:root {
    --color-bg: #fff7e8;
    --color-bg-alt: #f6ead2;
    --color-ink: #3a2415;
    --color-brand: #562600;
    --color-brand-hover: #3d1a00;
    --color-brand-mid: #937551;
    --color-accent: #cfab71;
    --color-line: rgba(86, 38, 0, 0.16);

    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Work Sans', -apple-system, BlinkMacSystemFont, sans-serif;

    --radius-sm: 4px;
    --radius-md: 10px;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    background: var(--color-bg);
}

.planer {
    max-width: 680px;
    margin: 48px auto;
    padding: 40px 28px;
    font-family: var(--font-body);
    color: var(--color-ink);
}

@media (max-width: 600px) {
    .planer {
        margin: 0 auto;
        min-height: 100vh;
        padding: 32px 20px;
    }
}

.planer-header {
    text-align: center;
    margin-bottom: 32px;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--color-line);
}

.planer-header h1 {
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--color-brand);
    font-size: 30px;
    letter-spacing: -0.01em;
    margin: 0 0 8px 0;
}

.planer-header p {
    color: var(--color-brand-mid);
    font-size: 15px;
    margin: 0;
}

.karte {
    padding-bottom: 8px;
}

.feld {
    margin-bottom: 22px;
}

.feld label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--color-brand);
}

.feld .hinweis {
    display: block;
    font-weight: 400;
    color: var(--color-brand-mid);
    font-size: 13px;
    margin-top: 6px;
}

.feld input[type="number"],
.feld select {
    width: 100%;
    padding: 11px 4px;
    border: none;
    border-bottom: 1px solid var(--color-line);
    border-radius: 0;
    font-family: var(--font-body);
    font-size: 16px;
    background: transparent;
    color: var(--color-ink);
}

.feld input[type="number"]:focus,
.feld select:focus {
    outline: none;
    border-bottom: 1px solid var(--color-brand);
}

.zeile {
    display: flex;
    gap: 24px;
}

.zeile .feld {
    flex: 1;
}

.btn {
    padding: 14px 30px;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    width: 100%;
}

.btn-berechnen {
    background: var(--color-brand);
    color: var(--color-bg);
    border: 1px solid var(--color-brand);
}

.btn-berechnen:hover {
    background: var(--color-brand-hover);
}

.btn-link {
    display: inline-block;
    background: var(--color-brand);
    color: var(--color-bg);
    text-decoration: none;
    padding: 13px 26px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 15px;
    margin-top: 8px;
    transition: background 0.2s;
}

.btn-link:hover {
    background: var(--color-brand-hover);
}

details.einstellungen {
    margin: 8px 0 28px 0;
    border-top: 1px solid var(--color-line);
    border-bottom: 1px solid var(--color-line);
}

details.einstellungen summary {
    cursor: pointer;
    font-weight: 600;
    font-size: 14px;
    color: var(--color-brand-mid);
    padding: 14px 0;
    list-style: none;
}

details.einstellungen summary::-webkit-details-marker {
    display: none;
}

details.einstellungen summary::before {
    content: '+ ';
}

details.einstellungen[open] summary::before {
    content: '– ';
}

details.einstellungen form {
    padding-bottom: 8px;
}

.ergebnis {
    display: none;
    border-top: 1px solid var(--color-line);
    padding-top: 32px;
    margin-top: 8px;
}

.ergebnis.sichtbar {
    display: block;
}

.bedarf-box {
    text-align: center;
    padding: 8px 0 32px 0;
}

.bedarf-box > div:first-child {
    font-size: 14px;
    color: var(--color-brand-mid);
    margin-bottom: 6px;
}

.bedarf-box .menge {
    font-family: var(--font-display);
    font-size: 34px;
    font-weight: 600;
    color: var(--color-brand);
}

.plan-vergleich {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    border-top: 1px solid var(--color-line);
}

@media (max-width: 560px) {
    .plan-vergleich {
        grid-template-columns: 1fr;
    }
    .plan-karte:first-child {
        border-bottom: 1px solid var(--color-line);
    }
    .plan-karte:last-child {
        border-left: none !important;
    }
}

.plan-karte {
    padding: 24px 22px;
    position: relative;
}

.plan-karte.empfohlen {
    background: var(--color-bg-alt);
}

.plan-karte:last-child {
    border-left: 1px solid var(--color-line);
}

.plan-karte .badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: transparent;
    color: var(--color-brand);
    font-size: 11px;
    font-weight: 600;
    padding: 3px 10px;
    border: 1px solid var(--color-accent);
    border-radius: 12px;
}

.plan-karte h4 {
    font-family: var(--font-display);
    font-weight: 600;
    margin: 0 0 16px 0;
    font-size: 19px;
    color: var(--color-brand);
}

.plan-karte .zeile-info {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    color: var(--color-brand-mid);
    margin-bottom: 8px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--color-line);
}

.plan-karte .zeile-info strong {
    color: var(--color-ink);
    font-weight: 600;
}

.plan-karte .gesamt {
    margin-top: 14px;
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 600;
    color: var(--color-brand);
}

.plan-karte .gesamt small {
    font-family: var(--font-body);
    font-size: 13px;
    font-weight: 400;
    color: var(--color-brand-mid);
    display: block;
    margin-top: 2px;
}

.warnung {
    border-left: 3px solid var(--color-accent);
    padding: 12px 16px;
    font-size: 14px;
    color: var(--color-ink);
    margin-top: 24px;
}

.hidden {
    display: none;
}