:root {
    --grau: #2b2d31;
    --grau-hell: #3a3d42;
    --rot: #d81f2a;
    --rot-dunkel: #b0161f;
    --text: #1f2023;
    --bg: #f4f4f5;
    --weiss: #ffffff;
}

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

body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
}

.container {
    width: min(1100px, 92%);
    margin-inline: auto;
}

/* Header */
.header {
    background: var(--grau);
    position: sticky;
    top: 0;
    z-index: 10;
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.logo {
    color: var(--weiss);
    font-weight: 800;
    font-size: 1.4rem;
    letter-spacing: 0.5px;
    text-decoration: none;
}

.logo span {
    color: var(--rot);
}

.nav {
    display: flex;
    gap: 1.5rem;
}

.nav a {
    color: var(--weiss);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.nav a:hover {
    color: var(--rot);
}

/* Hero */
.hero {
    background: linear-gradient(135deg, var(--grau) 0%, var(--grau-hell) 100%);
    color: var(--weiss);
    text-align: center;
    padding: 5rem 0;
    border-bottom: 5px solid var(--rot);
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.2rem);
    margin-bottom: 1rem;
}

.hero h1 span {
    color: var(--rot);
}

.hero p {
    font-size: 1.15rem;
    opacity: 0.9;
    margin-bottom: 2rem;
}

.btn {
    display: inline-block;
    background: var(--rot);
    color: var(--weiss);
    padding: 0.8rem 2rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    transition: background 0.2s;
}

.btn:hover {
    background: var(--rot-dunkel);
}

/* Sections */
.section {
    padding: 3.5rem 0;
    border-bottom: 1px solid #e2e2e5;
}

.section h2 {
    font-size: 1.8rem;
    color: var(--grau);
    margin-bottom: 1rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.section h2::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 50px;
    height: 3px;
    background: var(--rot);
}

/* Downloads */
.downloads {
    list-style: none;
    margin-top: 1rem;
}

.downloads li {
    margin-bottom: 0.6rem;
}

.downloads a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    background: var(--weiss);
    padding: 0.9rem 1.2rem;
    border-radius: 6px;
    border-left: 4px solid var(--rot);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
    text-decoration: none;
    color: var(--text);
    transition: background 0.2s;
}

.downloads a:hover {
    background: #fbeaea;
}

.datei {
    font-weight: 600;
}

.dl {
    color: var(--weiss);
    background: var(--rot);
    padding: 0.35rem 0.9rem;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
}

.hinweis {
    margin-top: 1rem;
    font-size: 0.9rem;
    color: #666;
}

.hinweis code {
    background: #e5e5e8;
    padding: 0.1rem 0.4rem;
    border-radius: 3px;
}

/* Links */
a[href^="mailto"] {
    color: var(--rot);
}

/* Footer */
.footer {
    background: var(--grau);
    color: var(--weiss);
    text-align: center;
    padding: 1.5rem 0;
    font-size: 0.9rem;
}

@media (max-width: 600px) {
    .header__inner {
        flex-direction: column;
        gap: 0.8rem;
    }

    .nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }
}