/* ── Kostenrechner Frontend – vollständig auf .kr-app gescoped ──────────── */
/* Kein einziger Selektor wirkt außerhalb von .kr-app                        */

@keyframes kr-fade {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes kr-pop {
    from { transform: scale(0); }
    to   { transform: scale(1); }
}
@keyframes kr-pulse-border {
    0%,100% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--kr-fin-border,#f59e0b) 40%, transparent); }
    50%      { box-shadow: 0 0 0 5px color-mix(in srgb, var(--kr-fin-border,#f59e0b) 0%, transparent); }
}

/* ── Root scope + CSS vars ──────────────────────────────────────────────── */
.kr-app {
    /* design tokens */
    --kr-font:                 inherit;
    --kr-primary:              #2563eb;
    --kr-progress:             #2563eb;
    --kr-app-bg:               transparent;
    --kr-btn-next-bg:          #2563eb;
    --kr-btn-next-text:        #ffffff;
    --kr-btn-prev-bg:          #f1f5f9;
    --kr-btn-prev-text:        #1e293b;
    --kr-tile-bg:              #ffffff;
    --kr-tile-border:          #e2e8f0;
    --kr-tile-text:            #1e293b;
    --kr-tile-desc:            #475569;
    --kr-tile-price:           #2563eb;
    --kr-tile-active-bg:       #dbeafe;
    --kr-tile-active-border:   #2563eb;
    --kr-tile-active-text:     #1e293b;
    --kr-tile-active-check:    #2563eb;
    --kr-summary-bg:           #f8fafc;
    --kr-summary-border:       #e2e8f0;
    --kr-summary-title-text:   #1e293b;
    --kr-summary-label-text:   #475569;
    --kr-summary-price-text:   #1e293b;
    --kr-summary-total-text:   #2563eb;
    --kr-summary-monthly-text: #475569;
    --kr-summary-vat-text:     #94a3b8;
    --kr-summary-empty-text:   #94a3b8;
    --kr-fin-bg:               #fffbeb;
    --kr-fin-border:           #f59e0b;
    --kr-fin-text:             #92400e;
    --kr-fin-badge-bg:         #f59e0b;
    --kr-fin-badge-text:       #fff;
    --kr-fin-tier-active-bg:   #d97706;
    --kr-fin-tier-active-text: #ffffff;
    --kr-fin-tier-icon-color:  #ffffff;

    /* layout reset – scoped, does NOT affect elements outside .kr-app */
    font-family: var(--kr-font);
    width: 100%;
    background: var(--kr-app-bg);
    box-sizing: border-box;
    line-height: 1.5;
}

/* box-sizing only for children of .kr-app – does NOT touch the rest of the page */
.kr-app *,
.kr-app *::before,
.kr-app *::after {
    box-sizing: border-box;
}

/* ── Header ─────────────────────────────────────────────────────────────── */
.kr-app .kr-header { text-align: center; margin-bottom: 36px; }
.kr-app .kr-title  { font-size: 2rem; font-weight: 800; margin: 0 0 8px; letter-spacing: -.02em; }
.kr-app .kr-subtitle { color: #475569; margin: 0 0 24px; font-size: 1.05rem; }

.kr-app .kr-progress-bar {
    background: #e2e8f0;
    border-radius: 99px;
    height: 14px;
    overflow: hidden;
    max-width: 520px;
    margin: 0 auto 8px;
    box-shadow: inset 0 2px 4px rgba(0,0,0,.06);
}
.kr-app .kr-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--kr-progress) 0%, color-mix(in srgb, var(--kr-progress) 70%, #fff) 100%);
    border-radius: 99px;
    transition: width .5s cubic-bezier(.4,0,.2,1);
    width: 0%;
    box-shadow: 0 2px 8px color-mix(in srgb, var(--kr-progress) 40%, transparent);
}
.kr-app .kr-step-info { color: #94a3b8; font-size: .85rem; margin-top: 4px; }

/* ── Body layout ─────────────────────────────────────────────────────────── */
.kr-app .kr-body {
    display: flex;
    gap: 28px;
    align-items: flex-start;
    width: 100%;
}
.kr-app .kr-steps-container { flex: 1; min-width: 0; }
.kr-app .kr-contact-pane    { flex: 1; min-width: 0; }

/* ── Step ────────────────────────────────────────────────────────────────── */
.kr-app .kr-step { display: none; animation: kr-fade .3s ease; }
.kr-app .kr-step.active { display: block; }

.kr-app .kr-step-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin: 0 0 20px;
    padding-bottom: 14px;
    border-bottom: 2px solid #e2e8f0;
    letter-spacing: -.01em;
}

/* ── Option cards – max 3 per row, equal width ───────────────────────────── */
.kr-app .kr-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 28px;
}

.kr-app .kr-option {
    border: 2px solid var(--kr-tile-border);
    border-radius: 16px;
    padding: 24px 20px 22px;
    cursor: pointer;
    transition: border-color .2s, background .2s, box-shadow .2s, transform .15s;
    background: var(--kr-tile-bg);
    position: relative;
    user-select: none;
    overflow: visible;
}
.kr-app .kr-option:hover {
    border-color: var(--kr-tile-active-border);
    background: var(--kr-tile-active-bg);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,.08);
}
.kr-app .kr-option:hover .kr-option-label { color: var(--kr-tile-active-text); }
.kr-app .kr-option:hover .kr-option-desc  { color: var(--kr-tile-active-text); opacity: .75; }
.kr-app .kr-option:hover .kr-option-price { color: var(--kr-tile-active-text); }

.kr-app .kr-option.selected {
    border-color: var(--kr-tile-active-border);
    background: var(--kr-tile-active-bg);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px color-mix(in srgb, var(--kr-tile-active-border) 28%, transparent);
}

/* Oversized badge checkmark – half outside top-right corner */
.kr-app .kr-option.selected::after {
    content: "✓";
    position: absolute;
    top: -14px;
    right: -14px;
    background: var(--kr-tile-active-check);
    color: #fff;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    font-size: 1rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 36px;
    text-align: center;
    box-shadow: 0 3px 10px color-mix(in srgb, var(--kr-tile-active-check) 50%, transparent);
    border: 3px solid var(--kr-tile-bg);
    animation: kr-pop .2s cubic-bezier(.34,1.56,.64,1);
}

.kr-app .kr-option-label {
    font-weight: 700;
    font-size: 1rem;
    margin: 0 0 6px;
    color: var(--kr-tile-text);
    transition: color .2s;
    padding-right: 12px;
}
.kr-app .kr-option-desc {
    font-size: .82rem;
    color: var(--kr-tile-desc);
    margin: 0 0 14px;
    line-height: 1.5;
    transition: color .2s;
}
.kr-app .kr-option-price {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--kr-tile-price);
    transition: color .2s;
    letter-spacing: -.01em;
}
.kr-app .kr-option.selected .kr-option-label { color: var(--kr-tile-active-text); }
.kr-app .kr-option.selected .kr-option-desc  { color: var(--kr-tile-active-text); opacity: .75; }
.kr-app .kr-option.selected .kr-option-price { color: var(--kr-tile-active-text); }
.kr-app .kr-option-price.kr-free { color: #16a34a; }
.kr-app .kr-option:hover .kr-option-price.kr-free,
.kr-app .kr-option.selected .kr-option-price.kr-free { color: var(--kr-tile-active-text); }

/* ── Navigation ──────────────────────────────────────────────────────────── */
.kr-app .kr-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 4px;
    gap: 12px;
    padding-top: 20px;
    border-top: 1px solid #e2e8f0;
}
.kr-app .kr-btn {
    padding: 14px 36px;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    border: none;
    transition: filter .2s, transform .15s, box-shadow .2s;
    letter-spacing: .01em;
    display: inline-block;
    text-decoration: none;
}
.kr-app .kr-btn:hover { filter: brightness(.92); transform: translateY(-2px); box-shadow: 0 4px 14px rgba(0,0,0,.12); }
.kr-app .kr-btn-next  { background: var(--kr-btn-next-bg); color: var(--kr-btn-next-text); }
.kr-app .kr-btn-prev  { background: var(--kr-btn-prev-bg); color: var(--kr-btn-prev-text); border: 1px solid #e2e8f0; }

/* ── Sidebar Summary ─────────────────────────────────────────────────────── */
.kr-app .kr-sidebar { width: 280px; flex-shrink: 0; }
.kr-app .kr-summary-box {
    background: var(--kr-summary-bg);
    border: 1px solid var(--kr-summary-border);
    border-radius: 12px;
    padding: 22px 18px;
    position: sticky;
    top: 20px;
}
.kr-app .kr-summary-heading { margin: 0 0 16px; font-size: 1rem; font-weight: 700; color: var(--kr-summary-title-text); }

.kr-app #kr-summary-list {
    list-style: none;
    margin: 0 0 16px;
    padding: 0;
    min-height: 40px;
}
.kr-app #kr-summary-list li {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 6px 0;
    border-bottom: 1px solid var(--kr-summary-border);
    font-size: .85rem;
    gap: 8px;
    margin: 0;
    background: none;
}
.kr-app #kr-summary-list li:last-child { border-bottom: none; }
.kr-app .kr-summary-empty { color: var(--kr-summary-empty-text); font-style: italic; justify-content: center !important; }
.kr-app .kr-sum-label { color: var(--kr-summary-label-text); }
.kr-app .kr-sum-price { font-weight: 600; white-space: nowrap; color: var(--kr-summary-price-text); }

.kr-app .kr-total-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0 4px;
    border-top: 2px solid var(--kr-summary-border);
    font-size: 1rem;
}
.kr-app .kr-sum-row-label { color: var(--kr-summary-label-text); }
.kr-app .kr-total-row strong { font-size: 1.2rem; color: var(--kr-summary-total-text); }
.kr-app .kr-monthly-row { border-top: none; padding-top: 4px; }
.kr-app .kr-monthly-row strong { font-size: 1rem; color: var(--kr-summary-monthly-text); }
.kr-app .kr-vat-hint { font-size: .75rem; color: var(--kr-summary-vat-text); margin: 8px 0 0; text-align: right; }

/* ── Financing box ───────────────────────────────────────────────────────── */
.kr-app .kr-financing-box {
    margin-top: 14px;
    border-radius: 12px;
    padding: 18px;
    border: 2px solid var(--kr-fin-border);
    background: var(--kr-fin-bg);
    position: relative;
    overflow: hidden;
    animation: kr-pulse-border 2.5s ease-in-out infinite;
}
.kr-app .kr-fin-badge {
    display: inline-block;
    background: var(--kr-fin-badge-bg);
    color: var(--kr-fin-badge-text);
    font-size: .7rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 99px;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: .05em;
}
.kr-app .kr-fin-headline {
    font-size: .9rem;
    color: var(--kr-fin-text);
    margin: 0 0 10px;
    line-height: 1.4;
    font-weight: 500;
}
.kr-app .kr-fin-tiers { display: flex; flex-direction: column; gap: 6px; }
.kr-app .kr-fin-tier {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 7px 10px;
    border-radius: 8px;
    background: color-mix(in srgb, var(--kr-fin-bg) 50%, white);
    border: 1px solid color-mix(in srgb, var(--kr-fin-border) 30%, transparent);
    font-size: .82rem;
}
.kr-app .kr-fin-tier-label { color: var(--kr-fin-text); }
.kr-app .kr-fin-tier-price { font-weight: 700; color: var(--kr-fin-border); font-size: .95rem; }
.kr-app .kr-fin-tier.active-tier {
    background: var(--kr-fin-tier-active-bg);
    border-color: var(--kr-fin-tier-active-bg);
    box-shadow: 0 3px 12px color-mix(in srgb, var(--kr-fin-tier-active-bg) 45%, transparent);
    transform: scale(1.02);
    transition: transform .2s, box-shadow .2s;
}
.kr-app .kr-fin-tier.active-tier .kr-fin-tier-label,
.kr-app .kr-fin-tier.active-tier .kr-fin-tier-price { color: var(--kr-fin-tier-active-text); }
.kr-app .kr-fin-tier-icon { font-size: 1.1rem; margin-right: 6px; color: var(--kr-fin-tier-icon-color); flex-shrink: 0; }
.kr-app .kr-fin-note { font-size: .72rem; color: var(--kr-fin-text); opacity: .7; margin: 8px 0 0; text-align: center; }

/* ── Contact form ────────────────────────────────────────────────────────── */
.kr-app .kr-contact-card {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 32px;
    margin-top: 8px;
    animation: kr-fade .3s ease;
}
.kr-app .kr-contact-card h3 { margin: 0 0 6px; font-size: 1.25rem; font-weight: 700; }
.kr-app .kr-contact-intro   { color: #475569; margin: 0 0 24px; }

.kr-app .kr-form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.kr-app .kr-field { display: flex; flex-direction: column; gap: 6px; }
.kr-app .kr-field-full { grid-column: 1 / -1; }

.kr-app .kr-field label {
    font-weight: 600;
    font-size: .9rem;
    color: #475569;
    display: block;
    margin: 0;
    padding: 0;
    background: none;
    border: none;
    float: none;
    width: auto;
}
.kr-app .kr-field input,
.kr-app .kr-field textarea {
    border: 1.5px solid #e2e8f0 !important;
    border-radius: 8px !important;
    padding: 10px 14px !important;
    font-size: .95rem !important;
    font-family: inherit !important;
    transition: border-color .2s !important;
    outline: none !important;
    width: 100% !important;
    background: #fff !important;
    box-shadow: none !important;
    margin: 0 !important;
    display: block !important;
    height: auto !important;
    line-height: 1.5 !important;
    color: #1e293b !important;
    appearance: none !important;
    -webkit-appearance: none !important;
}
.kr-app .kr-field input:focus,
.kr-app .kr-field textarea:focus {
    border-color: var(--kr-primary) !important;
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--kr-primary) 15%, transparent) !important;
}
.kr-app .kr-field textarea { resize: vertical; }

.kr-app .kr-form-error {
    background: #fef2f2;
    border: 1px solid #fca5a5;
    color: #b91c1c;
    padding: 10px 14px;
    border-radius: 8px;
    font-size: .9rem;
    margin-top: 12px;
}

.kr-app .kr-submit-btn {
    display: block;
    width: 100%;
    margin-top: 20px;
    padding: 15px 24px;
    background: var(--kr-btn-next-bg);
    color: var(--kr-btn-next-text);
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: filter .2s, transform .1s;
    text-align: center;
    text-decoration: none;
}
.kr-app .kr-submit-btn:hover    { filter: brightness(.9); transform: translateY(-1px); }
.kr-app .kr-submit-btn:disabled { opacity: .6; cursor: not-allowed; transform: none; }

/* ── Success box ─────────────────────────────────────────────────────────── */
.kr-app .kr-success-box {
    text-align: center;
    padding: 48px 24px;
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: 12px;
    animation: kr-fade .4s ease;
}
.kr-app .kr-success-box h3 { font-size: 1.5rem; margin: 12px 0 8px; color: #15803d; }
.kr-app .kr-success-box p  { color: #166534; }

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
    .kr-app .kr-options { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
    .kr-app .kr-body          { flex-direction: column; }
    .kr-app .kr-sidebar       { width: 100%; }
    .kr-app .kr-options       { grid-template-columns: 1fr; }
    .kr-app .kr-title         { font-size: 1.5rem; }
    .kr-app .kr-form-grid     { grid-template-columns: 1fr; }
    .kr-app .kr-contact-card  { padding: 20px 16px; }
    .kr-app .kr-option.selected::after { width: 30px; height: 30px; top: -10px; right: -10px; font-size: .85rem; }
}