/* === GRUNT STRATEGIE BERATUNG - CORPORATE STYLESHEET === */

/* --- GRUNDLAGEN & VARIABLEN --- */
:root {
    --color-midnight-blue: #0f172a;
    --color-silver: #94a3b8;
    --color-light-silver: #e2e8f0;
    --color-accent-red: #b91c1c;
    --color-dark-red: #991b1b;
    --color-white: #ffffff;
    --color-background-light: #1e293b;

    --font-structure: 'Roboto', sans-serif;
    --font-safety: 'Arial', sans-serif;

    --container-width: 1200px;
    --section-padding: 100px 0;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--color-midnight-blue);
    color: var(--color-silver);
    font-family: var(--font-safety);
    font-size: 16px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

h1, h2, h3, h4 {
    font-family: var(--font-structure);
    color: var(--color-light-silver);
    font-weight: 700;
    line-height: 1.2;
}

h1 { font-size: 4rem; margin-bottom: 1rem; }
h2 { font-size: 2.5rem; margin-bottom: 1rem; }
h3 { font-size: 1.75rem; margin-bottom: 0.75rem; }
h4 { font-size: 1.25rem; }

p { margin-bottom: 1rem; }
a { color: var(--color-accent-red); text-decoration: none; transition: color 0.3s ease; }
a:hover { color: var(--color-dark-red); }

.section-title {
    text-align: center;
    margin-bottom: 1rem;
}
.section-subtitle {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px auto;
    font-size: 1.1rem;
}

.btn {
    display: inline-block;
    padding: 12px 28px;
    font-family: var(--font-structure);
    font-weight: 700;
    text-transform: uppercase;
    border-radius: 4px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 2px solid transparent;
    font-size: 0.9rem;
    letter-spacing: 1px;
}

.btn-primary {
    background-color: var(--color-accent-red);
    color: var(--color-white);
}
.btn-primary:hover {
    background-color: var(--color-dark-red);
    color: var(--color-white);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-light-silver);
    border-color: var(--color-light-silver);
}
.btn-secondary:hover {
    background-color: var(--color-light-silver);
    color: var(--color-midnight-blue);
    transform: translateY(-2px);
}

/* --- HEADER --- */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    background-color: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-background-light);
    transition: background-color 0.3s ease;
}
.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-family: var(--font-structure);
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--color-light-silver);
    letter-spacing: 2px;
}
.logo:hover {
    color: var(--color-white);
}
.main-nav ul {
    list-style: none;
    display: flex;
    gap: 30px;
}
.main-nav a {
    color: var(--color-silver);
    font-family: var(--font-structure);
    font-weight: 400;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
    padding-bottom: 5px;
    border-bottom: 2px solid transparent;
}
.main-nav a:hover, .main-nav a.active {
    color: var(--color-white);
    border-bottom-color: var(--color-accent-red);
}
.cta-nav {
    border: 1px solid var(--color-accent-red);
    padding: 8px 15px;
    border-radius: 4px;
}
.cta-nav:hover {
    background-color: var(--color-accent-red);
    border-color: var(--color-accent-red) !important;
}

/* --- HERO SECTION --- */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}
.hero-video-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}
.hero-video-wrapper video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.75);
    z-index: 1;
}
.hero-content {
    position: relative;
    z-index: 2;
}
.hero-content .container {
    max-width: 900px;
}
.hero h1 {
    text-shadow: 2px 2px 10px rgba(0,0,0,0.5);
}
.hero .subline {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: var(--color-light-silver);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* --- SERVICES SECTION --- */
.services-section {
    padding: var(--section-padding);
    background-color: var(--color-background-light);
}
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}
.service-card {
    background-color: var(--color-midnight-blue);
    padding: 40px;
    border: 1px solid #2a3a55;
    border-radius: 8px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}
.service-icon {
    margin-bottom: 20px;
}
.service-icon svg {
    width: 48px;
    height: 48px;
    color: var(--color-accent-red);
}
.service-card h3 {
    color: var(--color-light-silver);
}
.service-card p {
    font-size: 0.95rem;
    margin-bottom: 0;
}

/* --- FACT SHEET SECTION --- */
.fact-sheet-section {
    padding: 80px 0;
    background-color: var(--color-midnight-blue);
}
.fact-sheet-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}
.fact-item {
    padding: 20px;
}
.fact-number {
    font-family: var(--font-structure);
    font-size: 4rem;
    font-weight: 900;
    color: var(--color-accent-red);
    display: block;
}
.fact-label {
    font-size: 1.1rem;
    color: var(--color-silver);
    margin-top: 5px;
}

/* --- INSIGHTS SECTION --- */
.insights-section {
    padding: var(--section-padding);
}
.insights-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.insight-card {
    background-color: var(--color-background-light);
    border-radius: 8px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    border: 1px solid #2a3a55;
    transition: transform 0.3s ease;
}
.insight-card:hover {
    transform: translateY(-5px);
}
.insight-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}
.insight-content {
    padding: 25px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}
.insight-category {
    display: inline-block;
    background-color: var(--color-accent-red);
    color: var(--color-white);
    padding: 4px 10px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    border-radius: 4px;
    margin-bottom: 15px;
    align-self: flex-start;
}
.insight-content h4 {
    margin-bottom: 10px;
}
.insight-content p {
    font-size: 0.9rem;
    flex-grow: 1;
}
.read-more {
    font-family: var(--font-structure);
    font-weight: 700;
    margin-top: auto;
}

/* --- CASE STUDY SECTION --- */
.case-study-section {
    padding: var(--section-padding);
    background-color: var(--color-background-light);
}
.case-study-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: center;
}
.case-study-image img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}
.case-study-content .section-title {
    text-align: left;
    margin-bottom: 0.5rem;
}
.case-study-content h3 {
    color: var(--color-silver);
    font-weight: 400;
    margin-bottom: 2rem;
}
.case-study-details h4 {
    color: var(--color-accent-red);
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}
.impact-list {
    list-style: none;
    padding-left: 0;
    margin-top: 1rem;
}
.impact-list li {
    padding-left: 25px;
    position: relative;
    margin-bottom: 0.5rem;
}
.impact-list li::before {
    content: '✓';
    color: var(--color-accent-red);
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* --- KARRIERE SECTION --- */
.karriere-section {
    padding: var(--section-padding);
    text-align: center;
    background-image: linear-gradient(rgba(15, 23, 42, 0.9), rgba(15, 23, 42, 0.9)), url('https://images.unsplash.com/photo-1542744173-8e7e53415bb0?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1740&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}
.karriere-section p {
    max-width: 700px;
    margin: 1rem auto 2rem auto;
    font-size: 1.1rem;
}

/* --- KONTAKT SECTION --- */
.kontakt-section {
    padding: var(--section-padding);
}
.kontakt-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    background-color: var(--color-background-light);
    padding: 60px;
    border-radius: 8px;
}
.kontakt-info p {
    font-size: 1.1rem;
}
.address-info {
    margin-top: 2rem;
    border-left: 3px solid var(--color-accent-red);
    padding-left: 20px;
}
.address-info h4 {
    color: var(--color-light-silver);
}
.address-info p {
    font-size: 1rem;
    line-height: 1.6;
}

/* Form Styles */
.form-group {
    margin-bottom: 20px;
}
.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 15px;
    background-color: var(--color-midnight-blue);
    border: 1px solid #334155;
    border-radius: 4px;
    color: var(--color-light-silver);
    font-family: var(--font-safety);
    font-size: 1rem;
    transition: border-color 0.3s ease;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent-red);
}
.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%2394a3b8' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 15px center;
    background-repeat: no-repeat;
    background-size: 1.5em;
}
.form-group-checkbox {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}
.form-group-checkbox input {
    width: auto;
    margin-right: 10px;
}
.form-group-checkbox label {
    font-size: 0.9rem;
    color: var(--color-silver);
}
.form-group-checkbox a {
    text-decoration: underline;
}
.full-width {
    width: 100%;
}

/* --- FOOTER --- */
.main-footer {
    background-color: #0c1221;
    padding: 60px 0 0 0;
    border-top: 1px solid var(--color-background-light);
}
.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}
.footer-col h4 {
    font-family: var(--font-structure);
    color: var(--color-light-silver);
    margin-bottom: 20px;
    font-size: 1.1rem;
}
.footer-col ul {
    list-style: none;
}
.footer-col ul li {
    margin-bottom: 10px;
}
.footer-col ul a {
    color: var(--color-silver);
}
.footer-col ul a:hover {
    color: var(--color-white);
    text-decoration: underline;
}
.map-container iframe {
    border-radius: 4px;
    filter: grayscale(100%) invert(90%);
}
.footer-bottom {
    border-top: 1px solid var(--color-background-light);
    padding: 20px 0;
    text-align: center;
    font-size: 0.9rem;
    color: #64748b;
}

/* --- 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);
}
.hero .animate-on-scroll:nth-child(1) { transition-delay: 0.2s; }
.hero .animate-on-scroll:nth-child(2) { transition-delay: 0.4s; }
.hero .animate-on-scroll:nth-child(3) { transition-delay: 0.6s; }


/* --- RESPONSIVE DESIGN --- */
@media (max-width: 1024px) {
    .insights-grid, .case-study-grid, .kontakt-grid {
        grid-template-columns: 1fr;
    }
    .fact-sheet-grid {
        grid-template-columns: 1fr 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    .case-study-image {
        margin-bottom: 30px;
    }
}

@media (max-width: 768px) {
    h1 { font-size: 3rem; }
    h2 { font-size: 2rem; }
    .main-header .container { flex-direction: column; gap: 15px; }
    .main-nav ul { gap: 20px; }
    .services-grid, .fact-sheet-grid, .footer-grid {
        grid-template-columns: 1fr;
    }
    .kontakt-grid { padding: 30px; }
    .hero { height: 80vh; }
}