/* Warmwasser-Rechner — site-specific styles */
main { max-width: 960px; }
.hero { margin-bottom: 1.5rem; }
.hero p { font-size: 1.1rem; max-width: 700px; }
.hero .price-note { font-size: 0.85rem; color: var(--color-muted); margin-top: 0.25rem; }

/* Form */
.form-card {
    background: var(--color-surface-raised);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
}
.form-group { margin-bottom: 1rem; }
.form-group:last-child { margin-bottom: 0; }
.form-group label { display: block; font-weight: 600; font-size: 0.85rem; margin-bottom: 0.375rem; }
.form-group .hint { font-size: 0.75rem; color: var(--color-muted); margin-top: 0.25rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 480px) { .form-row { grid-template-columns: 1fr; } }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1rem; }
@media (max-width: 640px) { .form-row-3 { grid-template-columns: 1fr; } }
.input-unit { position: relative; }
.input-unit input { padding-right: 3.5rem; }
.input-unit .unit { position: absolute; right: 0.75rem; top: 50%; transform: translateY(-50%); color: var(--color-muted); font-size: 0.8rem; pointer-events: none; }
.form-actions { display: flex; gap: 0.5rem; margin-top: 1rem; flex-wrap: wrap; }
.form-actions button { font-size: 0.85rem; padding: 0.625rem 1rem; }
.btn-secondary { background: var(--color-surface); color: var(--color-text); border: 1px solid var(--color-border); }
.btn-secondary:hover { background: var(--color-border); }

/* Usage type radio buttons */
.usage-type-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
    margin-bottom: 0.25rem;
}
@media (max-width: 480px) { .usage-type-grid { grid-template-columns: repeat(2, 1fr); } }
.usage-type-btn {
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    padding: 0.625rem 0.5rem;
    cursor: pointer;
    text-align: center;
    transition: border-color 0.15s;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    font-family: inherit;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text);
    box-shadow: var(--shadow-sm);
}
.usage-type-btn:hover { border-color: var(--color-primary); }
.usage-type-btn.active { border-color: var(--color-primary); background: var(--color-primary-soft); }
.usage-type-btn .type-icon { font-size: 1.25rem; line-height: 1; }

/* Advanced toggle */
.advanced-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    cursor: pointer;
    margin-top: 0.75rem;
    color: var(--color-muted);
}
.advanced-toggle input { width: auto; }
.advanced-fields { margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--color-border); }

/* Result cards */
.result-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}
.result-card {
    background: var(--color-surface); border: 1px solid var(--color-border);
    border-radius: var(--radius); padding: 1rem; text-align: center;
    box-shadow: var(--shadow-sm);
}
.result-card .value { font-size: 1.5rem; font-weight: 700; color: var(--color-primary); line-height: 1.2; }
.result-card .label { font-size: 0.7rem; color: var(--color-muted); margin-top: 0.25rem; }
.result-card.highlight { border-color: var(--color-primary); background: var(--color-primary-soft); }
@media (prefers-color-scheme: dark) { .result-card.highlight { background: var(--color-primary-soft); } }

/* Tips */
.tips-section { margin-top: 1.5rem; }
.tips-list { list-style: none; margin-top: 0.75rem; }
.tips-list li {
    padding: 0.625rem 0; border-bottom: 1px solid var(--color-border);
    font-size: 0.875rem; color: var(--color-muted); line-height: 1.5;
    position: relative; padding-left: 1.75rem;
}
.tips-list li:last-child { border-bottom: none; }
.tips-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.75rem;
    width: 18px;
    height: 18px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234338ca' stroke-width='1.75' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M9 21h6'/%3E%3Cpath d='M10 18h4'/%3E%3Cpath d='M12 3a7 7 0 0 0-7 7c0 2.8 1.5 4.5 3 6h8c1.5-1.5 3-3.2 3-6a7 7 0 0 0-7-7z'/%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
}
.tips-list .savings-badge {
    display: inline-block;
    background: #16a34a;
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.125rem 0.5rem;
    border-radius: 999px;
    margin-left: 0.5rem;
}

/* Vergleichstabelle */
.comparison-table { width: 100%; border-collapse: collapse; margin-top: 1rem; font-size: 0.875rem; }
.comparison-table th, .comparison-table td { padding: 0.75rem 0.625rem; text-align: left; border-bottom: 1px solid var(--color-border); }
.comparison-table th { font-weight: 600; font-size: 0.8rem; color: var(--color-muted); text-transform: uppercase; letter-spacing: 0.03em; }
.comparison-table td { color: var(--color-text); }
.comparison-table tbody tr:hover { background: var(--color-primary-soft); }
@media (max-width: 480px) {
    .comparison-table { font-size: 0.8rem; }
    .comparison-table th, .comparison-table td { padding: 0.5rem 0.375rem; }
}

/* Example cards */
.example-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.75rem;
    margin-top: 1rem;
}
.example-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.25rem;
    cursor: pointer;
    transition: border-color 0.15s;
}
.example-card:hover { border-color: var(--color-primary); }
.example-card h3 { font-size: 0.9375rem; margin-bottom: 0.5rem; }
.example-card .example-detail { font-size: 0.8rem; color: var(--color-muted); line-height: 1.5; margin-bottom: 0.5rem; }
.example-card .example-cost { font-size: 1.125rem; font-weight: 700; color: var(--color-primary); }

/* Content sections */
.content-section { margin-top: 2.5rem; }
.content-section h2 { margin-bottom: 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid var(--color-border); }

/* Accordion / FAQ */
.accordion details { border: 1px solid var(--color-border); border-radius: var(--radius); margin-bottom: 0.5rem; }
.accordion summary { padding: 1rem 1.25rem; font-weight: 600; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; }
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary::after { content: "\25b8"; transition: transform 0.2s; font-size: 0.875rem; color: var(--color-muted); }
.accordion details[open] summary::after { transform: rotate(90deg); }
.accordion .accordion-body { padding: 0 1.25rem 1.25rem; font-size: 0.9rem; line-height: 1.6; color: var(--color-muted); }

/* "So rechnen wir" formula display */
.formula-box {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1rem 1.25rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 1.8;
    overflow-x: auto;
    color: var(--color-text);
}
.formula-box .formula-step { margin-bottom: 0.5rem; }
.formula-box .formula-result { color: var(--color-primary); font-weight: 700; }

/* Related tools */
.related-tools { display: grid; gap: 1rem; margin-top: 1rem; }
@media (min-width: 640px) { .related-tools { grid-template-columns: 1fr 1fr 1fr; } }
.related-tool-card { display: block; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 1.25rem; text-decoration: none; transition: border-color 0.15s; }
.related-tool-card:hover { border-color: var(--color-primary); text-decoration: none; }
.related-tool-card h3 { font-size: 0.9375rem; color: var(--color-text); margin-bottom: 0.375rem; }
.related-tool-card p { font-size: 0.8rem; margin-bottom: 0; }

/* Sticky total bar (mobile) */
.sticky-bar { display: none; position: fixed; bottom: 0; left: 0; right: 0; background: var(--color-surface); border-top: 2px solid var(--color-primary); padding: 0.75rem 1rem; z-index: 100; box-shadow: 0 -4px 12px rgba(0,0,0,0.1); }
.sticky-bar.visible { display: flex; align-items: center; justify-content: space-between; gap: 0.5rem; }
.sticky-bar .sticky-values { display: flex; gap: 1rem; flex: 1; }
.sticky-bar .sticky-metric { text-align: center; }
.sticky-bar .sticky-metric .value { font-size: 1rem; font-weight: 700; color: var(--color-primary); }
.sticky-bar .sticky-metric .label { font-size: 0.6rem; color: var(--color-muted); text-transform: uppercase; }
.sticky-bar button { font-size: 0.75rem; padding: 0.5rem 0.75rem; flex-shrink: 0; }
@media (min-width: 768px) { .sticky-bar { display: none !important; } }

/* Toast */
.toast { position: fixed; bottom: 1.5rem; left: 50%; transform: translateX(-50%) translateY(120%); background: var(--color-text); color: var(--color-bg); padding: 0.75rem 1.5rem; border-radius: var(--radius); font-size: 0.875rem; font-weight: 600; opacity: 0; transition: transform 0.3s, opacity 0.3s; z-index: 200; pointer-events: none; }
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }
@media (max-width: 767px) { .toast { bottom: 5rem; } }

/* Print */
@media print { .sticky-bar, .form-actions, .toast { display: none !important; } body { background: #fff; color: #000; } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; } }