/* ============================================ */
/* GERADOR DE CPF - CSS COMPLETO */
/* Baseado no design do gerador de senhas */
/* ============================================ */

/* 1. VARIÁVEIS E IMPORTAÇÕES */
@import url('https://fonts.googleapis.com/css2?family=Roboto+Mono:wght@400;500;600&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    /* Cores principais (baseadas no gerador de senhas) */
    --color-primary-1: #8BC34A;
    --color-primary-2: #7CB342;
    --color-primary-3: #9CCC65;
    --color-primary-light: #8BC34A20;
    
    /* Cores neutras */
    --color-neutral-1: #f8fafc;
    --color-neutral-2: #24232b;
    --color-neutral-3: #13121a;
    --color-neutral-4: #2a2933;
    --color-neutral-5: #3a3944;
    
    /* Cores de status */
    --color-success: #4CAF50;
    --color-warning: #FF9800;
    --color-error: #F44336;
    --color-info: #2196F3;
    
    /* Layout */
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.4);
    --transition: all 0.3s ease;
}

/* 2. RESET E ESTILOS GLOBAIS */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--color-neutral-3) 0%, #1a1a2e 100%);
    font-family: 'Inter', sans-serif;
    padding: 20px;
    line-height: 1.6;
}

/* 3. CONTAINER PRINCIPAL */
.main-container {
    width: 100%;
    max-width: 480px;
}

.card {
    background-color: var(--color-neutral-2);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

/* 4. CABEÇALHO */
.card-header {
    text-align: center;
    padding: 32px 24px 24px;
    background: linear-gradient(135deg, var(--color-neutral-4) 0%, var(--color-neutral-2) 100%);
    border-bottom: 1px solid var(--color-neutral-4);
}

.header-image {
    width: 80px;
    height: 80px;
    margin-bottom: 16px;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
    border-radius: 50%;
    object-fit: cover;
}

.title {
    color: var(--color-neutral-1);
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 0;
    letter-spacing: -0.5px;
}

.subtitle {
    color: var(--color-neutral-1);
    opacity: 0.8;
    font-size: 0.9rem;
    margin-top: 8px;
    font-weight: 400;
}

/* 5. SEÇÃO DO CPF */
.cpf-section {
    padding: 24px;
    border-bottom: 1px solid var(--color-neutral-4);
}

.cpf-container {
    display: flex;
    align-items: center;
    background-color: var(--color-neutral-3);
    border-radius: var(--border-radius-sm);
    padding: 16px;
    margin-bottom: 20px;
    border: 2px solid transparent;
    transition: var(--transition);
    position: relative;
}

.cpf-container:focus-within {
    border-color: var(--color-primary-1);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.cpf-output {
    flex: 1;
    font-family: 'Roboto Mono', monospace;
    font-size: 1.4rem;
    color: var(--color-neutral-1);
    word-break: break-all;
    padding-right: 12px;
    min-height: 32px;
    font-weight: 600;
    letter-spacing: 1px;
}

.cpf-actions {
    display: flex;
    gap: 8px;
}

.btn-icon {
    background: var(--color-neutral-4);
    border: none;
    color: var(--color-neutral-1);
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
}

.btn-icon:hover {
    background: var(--color-neutral-5);
    color: var(--color-primary-1);
    transform: scale(1.05);
}

.btn-icon:active {
    transform: scale(0.95);
}

/* 6. VALIDADOR */
.validator-section {
    margin-top: 24px;
}

.input-group {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.cpf-input {
    flex: 1;
    padding: 12px 16px;
    border-radius: var(--border-radius-sm);
    border: 2px solid var(--color-neutral-4);
    background-color: var(--color-neutral-3);
    color: var(--color-neutral-1);
    font-family: 'Roboto Mono', monospace;
    font-size: 1rem;
    transition: var(--transition);
}

.cpf-input:focus {
    outline: none;
    border-color: var(--color-primary-1);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.cpf-input::placeholder {
    color: var(--color-neutral-5);
    font-family: 'Inter', sans-serif;
}

.validate-btn {
    background: linear-gradient(135deg, var(--color-info) 0%, #1976D2 100%);
    border: none;
    padding: 12px 20px;
    border-radius: var(--border-radius-sm);
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

.validate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.3);
}

.validation-result {
    padding: 12px 16px;
    border-radius: var(--border-radius-sm);
    font-weight: 500;
    display: none;
    animation: slideIn 0.3s ease;
}

.validation-result.valid {
    display: block;
    background-color: rgba(76, 175, 80, 0.1);
    border-left: 4px solid var(--color-success);
    color: var(--color-success);
}

.validation-result.invalid {
    display: block;
    background-color: rgba(244, 67, 54, 0.1);
    border-left: 4px solid var(--color-error);
    color: var(--color-error);
}

/* 7. SEÇÃO DE OPÇÕES */
.options-section {
    padding: 24px;
}

.section-title {
    color: var(--color-neutral-1);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.section-title::before {
    content: "";
    width: 4px;
    height: 18px;
    background: var(--color-primary-1);
    border-radius: 2px;
}

.options-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.checkbox-group {
    border: none;
    padding: 0;
    margin: 0;
}

.checkbox-legend {
    color: var(--color-neutral-1);
    font-weight: 500;
    font-size: 0.95rem;
    margin-bottom: 16px;
    padding: 0;
}

.checkbox-item {
    display: flex;
    align-items: center;
    margin-bottom: 14px;
    padding: 8px 0;
    transition: var(--transition);
    border-radius: var(--border-radius-sm);
}

.checkbox-item:hover {
    background-color: var(--color-neutral-4);
    padding-left: 8px;
    padding-right: 8px;
}

.checkbox-input {
    display: none;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--color-neutral-1);
    cursor: pointer;
    font-size: 0.95rem;
    user-select: none;
    width: 100%;
}

.checkbox-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-neutral-5);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    position: relative;
}

.checkbox-custom::after {
    content: "✓";
    color: var(--color-neutral-1);
    font-size: 12px;
    font-weight: bold;
    opacity: 0;
    transition: var(--transition);
}

.checkbox-input:checked + .checkbox-label .checkbox-custom {
    background-color: var(--color-primary-1);
    border-color: var(--color-primary-1);
}

.checkbox-input:checked + .checkbox-label .checkbox-custom::after {
    opacity: 1;
}

.checkbox-input:focus + .checkbox-label .checkbox-custom {
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* Botão Gerar */
.generate-btn {
    background: linear-gradient(135deg, var(--color-primary-1), var(--color-primary-2));
    border: none;
    padding: 16px 24px;
    border-radius: var(--border-radius-sm);
    color: var(--color-neutral-3);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 8px;
    box-shadow: 0 4px 12px rgba(139, 195, 74, 0.3);
}

.generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(139, 195, 74, 0.4);
}

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

/* 8. SEÇÃO DE EXPLICAÇÃO */
.explanation-section {
    padding: 24px;
    background-color: var(--color-neutral-4);
    border-top: 1px solid var(--color-neutral-5);
}

.explanation-container {
    min-height: 300px;
    position: relative;
}

.explanation-step {
    display: none;
    animation: fadeIn 0.5s ease-out;
}

.explanation-step.active {
    display: block;
}

/* Slide 1: Estrutura */
.step-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 25px;
}

.step-number {
    background: linear-gradient(135deg, var(--color-primary-1), var(--color-primary-2));
    color: var(--color-neutral-3);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
    box-shadow: 0 4px 8px rgba(139, 195, 74, 0.3);
}

.step-title {
    color: var(--color-neutral-1);
    font-size: 1.3rem;
    font-weight: 600;
    margin: 0;
}

.cpf-visual-clean {
    background: var(--color-neutral-3);
    border-radius: var(--border-radius-sm);
    padding: 20px;
    margin: 20px 0;
    border: 1px solid var(--color-neutral-4);
}

.cpf-breakdown {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.cpf-digit-group {
    display: flex;
    gap: 2px;
    align-items: center;
}

.cpf-digit {
    width: 36px;
    height: 44px;
    background: var(--color-neutral-4);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Roboto Mono', monospace;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-neutral-1);
    transition: all 0.2s ease;
}

.cpf-digit.verifier {
    background: linear-gradient(135deg, var(--color-info), #1976D2);
    color: white;
}

.dot-separator, .dash-separator {
    color: var(--color-neutral-1);
    opacity: 0.5;
    font-weight: bold;
    font-size: 1.2rem;
    margin: 0 4px;
}

.dash-separator {
    opacity: 0.8;
}

.cpf-label {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 10px;
}

.label-item {
    text-align: center;
    font-size: 0.85rem;
    color: var(--color-neutral-1);
    opacity: 0.8;
}

.label-demo {
    display: flex;
    gap: 4px;
    justify-content: center;
    margin-bottom: 4px;
    align-items: center;
}

.demo-digit {
    width: 20px;
    height: 20px;
    font-size: 0.8rem;
}

.demo-ellipsis {
    font-size: 0.8rem;
    color: var(--color-neutral-1);
    opacity: 0.7;
}

.simple-message {
    background: var(--color-neutral-3);
    border-radius: var(--border-radius-sm);
    padding: 20px;
    margin-top: 20px;
    border-left: 4px solid var(--color-primary-1);
}

.simple-message p {
    color: var(--color-neutral-1);
    line-height: 1.6;
    margin-bottom: 15px;
}

.simple-message strong {
    color: var(--color-primary-1);
}

/* Slide 2: Cálculo */
.calculation-explanation {
    background: var(--color-neutral-3);
    border-radius: var(--border-radius-sm);
    padding: 20px;
    margin: 20px 0;
}

.process-steps {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.process-step {
    display: flex;
    gap: 15px;
    align-items: flex-start;
}

.step-marker {
    background: linear-gradient(135deg, var(--color-primary-1), var(--color-primary-2));
    color: var(--color-neutral-3);
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.step-content h4 {
    color: var(--color-primary-1);
    margin-bottom: 8px;
    font-size: 1.1rem;
    font-weight: 600;
}

.step-content p {
    color: var(--color-neutral-1);
    opacity: 0.9;
    font-size: 0.95rem;
    line-height: 1.5;
}

.formula-box {
    background: var(--color-neutral-4);
    border-radius: 8px;
    padding: 12px;
    margin-top: 10px;
    font-family: 'Roboto Mono', monospace;
    font-size: 0.95rem;
    color: var(--color-primary-1);
    border: 1px solid var(--color-neutral-5);
    line-height: 1.6;
}

.key-insight {
    background: linear-gradient(135deg, rgba(33, 150, 243, 0.1), rgba(25, 118, 210, 0.05));
    border-radius: var(--border-radius-sm);
    padding: 20px;
    margin-top: 25px;
    border: 1px solid rgba(33, 150, 243, 0.2);
}

.key-insight h4 {
    color: var(--color-info);
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.key-insight p {
    color: var(--color-neutral-1);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* Slide 3: Benefícios */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
    margin: 25px 0;
}

.benefit-card {
    background: var(--color-neutral-3);
    border-radius: var(--border-radius-sm);
    padding: 20px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid transparent;
}

.benefit-card:hover {
    border-color: var(--color-primary-1);
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.benefit-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.benefit-card h4 {
    color: var(--color-primary-1);
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.benefit-card p {
    color: var(--color-neutral-1);
    opacity: 0.8;
    font-size: 0.9rem;
    line-height: 1.5;
}

.real-example {
    background: var(--color-neutral-3);
    border-radius: var(--border-radius-sm);
    padding: 20px;
    margin-top: 25px;
    border-left: 4px solid var(--color-success);
}

.real-example h4 {
    color: var(--color-success);
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.real-example p {
    color: var(--color-neutral-1);
    line-height: 1.6;
}

.curiosity-box {
    background: linear-gradient(135deg, rgba(255, 152, 0, 0.1), rgba(245, 124, 0, 0.05));
    border-radius: var(--border-radius-sm);
    padding: 20px;
    margin-top: 25px;
    border: 1px solid rgba(255, 152, 0, 0.2);
}

.curiosity-box h4 {
    color: var(--color-warning);
    font-size: 1.1rem;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.curiosity-box p {
    color: var(--color-neutral-1);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* Navegação entre passos */
.step-navigation {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--color-neutral-5);
}

.nav-btn {
    background: var(--color-neutral-3);
    border: 2px solid var(--color-neutral-5);
    color: var(--color-neutral-1);
    padding: 10px 20px;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.nav-btn:hover:not(:disabled) {
    background: var(--color-neutral-4);
    border-color: var(--color-primary-1);
    color: var(--color-primary-1);
}

.nav-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.step-dots {
    display: flex;
    gap: 8px;
}

.step-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--color-neutral-5);
    cursor: pointer;
    transition: var(--transition);
}

.step-dot.active {
    background-color: var(--color-primary-1);
    transform: scale(1.2);
}

.step-dot:hover {
    background-color: var(--color-primary-3);
}

/* 9. DISCLAIMER */
.disclaimer {
    padding: 16px 24px;
    background-color: rgba(255, 152, 0, 0.1);
    border-top: 1px solid var(--color-warning);
    color: var(--color-warning);
    font-size: 0.9rem;
    line-height: 1.5;
}

.disclaimer i {
    margin-right: 8px;
}

.disclaimer strong {
    color: var(--color-warning);
}

/* 10. ANIMAÇÕES */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

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

@keyframes bounceIn {
    0% { transform: scale(0.5); opacity: 0; }
    60% { transform: scale(1.1); opacity: 1; }
    100% { transform: scale(1); }
}

/* 11. UTILIDADES */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* 12. RESPONSIVIDADE */
@media (max-width: 520px) {
    .main-container {
        max-width: 100%;
    }
    
    .card {
        border-radius: 16px;
    }
    
    .card-header {
        padding: 24px 20px 20px;
    }
    
    .header-image {
        width: 70px;
        height: 70px;
    }
    
    .title {
        font-size: 1.5rem;
    }
    
    .subtitle {
        font-size: 0.8rem;
    }
    
    .cpf-section,
    .options-section,
    .explanation-section {
        padding: 20px;
    }
    
    .cpf-output {
        font-size: 1.2rem;
    }
    
    .input-group {
        flex-direction: column;
    }
    
    .validate-btn {
        width: 100%;
        justify-content: center;
    }
    
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .step-navigation {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-btn {
        width: 100%;
        justify-content: center;
    }
    
    .cpf-digit {
        width: 30px;
        height: 38px;
        font-size: 1.1rem;
    }
    
    .cpf-label {
        flex-direction: column;
        gap: 15px;
    }
    
    .dot-separator, .dash-separator {
        margin: 0 2px;
    }
}

@media (max-width: 480px) {
    .cpf-digit {
        width: 26px;
        height: 34px;
        font-size: 1rem;
    }
    
    .process-step {
        flex-direction: column;
        gap: 10px;
    }
    
    .step-marker {
        width: 40px;
        height: 40px;
    }
}

/* 13. ESTILOS DE IMPRESSÃO */
@media print {
    .btn-icon,
    .generate-btn,
    .validate-btn,
    .step-navigation,
    .disclaimer {
        display: none !important;
    }
    
    .card {
        box-shadow: none !important;
        border: 1px solid #ccc !important;
        background: white !important;
        color: black !important;
    }
    
    .cpf-output {
        color: black !important;
    }
    
    .explanation-section {
        background: #f5f5f5 !important;
    }
}