/* MFM Fahrtkosten-Rechner Frontend Styles
 * Design wie Lena-Chatbot auf mfm.energy
 * Heller Content, dunkler Header, türkiser Akzent
 */

:root {
    --mfm-teal: #2dd4bf;
    --mfm-teal-dark: #14b8a6;
    --mfm-teal-light: #5eead4;
    --mfm-dark: #1e293b;
    --mfm-dark-header: #0f172a;
    --mfm-white: #ffffff;
    --mfm-gray-50: #f8fafc;
    --mfm-gray-100: #f1f5f9;
    --mfm-gray-200: #e2e8f0;
    --mfm-gray-300: #cbd5e1;
    --mfm-gray-400: #94a3b8;
    --mfm-gray-500: #64748b;
    --mfm-gray-600: #475569;
    --mfm-gray-700: #334155;
    --mfm-text: #1e293b;
    --mfm-text-muted: #64748b;
}

.mfm-fahrtkosten-calculator {
    max-width: 480px;
    margin: 0 auto;
    background: var(--mfm-white);
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    overflow: hidden;
}

/* Header - Dunkel wie Lena */
.mfm-fahrtkosten-header {
    background: var(--mfm-dark-header);
    padding: 20px 24px;
    border-bottom: 3px solid var(--mfm-teal);
}

.mfm-fahrtkosten-title {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--mfm-white);
}

.mfm-fahrtkosten-subtitle {
    margin: 4px 0 0;
    font-size: 0.85rem;
    color: var(--mfm-gray-400);
}

/* Content - Hell */
.mfm-fahrtkosten-content {
    padding: 24px;
    background: var(--mfm-white);
}

.mfm-form-group {
    margin-bottom: 20px;
}

.mfm-form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--mfm-text);
    font-size: 0.9rem;
}

.mfm-input {
    width: 100%;
    padding: 14px 16px;
    background: var(--mfm-gray-50);
    border: 2px solid var(--mfm-gray-200);
    border-radius: 10px;
    font-size: 1rem;
    color: var(--mfm-text);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    box-sizing: border-box;
}

.mfm-input:focus {
    outline: none;
    border-color: var(--mfm-teal);
    box-shadow: 0 0 0 3px rgba(45, 212, 191, 0.15);
    background: var(--mfm-white);
}

.mfm-input::placeholder {
    color: var(--mfm-gray-400);
}

.mfm-button {
    width: 100%;
    padding: 14px 24px;
    background: var(--mfm-teal);
    color: var(--mfm-dark);
    border: none;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.1s ease;
}

.mfm-button:hover {
    background: var(--mfm-teal-dark);
}

.mfm-button:active {
    transform: scale(0.98);
}

.mfm-button:disabled {
    background: var(--mfm-gray-300);
    color: var(--mfm-gray-500);
    cursor: not-allowed;
    transform: none;
}

/* Results */
.mfm-fahrtkosten-result {
    margin-top: 20px;
    padding: 20px;
    background: var(--mfm-gray-50);
    border-radius: 12px;
    border: 1px solid var(--mfm-gray-200);
}

.mfm-result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 16px;
    margin-bottom: 16px;
    border-bottom: 2px solid var(--mfm-teal);
}

.mfm-result-label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--mfm-text-muted);
}

.mfm-result-price {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--mfm-teal-dark);
}

.mfm-result-details {
    font-size: 0.9rem;
}

.mfm-detail-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    color: var(--mfm-text-muted);
    border-bottom: 1px solid var(--mfm-gray-200);
}

.mfm-detail-row:last-child {
    border-bottom: none;
}

.mfm-detail-row span:last-child {
    font-weight: 500;
    color: var(--mfm-text);
}

.mfm-detail-divider {
    margin-top: 10px;
    padding-top: 14px;
    border-top: 1px dashed var(--mfm-gray-300);
}

.mfm-detail-total {
    font-weight: 600;
}

.mfm-detail-total span:first-child {
    color: var(--mfm-text);
}

.mfm-detail-gross {
    font-size: 1.05rem;
    font-weight: 700;
    padding-top: 12px;
    margin-top: 8px;
    border-top: 2px solid var(--mfm-gray-200);
    border-bottom: none !important;
}

.mfm-detail-gross span:first-child {
    color: var(--mfm-text) !important;
}

.mfm-detail-gross span:last-child {
    color: var(--mfm-teal-dark) !important;
    font-size: 1.1rem;
}

.mfm-formula-info {
    margin-top: 16px;
    padding: 12px;
    background: var(--mfm-white);
    border-radius: 8px;
    border: 1px solid var(--mfm-gray-200);
    text-align: center;
}

.mfm-formula-info small {
    color: var(--mfm-text-muted);
    font-size: 0.8rem;
    line-height: 1.5;
}

/* Cache Badge */
.mfm-cache-badge {
    display: inline-block;
    padding: 3px 8px;
    background: var(--mfm-gray-100);
    color: var(--mfm-text-muted);
    font-size: 0.7rem;
    font-weight: 500;
    border-radius: 10px;
    margin-left: 8px;
    vertical-align: middle;
}

/* Error State */
.mfm-fahrtkosten-error {
    margin-top: 16px;
    padding: 14px 16px;
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 10px;
    color: #dc2626;
}

.mfm-fahrtkosten-error p {
    margin: 0;
    font-size: 0.9rem;
}

/* Loading State */
.mfm-fahrtkosten-loading {
    margin-top: 20px;
    padding: 32px;
    text-align: center;
    color: var(--mfm-text-muted);
}

.mfm-spinner {
    display: inline-block;
    width: 28px;
    height: 28px;
    border: 3px solid var(--mfm-gray-200);
    border-top: 3px solid var(--mfm-teal);
    border-radius: 50%;
    animation: mfm-spin 0.8s linear infinite;
    margin-bottom: 10px;
}

@keyframes mfm-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* MFM Brand Footer */
.mfm-brand-footer {
    padding: 14px 24px;
    background: var(--mfm-gray-50);
    border-top: 1px solid var(--mfm-gray-200);
    text-align: center;
    font-size: 0.75rem;
    color: var(--mfm-text-muted);
}

.mfm-brand-footer a {
    color: var(--mfm-teal-dark);
    text-decoration: none;
    font-weight: 500;
}

.mfm-brand-footer a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 480px) {
    .mfm-fahrtkosten-calculator {
        margin: 10px;
        border-radius: 12px;
    }
    
    .mfm-fahrtkosten-header {
        padding: 16px 20px;
    }
    
    .mfm-fahrtkosten-content {
        padding: 20px;
    }
    
    .mfm-fahrtkosten-title {
        font-size: 1.1rem;
    }
    
    .mfm-result-price {
        font-size: 1.5rem;
    }
    
    .mfm-button {
        padding: 12px 20px;
    }
}

/* ========================================
   MARKETING & ERKLÄRUNGS-STYLES
   ======================================== */

/* Marketing Intro */
.mfm-marketing-intro {
    margin-bottom: 20px;
    padding: 16px;
    background: linear-gradient(135deg, rgba(45, 212, 191, 0.08) 0%, rgba(45, 212, 191, 0.03) 100%);
    border-left: 3px solid var(--mfm-teal);
    border-radius: 0 10px 10px 0;
}

.mfm-marketing-intro p {
    margin: 0;
    font-size: 0.95rem;
    color: var(--mfm-text);
    line-height: 1.5;
}

/* Trust Badges */
.mfm-trust-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.mfm-trust-badge {
    display: inline-flex;
    align-items: center;
    padding: 6px 12px;
    background: var(--mfm-gray-50);
    border: 1px solid var(--mfm-gray-200);
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--mfm-text);
    white-space: nowrap;
}

.mfm-trust-badge:first-child {
    background: rgba(45, 212, 191, 0.1);
    border-color: var(--mfm-teal);
    color: var(--mfm-teal-dark);
    font-weight: 500;
}

/* Erklärungs-Intro */
.mfm-explanation-intro {
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px dashed var(--mfm-gray-200);
}

.mfm-explanation-intro p {
    margin: 0;
    font-size: 0.85rem;
    color: var(--mfm-text-muted);
    font-style: italic;
}

/* Kosten-Blöcke */
.mfm-cost-block {
    margin-bottom: 16px;
    padding: 14px;
    background: var(--mfm-gray-50);
    border-radius: 10px;
    border: 1px solid var(--mfm-gray-200);
}

.mfm-cost-block:last-of-type {
    margin-bottom: 0;
}

.mfm-cost-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--mfm-gray-200);
}

.mfm-cost-icon {
    font-size: 1.1rem;
}

.mfm-cost-title {
    flex: 1;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--mfm-text);
}

.mfm-info-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    padding: 0;
    background: var(--mfm-white);
    border: 1px solid var(--mfm-gray-300);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.2s ease;
}

.mfm-info-toggle:hover {
    background: var(--mfm-teal);
    border-color: var(--mfm-teal);
}

.mfm-info-toggle:hover .mfm-info-icon {
    filter: brightness(0) invert(1);
}

.mfm-info-icon {
    font-size: 0.85rem;
    line-height: 1;
}

.mfm-cost-details {
    padding-left: 4px;
}

.mfm-cost-details .mfm-detail-row {
    padding: 6px 0;
    border-bottom: none;
    font-size: 0.85rem;
}

.mfm-cost-details .mfm-detail-row:last-child {
    padding-bottom: 0;
}

.mfm-detail-cost {
    margin-top: 6px;
    padding-top: 8px !important;
    border-top: 1px dashed var(--mfm-gray-300) !important;
}

.mfm-detail-cost span:last-child {
    font-weight: 600;
    color: var(--mfm-teal-dark);
}

/* Erklärungen */
.mfm-explanation {
    margin-top: 12px;
    padding: 12px;
    background: rgba(45, 212, 191, 0.08);
    border-radius: 8px;
    border-left: 3px solid var(--mfm-teal);
    animation: mfm-slideDown 0.3s ease;
}

@keyframes mfm-slideDown {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.mfm-explanation p {
    margin: 0;
    font-size: 0.8rem;
    color: var(--mfm-text);
    line-height: 1.5;
}

/* Expanded Modus - direkt sichtbar */
.mfm-explanation-expanded {
    display: block !important;
    margin-top: 12px;
    padding: 12px;
    background: rgba(45, 212, 191, 0.08);
    border-radius: 8px;
    border-left: 3px solid var(--mfm-teal);
}

.mfm-explanation-expanded p {
    margin: 0;
    font-size: 0.8rem;
    color: var(--mfm-text);
    line-height: 1.5;
}

.mfm-explanation-simple {
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px dotted var(--mfm-gray-300);
}

.mfm-explanation-simple small {
    color: var(--mfm-text-muted);
    font-size: 0.75rem;
    line-height: 1.4;
}

/* Entfernung ohne km-Kosten */
.mfm-distance-only {
    padding: 8px 14px;
    background: var(--mfm-gray-50);
    border-radius: 8px;
    margin-bottom: 12px;
}

.mfm-distance-only .mfm-detail-row {
    border: none;
    padding: 0;
    font-size: 0.85rem;
}

/* Summen-Block */
.mfm-sum-block {
    margin-top: 16px;
    padding: 16px;
    background: var(--mfm-dark-header);
    border-radius: 10px;
}

.mfm-sum-block .mfm-detail-row {
    color: var(--mfm-gray-300);
    border-bottom-color: var(--mfm-gray-600);
}

.mfm-sum-block .mfm-detail-row span:last-child {
    color: var(--mfm-white);
}

.mfm-sum-block .mfm-detail-total {
    color: var(--mfm-gray-400);
}

.mfm-sum-block .mfm-detail-vat {
    font-size: 0.8rem;
    color: var(--mfm-gray-400);
}

.mfm-sum-block .mfm-detail-gross {
    margin-top: 8px;
    padding-top: 10px;
    border-top: 2px solid var(--mfm-teal);
    font-size: 1.05rem;
}

.mfm-sum-block .mfm-detail-gross span:first-child {
    color: var(--mfm-white);
    font-weight: 600;
}

.mfm-sum-block .mfm-detail-gross span:last-child {
    color: var(--mfm-teal);
    font-weight: 700;
    font-size: 1.2rem;
}

/* Formel Details */
.mfm-formula-info {
    margin-top: 16px;
}

.mfm-formula-info details {
    background: var(--mfm-gray-50);
    border-radius: 8px;
    border: 1px solid var(--mfm-gray-200);
}

.mfm-formula-info summary {
    padding: 10px 14px;
    font-size: 0.8rem;
    color: var(--mfm-text-muted);
    cursor: pointer;
    list-style: none;
}

.mfm-formula-info summary::-webkit-details-marker {
    display: none;
}

.mfm-formula-info summary::before {
    content: "▶ ";
    font-size: 0.7rem;
    transition: transform 0.2s ease;
    display: inline-block;
}

.mfm-formula-info details[open] summary::before {
    transform: rotate(90deg);
}

.mfm-formula-info details[open] summary {
    border-bottom: 1px solid var(--mfm-gray-200);
}

.mfm-formula-info small {
    display: block;
    padding: 12px 14px;
    font-size: 0.75rem;
    color: var(--mfm-text-muted);
    font-family: monospace;
    line-height: 1.6;
    word-break: break-word;
}

/* Call-to-Action Block */
.mfm-cta-block {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--mfm-gray-200);
}

.mfm-cta-phone {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 20px;
    background: var(--mfm-white);
    border: 2px solid var(--mfm-teal);
    border-radius: 10px;
    color: var(--mfm-teal-dark);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.2s ease;
}

.mfm-cta-phone:hover {
    background: var(--mfm-teal);
    color: var(--mfm-white);
}

.mfm-cta-button {
    display: block;
    padding: 14px 20px;
    background: var(--mfm-teal);
    border-radius: 10px;
    color: var(--mfm-dark);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    transition: all 0.2s ease;
}

.mfm-cta-button:hover {
    background: var(--mfm-teal-dark);
    color: var(--mfm-white);
}

/* Transparenz-Hinweis */
.mfm-transparency-note {
    margin-top: 16px;
    padding: 14px;
    background: linear-gradient(135deg, #fef9c3 0%, #fef3c7 100%);
    border-radius: 10px;
    border: 1px solid #fcd34d;
}

.mfm-transparency-note p {
    margin: 0;
    font-size: 0.8rem;
    color: #92400e;
    line-height: 1.5;
}

.mfm-transparency-note strong {
    color: #78350f;
}

/* Responsive Marketing */
@media (max-width: 480px) {
    .mfm-trust-badges {
        gap: 6px;
    }
    
    .mfm-trust-badge {
        padding: 5px 10px;
        font-size: 0.75rem;
    }
    
    .mfm-cost-block {
        padding: 12px;
    }
    
    .mfm-cta-block {
        gap: 8px;
    }
    
    .mfm-cta-phone,
    .mfm-cta-button {
        padding: 12px 16px;
        font-size: 0.9rem;
    }
}

/* ========================================
   SIDEBAR WIDGET STYLES
   ======================================== */

.mfm-fahrtkosten-widget {
    background: var(--mfm-white, #ffffff);
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* Widget Header */
.mfm-widget-header {
    background: #0f172a;
    padding: 14px 16px;
    border-bottom: 2px solid #2dd4bf;
}

.mfm-widget-title {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: #ffffff;
}

.mfm-widget-subtitle {
    display: block;
    margin-top: 2px;
    font-size: 0.75rem;
    color: #94a3b8;
}

/* Widget Content */
.mfm-widget-content {
    padding: 16px;
}

/* Widget Form */
.mfm-widget-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.mfm-widget-input {
    width: 100%;
    padding: 12px 14px;
    background: #f8fafc;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 0.9rem;
    color: #1e293b;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    box-sizing: border-box;
}

.mfm-widget-input:focus {
    outline: none;
    border-color: #2dd4bf;
    box-shadow: 0 0 0 3px rgba(45, 212, 191, 0.15);
    background: #ffffff;
}

.mfm-widget-input::placeholder {
    color: #94a3b8;
}

.mfm-widget-button {
    width: 100%;
    padding: 12px 16px;
    background: #2dd4bf;
    color: #0f172a;
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s ease;
}

.mfm-widget-button:hover {
    background: #14b8a6;
}

.mfm-widget-button:disabled {
    background: #cbd5e1;
    color: #64748b;
    cursor: not-allowed;
}

/* Widget Result */
.mfm-widget-result {
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid #e2e8f0;
}

.mfm-widget-result-main {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 10px;
    border-bottom: 2px solid #2dd4bf;
}

.mfm-widget-result-label {
    font-size: 0.85rem;
    color: #64748b;
}

.mfm-widget-result-price {
    font-size: 1.4rem;
    font-weight: 700;
    color: #14b8a6;
}

/* Widget Result Details */
.mfm-widget-result-details {
    margin-top: 10px;
}

.mfm-widget-detail {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    font-size: 0.8rem;
    color: #64748b;
    border-bottom: 1px solid #f1f5f9;
}

.mfm-widget-detail:last-child {
    border-bottom: none;
}

.mfm-widget-detail span:last-child {
    font-weight: 500;
    color: #1e293b;
}

.mfm-widget-detail-total {
    margin-top: 6px;
    padding-top: 8px;
    border-top: 1px dashed #cbd5e1;
}

.mfm-widget-detail-total span:last-child {
    font-weight: 600;
    color: #14b8a6;
}

/* Details Link */
.mfm-widget-details-link {
    display: block;
    margin-top: 12px;
    padding-top: 10px;
    border-top: 1px solid #e2e8f0;
    font-size: 0.8rem;
    color: #14b8a6;
    text-decoration: none;
    text-align: center;
}

.mfm-widget-details-link:hover {
    color: #0d9488;
    text-decoration: underline;
}

/* Widget Error */
.mfm-widget-error {
    margin-top: 12px;
    padding: 10px 12px;
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 6px;
    font-size: 0.8rem;
    color: #dc2626;
}

/* Widget Loading */
.mfm-widget-loading {
    margin-top: 12px;
    text-align: center;
    padding: 16px;
}

.mfm-widget-spinner {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid #e2e8f0;
    border-top: 3px solid #2dd4bf;
    border-radius: 50%;
    animation: mfm-spin 0.8s linear infinite;
}

/* Compact Mode */
.mfm-widget-compact .mfm-widget-content {
    padding: 12px;
}

.mfm-widget-compact .mfm-widget-input {
    padding: 10px 12px;
    font-size: 0.85rem;
}

.mfm-widget-compact .mfm-widget-button {
    padding: 10px 14px;
    font-size: 0.85rem;
}

.mfm-widget-compact .mfm-widget-result-price {
    font-size: 1.2rem;
}

/* Widget in dunklem Theme */
.widget_mfm_fahrtkosten_widget.dark-theme .mfm-fahrtkosten-widget,
.mfm-fahrtkosten-widget.mfm-widget-dark {
    background: #1e293b;
}

.mfm-fahrtkosten-widget.mfm-widget-dark .mfm-widget-content {
    background: #1e293b;
}

.mfm-fahrtkosten-widget.mfm-widget-dark .mfm-widget-input {
    background: #334155;
    border-color: #475569;
    color: #f1f5f9;
}

.mfm-fahrtkosten-widget.mfm-widget-dark .mfm-widget-input::placeholder {
    color: #94a3b8;
}

.mfm-fahrtkosten-widget.mfm-widget-dark .mfm-widget-result {
    border-top-color: #475569;
}

.mfm-fahrtkosten-widget.mfm-widget-dark .mfm-widget-detail {
    color: #94a3b8;
    border-bottom-color: #334155;
}

.mfm-fahrtkosten-widget.mfm-widget-dark .mfm-widget-detail span:last-child {
    color: #f1f5f9;
}

.mfm-fahrtkosten-widget.mfm-widget-dark .mfm-widget-details-link {
    border-top-color: #475569;
}