/* ========================================
   VARIÁVEIS CSS E CONFIGURAÇÕES GLOBAIS
   ======================================== */

/* Definição de variáveis para cores e tipografia */
:root {
    --primary-color: #2563eb;      /* Azul principal */
    --primary-dark: #1e40af;       /* Azul escuro para hover */
    --secondary-color: #10b981;    /* Verde secundário */
    --background-color: #0f172a;   /* Fundo principal escuro */
    --surface-color: #1e293b;      /* Cor de superfície dos cards */
    --surface-light: #334155;      /* Superfície mais clara */
    --text-color: #f8fafc;         /* Texto principal claro */
    --text-secondary: #cbd5e1;     /* Texto secundário */
    --text-muted: #94a3b8;         /* Texto ainda mais sutil */
    --border-color: #334155;       /* Cor das bordas */
    --success-color: #22c55e;      /* Verde sucesso */
    --warning-color: #f59e0b;      /* Amarelo aviso */
    --error-color: #ef4444;        /* Vermelho erro */
    
    /* Tipografia */
    --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;
    
    /* Espaçamentos */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Bordas e sombras */
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.2);
}

/* ========================================
   RESET E ESTILOS BASE
   ======================================== */

/* Reset básico para consistência entre navegadores */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Configurações base do HTML */
html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth; /* Scroll suave para navegação interna */
}

/* Estilos base do body */
body {
    font-family: var(--font-family);
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: var(--line-height-base);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Container padrão para centralizar conteúdo */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

/* Responsividade do container */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
}

/* ========================================
   CABEÇALHO E NAVEGAÇÃO
   ======================================== */

/* Cabeçalho principal fixo */
.main-header {
    background-color: var(--surface-color);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
    background-color: rgba(30, 41, 59, 0.95);
}

/* Título e subtítulo do site */
.site-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
    text-align: center;
    padding-top: var(--spacing-lg);
}

.site-subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: var(--spacing-md);
}

/* Menu de navegação */
.main-nav {
    padding: var(--spacing-md) 0;
}

.main-nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

/* Links de navegação */
.nav-link {
    display: inline-block;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

/* Efeito hover nos links */
.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.2), transparent);
    transition: left 0.5s;
}

.nav-link:hover::before {
    left: 100%;
}

.nav-link:hover {
    color: var(--text-color);
    background-color: rgba(37, 99, 235, 0.1);
    transform: translateY(-2px);
}

/* Link ativo */
.nav-link.active {
    background-color: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-md);
}

/* ========================================
   CONTEÚDO PRINCIPAL
   ======================================== */

/* Container do conteúdo principal */
.main-content {
    margin-top: 180px; /* Espaço para o header fixo */
    min-height: calc(100vh - 180px);
}

/* Seções de conteúdo */
.content-section {
    display: none;
    animation: fadeIn 0.6s ease;
    padding: var(--spacing-xxl) 0;
}

.content-section.active {
    display: block;
}

/* Animação de fade in */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Títulos das seções */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
    position: relative;
    padding-bottom: var(--spacing-md);
}

/* Linha decorativa sob o título */
.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

/* ========================================
   SEÇÃO: SOBRE MIM
   ======================================== */

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    margin-top: var(--spacing-xl);
}

.about-text p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.about-text strong {
    color: var(--primary-color);
}

/* Listas de habilidades e hobbies */
.skills-interests h3 {
    color: var(--secondary-color);
    margin-bottom: var(--spacing-md);
    font-size: 1.25rem;
}

.skills-list,
.hobbies-list {
    list-style: none;
    margin-bottom: var(--spacing-xl);
}

.skills-list li,
.hobbies-list li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    transition: transform 0.3s ease;
}

/* Ícone antes de cada item */
.skills-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.hobbies-list li {
    padding-left: 0;
}

.skills-list li:hover,
.hobbies-list li:hover {
    transform: translateX(5px);
    color: var(--primary-color);
}

/* Responsividade para telas menores */
@media (max-width: 768px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
}

/* ========================================
   SEÇÃO: FORMAÇÃO
   ======================================== */

.education-block,
.certifications-block,
.languages-block {
    background-color: var(--surface-color);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

.education-block h3,
.certifications-block h3,
.languages-block h3 {
    color: var(--secondary-color);
    margin-bottom: var(--spacing-lg);
    font-size: 1.5rem;
}

/* Item de educação */
.education-item {
    border-left: 3px solid var(--primary-color);
    padding-left: var(--spacing-lg);
}

.education-item h4 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.institution {
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.period {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
}

.description {
    line-height: 1.8;
}

/* Grid de certificações */
.certification-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.certification-item {
    background-color: var(--surface-light);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.certification-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.certification-item h4 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.certification-item .institution {
    margin-bottom: var(--spacing-xs);
}

.certification-item .year {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Lista de idiomas */
.language-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.language-item h4 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.language-level {
    margin-bottom: var(--spacing-sm);
}

.level-text {
    font-weight: 600;
    color: var(--text-secondary);
}

/* Barra de nível */
.level-bar {
    width: 100%;
    height: 8px;
    background-color: var(--surface-light);
    border-radius: 4px;
    overflow: hidden;
    margin-top: var(--spacing-sm);
}

.level-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 4px;
    transition: width 1s ease;
}

.language-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

/* ========================================
   SEÇÃO: PORTFÓLIO
   ======================================== */

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.portfolio-item {
    background-color: var(--surface-color);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.portfolio-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

/* Imagem/Ícone do projeto */
.portfolio-image {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-icon {
    font-size: 4rem;
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.2));
}

/* Conteúdo do projeto */
.portfolio-content {
    padding: var(--spacing-xl);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.portfolio-content h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
}

.project-description {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    flex-grow: 1;
}

/* Tags de tecnologia */
.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.tech-tag {
    background-color: var(--surface-light);
    color: var(--text-secondary);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 20px;
    font-size: 0.875rem;
    border: 1px solid var(--border-color);
}

/* Links do projeto */
.project-links {
    margin-top: auto;
}

.project-link {
    display: inline-block;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    padding: var(--spacing-sm) 0;
    position: relative;
    transition: all 0.3s ease;
}

.project-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.project-link:hover::after {
    width: 100%;
}

.project-link.disabled {
    color: var(--text-muted);
    cursor: not-allowed;
    opacity: 0.6;
}

.project-link.disabled:hover::after {
    width: 0;
}

/* ========================================
   SEÇÃO: CONTATO
   ======================================== */

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    margin-top: var(--spacing-xl);
}

.contact-info h3,
.contact-form-wrapper h3 {
    color: var(--secondary-color);
    margin-bottom: var(--spacing-lg);
    font-size: 1.5rem;
}

.contact-info p {
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

/* Métodos de contato */
.contact-methods {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-method {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-md);
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
}

.contact-method:hover {
    background-color: var(--surface-light);
    transform: translateX(10px);
}

.contact-icon {
    font-size: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background-color: var(--surface-light);
    border-radius: 50%;
}

.contact-method h4 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.contact-method p {
    color: var(--text-secondary);
    margin: 0;
}

/* Formulário de contato */
.contact-form {
    background-color: var(--surface-color);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    background-color: var(--surface-light);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-color);
    font-family: var(--font-family);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background-color: rgba(37, 99, 235, 0.05);
}

/* Botão de envio */
.submit-button {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: block;
    width: 100%;
    position: relative;
    overflow: hidden;
}

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

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

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

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

.submit-button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Estado de envio */
.submit-button.sending {
    background: linear-gradient(135deg, var(--warning-color), #d97706);
}

/* Mensagem de status do formulário */
.form-status {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    font-weight: 500;
    text-align: center;
    display: none;
    animation: slideIn 0.3s ease;
}

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

.form-status.success {
    background-color: rgba(34, 197, 94, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.form-status.error {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* Animação de sucesso no formulário */
.form-success {
    animation: successPulse 0.5s ease;
}

@keyframes successPulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.02);
        box-shadow: 0 0 20px rgba(34, 197, 94, 0.3);
    }
    100% {
        transform: scale(1);
    }
}

/* Responsividade para telas menores */
@media (max-width: 768px) {
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
}

/* ========================================
   RODAPÉ
   ======================================== */

.main-footer {
    background-color: var(--surface-color);
    padding: var(--spacing-xl) 0;
    text-align: center;
    margin-top: var(--spacing-xxl);
    border-top: 1px solid var(--border-color);
}

.main-footer p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.main-footer p:last-child {
    margin-bottom: 0;
    font-size: 0.875rem;
}

/* ========================================
   UTILITÁRIOS E RESPONSIVIDADE GERAL
   ======================================== */

/* Classe para texto centralizado */
.text-center {
    text-align: center;
}

/* Classes de margem */
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }
.mt-5 { margin-top: var(--spacing-xxl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }
.mb-5 { margin-bottom: var(--spacing-xxl); }

/* Responsividade geral */
@media (max-width: 1024px) {
    .portfolio-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    .section-title {
        font-size: 2rem;
    }
    
    .main-content {
        margin-top: 160px;
    }
    
    .certification-grid {
        grid-template-columns: 1fr;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .main-nav ul {
        flex-direction: column;
        align-items: center;
    }
    
    .nav-link {
        width: 100%;
        text-align: center;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
}