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

:root {
    --primary-blue: #049DD9;
    --secondary-blue: #04B2D9;
    --light-blue: #CEE8F2;
    --gray: #8B8C8C;
    --dark: #0D0D0D;
    --white: #FFFFFF;
    --shadow: 0 8px 24px rgba(13, 13, 13, 0.1);
    --border-radius: 16px;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background: linear-gradient(135deg, var(--white) 0%, var(--light-blue) 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Landing Container */
.landing-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 2rem;
    position: relative;
}

/* Header */
.landing-header {
    text-align: center;
    padding: 1rem 0;
}

.logo-text {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-blue);
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* Hauptinhalt */
.landing-main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    z-index: 2;
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 1.5rem;
    line-height: 1.2;
    animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--gray);
    font-weight: 400;
    margin-bottom: 3rem;
    animation: fadeInUp 1s ease-out 0.2s both;
}

/* Hintergrund-Elemente */
.background-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    overflow: hidden;
}

.circle {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.circle-1 {
    width: 200px;
    height: 200px;
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.circle-2 {
    width: 150px;
    height: 150px;
    top: 60%;
    right: 15%;
    animation-delay: 2s;
}

.circle-3 {
    width: 100px;
    height: 100px;
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

/* Footer mit CTA-Button */
.landing-footer {
    text-align: center;
    padding: 2rem 0;
    position: relative;
    z-index: 2;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    background: var(--primary-blue);
    color: var(--white);
    text-decoration: none;
    padding: 1.2rem 2.5rem;
    border-radius: var(--border-radius);
    font-size: 1.2rem;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
    animation: fadeInUp 1s ease-out 0.4s both;
}

.cta-button:hover {
    background: var(--secondary-blue);
    transform: translateY(-3px);
    box-shadow: 0 12px 24px rgba(4, 157, 217, 0.3);
    gap: 1.5rem;
}

.button-text {
    letter-spacing: 0.5px;
}

.button-arrow {
    font-size: 1.4rem;
    transition: transform 0.3s ease;
}

.cta-button:hover .button-arrow {
    transform: translateX(5px);
}

/* Animationen */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
    }
}

/* Responsive Design */
@media screen and (max-width: 768px) {
    .landing-container {
        padding: 1.5rem;
    }
    
    .logo-text {
        font-size: 1.5rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .cta-button {
        padding: 1rem 2rem;
        font-size: 1.1rem;
    }
    
    .circle-1 {
        width: 150px;
        height: 150px;
    }
    
    .circle-2 {
        width: 120px;
        height: 120px;
    }
    
    .circle-3 {
        width: 80px;
        height: 80px;
    }
}

@media screen and (max-width: 480px) {
    .landing-container {
        padding: 1rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 2rem;
    }
    
    .cta-button {
        width: 100%;
        justify-content: center;
        padding: 1rem 1.5rem;
    }
}

/* Barrierefreiheit */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}

/* Fokus-Stile für Tastaturnavigation */
.cta-button:focus {
    outline: 3px solid var(--secondary-blue);
    outline-offset: 2px;
}

/* Hoher Kontrast Modus */
@media (prefers-contrast: high) {
    :root {
        --gray: #000000;
        --shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
    }
    
    .cta-button {
        border: 2px solid var(--dark);
    }
}