:root {
    --navy: #102e4a;
    --blue: #235c91;
    --light-blue: #eaf2f8;
    --text: #172330;
    --muted: #657585;
    --white: #ffffff;
    --border: #dce5ec;

    --max-width: 1240px;
}


* {
    box-sizing: border-box;
}


html {
    scroll-behavior: smooth;
}


body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    color: var(--text);
    background: var(--white);
}


a {
    color: inherit;
    text-decoration: none;
}


.container {
    width: min(calc(100% - 48px), var(--max-width));
    margin-inline: auto;
}


/* HEADER */

.site-header {
    background: rgba(255,255,255,0.96);
    border-bottom: 1px solid var(--border);
}


.header-inner {
    min-height: 92px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}


.brand {
    display: flex;
    flex-direction: column;
    gap: 9px;
    text-decoration: none;
}

.brand:hover,
.brand:focus,
.brand:visited {
    text-decoration: none;
}


.brand-name {
    font-family: Georgia, "Times New Roman", serif;
    font-size: 1.72rem;
    font-weight: 500;
    line-height: 1;
    letter-spacing: 0.025em;
    color: #092a5e;
}


.brand-subtitle {
    color: var(--blue);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.13em;
}


.main-nav {
    display: flex;
    align-items: center;
    gap: 32px;
}


.main-nav a {
    position: relative;
    padding: 34px 0 31px;
    color: var(--muted);
    font-size: 0.95rem;
    font-weight: 600;
}


.main-nav a:hover,
.main-nav a.active {
    color: var(--navy);
}


.main-nav a.active::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 20px;
    height: 2px;
    background: var(--blue);
}


/* HERO */

.hero {
    min-height: calc(100vh - 93px);
    display: flex;
    align-items: center;
    overflow: hidden;
}


.hero-grid {
    display: grid;
    grid-template-columns: 1.25fr 0.75fr;
    align-items: center;
    gap: 40px;
    padding-block: 64px;
}


.eyebrow {
    margin: 0 0 22px;
    color: var(--blue);
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.04em;
}


h1 {
    margin: 0;
    color: var(--navy);
    font-size: clamp(2.55rem, 3vw, 3rem);
    line-height: 1.05;
    letter-spacing: -0.03em;
}


.hero-text {
    max-width: 650px;
    margin: 32px 0 0;
    color: var(--muted);
    font-size: 1.12rem;
    line-height: 1.75;
}


.hero-actions {
    display: flex;
    gap: 16px;
    margin-top: 38px;
}


.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 24px;
    border: 1px solid var(--blue);
    border-radius: 4px;
    font-weight: 700;
}


.button-primary {
    color: var(--white);
    background: var(--blue);
}


.button-secondary {
    color: var(--blue);
    background: var(--white);
}


/* VISUAL */

.hero-visual {
    position: relative;
    min-height: 560px;
    display: grid;
    place-items: center;
}


.blueprint-circle {
    position: absolute;
    width: 520px;
    height: 520px;
    border: 1px solid #dce9f2;
    border-radius: 50%;
}


.blueprint-circle::before,
.blueprint-circle::after {
    content: "";
    position: absolute;
    inset: 55px;
    border: 1px dashed #dce9f2;
    border-radius: 50%;
}


.blueprint-circle::after {
    inset: 120px;
}


.visual-placeholder {
    position: relative;
    z-index: 2;
    width: 72%;
    aspect-ratio: 4 / 5;
    display: grid;
    place-items: center;
    color: #8aa0b2;
    border: 1px dashed #b9cad7;
    background: rgba(244,248,251,0.78);
}


/* RESPONSIVE */

@media (max-width: 900px) {

    .header-inner {
        align-items: flex-start;
        flex-direction: column;
        padding-block: 22px;
    }

    .main-nav {
        width: 100%;
        gap: 20px;
        overflow-x: auto;
    }

    .main-nav a {
        padding: 8px 0 16px;
        white-space: nowrap;
    }

    .main-nav a.active::after {
        bottom: 7px;
    }

    .hero-grid {
        grid-template-columns: 1fr;
        gap: 30px;
        padding-block: 60px;
    }

    .hero-visual {
        min-height: 400px;
    }

    .blueprint-circle {
        width: 380px;
        height: 380px;
    }
}


@media (max-width: 600px) {

    .container {
        width: min(calc(100% - 30px), var(--max-width));
    }

    h1 {
        font-size: clamp(2.3rem, 12vw, 3.5rem);
    }

    .hero-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .hero-visual {
        min-height: 340px;
    }
}


/* =========================================================
   SITE FOOTER – LEGAL
   ========================================================= */

.site-footer {
    padding: 25px 0;

    background: #ffffff;

    border-top: 1px solid #e2e9f1;
}

.site-footer-inner {
    display: flex;

    align-items: center;
    justify-content: space-between;

    gap: 30px;
}

.site-footer-copy {
    margin: 0;

    color: #8491a0;

    font-size: 0.78rem;
}

.site-footer-links {
    display: flex;

    align-items: center;

    gap: 19px;
}

.site-footer-links a {
    color: #66778a;

    font-size: 0.78rem;
    font-weight: 600;

    text-decoration: none;
}

.site-footer-links a:hover {
    color: #195cc4;
}

.site-footer-separator {
    color: #c4ced9;

    font-size: 0.7rem;
}

@media (max-width: 620px) {

    .site-footer-inner {
        flex-direction: column;

        align-items: flex-start;

        gap: 12px;
    }

}


/* CORPORATE BRAND COLORS 2026 START */


/* =========================================================
   ZENTRALE MARKENZEILE
   TECHNIK · PROZESSE · DIGITALISIERUNG

   Corporate-Design-Regel:
   TECHNIK          = Dunkelblau
   PROZESSE         = Grau
   DIGITALISIERUNG  = Royal-/Akzentblau
   ========================================================= */

.brand-subtitle .brand-tech {
    color: #092a5e !important;
}

.brand-subtitle .brand-processes {
    color: #8b95a3 !important;
}

.brand-subtitle .brand-digital {
    color: #064ed8 !important;
}

.brand-subtitle .brand-tech,
.brand-subtitle .brand-processes,
.brand-subtitle .brand-digital {
    font-weight: inherit;
}


/* CORPORATE BRAND COLORS 2026 END */



/* RESPONSIVE – Mobile Navigation zweizeilig */
@media (max-width: 600px) {
    .main-nav {
        flex-wrap: wrap;
        overflow-x: visible;
        column-gap: 18px;
        row-gap: 2px;
    }

    .main-nav a {
        padding-top: 8px;
        padding-bottom: 12px;
    }
}

/* RESPONSIVE – Mobile Navigation als stabiles 3-Spalten-Raster */
@media (max-width: 600px) {
    .main-nav {
        display: grid;
        grid-template-columns: repeat(3, max-content);
        justify-content: start;
        align-items: center;
        column-gap: 18px;
        row-gap: 2px;
        width: 100%;
        overflow: visible;
    }
}

/* Für Screenreader zugängliche, visuell ausgeblendete Inhalte */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Tastatur-Navigation: Sprung direkt zum Hauptinhalt */
.skip-link {
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 9999;

    padding: 10px 14px;

    color: var(--navy);
    background: var(--white);

    border: 2px solid var(--blue);
    border-radius: 4px;

    font-weight: 700;

    transform: translateY(-200%);
}

.skip-link:focus,
.skip-link:focus-visible {
    transform: translateY(0);
    outline: 2px solid var(--blue);
    outline-offset: 2px;
}


/* Barrierefreiheit: reduzierte Bewegung */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}