* {
    box-sizing: border-box;
}

:root {
    --green-dark: #2f5d50;
    --green-main: #4d7a6f;
    --green-light: #e7f0ed;
    --gray-dark: #3f4745;
    --gray-medium: #6b7471;
    --gray-light: #f4f6f5;
    --white: #ffffff;
    --border: #d7dfdc;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    color: var(--gray-dark);
    background: var(--gray-light);
    line-height: 1.6;
}

img {
    max-width: 100%;
    height: auto;
}

a {
    color: var(--green-dark);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.container {
    width: min(1100px, calc(100% - 40px));
    margin: 0 auto;
}

.site-header {
    background: var(--white);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 18px 0;
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    gap: 14px;
    text-decoration: none;
}

.logo-image {
    width: 100px;
    max-width: 100%;
    height: auto;
    display: block;
    flex-shrink: 0;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-main {
    font-size: 28px;
    font-weight: 700;
    color: var(--green-dark);
    line-height: 1.2;
}

.logo-sub {
    font-size: 13px;
    color: var(--gray-medium);
    margin-top: 4px;
    line-height: 1.2;
}

.nav-toggle {
    display: none;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 10px;
    cursor: pointer;
    width: 48px;
    height: 48px;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    gap: 5px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 3px;
    background: var(--green-dark);
    border-radius: 3px;
}

.main-nav ul {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.main-nav a {
    display: inline-block;
    padding: 10px 14px;
    border-radius: 8px;
    color: var(--gray-dark);
    font-weight: 600;
    transition: 0.2s ease;
}

.main-nav a:hover,
.main-nav a.active {
    background: var(--green-light);
    color: var(--green-dark);
    text-decoration: none;
}

.site-main {
    min-height: 70vh;
}

.hero {
    background: linear-gradient(135deg, var(--green-light), var(--white));
    padding: 80px 0 60px;
    border-bottom: 1px solid var(--border);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 35px;
    align-items: center;
}

.hero h1 {
    margin: 0 0 18px;
    font-size: 46px;
    line-height: 1.2;
    color: var(--green-dark);
}

.hero p {
    font-size: 18px;
    margin: 0 0 16px;
}

.notice-box {
    background: var(--white);
    border-left: 5px solid var(--green-main);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);
}

.section {
    padding: 60px 0;
}

.section h2 {
    font-size: 32px;
    margin-top: 0;
    margin-bottom: 18px;
    color: var(--green-dark);
}

.lead {
    font-size: 18px;
    color: var(--gray-medium);
    margin-bottom: 30px;
}

.cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 24px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.04);
}

.card h3 {
    margin-top: 0;
    color: var(--green-dark);
}

.content-box {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 30px;
}

.page-header {
    background: var(--green-light);
    padding: 50px 0;
    border-bottom: 1px solid var(--border);
}

.page-header h1 {
    margin: 0;
    color: var(--green-dark);
    font-size: 40px;
}

.site-footer {
    background: var(--gray-dark);
    color: #e8ecea;
    margin-top: 50px;
    padding-top: 40px;
}

.site-footer h3 {
    margin-top: 0;
    color: var(--white);
}

.site-footer a {
    color: #dcefe8;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    margin-top: 30px;
    padding: 18px 0;
    font-size: 14px;
    color: #cfd7d4;
}

.footer-bottom p {
    margin: 0;
}

.footer-bottom a {
    color: #dcefe8;
    text-decoration: none;
}

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

.button {
    display: inline-block;
    background: var(--green-dark);
    color: var(--white);
    padding: 13px 20px;
    border-radius: 10px;
    font-weight: 700;
    text-decoration: none;
    transition: 0.2s ease;
}

.button:hover {
    background: var(--green-main);
    text-decoration: none;
}

.button-outline {
    display: inline-block;
    border: 2px solid var(--green-dark);
    color: var(--green-dark);
    padding: 11px 18px;
    border-radius: 10px;
    font-weight: 700;
    text-decoration: none;
    margin-left: 10px;
}

.button-outline:hover {
    background: var(--green-light);
    text-decoration: none;
}

.list-clean {
    padding-left: 18px;
}

.cta-box {
    margin-top: 24px;
    text-align: center;
}

.form-wrapper {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 30px;
}

.contact-form {
    margin-top: 25px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group-full {
    grid-column: 1 / -1;
}

.form-group label,
.form-label {
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--green-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 13px 14px;
    border: 1px solid var(--border);
    border-radius: 10px;
    font-size: 16px;
    font-family: Arial, Helvetica, sans-serif;
    background: #fff;
}

.form-group textarea {
    resize: vertical;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--green-main);
    box-shadow: 0 0 0 3px rgba(77, 122, 111, 0.12);
}

.support-bereich-layout {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(280px, 1fr);
    gap: 20px;
    align-items: start;
    margin-top: 4px;
}

.radio-group {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.radio-group-support {
    align-self: start;
}

.radio-card {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--white);
    cursor: pointer;
    transition: 0.2s ease;
}

.radio-card:hover {
    border-color: var(--green-main);
    background: var(--green-light);
}

.radio-card input[type="radio"] {
    width: auto;
    margin: 3px 0 0 0;
    padding: 0;
    box-shadow: none;
    accent-color: var(--green-dark);
}

.radio-card span {
    display: block;
    line-height: 1.4;
}

.conditional-side-field {
    display: none;
    background: var(--green-light);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
}

.conditional-side-field.is-visible {
    display: flex;
    flex-direction: column;
}

.conditional-side-field label {
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--green-dark);
}

.form-check {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin: 20px 0 25px;
}

.form-check input {
    margin-top: 4px;
}

.message {
    padding: 16px 18px;
    border-radius: 10px;
    margin-bottom: 20px;
}

.message.success {
    background: #e8f5ec;
    border: 1px solid #b9ddc4;
    color: #215b32;
}

.message.error {
    background: #fff1f1;
    border: 1px solid #efc1c1;
    color: #8b2e2e;
}

.message ul {
    margin: 0;
    padding-left: 20px;
}

@media (max-width: 900px) {
    .hero-grid,
    .cards,
    .footer-grid,
    .radio-group,
    .support-bereich-layout {
        grid-template-columns: 1fr;
    }

    .header-inner {
        flex-wrap: wrap;
    }

    .logo {
        gap: 12px;
    }

    .logo-image {
        width: 100px;
    }

    .logo-main {
        font-size: 22px;
    }

    .logo-sub {
        font-size: 12px;
    }

    .nav-toggle {
        display: inline-flex;
        margin-left: auto;
    }

    .main-nav {
        display: none;
        width: 100%;
        margin-top: 15px;
    }

    .main-nav.nav-open {
        display: block;
    }

    .main-nav ul {
        flex-direction: column;
        gap: 10px;
        width: 100%;
    }

    .main-nav li {
        width: 100%;
    }

    .main-nav a {
        display: block;
        width: 100%;
        padding: 12px 14px;
        background: var(--white);
        border: 1px solid var(--border);
        border-radius: 10px;
    }

    .hero h1,
    .page-header h1 {
        font-size: 34px;
    }
}

@media (min-width: 901px) {
    .main-nav {
        display: block !important;
    }
}

@media (max-width: 700px) {
    .form-grid,
    .radio-group,
    .support-bereich-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .container {
        width: min(100%, calc(100% - 24px));
    }

    .main-nav ul {
        gap: 8px;
    }

    .main-nav a {
        padding: 12px;
        font-size: 15px;
    }

    .logo-image {
        width: 90px;
    }

    .logo-main {
        font-size: 20px;
    }

    .logo-sub {
        display: none;
    }

    .hero {
        padding: 60px 0 40px;
    }

    .hero h1 {
        font-size: 28px;
    }

    .hero p,
    .lead {
        font-size: 16px;
    }

    .section {
        padding: 40px 0;
    }

    .content-box,
    .card,
    .form-wrapper {
        padding: 20px;
    }

    .button,
    .button-outline {
        display: block;
        width: 100%;
        margin: 0 0 12px 0;
        text-align: center;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: 16px;
    }

    .footer-bottom {
        text-align: center;
        line-height: 1.8;
    }
}