body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f8f8f8;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    transition: background 0.3s ease-in-out;
}
.container {
    width: 90%;
    max-width: 500px;
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    text-align: center;
    box-sizing: border-box;
    margin: 0 auto;
}
h1 {
    font-size: 22px;
    color: #333;
}
h2 {
    font-size: 18px;
    color: #444;
}
#survey-form {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    padding: 0;
    box-sizing: border-box;
}
.option {
    display: block;
    width: 100%;
    padding: 12px;
    margin: 10px auto;
    margin-left: auto;
    margin-right: auto;
    background: #002855;
    color: white;
    border: none;
    cursor: pointer;
    text-align: center;
    font-size: 16px;
    border-radius: 5px;
    transition: all 0.3s ease-in-out;
    box-sizing: border-box;
    max-width: 100%;
    left: 0;
    right: 0;
}
.option:hover {
    background: #003b7a;
    transform: scale(1.03);
}
.option:active {
    transform: scale(0.97);
}
.progress-bar {
    width: 100%;
    display: flex;
    justify-content: space-between;
    margin: 15px 0;
}
.progress-step {
    flex: 1;
    height: 10px;
    margin: 0 2px;
    background-color: #ddd;
    border-radius: 5px;
}
.progress-step.active {
    background: #002855;
}
.logo {
    display: block;
    margin: 0 auto 15px;
    max-width: 150px;
}
.logo-container {
    background-color: #002855;
    padding: 15px;
    margin: -20px -20px 20px;
    border-radius: 10px 10px 0 0;
    text-align: center;
}
.reward-btn {
    display: block;
    width: 100%;
    padding: 15px;
    background: #002855;
    color: white;
    border: none;
    cursor: pointer;
    font-size: 18px;
    border-radius: 5px;
    margin-top: 20px;
    margin-left: auto;
    margin-right: auto;
    font-weight: bold;
    transition: all 0.3s ease-in-out;
}
.reward-btn:hover {
    background: #003b7a;
    transform: scale(1.05);
}
.reward-btn:active {
    transform: scale(0.95);
}
.accordion-content {
    display: none;
    text-align: left;
    margin-top: 15px;
    background: #f7f7f7;
    border-radius: 8px;
    padding: 16px;
}
.form-group {
    margin-bottom: 24px;
}
.form-label {
    display: block;
    color: #555;
    font-size: 14px;
    margin-bottom: 8px;
}
.form-control {
    width: 100%;
    padding: 12px;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    box-sizing: border-box;
    font-size: 16px;
    background-color: white;
}
.form-row {
    display: flex;
    gap: 12px;
}
.form-column {
    flex: 1;
}
::placeholder {
    color: #cccccc;
    font-size: 16px;
}
.centered-text {
    text-align: center;
    line-height: 1.2;
    margin-top: 24px;
    color: #555;
}
.centered-text p {
    margin: 5px 0;
}

/* Медиа-запросы для адаптивного дизайна */
@media (max-width: 768px) {
    .container {
        width: 95%;
        padding: 15px;
    }
    
    h1 {
        font-size: 20px;
    }
    
    h2 {
        font-size: 16px;
    }
    
    .option {
        padding: 10px;
        font-size: 14px;
        margin: 8px auto;
        margin-left: auto;
        margin-right: auto;
    }
    
    .logo {
        max-width: 120px;
    }
    
    .progress-step {
        height: 8px;
    }
    
    .reward-btn {
        padding: 12px;
        font-size: 16px;
    }
    
    .form-control {
        padding: 10px;
        font-size: 14px;
    }
    
    .form-label {
        font-size: 12px;
    }
    
    .form-row {
        flex-direction: column;
        gap: 8px;
    }
    
    .centered-text {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .container {
        width: 100%;
        border-radius: 0;
        box-shadow: none;
        padding: 12px;
    }
    
    body {
        height: auto;
        min-height: 100vh;
    }
    
    h1 {
        font-size: 18px;
    }
    
    h2 {
        font-size: 15px;
    }
    
    .logo-container {
        margin: -12px -12px 15px;
        padding: 10px;
    }
    
    .logo {
        max-width: 100px;
    }
    
    .option {
        padding: 8px;
        font-size: 13px;
        margin: 6px auto;
        margin-left: auto;
        margin-right: auto;
    }
    
    .progress-step {
        height: 6px;
        margin: 0 1px;
    }
    
    .reward-btn {
        padding: 10px;
        font-size: 14px;
    }
}