/* Variáveis CSS para cores e fontes */
:root {
    --primary-color: #3498db; /* Azul vibrante */
    --primary-dark: #2980b9; /* Azul mais escuro */
    --secondary-color: #2ecc71; /* Verde complementar */
    --secondary-dark: #27ae60; /* Verde mais escuro */
    --text-color: #333;
    --text-light: #666;
    --text-lighter: #999;
    --background-color: #f8f9fa;
    --card-background: #fff;
    --border-color: #e9ecef;
    --shadow-light: rgba(0, 0, 0, 0.1);
    --shadow-medium: rgba(0, 0, 0, 0.15);
    --shadow-dark: rgba(0, 0, 0, 0.2);
    --font-family-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-family-secondary: 'Georgia', serif;
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-primary);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
    padding: 20px;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Animações de entrada */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* Seção Hero (Introdução) */
.hero-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 80px 20px;
    background: linear-gradient(135deg, var(--card-background) 0%, #f8f9fa 100%);
    border-radius: 16px;
    box-shadow: 0 8px 32px var(--shadow-light);
    margin-bottom: 50px;
    position: relative;
    overflow: hidden;
    animation: fadeInScale var(--transition-slow);
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(52, 152, 219, 0.05) 0%, transparent 70%);
    animation: pulse 4s ease-in-out infinite;
    z-index: 0;
}

.profile-picture-container {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    overflow: hidden;
    margin-bottom: 30px;
    border: 5px solid var(--primary-color);
    box-shadow: 0 0 30px var(--shadow-medium);
    transition: all var(--transition-medium);
    position: relative;
    z-index: 1;
    animation: fadeInScale var(--transition-slow) 0.2s;
}

.profile-picture-container:hover {
    transform: scale(1.1);
    box-shadow: 0 0 40px var(--shadow-dark);
    border-color: var(--secondary-color);
}

.profile-picture {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-medium);
}

.profile-picture-container:hover .profile-picture {
    transform: scale(1.1);
}

.hero-content {
    position: relative;
    z-index: 1;
    animation: fadeInUp var(--transition-slow) 0.4s;
}

.hero-content h1 {
    font-size: 3.2em;
    color: var(--primary-color);
    margin-bottom: 15px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp var(--transition-slow) 0.6s;
}

.hero-content .tagline {
    font-size: 1.6em;
    color: var(--secondary-color);
    margin-bottom: 25px;
    font-family: var(--font-family-secondary);
    font-style: italic;
    animation: fadeInUp var(--transition-slow) 0.8s;
}

.hero-content .summary-text {
    font-size: 1.2em;
    max-width: 800px;
    margin: 0 auto;
    color: var(--text-light);
    line-height: 1.8;
    animation: fadeInUp var(--transition-slow) 1s;
}

/* Seção de Projetos */
.projects-section {
    padding: 60px 20px;
    background-color: var(--card-background);
    border-radius: 16px;
    box-shadow: 0 8px 32px var(--shadow-light);
    margin-bottom: 50px;
    animation: fadeInUp var(--transition-slow) 0.2s;
}

.projects-section h2,
.skills-section h2 {
    text-align: center;
    font-size: 2.8em;
    color: var(--primary-color);
    margin-bottom: 50px;
    font-weight: 700;
    position: relative;
}

.projects-section h2::after,
.skills-section h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.project-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 35px;
    text-align: center;
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(52, 152, 219, 0.1), transparent);
    transition: left var(--transition-slow);
}

.project-card:hover::before {
    left: 100%;
}

.project-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 40px var(--shadow-medium);
    border-color: var(--primary-color);
}

.project-card h3 {
    font-size: 2em;
    color: var(--primary-color);
    margin-bottom: 20px;
    font-weight: 600;
    transition: color var(--transition-fast);
}

.project-card:hover h3 {
    color: var(--secondary-color);
}

.project-card .project-description {
    font-size: 1.1em;
    color: var(--text-light);
    margin-bottom: 25px;
    line-height: 1.7;
}

.project-card .project-link {
    display: inline-block;
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
    color: white;
    padding: 12px 30px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9em;
}

.project-card .project-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    transition: left var(--transition-medium);
    z-index: -1;
}

.project-card .project-link:hover::before {
    left: 0;
}

.project-card .project-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px var(--shadow-medium);
}

/* Seção de Habilidades */
.skills-section {
    padding: 60px 20px;
    background-color: var(--card-background);
    border-radius: 16px;
    box-shadow: 0 8px 32px var(--shadow-light);
    margin-bottom: 50px;
    animation: fadeInUp var(--transition-slow) 0.4s;
}

.skills-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}

.skill-tag {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 15px 25px;
    border-radius: 30px;
    font-size: 1em;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.skill-tag::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
    transition: left var(--transition-medium);
    z-index: -1;
}

.skill-tag:hover::before {
    left: 0;
}

.skill-tag:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 10px 25px var(--shadow-medium);
}

/* Rodapé */
footer {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-lighter);
    font-size: 1em;
    margin-top: 50px;
    background-color: var(--card-background);
    border-radius: 16px;
    box-shadow: 0 8px 32px var(--shadow-light);
    animation: fadeInUp var(--transition-slow) 0.6s;
}

/* Responsividade */
@media (max-width: 1024px) {
    .hero-content h1 {
        font-size: 2.8em;
    }
    
    .projects-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 30px;
    }
}

@media (max-width: 768px) {
    body {
        padding: 15px;
    }
    
    .hero-section {
        padding: 60px 20px;
        margin-bottom: 40px;
    }
    
    .profile-picture-container {
        width: 150px;
        height: 150px;
        margin-bottom: 25px;
    }
    
    .hero-content h1 {
        font-size: 2.2em;
    }

    .hero-content .tagline {
        font-size: 1.3em;
    }
    
    .hero-content .summary-text {
        font-size: 1.1em;
    }

    .projects-section h2,
    .skills-section h2 {
        font-size: 2.2em;
        margin-bottom: 40px;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .project-card {
        padding: 25px;
    }
    
    .skills-grid {
        gap: 15px;
    }
    
    .skill-tag {
        padding: 12px 20px;
        font-size: 0.9em;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.8em;
    }
    
    .hero-content .tagline {
        font-size: 1.1em;
    }
    
    .projects-section h2,
    .skills-section h2 {
        font-size: 1.8em;
    }
    
    .project-card h3 {
        font-size: 1.6em;
    }
}

/* Animações de scroll */
@media (prefers-reduced-motion: no-preference) {
    .hero-section,
    .projects-section,
    .skills-section,
    footer {
        opacity: 0;
        animation: fadeInUp var(--transition-slow) forwards;
    }
    
    .hero-section {
        animation-delay: 0.1s;
    }
    
    .projects-section {
        animation-delay: 0.2s;
    }
    
    .skills-section {
        animation-delay: 0.3s;
    }
    
    footer {
        animation-delay: 0.4s;
    }
}