@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Poppins:wght@600;700&display=swap');

:root {
    --primary-color: #0d4f8b;
    --secondary-color: #e67e22;
    --accent-color: #27ae60;
    --background-color: #f8fafc;
    --surface-color: #ffffff;
    --text-color: #1a202c;
    --muted-color: #64748b;
    --border-color: #e2e8f0;

    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;

    --border-radius: 6px;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px; /* Header height */
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
    -webkit-font-smoothing: antialiased;
}

.container {
    width: 100%;
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 20px;
}

h1, h2, h3 {
    font-family: var(--font-heading);
    color: var(--primary-color);
    line-height: 1.2;
}

h1 { font-size: 2.5rem; margin-bottom: 0.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.25rem; }

.section-title {
    text-align: center;
    margin-bottom: 1rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--secondary-color);
    border-radius: 2px;
}

.section-intro {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 3rem auto;
    color: var(--muted-color);
}

.section-padding { padding: 4rem 0; }
.section-bg { background-color: var(--surface-color); }

/* --- HEADER --- */
.header {
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    height: 80px;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--primary-color);
    text-decoration: none;
}

.main-nav { display: flex; gap: 1.5rem; }
.main-nav a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.2s ease;
    position: relative;
    padding: 0.5rem 0;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--secondary-color);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease-in-out;
}

.main-nav a:hover { color: var(--primary-color); }
.main-nav a:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.mobile-nav-toggle { display: none; }

/* --- HERO --- */
.hero {
    padding: 5rem 0;
    background-color: var(--surface-color);
}
.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: var(--accent-color);
    color: white;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
}
.subheadline {
    font-size: 1.1rem;
    color: var(--muted-color);
    margin: 1.5rem 0;
}
.hero-buttons { display: flex; gap: 1rem; }
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s ease;
    border: 2px solid transparent;
}
.btn-primary {
    background-color: var(--primary-color);
    color: white;
}
.btn-primary:hover {
    background-color: #0b4274;
}
.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
}
.btn-secondary:hover {
    background-color: #d35400;
}
.hero-image-wrapper img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
}

/* --- TRUST BADGES --- */
.trust-badges { padding: 2rem 0; }
.trust-badges-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}
.badge-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 1rem;
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}
.badge-item i {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    width: 32px;
    height: 32px;
}
.badge-number {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.2rem;
}
.badge-text {
    font-size: 0.9rem;
    color: var(--muted-color);
}

/* --- CARDS --- */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}
.card {
    background-color: var(--surface-color);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}
.card i {
    width: 48px;
    height: 48px;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}
.card h3 { margin-bottom: 0.5rem; }

/* --- ACCORDION --- */
.accordion { max-width: 800px; margin: 0 auto; }
.accordion-item {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 0.5rem;
    background-color: var(--surface-color);
}
.accordion-header {
    width: 100%;
    background-color: transparent;
    border: none;
    padding: 1rem 1.5rem;
    text-align: left;
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.accordion-header i {
    transition: transform 0.3s ease;
}
.accordion-item.active .accordion-header i {
    transform: rotate(180deg);
}
.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    padding: 0 1.5rem;
}
.accordion-item.active .accordion-content {
    padding-bottom: 1.5rem;
}
.accordion-content ul {
    list-style: none;
    padding-left: 0;
}
.accordion-content li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
}
.accordion-content li::before {
    content: '✓';
    color: var(--accent-color);
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* --- KOSTEN --- */
.kosten-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: start;
}
.kosten-tabelle {
    width: 100%;
    border-collapse: collapse;
}
.kosten-tabelle th, .kosten-tabelle td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}
.kosten-tabelle thead th {
    background-color: #eef2f7;
    font-weight: 600;
    color: var(--primary-color);
}
.kosten-tabelle tbody tr:nth-child(even) {
    background-color: var(--background-color);
}
.infobox {
    background-color: #eef2f7;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--secondary-color);
}
.infobox h3 { margin-bottom: 1rem; }
.infobox ul { list-style: none; }
.infobox li {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}
.infobox li.total { border-top: 1px solid var(--muted-color); padding-top: 0.5rem; margin-top: 0.5rem; }

/* --- RECHNER --- */
.rechner-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    background-color: var(--surface-color);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
}
.form-group { margin-bottom: 1.5rem; }
.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
}
.form-group output {
    font-weight: 600;
    color: var(--primary-color);
    margin-left: 1rem;
}
input[type="range"] {
    width: calc(100% - 100px);
    -webkit-appearance: none;
    appearance: none;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    outline: none;
    opacity: 0.9;
    transition: opacity .2s;
}
input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
}
input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
}
select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    background-color: white;
}
.rechner-outputs {
    background-color: #0d4f8b;
    color: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.output-item, .output-item-main { text-align: center; margin-bottom: 1.5rem; }
.output-item-main {
    border-top: 1px solid rgba(255,255,255,0.2);
    border-bottom: 1px solid rgba(255,255,255,0.2);
    padding: 1.5rem 0;
    margin: 1rem 0;
}
.output-item span, .output-item-main span {
    display: block;
    font-size: 0.9rem;
    opacity: 0.8;
}
.output-item strong { font-size: 1.8rem; font-weight: 600; }
.output-item-main strong { font-size: 3rem; font-weight: 700; color: var(--secondary-color); }
.hinweis { font-size: 0.8rem; text-align: center; opacity: 0.7; margin-top: auto; }

/* --- TIPPS --- */
.tipps-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}
.tipp-item {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    padding: 1.25rem;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    gap: 1rem;
}
.tipp-item span {
    display: flex;
    justify-content: center;
    align-items: center;
    min-width: 32px;
    height: 32px;
    background-color: var(--secondary-color);
    color: white;
    font-family: var(--font-heading);
    font-weight: 700;
    border-radius: 50%;
}

/* --- KONTAKT --- */
.kontakt-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}
.kontakt-info ul {
    list-style: none;
    margin: 2rem 0;
}
.kontakt-info li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}
.kontakt-info li i { color: var(--primary-color); }
.map-wrapper {
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
}
.contact-form .form-group { margin-bottom: 1rem; }
.contact-form input, .contact-form select, .contact-form textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-family: var(--font-body);
}
.contact-form .form-group-checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 1rem 0;
}
.contact-form .form-group-checkbox label { font-size: 0.9rem; }
.contact-form .form-group-checkbox a { color: var(--primary-color); }

/* --- FOOTER --- */
.footer {
    background-color: var(--primary-color);
    color: white;
    padding-top: 4rem;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 2rem;
    padding-bottom: 3rem;
}
.footer-col .logo { color: white; margin-bottom: 1rem; }
.footer-col p { color: rgba(255,255,255,0.8); }
.footer-col .small-text { font-size: 0.8rem; opacity: 0.7; margin-top: 1rem;}
.footer-col h4 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--secondary-color);
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 0.5rem; }
.footer-col ul a {
    text-decoration: none;
    color: rgba(255,255,255,0.8);
    transition: color 0.2s ease;
}
.footer-col ul a:hover { color: white; }
.newsletter-form { display: flex; }
.newsletter-form input {
    flex-grow: 1;
    border: none;
    padding: 0.75rem;
    border-radius: var(--border-radius) 0 0 var(--border-radius);
}
.newsletter-form .btn {
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    border: 2px solid var(--secondary-color);
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.2);
    padding: 1.5rem 0;
}
.footer-bottom .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: rgba(255,255,255,0.7);
}

/* --- RESPONSIVE --- */
@media (max-width: 992px) {
    .hero-grid { grid-template-columns: 1fr; text-align: center; }
    .hero-image-wrapper { order: -1; max-width: 500px; margin: 0 auto; }
    .hero-buttons { justify-content: center; }
    .cards-grid { grid-template-columns: 1fr 1fr; }
    .kosten-grid, .rechner-wrapper, .kontakt-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }

    .main-nav {
        position: fixed;
        top: 80px;
        right: 0;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: var(--surface-color);
        flex-direction: column;
        align-items: center;
        padding-top: 2rem;
        transform: translateX(100%);
        transition: transform 0.3s ease-in-out;
    }
    .main-nav.is-active { transform: translateX(0); }
    .main-nav a { font-size: 1.2rem; }
    .mobile-nav-toggle {
        display: block;
        background: none;
        border: none;
        cursor: pointer;
        z-index: 101;
    }

    .trust-badges-grid { grid-template-columns: 1fr 1fr; }
    .cards-grid, .tipps-grid { grid-template-columns: 1fr; }
    .footer-bottom .container { flex-direction: column; gap: 0.5rem; text-align: center; }
}

@media (max-width: 576px) {
    .trust-badges-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
}