/* Reset e Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Paleta de cores sóbrias - roxo e cinza */
    --primary-purple: #6366f1;
    --primary-purple-dark: #4f46e5;
    --primary-purple-light: #818cf8;
    --secondary-purple: #8b5cf6;
    --accent-purple: #a855f7;
    
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    --white: #ffffff;
    --success: #10b981;
    --warning: #f59e0b;
    
    /* Tipografia */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Espaçamentos */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Bordas e sombras */
    --border-radius-sm: 0.375rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

/* Importar fonte Inter do Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--gray-800);
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 100%);
    min-height: 100vh;
    padding: var(--spacing-lg);
}

/* Container principal */
.survey-container {
    max-width: 800px;
    margin: 0 auto;
    background: var(--white);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    position: relative;
}

/* Header com gradiente */
.survey-header {
    background: linear-gradient(135deg, var(--primary-purple) 0%, var(--secondary-purple) 100%);
    color: var(--white);
    padding: var(--spacing-3xl) var(--spacing-xl) var(--spacing-2xl);
    text-align: center;
    position: relative;
}

.survey-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.survey-title {
    font-size: 2.25rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.survey-subtitle {
    font-size: 1.125rem;
    font-weight: var(--font-weight-normal);
    opacity: 0.9;
    position: relative;
    z-index: 1;
    max-width: 600px;
    margin: 0 auto;
}

/* Formulário */
.survey-form {
    padding: var(--spacing-2xl);
}

/* Blocos de perguntas */
.question-block {
    margin-bottom: var(--spacing-3xl);
    padding: var(--spacing-xl);
    background: var(--gray-50);
    border-radius: var(--border-radius-lg);
    border-left: 4px solid var(--primary-purple);
    transition: all 0.3s ease;
}

.question-block:hover {
    background: var(--white);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.block-title {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    color: var(--primary-purple);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.block-number {
    background: var(--primary-purple);
    color: var(--white);
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: var(--font-weight-semibold);
}

/* Perguntas individuais */
.question {
    margin-bottom: var(--spacing-xl);
}

.question:last-child {
    margin-bottom: 0;
}

.question-label {
    display: block;
    font-size: 1rem;
    font-weight: var(--font-weight-medium);
    color: var(--gray-700);
    margin-bottom: var(--spacing-md);
    line-height: 1.5;
}

/* Inputs de texto */
.text-input {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    font-family: var(--font-primary);
    transition: all 0.3s ease;
    background: var(--white);
}

.text-input:focus {
    outline: none;
    border-color: var(--primary-purple);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Select customizado */
.select-input {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    font-family: var(--font-primary);
    background: var(--white);
    cursor: pointer;
    transition: all 0.3s ease;
}

.select-input:focus {
    outline: none;
    border-color: var(--primary-purple);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Checkboxes e Radio buttons customizados */
.checkbox-group,
.radio-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.checkbox-item,
.radio-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    transition: all 0.3s ease;
    cursor: pointer;
    border: 2px solid transparent;
}

.checkbox-item:hover,
.radio-item:hover {
    background: var(--gray-100);
    border-color: var(--primary-purple-light);
}

.checkbox-item input,
.radio-item input {
    width: 1.25rem;
    height: 1.25rem;
    margin: 0;
    cursor: pointer;
    accent-color: var(--primary-purple);
}

.checkbox-item label,
.radio-item label {
    flex: 1;
    cursor: pointer;
    font-size: 0.95rem;
    line-height: 1.4;
    color: var(--gray-700);
}

/* Campo condicional de email */
.conditional-field {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--primary-purple-light);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border-radius: var(--border-radius-md);
    border: 1px solid rgba(99, 102, 241, 0.2);
    display: none;
    animation: slideDown 0.3s ease;
}

/* Seção de consentimento */
.consent-section {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: rgba(99, 102, 241, 0.05);
    border-radius: var(--border-radius-md);
    border: 1px solid rgba(99, 102, 241, 0.1);
}

.consent-section .checkbox-item {
    margin: 0;
    padding: 0;
    border: none;
    background: transparent;
}

.consent-section .checkbox-item:hover {
    background: transparent;
    border: none;
}

.consent-section label {
    font-size: 0.875rem;
    line-height: 1.4;
    color: var(--gray-600);
    margin-left: var(--spacing-sm);
}

.conditional-field.show {
    display: block;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.email-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

/* Botão de envio */
.submit-section {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--gray-200);
    margin-top: var(--spacing-2xl);
}

.submit-btn {
    background: linear-gradient(135deg, var(--primary-purple) 0%, var(--secondary-purple) 100%);
    color: var(--white);
    border: none;
    padding: var(--spacing-lg) var(--spacing-3xl);
    font-size: 1.125rem;
    font-weight: var(--font-weight-semibold);
    border-radius: var(--border-radius-lg);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.submit-btn:active {
    transform: translateY(0);
}

.submit-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.submit-btn:hover::before {
    left: 100%;
}

/* Responsividade */
@media (max-width: 768px) {
    body {
        padding: var(--spacing-md);
    }
    
    .survey-title {
        font-size: 1.875rem;
    }
    
    .survey-subtitle {
        font-size: 1rem;
    }
    
    .survey-form {
        padding: var(--spacing-lg);
    }
    
    .question-block {
        padding: var(--spacing-lg);
    }
    
    .email-inputs {
        grid-template-columns: 1fr;
    }
    
    .submit-btn {
        width: 100%;
        padding: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    .survey-header {
        padding: var(--spacing-xl) var(--spacing-lg);
    }
    
    .survey-title {
        font-size: 1.5rem;
    }
    
    .block-title {
        font-size: 1.125rem;
    }
}

/* Acessibilidade */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Estados de foco para acessibilidade */
.checkbox-item:focus-within,
.radio-item:focus-within {
    outline: 2px solid var(--primary-purple);
    outline-offset: 2px;
}

/* Indicador de progresso visual */
.progress-indicator {
    position: fixed;
    top: 0;
    left: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-purple) 0%, var(--secondary-purple) 100%);
    transition: width 0.3s ease;
    z-index: 1000;
}