/* CS Bereken Tarief */
.cstw {
    --cstw-accent: #f97316;
    --cstw-text: #1e293b;
    --cstw-border: #e2e8f0;
    --cstw-muted: #64748b;
    width: 100%;
    color: var(--cstw-text);
    scroll-margin-top: 140px; /* ruimte voor sticky menu bij stap-scroll */
}

/* Progress */
.cstw-progress {
    height: 6px;
    background: var(--cstw-border);
    border-radius: 999px;
    overflow: hidden;
    margin-bottom: 28px;
}
.cstw-progress-bar {
    height: 100%;
    background: var(--cstw-accent);
    border-radius: 999px;
    transition: width .35s ease;
}

/* Panels */
.cstw-panel { display: none; }
.cstw-panel.is-active { display: block; animation: cstw-fade .3s ease; }
@keyframes cstw-fade {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: none; }
}

.cstw-step-count {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--cstw-accent);
    margin-bottom: 8px;
}
.cstw-question-title {
    margin: 0 0 12px;
    font-size: 24px;
    line-height: 1.3;
}
.cstw-intro-text {
    color: var(--cstw-muted);
    margin: 0 0 24px;
}

/* Opties */
.cstw-option { display: block; margin-bottom: 12px; cursor: pointer; }
.cstw-option input { position: absolute; opacity: 0; pointer-events: none; }
.cstw-option-box {
    display: block;
    border: 2px solid var(--cstw-border);
    border-radius: 12px;
    padding: 16px 18px;
    transition: border-color .2s, background .2s, box-shadow .2s;
}
.cstw-option:hover .cstw-option-box { border-color: var(--cstw-accent); }
.cstw-option input:checked + .cstw-option-box {
    border-color: var(--cstw-accent);
    background: color-mix(in srgb, var(--cstw-accent) 8%, transparent);
    box-shadow: 0 0 0 1px var(--cstw-accent);
}
.cstw-option input:focus-visible + .cstw-option-box {
    outline: 2px solid var(--cstw-accent);
    outline-offset: 2px;
}
.cstw-option-label { display: block; font-weight: 600; }
.cstw-option-desc {
    display: block;
    font-size: 14px;
    color: var(--cstw-muted);
    margin-top: 4px;
}

/* Inputs */
.cstw-input {
    display: block;
    width: 100%;
    box-sizing: border-box;
    border: 2px solid var(--cstw-border);
    border-radius: 12px;
    padding: 14px 16px;
    font-size: 16px;
    margin-bottom: 14px;
    color: inherit;
    background: transparent;
    transition: border-color .2s;
}
.cstw-input:focus {
    outline: none;
    border-color: var(--cstw-accent);
}
.cstw-hp {
    position: absolute !important;
    left: -9999px !important;
    height: 1px; width: 1px;
    overflow: hidden;
}

/* Validatie */
.cstw-validation {
    color: #b91c1c;
    font-size: 14px;
    margin: 6px 0 0;
}

/* Knoppen */
.cstw-nav {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    margin-top: 24px;
}
.cstw-btn {
    font-size: 16px;
    font-weight: 600;
    border-radius: 999px;
    padding: 12px 28px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: filter .2s, background .2s, color .2s;
}
.cstw-btn-primary {
    background: var(--cstw-accent);
    color: #fff;
}
.cstw-btn-primary:hover { filter: brightness(.92); }
.cstw-btn-primary:disabled { opacity: .6; cursor: wait; }
.cstw-btn-ghost {
    background: transparent;
    color: var(--cstw-muted);
    border-color: var(--cstw-border);
}
.cstw-btn-ghost:hover { color: var(--cstw-text); border-color: var(--cstw-muted); }
.cstw-btn.is-loading::after { content: "…"; }

/* Resultaat */
.cstw-result { text-align: center; padding: 24px 0; }
.cstw-result.is-active { display: flex; flex-direction: column; justify-content: center; align-items: center; min-height: 320px; }
.cstw-success-icon {
    width: 64px; height: 64px;
    line-height: 64px;
    margin: 0 auto 16px;
    border-radius: 50%;
    background: color-mix(in srgb, var(--cstw-accent) 15%, transparent);
    color: var(--cstw-accent);
    font-size: 32px;
    font-weight: 700;
}
.cstw-success p { font-size: 18px; }
.cstw-error { color: #b91c1c; font-weight: 600; }

/* Mobiel */
@media (max-width: 600px) {
    /* Zelfredzaam op mobiel: eigen zijmarge + thema-bestendige titelgrootte */
    .cstw { padding-left: 20px; padding-right: 20px; }
    .cstw, .cstw * { box-sizing: border-box; }
    .cstw .cstw-question-title,
    h3.cstw-question-title { font-size: 20px !important; line-height: 1.35 !important; }
    .cstw-nav { flex-direction: column-reverse; }
    .cstw-btn { width: 100%; }
}