/* ===== Basis & Variablen ===== */
:root {
    --color-primary: #1a3a5a;
    --color-primary-light: #2c5a8a;
    --color-accent: #4a6a9a;
    --color-text: #2d2d2d;
    --color-text-light: #5a5a5a;
    --color-bg: #f5f7fa;
    --color-white: #ffffff;
    --header-height: 100px;
    --top-bar-height: 44px;
    --shadow: 0 2px 20px rgba(0,0,0,0.08);
    --transition: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    padding-top: calc(var(--top-bar-height) + var(--header-height));
}

body.subpage {
    background: var(--color-white);
}

/* ===== Top-Leiste (feststehend) ===== */
.top-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--top-bar-height);
    background: #f5f5f5;
    color: #000000;
    z-index: 1001;
}

.top-bar-content {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 2rem;
    height: 100%;
}

.top-bar-link {
    color: #000000;
    text-decoration: none;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: opacity var(--transition);
}

.top-bar-link:hover {
    opacity: 0.85;
}

.top-bar-icon {
    width: 1rem;
    height: 1rem;
    flex-shrink: 0;
}

/* ===== Sticky Header ===== */
.header {
    position: fixed;
    top: var(--top-bar-height);
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--color-white);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: box-shadow var(--transition);
}

.header.scrolled {
    box-shadow: 0 4px 24px rgba(0,0,0,0.12);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    text-decoration: none;
    padding: 10px 0;
}

.logo-img {
    width: 80px;
    height: 80px;
    object-fit: contain;
    flex-shrink: 0;
}

.logo-text {
    font-family: Arial, sans-serif;
    font-size: 1.25rem;
    font-weight: 600;
    color: #000000;
}

/* Navigation */
.nav {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-list a {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
}

.nav-list a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width var(--transition);
}

.nav-list a:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-primary);
}

/* ===== Hero Video ===== */
.hero-section {
    position: relative;
    width: 100%;
    height: 85vh;
    min-height: 500px;
    overflow: hidden;
}

.hero-media {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.hero-content {
    position: absolute;
    bottom: 25%;
    left: 0;
    right: 0;
    padding: 0 1.5rem;
    text-align: center;
    z-index: 2;
}

.hero-content h1 {
    font-family: Arial, sans-serif;
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 0.75rem;
    text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.4rem);
    color: rgba(255,255,255,0.95);
    margin-bottom: 1.5rem;
}

.hero-content .btn-primary {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
}

.hero-content .btn-primary:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary-light);
    color: var(--color-white);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 4px;
    transition: all var(--transition);
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-white);
    border: 2px solid var(--color-accent);
}

.btn-primary:hover {
    background: transparent;
    color: var(--color-white);
}

.btn-secondary {
    background: var(--color-primary);
    color: var(--color-white);
    border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
    background: var(--color-primary-light);
}

/* ===== Sektionen ===== */
.section {
    padding: 5rem 0;
}

#ueber-uns {
    --about-content-width: calc(42rem + 100px);
}

#ueber-uns .section-title {
    margin-bottom: 3rem;
    max-width: var(--about-content-width);
    margin-left: auto;
    margin-right: auto;
}

#kontakt .section-title {
    margin-bottom: 3rem;
}

.section-alt {
    background: var(--color-white);
}

#kontakt,
.section-contact {
    background: var(--color-white);
}

.section-title {
    font-family: Arial, sans-serif;
    font-size: 2.25rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 1rem;
    text-align: center;
}

.services-intro {
    text-align: center;
    color: var(--color-text-light);
    max-width: calc(800px + 100px);
    margin: 0 auto 3rem;
    line-height: 1.7;
}

/* Über uns */
.about-text-centered {
    max-width: var(--about-content-width, calc(42rem + 100px));
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.about-text-centered .btn {
    margin-left: auto;
    margin-right: auto;
    display: inline-block;
}

.contact-image img {
    width: 100%;
    height: 600px;
    object-fit: cover;
    box-shadow: var(--shadow);
}

.about-text .lead {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.about-text p {
    margin-bottom: 1rem;
    color: var(--color-text-light);
}

.about-text .btn {
    margin-top: 1rem;
}

/* Leistungen */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.service-card {
    background: var(--color-white);
    overflow: hidden;
    transition: transform var(--transition);
}

.service-card:hover {
    transform: translateY(-4px);
}

.section-alt .service-card {
    background: var(--color-bg);
}

.service-image {
    overflow: hidden;
}

.service-image img {
    width: 100%;
    aspect-ratio: 1 / 1;
    height: auto;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.service-card:hover .service-image img {
    transform: scale(1.05);
}

.service-card h3 {
    font-family: Arial, sans-serif;
    font-size: 1.25rem;
    color: var(--color-primary);
    padding: 1.25rem 1.5rem 0.5rem;
}

.service-card p {
    padding: 0 1.5rem 1.5rem;
    font-size: 0.95rem;
    color: var(--color-text-light);
}

/* FAQ */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 2rem;
}

.faq-item:last-child {
    margin-bottom: 0;
}

.faq-question {
    font-family: Arial, sans-serif;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.faq-answer {
    color: var(--color-text-light);
    line-height: 1.7;
}

.contact-note {
    font-size: 0.9rem;
    margin-top: 1.5rem;
    font-style: italic;
}

/* Kontakt */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.contact-info h3 {
    font-family: Arial, sans-serif;
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.contact-info p {
    margin-bottom: 1rem;
    color: var(--color-text-light);
}

.contact-info a {
    color: var(--color-primary);
    text-decoration: none;
}

.contact-info a:hover {
    text-decoration: underline;
}

/* Footer */
.footer {
    background: var(--color-primary);
    color: var(--color-white);
    padding: 1.5rem;
    text-align: center;
}

.footer p {
    font-size: 0.9rem;
}

.footer-links {
    margin-top: 0.75rem;
    font-size: 0.9rem;
}

.footer-links a {
    color: var(--color-white);
    text-decoration: none;
}

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

.footer-links span {
    margin: 0 0.5rem;
    opacity: 0.7;
}

/* Unterseiten (Impressum, Datenschutz) */
.page-hero {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: var(--color-primary);
}

.page-hero img,
.page-hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 32%;
    display: block;
    pointer-events: none;
}

.subpage-main {
    padding: 3rem 0 5rem;
}

.subpage-main .container {
    max-width: 800px;
}

.subpage-main h1 {
    font-family: Arial, sans-serif;
    font-size: 2rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
}

.subpage-main h2 {
    font-family: Arial, sans-serif;
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--color-primary);
    margin: 2rem 0 0.75rem;
}

.subpage-main h3 {
    font-family: Arial, sans-serif;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-primary);
    margin: 1.25rem 0 0.5rem;
}

.subpage-main h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    margin: 1rem 0 0.5rem;
}

.subpage-main p,
.subpage-main li {
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: 0.75rem;
}

.subpage-main ul {
    margin: 0.5rem 0 1rem 1.25rem;
}

.subpage-main a {
    color: var(--color-primary);
}

.subpage-main .stand {
    margin-top: 2rem;
    font-size: 0.95rem;
    color: var(--color-text-light);
}

/* Nach-oben-Button */
.scroll-top-btn {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 1004;
    width: 48px;
    height: 48px;
    padding: 0;
    border: none;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-white);
    font-size: 1.15rem;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity var(--transition), visibility var(--transition), transform var(--transition), background var(--transition);
}

.scroll-top-btn.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-top-btn:hover {
    background: var(--color-primary-light);
}

.scroll-top-btn:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
}

.scroll-top-btn svg {
    display: block;
    margin: 0 auto;
}

/* ===== Responsive ===== */
@media (max-width: 992px) {
    .nav-list {
        position: fixed;
        top: calc(var(--top-bar-height) + var(--header-height));
        left: 0;
        right: 0;
        z-index: 1002;
        background: var(--color-white);
        flex-direction: column;
        padding: 2rem;
        gap: 1rem;
        box-shadow: var(--shadow);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transition: transform var(--transition), opacity var(--transition), visibility var(--transition);
    }

    .nav-list.open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
    }

    .nav-toggle {
        display: flex;
        z-index: 1003;
        position: relative;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-image {
        order: -1;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .top-bar-content {
        justify-content: center;
        gap: 1rem;
    }

    .top-bar-link {
        font-size: 0.8rem;
    }
}