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

:root {
    --color-primary: #1E3A8A;
    --color-secondary: #0EA5E9;
    --color-accent: #10B981;
    --color-background: #F8FAFC;
    --color-surface: #FFFFFF;
    --color-text: #0F172A;
    --color-muted: #94A3B8;
    --color-border: #E2E8F0;
    --color-success: #16A34A;
    --color-warning: #F59E0B;
    --color-error: #DC2626;
    --font-family: 'Inter', Arial, sans-serif;
    --container-width: 1200px;
    --gutter: 24px;
    --transition: 150ms ease-in-out;
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-family);
    color: var(--color-text);
    background-color: var(--color-background);
    line-height: 1.6;
}

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

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

a:hover {
    text-decoration: underline;
}

p {
    margin-top: 0;
}

h1, h2, h3, h4 {
    color: var(--color-text);
    font-weight: 700;
    margin-top: 0;
}

h1 {
    font-size: 2.75rem;
    line-height: 1.2;
    margin-bottom: 20px;
}

h2 {
    font-size: 2.1rem;
    line-height: 1.3;
    margin-bottom: 16px;
}

h3 {
    font-size: 1.4rem;
    line-height: 1.4;
    margin-bottom: 12px;
}

.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--gutter);
}

.grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--gutter);
}

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

.cards .card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 12px 24px rgba(15, 23, 42, 0.05);
    transition: box-shadow var(--transition), transform var(--transition);
}

.cards .card:hover {
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
    transform: translateY(-4px);
}

.col-12 { flex: 0 0 calc(100% - var(--gutter)); max-width: calc(100% - var(--gutter)); }
.col-6 { flex: 0 0 calc(50% - var(--gutter)); max-width: calc(50% - var(--gutter)); }
.col-4 { flex: 0 0 calc(33.333% - var(--gutter)); max-width: calc(33.333% - var(--gutter)); }
.col-3 { flex: 0 0 calc(25% - var(--gutter)); max-width: calc(25% - var(--gutter)); }

.col-md-12 { flex: 0 0 calc(50% - var(--gutter)); max-width: calc(50% - var(--gutter)); }
.col-sm-12 { flex: 0 0 calc(100% - var(--gutter)); max-width: calc(100% - var(--gutter)); }

@media (max-width: 1024px) {
    .col-md-12 {
        flex: 0 0 calc(100% - var(--gutter));
        max-width: calc(100% - var(--gutter));
    }
    .cards .card {
        padding: 20px;
    }
}

@media (max-width: 768px) {
    .grid {
        gap: 20px;
    }
    .col-6, .col-4, .col-3 {
        flex: 0 0 calc(100% - var(--gutter));
        max-width: calc(100% - var(--gutter));
    }
    h1 {
        font-size: 2.2rem;
    }
    h2 {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 0.95rem;
    }
}

.site-header {
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 72px;
}

.logo-image {
    height: 50px;
    width: auto;
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 24px;
    margin: 0;
    padding: 0;
}

.main-nav a {
    font-weight: 500;
    color: var(--color-text);
    padding: 8px 0;
}

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

.nav-toggle {
    display: none;
}

.nav-toggle-label {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
}

.nav-toggle-label span {
    display: block;
    width: 28px;
    height: 3px;
    background-color: var(--color-text);
}

.mobile-menu {
    display: none;
}

@media (max-width: 900px) {
    .main-nav {
        display: none;
    }
    .nav-toggle-label {
        display: flex;
    }
    .nav-toggle:checked ~ .mobile-menu {
        display: block;
        position: fixed;
        inset: 0;
        background-color: rgba(15, 23, 42, 0.96);
        color: #FFFFFF;
        padding: 24px;
    }
    .mobile-menu-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-weight: 600;
        font-size: 1.1rem;
        margin-bottom: 32px;
    }
    .mobile-close {
        font-size: 2rem;
        color: #FFFFFF;
        cursor: pointer;
    }
    .mobile-menu ul {
        list-style: none;
        padding: 0;
        margin: 0;
    }
    .mobile-menu li {
        margin-bottom: 24px;
    }
    .mobile-menu a {
        color: #FFFFFF;
        font-size: 1.4rem;
    }
}

.hero {
    padding: 80px 0;
    background: radial-gradient(circle at top right, rgba(14, 165, 233, 0.12), transparent), var(--color-background);
}

.hero-secondary {
    padding: 64px 0;
    background-color: var(--color-background);
}

.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-header p {
    max-width: 720px;
    margin: 12px auto 0 auto;
    color: var(--color-muted);
}

.metrics, .method, .skrs, .compliance, .templates, .integration, .cases, .faq, .contact-cta, .story, .capabilities, .infrastructure, .berlin, .timeline, .service-list, .service-detail, .deliverables, .service-image, .contact-info, .process, .submission, .legal {
    padding: 80px 0;
}

.checklist {
    list-style: none;
    padding: 0;
    margin: 0;
}

.checklist li {
    position: relative;
    padding-left: 28px;
    margin-bottom: 12px;
    color: var(--color-text);
}

.checklist li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 6px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background-color: var(--color-accent);
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: 600;
    border: 1px solid transparent;
    cursor: pointer;
    transition: background-color var(--transition), color var(--transition), border-color var(--transition);
}

.button.primary {
    background-color: var(--color-primary);
    color: #FFFFFF;
}

.button.primary:hover {
    background-color: #162b63;
}

.button.secondary {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.button.secondary:hover {
    background-color: rgba(30, 58, 138, 0.08);
}

.cta-group {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.responsive-image {
    border-radius: 16px;
    border: 1px solid var(--color-border);
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.12);
}

.faq-list details {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 16px 20px;
    margin-bottom: 16px;
}

.faq-list summary {
    cursor: pointer;
    font-weight: 600;
}

.faq-list summary::-webkit-details-marker {
    display: none;
}

.faq-list summary::after {
    content: '+';
    float: right;
    font-weight: 600;
    color: var(--color-primary);
}

.faq-list details[open] summary::after {
    content: '–';
}

.faq-list p {
    margin-top: 12px;
    color: var(--color-muted);
}

.contact-form {
    background-color: var(--color-surface);
    border-radius: 16px;
    border: 1px solid var(--color-border);
    padding: 24px;
    box-shadow: 0 12px 24px rgba(15, 23, 42, 0.05);
}

.contact-form label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid var(--color-border);
    background-color: #FFFFFF;
    font-family: var(--font-family);
    transition: border-color var(--transition), box-shadow var(--transition);
    margin-bottom: 16px;
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--color-secondary);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.2);
    outline: none;
}

.honeypot {
    display: none;
}

.timeline-list {
    border-left: 3px solid var(--color-primary);
    padding-left: 24px;
}

.timeline-item {
    position: relative;
    margin-bottom: 32px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -35px;
    top: 8px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--color-primary);
}

.timeline-date {
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.timeline-content {
    background-color: var(--color-surface);
    border-radius: 12px;
    border: 1px solid var(--color-border);
    padding: 20px;
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.table th,
.table td {
    border: 1px solid var(--color-border);
    padding: 12px;
    text-align: left;
}

.table thead {
    background-color: rgba(30, 58, 138, 0.08);
}

.site-footer {
    background-color: var(--color-text);
    color: #FFFFFF;
    padding: 48px 0 24px 0;
}

.footer-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--gutter);
}

.footer-brand,
.footer-nav,
.footer-legal {
    flex: 1;
    min-width: 220px;
}

.footer-logo {
    height: 100px;
    width: auto;
    margin-bottom: 16px;
}

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

.site-footer h3 {
    color: #FFFFFF;
    font-size: 1.1rem;
    margin-bottom: 16px;
}

.site-footer ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.site-footer li {
    margin-bottom: 10px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    margin-top: 32px;
    padding-top: 16px;
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
}

.cookie-banner {
    position: fixed;
    bottom: 24px;
    right: 24px;
    max-width: 360px;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 12px 24px rgba(15, 23, 42, 0.18);
    display: none;
    z-index: 2000;
}

.cookie-banner.active {
    display: block;
}

.cookie-content p {
    margin-bottom: 16px;
    color: var(--color-text);
}

.cookie-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

@media (max-width: 640px) {
    .cookie-banner {
        left: 16px;
        right: 16px;
        max-width: none;
    }
}

.submission-details {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 24px;
}

.submission-details p {
    margin-bottom: 12px;
}