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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    overflow-x: hidden;
    background: #0a0e27;
    color: #fff;
}

#backgroundCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    background: linear-gradient(135deg, #0a0e27 0%, #1a1f3a 100%);
}

.container {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 2rem;
}

header {
    text-align: center;
    padding: 4rem 0 2rem;
    animation: fadeInDown 1s ease-out;
}

h1 {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.tagline {
    font-size: clamp(1rem, 2.5vw, 1.5rem);
    color: #a0aec0;
    font-weight: 300;
}

main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.content {
    text-align: center;
    max-width: 800px;
    animation: fadeInUp 1s ease-out 0.3s backwards;
}

.content h2 {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: 1.5rem;
    color: #fff;
}

.content p {
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    color: #cbd5e0;
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    color: #fff;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50px;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.4);
}

.language-toggle {
    position: fixed;
    top: 2rem;
    right: 2rem;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    animation: fadeIn 1s ease-out 0.9s backwards;
}

.language-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1) rotate(10deg);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.language-toggle:active {
    transform: scale(0.95);
}

.language-toggle .lang-text {
    font-size: 0.9rem;
    font-weight: 700;
    color: #fff;
    user-select: none;
    letter-spacing: 0.5px;
}

footer {
    text-align: center;
    padding: 2rem 0;
    color: #718096;
    font-size: 0.9rem;
    animation: fadeIn 1s ease-out 0.6s backwards;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    header {
        padding: 2rem 0 1rem;
    }

    .language-toggle {
        top: 1rem;
        right: 1rem;
        width: 50px;
        height: 50px;
    }

    .language-toggle .lang-text {
        font-size: 0.75rem;
    }

    .content p {
        margin-bottom: 1.5rem;
    }

    footer {
        padding: 1rem 0;
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2.5rem;
        margin-bottom: 0.5rem;
    }

    .tagline {
        font-size: 0.9rem;
    }

    .content h2 {
        font-size: 1.5rem;
        margin-bottom: 1rem;
    }

    .content p {
        font-size: 1rem;
        margin-bottom: 1rem;
    }

    .language-toggle {
        width: 45px;
        height: 45px;
        top: 0.75rem;
        right: 0.75rem;
    }

    .language-toggle .lang-text {
        font-size: 0.7rem;
    }
}

@media (min-width: 1440px) {
    .container {
        max-width: 1400px;
        margin: 0 auto;
    }

    .content {
        max-width: 900px;
    }
}