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

html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
}

body {
    font-family: 'Arial', sans-serif;
    background: url('./img/10.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    min-height: 100vh;
    color: white;
    overflow-x: hidden;
    margin: 0;
    padding: 0;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.3) 0%, rgba(0, 0, 0, 0.1) 20%, transparent 40%);
    pointer-events: none;
    z-index: 1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 2;
}

/* Header */
.header {
    position: relative;
    padding: 20px 0;
    text-align: center;
}

.avatar {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    border: 4px solid white;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    margin: 0 auto 20px;
    display: block;
}

.language-switcher {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    gap: 10px;
}

.lang-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid white;
    color: white;
    padding: 8px 16px;
    border-radius: 25px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
    text-decoration: none;
}

.lang-btn:hover, .lang-btn.active {
    background: white;
    color: #ff0050;
}

/* Main Content */
.main-content {
    text-align: center;
    padding: 40px 0;
}

.title {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    line-height: 1.2;
}

.subtitle {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.9;
    line-height: 1.4;
}

.content-image {
    width: 100%;
    max-width: 600px;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    margin: 40px auto;
    display: block;
}

.content-text {
    max-width: 800px;
    margin: 0 auto 40px;
    font-size: 1.1rem;
    line-height: 1.6;
    text-align: left;
    background: rgba(255, 255, 255, 0.1);
    padding: 30px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
}


/* Fixed Download Button */
.download-btn {
    position: fixed;
    bottom: 15px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 1;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.download-btn img {
    width: 350px;
    height: auto;
    border-radius: 30px;
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.5);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: block;
    border: 3px solid rgba(255, 255, 255, 0.2);
    margin: 0 auto;
}

.download-btn-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: black;
    font-weight: bold;
    font-size: 1.1rem;
    text-shadow: 1px 1px 2px rgba(255, 255, 255, 0.8);
    pointer-events: none;
    z-index: 10;
    letter-spacing: 0.5px;
    white-space: nowrap;
    text-align: center;
}

.download-btn img:hover {
    transform: scale(1.08);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.6);
}


/* Sticky Block */
.sticky-block {
    background: transparent;
    text-align: center;
    border-radius: 15px;
    position: relative;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Footer */
.footer {
    background: rgba(0, 0, 0, 0.3);
    padding: 30px 0;
    text-align: center;
    margin-top: 60px;
    backdrop-filter: blur(10px);
}

.footer-text {
    font-size: 0.9rem;
    opacity: 0.8;
    line-height: 1.5;
}

/* Responsive Design */
@media (max-width: 768px) {
    .title {
        font-size: 2rem;
        margin-bottom: 15px;
    }
    
    .subtitle {
        font-size: 1rem;
        margin-bottom: 30px;
    }
    
    .avatar {
        width: 140px;
        height: 140px;
        margin-bottom: 15px;
    }
    
    .language-switcher {
        position: static;
        justify-content: center;
        margin-bottom: 20px;
    }
    
    .download-btn {
        bottom: 20px;
    }
    
    .download-btn img {
        width: 300px;
        border-radius: 25px;
    }
    
    .download-btn-text {
        font-size: 1rem;
        letter-spacing: 0.3px;
        white-space: nowrap;
    }
    
    .content-text {
        font-size: 1rem;
        padding: 20px;
        margin-bottom: 30px;
    }
    
    .main-content {
        padding: 30px 0;
    }
}

@media (max-width: 480px) {
    .title {
        font-size: 1.5rem;
        margin-bottom: 10px;
    }
    
    .subtitle {
        font-size: 0.9rem;
        margin-bottom: 25px;
    }
    
    .avatar {
        width: 120px;
        height: 120px;
        margin-bottom: 10px;
    }
    
    .download-btn {
        bottom: 15px;
    }
    
    .download-btn img {
        width: 250px;
        border-radius: 20px;
    }
    
    .download-btn-text {
        font-size: 0.9rem;
        letter-spacing: 0.2px;
        white-space: nowrap;
    }
    
    .content-text {
        font-size: 0.9rem;
        padding: 15px;
        margin-bottom: 25px;
    }
    
    .main-content {
        padding: 20px 0;
    }
}