/* ============================================
   BEDARFSRECHNER (Kalkulator)
   ============================================ */
.calculator {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-elevated);
    padding: 40px;
    max-width: 680px;
    margin: 0 auto;
}
.calc-progress-track {
    height: 6px;
    background: var(--color-sand);
    border-radius: 99px;
    margin-bottom: 8px;
    overflow: hidden;
}
.calc-progress-bar {
    height: 100%;
    background: var(--color-terracotta);
    width: 12.5%;
    transition: width 0.3s ease;
}
.calc-step-label {
    font-size: 0.8rem;
    color: var(--color-gray-mid);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 2rem;
    display: block;
}
.calc-step { display: none; }
.calc-step:first-child { display: block; }
.calc-step h3 { margin-bottom: 0.4em; }
.calc-step-sub { color: var(--color-gray-mid); margin-bottom: 1.8em; }

.calc-service-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}
.calc-service-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-white);
    text-align: left;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-petrol);
    transition: border-color 0.15s ease, background 0.15s ease;
}
.calc-service-option:hover { border-color: var(--color-terracotta); }
.calc-service-option.selected { border-color: var(--color-terracotta); background: var(--color-sand-light); }
.calc-service-option svg { width: 22px; height: 22px; color: var(--color-terracotta); flex-shrink: 0; }

.calc-field { margin-bottom: 20px; }
.calc-field label {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-petrol);
    margin-bottom: 6px;
}
.calc-field input,
.calc-field textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1rem;
    background: var(--color-sand-light);
}
.calc-field input:focus,
.calc-field textarea:focus {
    outline: none;
    border-color: var(--color-terracotta);
    background: var(--color-white);
}
.calc-field-hint { font-size: 0.82rem; color: var(--color-gray-mid); margin-top: 4px; }

.calc-nav { display: flex; justify-content: space-between; margin-top: 1.5em; gap: 12px; }
.calc-nav .btn { flex: 1; justify-content: center; }

.calc-success { display: none; text-align: center; padding: 1rem 0; }
.calc-success svg { width: 64px; height: 64px; color: var(--color-success); margin: 0 auto 1.2em; }

.calc-result-message {
    display: none;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    margin-top: 1em;
}
.calc-result-message.error { background: #FBE9E7; color: #A8503A; display: block; }
.calc-result-message.success { background: #E8F2EC; color: #2E5E42; display: block; }

@media (max-width: 600px) {
    .calculator { padding: 24px; }
    .calc-service-options { grid-template-columns: 1fr; }
}