/* === SETUP & VARIABLES === */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@600;700&family=Inter:wght@400;500&display=swap');

:root {
    --primary-color: #6366f1; /* Indigo */
    --secondary-color: #8b5cf6; /* Purple */
    --accent-color: #06b6d4; /* Cyan */
    --background-color: #0f172a; /* Dark Navy */
    --surface-color: #1e293b; /* Slate */
    --text-color: #f8fafc; /* White */
    --muted-color: #94a3b8; /* Gray */
    --glow-color-primary: rgba(99, 102, 241, 0.5);
    --glow-color-accent: rgba(6, 182, 212, 0.5);

    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;

    --header-height: 80px;
    --border-radius: 12px;
    --transition-speed: 0.3s;
}

/* === GENERAL STYLES & RESET === */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--background-color);
    color: var(--text-color);
    font-family: var(--font-body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background-image:
        radial-gradient(circle at 1px 1px, rgba(255, 255, 255, 0.05) 1px, transparent 0);
    background-size: 20px 20px;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-color);
    color: white;
    padding: 8px;
    z-index: 100;
    transition: top var(--transition-speed) ease;
}

.skip-link:focus {
    top: 0;
}

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

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: clamp(2.5rem, 5vw, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color var(--transition-speed) ease;
}
a:hover, a:focus {
    color: var(--text-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: 6rem 0;
}

.text-center { text-align: center; }

.gradient-text {
    background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-fill-color: transparent;
}


/* === HEADER === */
.main-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
    height: var(--header-height);
    background-color: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(30, 41, 59, 0.5);
    transition: background-color var(--transition-speed) ease;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
}
.logo:hover { color: var(--text-color); }

.main-nav {
    display: none;
}

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

.main-nav a {
    color: var(--muted-color);
    font-weight: 500;
    position: relative;
    padding: 5px 0;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
    transition: width var(--transition-speed) ease;
}

.main-nav a:hover, .main-nav a:focus {
    color: var(--text-color);
}

.main-nav a:hover::after, .main-nav a:focus::after {
    width: 100%;
}

.hamburger-menu {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    width: 2rem;
    height: 2rem;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 10;
}

.hamburger-menu span {
    width: 2rem;
    height: 2px;
    background: var(--text-color);
    border-radius: 10px;
    transition: all var(--transition-speed) linear;
    position: relative;
    transform-origin: 1px;
}
.hamburger-menu.open span:nth-child(1) { transform: rotate(45deg); }
.hamburger-menu.open span:nth-child(2) { opacity: 0; transform: translateX(20px); }
.hamburger-menu.open span:nth-child(3) { transform: rotate(-45deg); }

/* === BUTTONS === */
.btn {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    border-radius: 50px;
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 1rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--text-color);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 300%;
    height: 300%;
    background: radial-gradient(circle, var(--accent-color), transparent);
    transform: translate(-50%, -50%) scale(0);
    transition: transform 0.5s ease;
    z-index: 0;
    opacity: 0.5;
}
.btn-primary:hover::before {
    transform: translate(-50%, -50%) scale(1);
}
.btn-primary:hover {
    box-shadow: 0 0 25px var(--glow-color-primary);
}

.btn-outline {
    background-color: transparent;
    color: var(--text-color);
    border-color: var(--surface-color);
}

.btn-outline:hover, .btn-outline:focus {
    background-color: var(--surface-color);
    color: var(--text-color);
    box-shadow: 0 0 15px rgba(30, 41, 59, 0.8);
}

.btn-text {
    background: transparent;
    color: var(--muted-color);
    padding: 0.5rem 1rem;
}
.btn-text:hover { color: var(--text-color); }


/* === HERO SECTION === */
.hero-section {
    min-height: calc(100vh - var(--header-height));
    display: flex;
    align-items: center;
    padding-top: 2rem;
    padding-bottom: 4rem;
    position: relative;
    overflow: hidden;
}
.hero-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
}
.hero-content .subtitle {
    font-size: 1.1rem;
    color: var(--muted-color);
    margin: 1.5rem 0 2.5rem;
    max-width: 600px;
}
.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}
.hero-image-wrapper {
    position: relative;
}
.hero-image {
    border-radius: var(--border-radius);
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5);
    z-index: 1;
    position: relative;
}
.shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(50px);
    z-index: 0;
}
.shape-1 {
    width: 200px;
    height: 200px;
    background: var(--primary-color);
    top: -50px;
    left: -50px;
    opacity: 0.5;
    animation: float 8s ease-in-out infinite;
}
.shape-2 {
    width: 300px;
    height: 300px;
    background: var(--secondary-color);
    bottom: -100px;
    right: -100px;
    opacity: 0.3;
    animation: float 10s ease-in-out infinite reverse;
}
.shape-3 {
    width: 150px;
    height: 150px;
    background: var(--accent-color);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.4;
    animation: float 12s ease-in-out infinite;
}
@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0px); }
}

/* === VERTRAUEN SECTION === */
.stats-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-top: 3rem;
}
.stat-box {
    background: var(--surface-color);
    padding: 2.5rem 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid rgba(148, 163, 184, 0.2);
}
.stat-box h3 {
    font-size: 3.5rem;
    margin-bottom: 0.5rem;
    color: var(--accent-color);
}
.stat-box p {
    color: var(--muted-color);
    font-size: 1.1rem;
}

/* === EINFÜHRUNG SECTION === */
.grid-2-col {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
}
.einfuehrung-content p {
    margin-bottom: 1.5rem;
    color: var(--muted-color);
}
.einfuehrung-image img {
    border-radius: var(--border-radius);
}

/* === VORTEILE SECTION === */
.vorteile-section {
    background-color: rgba(30, 41, 59, 0.3);
}
.vorteile-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-top: 3rem;
}
.vorteil-card {
    background-color: rgba(30, 41, 59, 0.5);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: var(--border-radius);
    padding: 2rem;
    transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}
.vorteil-card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 0 30px var(--glow-color-primary);
}
.vorteil-card .card-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    margin-bottom: 1.5rem;
}
.vorteil-card .card-icon svg {
    color: var(--text-color);
    width: 28px;
    height: 28px;
}
.vorteil-card h3 {
    margin-bottom: 0.8rem;
}
.vorteil-card p {
    color: var(--muted-color);
}

/* === METHODEN SECTION === */
.tabs-container {
    margin-top: 3rem;
}
.tab-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    border-bottom: 1px solid var(--surface-color);
    margin-bottom: 2rem;
}
.tab-button {
    padding: 1rem 1.5rem;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--muted-color);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: color var(--transition-speed) ease, border-color var(--transition-speed) ease;
}
.tab-button:hover {
    color: var(--text-color);
}
.tab-button.active {
    color: var(--text-color);
    border-color: var(--primary-color);
}
.tab-pane {
    display: none;
}
.tab-pane.active {
    display: block;
    animation: fadeIn 0.5s ease-in-out;
}
.tab-pane-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: center;
}
.tab-pane-content img {
    border-radius: var(--border-radius);
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
}
.tab-pane-content h3 {
    margin-bottom: 1rem;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* === ANWENDUNGSFÄLLE SECTION === */
.case-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-top: 3rem;
}
.case-card {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    border: 1px solid rgba(148, 163, 184, 0.2);
}
.case-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}
.case-content {
    padding: 2rem;
}
.case-content h3 {
    color: var(--accent-color);
}
.case-content ul {
    list-style: none;
    padding-left: 0;
    margin-top: 1rem;
}
.case-content ul li {
    padding-left: 1.5rem;
    position: relative;
    color: var(--muted-color);
    margin-bottom: 0.5rem;
}
.case-content ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-color);
}

/* === ZITAT SECTION === */
.zitat-section {
    background: linear-gradient(45deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
}
blockquote {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}
blockquote p {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-family: var(--font-heading);
    font-weight: 600;
    margin-bottom: 1.5rem;
    line-height: 1.4;
}
blockquote cite {
    font-style: normal;
    color: var(--muted-color);
}


/* === FAQ SECTION === */
.faq-accordion {
    max-width: 800px;
    margin: 3rem auto 0;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.faq-accordion details {
    background: var(--surface-color);
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: var(--border-radius);
}
.faq-accordion summary {
    padding: 1.5rem;
    font-size: 1.1rem;
    font-weight: 500;
    cursor: pointer;
    list-style: none;
    position: relative;
}
.faq-accordion summary::-webkit-details-marker { display: none; }
.faq-accordion summary::after {
    content: '+';
    position: absolute;
    right: 1.5rem;
    font-size: 1.5rem;
    transition: transform var(--transition-speed) ease;
}
.faq-accordion details[open] summary::after {
    transform: rotate(45deg);
}
.faq-accordion p {
    padding: 0 1.5rem 1.5rem;
    color: var(--muted-color);
}

/* === KONTAKT SECTION === */
.kontakt-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    margin-top: 3rem;
}
.kontakt-form .form-group {
    margin-bottom: 1.5rem;
}
.kontakt-form label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--muted-color);
}
.kontakt-form input, .kontakt-form textarea, .kontakt-form select {
    width: 100%;
    padding: 0.8rem 1rem;
    background-color: var(--surface-color);
    border: 1px solid rgba(148, 163, 184, 0.3);
    border-radius: 8px;
    color: var(--text-color);
    font-size: 1rem;
    font-family: var(--font-body);
}
.kontakt-form input:focus, .kontakt-form textarea:focus, .kontakt-form select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--glow-color-primary);
}
.form-group-checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}
.kontakt-info p {
    margin-bottom: 1.5rem;
}
.kontakt-info a {
    color: var(--muted-color);
}
.kontakt-info a:hover {
    color: var(--accent-color);
}
.map-container { margin-top: 2rem; }

/* === FOOTER === */
.main-footer {
    background-color: #0c1222;
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--surface-color);
}
.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}
.footer-col h4 {
    margin-bottom: 1.5rem;
    color: var(--text-color);
}
.footer-col p, .footer-col address {
    color: var(--muted-color);
    font-style: normal;
}
.footer-col ul {
    list-style: none;
}
.footer-col ul li {
    margin-bottom: 0.8rem;
}
.footer-col ul a {
    color: var(--muted-color);
}
.footer-col ul a:hover {
    color: var(--text-color);
}
.social-icons {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}
.social-icons a { opacity: 0.7; }
.social-icons a:hover { opacity: 1; }
.social-icons img { width: 24px; height: 24px; }
.footer-bottom {
    border-top: 1px solid var(--surface-color);
    padding-top: 2rem;
    text-align: center;
    color: var(--muted-color);
    font-size: 0.9rem;
}
.footer-bottom p { margin-bottom: 0.5rem; }
.footer-bottom .disclaimer {
    font-size: 0.8rem;
    opacity: 0.7;
    margin-top: 1rem;
}


/* === COOKIE BANNER === */
.cookie-banner {
    position: fixed;
    bottom: -200px;
    left: 0;
    right: 0;
    background-color: rgba(30, 41, 59, 0.9);
    backdrop-filter: blur(10px);
    padding: 1.5rem 0;
    z-index: 2000;
    border-top: 1px solid rgba(148, 163, 184, 0.2);
    transition: bottom 0.5s ease-in-out;
}
.cookie-banner.show {
    bottom: 0;
}
.cookie-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    text-align: center;
}
.cookie-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

/* === SCROLL ANIMATIONS === */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}


/* === MEDIA QUERIES (Mobile-first) === */
@media (min-width: 640px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .vorteile-grid { grid-template-columns: repeat(2, 1fr); }
    .case-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .cookie-container {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

@media (min-width: 768px) {
    .hamburger-menu { display: none; }
    .main-nav { display: block; }
    .main-nav.mobile-nav {
        display: block;
        position: static;
        transform: translateX(0);
        height: auto;
        width: auto;
        background: transparent;
        padding-top: 0;
    }

    .hero-container {
        grid-template-columns: 1.2fr 1fr;
        text-align: left;
    }
    .grid-2-col { grid-template-columns: 1fr 1fr; }
    .tab-pane-content { grid-template-columns: 300px 1fr; }
    .kontakt-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
}

@media (min-width: 1024px) {
    .vorteile-grid { grid-template-columns: repeat(3, 1fr); }
    .stats-grid { grid-template-columns: repeat(4, 1fr); }
}

/* === Contact Form Styles (Auto-Injected) === */
.contact-form-wrapper {
    background-color: var(--surface-color, #ffffff);
    padding: 2.5rem;
    border-radius: var(--border-radius, 8px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    border: 1px solid rgba(0,0,0,0.05);
    max-width: 600px;
    margin: 2rem auto;
}

.contact-form-wrapper h3 {
    margin-bottom: 1rem;
    color: var(--primary-color, #333);
}

.contact-form-wrapper p {
    margin-bottom: 2rem;
    color: var(--text-color, #666);
    opacity: 0.8;
}

.contact-form .form-group {
    margin-bottom: 1.5rem;
}

.contact-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color, #333);
}

.contact-form input,
.contact-form textarea,
.contact-form select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #ddd; /* Fallback border */
    border-radius: var(--border-radius, 4px);
    background-color: var(#ffffff, #fff);
    color: var(--text-color, #333);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
    outline: none;
    border-color: var(--primary-color, #007bff);
    box-shadow: 0 0 0 3px var(--primary-color);
}

.contact-form .submit-button {
    display: inline-block;
    width: 100%;
    padding: 1rem 2rem;
    background-color: var(--primary-color, #007bff);
    color: #ffffff;
    border: none;
    border-radius: var(--border-radius, 4px);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: filter 0.2s, transform 0.1s;
    margin-top: 1rem;
}

.contact-form .submit-button:hover {
    filter: brightness(110%);
    transform: translateY(-1px);
}

.contact-form .submit-button:active {
    transform: translateY(0);
}

@media (max-width: 768px) {
    .contact-form-wrapper {
        padding: 1.5rem;
    }
}