:root {
    --primary: #1a73e8;
    --primary-dark: #0d47a1;
    --secondary: #34a853;
    --accent: #f25c54;
    --light: #f8f9fa;
    --dark: #202124;
    --gray: #5f6368;
    --light-gray: #dadce0;
    --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', 'Roboto', sans-serif;
}

body {
    background: linear-gradient(135deg, #0c50b7 0%, #13cdbe 100%);
    color: var(--dark);
    line-height: 1.6;
    min-height: 100vh;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
}

.brand-header {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px;
    /*background: white;*/
    border-radius: 16px;
    /*box-shadow: var(--card-shadow);*/
}

.brand-name {
    color: #ffffff;
    font-size: 52px;
    font-weight: 700;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
    line-height: 50px;
}

.brand-tagline {
    color: #b7cde9;
    font-size: 26px;
    font-weight: 500;
}

.question-card {
    background: #b9e3e3;
    border-radius: 16px;
    padding: 30px;
    margin-bottom: 20px;
    box-shadow: var(--card-shadow);
    position: relative;
    overflow: hidden;
}

.question-number {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 14px;
    color: var(--gray);
    font-weight: 500;
}

.question-text {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 25px;
    color: #00acca;
    line-height: 1.4;
}

.options-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.option {
    display: flex;
    align-items: center;
    padding: 16px 20px;
    background: var(--light);
    border-radius: 12px;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.option:hover {
    background: #e8f0fe;
    transform: translateY(-2px);
}

.option.selected {
    background: #e8f0fe;
    border-color: var(--primary);
    box-shadow: 0 4px 8px rgba(26, 115, 232, 0.15);
}

.option-text {
    font-size: 16px;
    font-weight: 500;
    color: #868a97;
}

.text-input {
    width: 100%;
    padding: 16px;
    border: 2px solid var(--light-gray);
    border-radius: 12px;
    font-size: 16px;
    margin-top: 10px;
    transition: var(--transition);
}

.text-input:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 2px rgba(26, 115, 232, 0.2);
}

.btn-container {
    display: flex;
    justify-content: space-between;
    margin-top: 30px;
}

button {
    padding: 14px 28px;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
    font-size: 16px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-prev {
    background: white;
    color: #00acca;
    border: 2px solid #00acaa;
}

.btn-prev:hover {
    background: #f1f3f4;
    border-color: var(--primary);
}

.btn-next {
    background: #00acaa;
    color: white;
    box-shadow: 0 4px 8px rgba(26, 115, 232, 0.3);
}

.btn-next:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(26, 115, 232, 0.4);
}

.btn-submit {
    background: var(--secondary);
    color: white;
    box-shadow: 0 4px 8px rgba(52, 168, 83, 0.3);
}

.btn-submit:hover {
    background: #2c8e47;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(52, 168, 83, 0.4);
}

.hidden {
    display: none;
}

.progress-container {
    margin: 30px 0;
    background: #b9e3e3;
    border-radius: 10px;
    height: 8px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 10px;
    transition: width 0.5s ease;
}

.progress-text {
    text-align: center;
    font-size: 14px;
    color: #b7cde9;
    margin-bottom: 5px;
}

.required {
    color: var(--accent);
}

.checkbox-container {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.checkbox-option {
    flex: 1 0 45%;
    min-width: 0;
}

.warning-banner {
    background: #fce8e6;
    color: #c5221f;
    padding: 15px;
    border-radius: 8px;
    margin: 15px 0;
    border-left: 4px solid #ea4335;
    font-weight: 500;
}

@media (max-width: 600px) {
    body {
        padding: 10px;
    }
    
    .question-card {
        padding: 20px;
    }
    
    .question-text {
        font-size: 18px;
    }
    
    .option {
        padding: 14px;
    }
    
    .checkbox-container {
        flex-direction: column;
    }
    
    .checkbox-option {
        flex: 1;
    }
    
    button {
        padding: 12px 20px;
        font-size: 14px;
    }
}