/* Basis */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: #1f2933;
    background-color: #f5f7fb;
    line-height: 1.5;
}

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

.container {
    width: 90%;
    max-width: 1080px;
    margin: 0 auto;
}

/* Header / Navigation */
.site-header {
    background: #0f172a;
    color: #ffffff;
    padding: 0.75rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logo: Text, die Farben kommen über ::first-letter */
.logo-title {
    display: flex;
    align-items: baseline;
    gap: 0.25rem;
    font-weight: 800;
    font-size: 1.25rem;
}

/* Standardfarbe -> wird normal vom Eltern-Element vererbt (weiß im Header, dunkel im Inhalt) */
.logo-safe,
.logo-instinkt,
.app-word {
    font-weight: 800;
}

/* Nur die Anfangsbuchstaben einfärben */
.logo-safe::first-letter {
    color: #22c55e; /* S grün */
}

.logo-instinkt::first-letter {
    color: #ef4444; /* I rot */
}

.app-word::first-letter {
    color: #facc15; /* D/F gelb */
}

.main-nav a {
    margin-left: 1rem;
    font-size: 0.95rem;
    opacity: 0.9;
}

.main-nav a:hover {
    opacity: 1;
}

/* Hero */
.hero {
    padding: 4rem 0 3rem;
    background: radial-gradient(circle at top left, #dbeafe 0%, #e5f9f4 40%, #e5edff 100%);
    color: #0f172a;
}

.hero-content {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    align-items: stretch;
}

.hero-text {
    flex: 2;
    min-width: 260px;
}

/* Schriftzug im Hero */
.hero-title {
    font-size: 2.1rem;
    margin-bottom: 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    align-items: baseline;
}

.hero-subline {
    flex-basis: 100%;
    font-size: 1rem;
    font-weight: 500;
    color: #4b5563;
    margin-top: 0.25rem;
}

.hero-text p {
    font-size: 1rem;
    max-width: 600px;
    color: #111827;
}

.hero-buttons {
    margin-top: 1.5rem;
    display: flex;
    gap: 0.75rem;
}

/* Hero-Box + Logo */
.hero-box {
    flex: 1;
    min-width: 240px;
    background: #f9fafb;
    border-radius: 0.75rem;
    padding: 1.25rem 1.5rem 1.5rem;
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.15);
}

.hero-logo {
    display: block;
    max-width: 120px;
    width: 60%;
    margin: 0 auto 0.9rem;
}

.hero-box h2 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
    text-align: center;
}

.hero-box ul {
    list-style: disc;
    margin-left: 1.1rem;
    font-size: 0.95rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.6rem 1.3rem;
    border-radius: 999px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
}

.btn-primary {
    background-color: #2563eb;
    color: #ffffff;
}

.btn-primary:hover {
    background-color: #1d4ed8;
}

.btn-secondary {
    background-color: transparent;
    color: #0f172a;
    border-color: #0f172a;
}

.btn-secondary:hover {
    background-color: rgba(15, 23, 42, 0.06);
}

/* Sections */
.section {
    padding: 3rem 0;
}

.section-alt {
    background-color: #e5edff;
}

.section h2 {
    font-size: 1.6rem;
    margin-bottom: 1rem;
}

.section p {
    margin-bottom: 0.75rem;
}

/* Layouts */
.two-column {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    align-items: flex-start;
}

.two-column > div {
    flex: 1;
    min-width: 260px;
}

/* Box / Cards */
.box {
    background-color: #ffffff;
    border-radius: 0.75rem;
    padding: 1.25rem 1.5rem;
    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.08);
}

.box h3 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
}

.feature-list {
    list-style: disc;
    margin-left: 1.1rem;
    margin-bottom: 0.75rem;
}

.feature-list li {
    margin-bottom: 0.25rem;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.card {
    background-color: #ffffff;
    border-radius: 0.75rem;
    padding: 1.25rem 1.5rem;
    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.08);
}

.card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

/* Kontakt / Hinweise */
.contact-box {
    background-color: #ffffff;
    border-radius: 0.75rem;
    padding: 0.75rem 1rem;
    display: inline-block;
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.08);
    margin-bottom: 0.75rem;
}

.contact-box a {
    font-weight: 600;
}

.hint {
    font-size: 0.9rem;
    color: #4b5563;
}

/* Footer */
.site-footer {
    background-color: #0f172a;
    color: #e5e7eb;
    padding: 1rem 0;
    margin-top: 1rem;
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.85rem;
}

.footer-links a {
    margin-left: 1rem;
    opacity: 0.9;
}

.footer-links a:hover {
    opacity: 1;
}

/* Responsive */
@media (max-width: 720px) {
    /* Navigation ausblenden (später optional Burger-Menü) */
    .main-nav {
        display: none;
    }

    /* Container breiter und mit Randabstand */
    .container {
        width: 100%;
        max-width: 100%;
        padding: 0 1rem;
    }

    /* Header kompakter & zentriert */
    .site-header {
        padding: 0.75rem 1rem;
        text-align: center;
    }

    .header-content {
        justify-content: center;
    }

    .logo-title {
        font-size: 1.4rem;
    }

    /* Hero-Bereich enger, Titel kleiner */
    .hero {
        padding: 2.5rem 0 2rem;
    }

    .hero-content {
        flex-direction: column;
    }

    .hero-title {
        font-size: 1.7rem;
        flex-direction: column;
        align-items: flex-start;
    }

    .hero-subline {
        margin-top: 0.5rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .hero-box {
        margin-top: 0.75rem;
    }

    /* Zweispaltige Layouts untereinander */
    .two-column {
        flex-direction: column;
    }

    /* Karten: eine Spalte */
    .cards {
        grid-template-columns: 1fr;
    }

    /* Footer untereinander */
    .footer-content {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }

    .footer-links a {
        margin-left: 0;
        margin: 0.25rem 0;
        display: inline-block;
    }
}