-links { gap: 0.75rem; }
    .btn { padding: 0.6rem 1.2rem; font-size: 0.95rem; }
}

/* Plan picker (Zugang section) */
.plan-picker {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-top: 1.75rem;
}

.plan-option { cursor: pointer; }

.plan-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.plan-option-label {
    display: inline-block;
    padding: 0.5rem 1.1rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-secondary);
    font-size: 0.9rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    user-select: none;
}

.plan-option input[type="radio"]:checked + .plan-option-label {
    border-color: var(--accent);
    background: var(--accent);
    color: white;
    font-weight: 500;
}

.plan-option-label:hover {
    border-color: var(--accent);
    color: var(--text-primary);
}

/* Stats / Trend-Analyse */
.stats-kpi-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 1.75rem;
}

.stats-kpi {
    padding: 1.25rem 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background-color: var(--bg-secondary);
    text-align: center;
}

.stats-kpi-value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: -0.5px;
    margin-bottom: 0.25rem;
}

.stats-kpi-critical { color: #dc2626; }

.stats-kpi-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 500;
}

.stats-chart-wrapper {
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-secondary);
    padding: 1rem 1rem 0.5rem;
    margin-bottom: 0.75rem;
    overflow: hidden;
}

.stats-note {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Footer */
.footer {
    border-top: 1px solid var(--border);
    padding: 3rem 2rem;
    margin-top: 4rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.footer-legal { display: flex; gap: 2rem; }

.footer-legal a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-legal a:hover { color: var(--accent); }

@media (max-width: 768px) {
    .footer { flex-direction: column; text-align: center; padding: 2rem 1.5rem; gap: 1rem; }
    .footer-legal { gap: 1rem; }
}