:root {
    --bg-color: #0d1117;
    --card-bg: rgba(22, 27, 34, 0.85);
    --border-color: #30363d;
    --accent-blue: #2f81f7;
    --accent-blue-hover: #58a6ff;
    --text-main: #c9d1d9;
    --text-heading: #f0f6fc;
    --text-muted: #8b949e;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    padding: 2rem 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* Canvas Hintergrund */
#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    pointer-events: none;
}

.container {
    max-width: 950px;
    width: 100%;
    z-index: 1;
}

header {
    border-bottom: 2px solid var(--accent-blue);
    padding-bottom: 1.5rem;
    margin-bottom: 2.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    background: rgba(13, 17, 23, 0.7);
    backdrop-filter: blur(8px);
    padding: 1rem;
    border-radius: 8px;
}

.logo {
    color: var(--text-heading);
    font-size: 1.6rem;
    font-weight: bold;
    letter-spacing: 0.5px;
}

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

/* Titel Animation */
.logo .tagline {
    font-size: 0.95rem;
    font-weight: normal;
    display: inline-block;
    color: var(--accent-blue-hover);
    animation: pulseGlow 3s infinite ease-in-out;
}

@keyframes pulseGlow {
    0%, 100% {
        text-shadow: 0 0 2px var(--accent-blue), 0 0 5px var(--accent-blue);
        opacity: 0.8;
    }
    50% {
        text-shadow: 0 0 10px var(--accent-blue-hover), 0 0 20px var(--accent-blue);
        opacity: 1;
    }
}

nav a {
    color: var(--text-muted);
    text-decoration: none;
    margin-left: 1.2rem;
    font-size: 0.95rem;
    transition: color 0.2s;
    cursor: pointer;
}

nav a:hover {
    color: var(--accent-blue-hover);
}

.hero {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2.5rem 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    text-align: center;
}

.hero h1 {
    color: var(--text-heading);
    font-size: 2.2rem;
    margin-bottom: 1rem;
}

.hero p {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto 1.5rem auto;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(8px);
    transition: transform 0.2s, border-color 0.2s;
}

.card:hover {
    transform: translateY(-3px);
    border-color: var(--accent-blue);
}

.card h3 {
    color: var(--accent-blue-hover);
    font-size: 1.2rem;
    margin-bottom: 0.8rem;
    border-left: 3px solid var(--accent-blue);
    padding-left: 0.5rem;
}

.card p {
    font-size: 0.95rem;
    color: var(--text-main);
}

.btn {
    display: inline-block;
    background: var(--accent-blue);
    color: #fff;
    padding: 0.7rem 1.4rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: bold;
    transition: background 0.2s;
    cursor: pointer;
    border: none;
}

.btn:hover {
    background: var(--accent-blue-hover);
    text-decoration: none;
}

footer {
    margin-top: auto;
    padding-top: 2rem;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    width: 100%;
    border-top: 1px solid var(--border-color);
    background: rgba(13, 17, 23, 0.8);
    backdrop-filter: blur(8px);
    padding-bottom: 1rem;
}

footer a {
    color: var(--accent-blue);
    text-decoration: none;
    cursor: pointer;
}

footer a:hover {
    text-decoration: underline;
}

/* Modal / Popup */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(6px);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    padding: 1rem;
}

.modal-content {
    background: #161b22;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    max-width: 800px;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    padding: 2rem;
    position: relative;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.8);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
    margin-bottom: 1.5rem;
}

.modal-header h2 {
    color: var(--text-heading);
    font-size: 1.5rem;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.8rem;
    cursor: pointer;
    line-height: 1;
}

.close-btn:hover {
    color: var(--accent-blue-hover);
}

.modal-body h3 {
    color: var(--accent-blue-hover);
    font-size: 1.1rem;
    margin-top: 1.2rem;
    margin-bottom: 0.5rem;
}

.modal-body p, .modal-body address {
    font-style: normal;
    font-size: 0.95rem;
    margin-bottom: 0.8rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.3rem;
    color: var(--text-heading);
    font-size: 0.85rem;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 0.6rem;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-main);
    font-size: 0.95rem;
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--accent-blue);
}

.captcha-container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.captcha-container input {
    max-width: 100px;
}