/* ─── Fonts (self-hosted, no external requests) ────────────────── */
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('../fonts/inter-v20-latin-regular.woff2') format('woff2');
}
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: url('../fonts/inter-v20-latin-600.woff2') format('woff2');
}
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 800;
    font-display: swap;
    src: url('../fonts/inter-v20-latin-800.woff2') format('woff2');
}

/* ─── Design tokens ──────────────────────────────────────────────
   Farbwerte aus dem Mockup-Screenshot abgeschätzt; bei Bedarf hier
   anpassen, sobald exakte Brand-Werte vorliegen.
──────────────────────────────────────────────────────────────── */
:root {
    color-scheme: light;

    --color-bg:          #f6f7fb;
    --color-fg:           #27035e;
    --color-fg-muted-rgb: 103, 96, 178;
    --color-fg-muted:     rgb(var(--color-fg-muted-rgb));

    --color-primary:      #6741b0;
    --color-primary-dark: #492e7d;
    --color-accent:       #7c3aed;

    --color-border:       #e6e8f0;
    --color-surface:      #f6f7fb;
    --color-card-bg:      #ffffff;

    --color-success-bg:   #ecfdf3;
    --color-success-fg:   #12742f;
    --color-success-bd:   #a6e9bd;
    --color-error-bg:     #fef2f2;
    --color-error-fg:     #b42318;
    --color-error-bd:     #f3a9a4;

    --radius-sm: 0.5rem;
    --radius-md: 0.875rem;
    --radius-lg: 1.5rem;
    --radius-pill: 999px;

    --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    --max-width: 1180px;

    --shadow-card: 0 1px 2px rgba(var(--color-fg-muted-rgb), 0.04), 0 3px 12px rgba(var(--color-fg-muted-rgb), 0.06);
}

/* ─── Reset & base ───────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    background: var(--color-bg);
    color: var(--color-fg);
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3 { font-weight: 800; line-height: 1.15; margin: 0 0 0.75rem; letter-spacing: -0.01em; }
p { margin: 0 0 1rem; color: var(--color-fg); }
a { color: inherit; }

.eyebrow {
    margin: 0 0 0.5rem;
    color: var(--color-accent);
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

/* ─── Skip link ──────────────────────────────────────────────── */
.skip-link {
    position: fixed;
    top: -3rem;
    left: 0.75rem;
    z-index: 100;
    background: var(--color-primary);
    color: #fff;
    padding: 0.6rem 1rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    text-decoration: none;
    transition: top 150ms ease;
}
.skip-link:focus {
    top: 0.75rem;
}

/* ─── Focus visibility ───────────────────────────────────────── */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* ─── Buttons ────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.35rem;
    border: none;
    border-radius: var(--radius-pill);
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    text-decoration: none;
    cursor: pointer;
    white-space: nowrap;
    transition: background-color 150ms ease, transform 150ms ease, box-shadow 150ms ease;
}
.btn__icon { width: 0.9rem; height: 0.9rem; flex-shrink: 0; }

.btn--primary {
    background: var(--color-accent);
    color: #fff;
    box-shadow: 0 6px 18px rgba(124, 58, 237, 0.28);
}
@media (prefers-reduced-motion: no-preference) {
    .btn--primary:hover { background: #6a2fd0; transform: translateY(-1px); }
}

.btn--on-banner {
    background: #ffffff;
    color: var(--color-primary-dark);
}
@media (prefers-reduced-motion: no-preference) {
    .btn--on-banner:hover { background: #eef2ff; }
}

.btn--on-footer {
    background: #ffffff;
    color: var(--color-primary-dark);
}
@media (prefers-reduced-motion: no-preference) {
    .btn--on-footer:hover { background: #eef2ff; }
}

/* ─── Top banner ─────────────────────────────────────────────── */
.top-banner {
    background: linear-gradient(90deg, #8d5bf0, #6f47bd);
    color: #fff;
}
.top-banner__inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0.75rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}
.top-banner__brand {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: 0.02em;
    color: #fff;
    text-decoration: none;
    width: 250px;
}

/* ─── Hero ───────────────────────────────────────────────────── */
.hero {
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(38% 42% at 85% 12%, rgba(45, 212, 191, 0.55), transparent 72%),
        radial-gradient(46% 48% at 68% 32%, rgba(76, 140, 255, 0.50), transparent 70%),
        radial-gradient(50% 52% at 48% 55%, rgba(124, 58, 237, 0.40), transparent 72%),
        radial-gradient(34% 36% at 14% 78%, rgba(76, 140, 255, 0.22), var(--color-surface) 70%),
        #ffffff;
}
.hero::before {
    /* Soft weiße Vignette, damit der Blob-Verlauf den Textkontrast nicht verschlechtert */
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(65% 60% at 30% 45%, rgba(255, 255, 255, 0.75), rgba(255, 255, 255, 0) 70%);
    pointer-events: none;
}
.hero__inner { position: relative; }
.hero__inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 3rem 1.25rem 4rem;
    display: grid;
    gap: 2.5rem;
    align-items: center;
}
.hero__logo {
    display: none;
    margin: 0 0 1rem;
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: 0.02em;
}
.hero__headline { font-size: clamp(1.9rem, 4vw, 2.75rem); max-width: 22ch; }
.hero__text { max-width: 46ch; font-size: 1.05rem; }
.hero__visual { justify-self: center; }

/* ─── Problem section ────────────────────────────────────────── */
.problem { padding: 3.5rem 1.25rem; background: var(--color-surface); }
.problem__inner {
    max-width: 36rem;
    margin: 0 auto;
}
.problem__inner h2 { font-size: clamp(1.5rem, 3vw, 2rem); }

/* ─── Infrastructure section ─────────────────────────────────── */
.infrastructure { padding: 3rem 1.25rem 3.5rem; background: var(--color-surface);  }
.infrastructure__inner { max-width: var(--max-width); margin: 0 auto; }
.infrastructure__inner h2 { font-size: clamp(1.5rem, 3vw, 2rem); }

.feature-grid,
.conversion-grid,
.feature-grid-ki {
    list-style: none;
    margin: 2rem 0 0;
    padding: 0;
    display: grid;
    gap: 1.25rem;
    grid-template-columns: 1fr;
}
.feature-grid-ki {
    max-width: 72rem;
    margin: 2rem auto;
}
.feature-card {
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-card);
    transition: box-shadow 200ms ease;
}
@media (prefers-reduced-motion: no-preference) {
    .feature-card:hover {
        box-shadow: var(--shadow-card), 0 0 24px rgba(var(--color-fg-muted-rgb), 0.25);
    }
}
.feature-card-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.feature-card__number {
    color: var(--color-accent);
    font-weight: 800;
    font-size: 1.8rem;
}
.feature-card h3 { font-size: 1.25rem; padding-top: 0.5rem; margin-bottom: 0.4rem; }
.feature-card p { margin: 0;  }

/* ─── Conversion section ─────────────────────────────────────── */
.conversion {
    background: var(--color-surface);
    padding: 3.5rem 1.25rem;
}
.conversion__inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    gap: 2.5rem;
    align-items: center;
}
.conversion__copy h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
.conversion__copy p { max-width: 46ch; }

.stat-grid {
    margin: 1.5rem 0 0;
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    max-width: 30rem;
}
.stat-card {
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    box-shadow: var(--shadow-card);
    transition: box-shadow 200ms ease;
}
@media (prefers-reduced-motion: no-preference) {
    .stat-card:hover {
        box-shadow: var(--shadow-card), 0 0 24px rgba(var(--color-fg-muted-rgb), 0.25);
    }
}
.stat-card__value {
    display: block;
    color: var(--color-accent);
    font-weight: 800;
    font-size: 1.5rem;
    margin-bottom: 0.35rem;
}
.stat-card__label { margin: 0; font-size: 0.85rem; }

.conversion__visual { justify-self: center; }

/* ─── Team section ───────────────────────────────────────────── */
.team { padding: 3rem 1.25rem 3.5rem; background: var(--color-surface); }
.team__inner { max-width: var(--max-width); margin: 0 auto; }
.team__inner h2 { font-size: clamp(1.5rem, 3vw, 2rem); }

.team-grid {
    list-style: none;
    margin: 2rem 0 0;
    padding: 0;
    display: grid;
    gap: 1.25rem;
    grid-template-columns: 1fr;
}
.team-card {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-card);
    transition: box-shadow 200ms ease;
}
@media (prefers-reduced-motion: no-preference) {
    .team-card:hover {
        box-shadow: var(--shadow-card), 0 0 24px rgba(var(--color-fg-muted-rgb), 0.25);
    }
}
.team-card__avatar {
    flex-shrink: 0;
    width: 5rem;
    height: 5rem;
}
.team-card__avatar img {
    border-radius: 50%;
}
.team-card__body h3 { font-size: 1.1rem; margin-bottom: 0.4rem; }
.team-card__role { color: var(--color-fg-muted); font-weight: 600; font-size: 0.9rem; }
.team-card__body p { margin: 0; }

@media (min-width: 768px) {
    .team-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .infrastructure__intro { max-width: 55%; }
    .problem__inner {
        text-align: center;
    }
}

/* ─── CTA block ──────────────────────────────────────────────── */
.cta-block { padding: 0 1.25rem 4rem;
    background: var(--color-surface); }
.cta-block__inner {
    max-width: var(--max-width);
    margin: 0 auto;
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    transition: box-shadow 200ms ease;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-items: flex-start;
}
.cta-block__copy h2 { font-size: clamp(1.35rem, 2.6vw, 1.75rem); }
.cta-block__copy p { max-width: 60ch; margin: 0; }
@media (prefers-reduced-motion: no-preference) {
    .cta-block__inner:hover {
        box-shadow: var(--shadow-card), 0 0 24px rgba(var(--color-fg-muted-rgb), 0.25);
    }
}

/* ─── Footer ─────────────────────────────────────────────────── */
.site-footer {
    color: #fff;
    background: var(--color-surface);
}
.site-footer__inner {
    background: linear-gradient(90deg, #8555e3, #6f47bd);
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2.5rem;
    border-top-left-radius: var(--radius-lg);
    border-top-right-radius: var(--radius-lg);
}
.site-footer__top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    padding-bottom: 2rem;
}
.site-footer__brand { font-size: 2.5rem; font-weight: 800; letter-spacing: 0.02em; }
.site-footer__bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    padding-top: 1.5rem;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.85);
}
.site-footer__bottom p { margin: 0; color: inherit; }
.site-footer__legal { display: flex; gap: 1.25rem; }
.site-footer__legal a { text-decoration: none; color: inherit; }
.site-footer__legal a:hover { text-decoration: underline; }

/* ─── Contact form / kontakt page ────────────────────────────── */
.contact-page { padding: 3rem 1.25rem 4rem; }
.contact-page__inner { max-width: 34rem; margin: 0 auto; }
.contact-page__inner h1 { font-size: clamp(1.6rem, 3.2vw, 2.1rem); }
.contact-page__intro { margin-bottom: 2rem; }

.contact-form { display: grid; gap: 1.25rem; }
.contact-form__row { display: grid; gap: 0.4rem; }
.contact-form__row label { font-weight: 600; font-size: 0.9rem; }
.contact-form__optional { font-weight: 400; color: var(--color-fg-muted); }

.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form textarea {
    font: inherit;
    padding: 0.65rem 0.85rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: #fff;
    color: var(--color-fg);
    width: 100%;
    resize: vertical;
}
.contact-form input:focus-visible,
.contact-form textarea:focus-visible {
    border-color: var(--color-primary);
}

.contact-form__honeypot {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

.contact-form .btn { justify-self: start; }

.alert {
    padding: 1rem 1.1rem;
    border-radius: var(--radius-md);
    border: 1px solid;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}
.alert p { margin: 0.15rem 0; color: inherit; }
.alert--success {
    background: var(--color-success-bg);
    border-color: var(--color-success-bd);
    color: var(--color-success-fg);
}
.alert--error {
    background: var(--color-error-bg);
    border-color: var(--color-error-bd);
    color: var(--color-error-fg);
}

/* ─── Legal / 404 pages ──────────────────────────────────────── */
.legal-page { padding: 3.5rem 1.25rem 4.5rem; }
.legal-page__inner { max-width: 34rem; margin: 0 auto; }
.legal-page__inner h1 { font-size: clamp(1.6rem, 3.2vw, 2.1rem); }
.legal-page__back { display: inline-block; margin-top: 0.5rem; color: var(--color-primary); font-weight: 600; }

/* ─── Responsive: tablet / desktop ───────────────────────────── */
@media (max-width: 640px) {
    /* Auf Smartphones übernimmt das größere Hero-Logo die Markenkennung,
       das Banner bleibt schlank und zeigt nur Hinweis + CTA. */
    .top-banner__brand { display: none; }
    .hero__logo { display: block; }
}

@media (min-width: 768px) {
    .hero__inner { grid-template-columns: 1.1fr 0.9fr; padding-top: 4.5rem; padding-bottom: 5.5rem; }
    .hero__visual { justify-self: end; }

    .feature-grid,
    .feature-grid-ki { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .conversion-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

    .conversion__inner { grid-template-columns: 1fr 1fr; }
    .conversion__visual { justify-self: end; }

    .cta-block__inner { flex-direction: row; align-items: center; justify-content: space-between; }
    .cta-block__copy p { margin: 0; }
}

/* ─── Reduced motion ─────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    * { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}