/* VARIABLES DE COLOR */
:root {
    --color-primary: #1e74c5; 
    --color-secondary: #222;  
    --color-background: #1a1a1a; 
    --color-text-light: #f0f0f0;
    --color-text-dark: #333333;
    --color-gray-light: #555555;
    --color-card-bg: #2e2e2e; 
}

/* RESET BÁSICO Y FUENTES */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--color-background);
    color: var(--color-text-light);
    line-height: 1.6;
}

.container {
    width: 95%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 0;
}

/* ESTILOS GLOBALES DE BOTONES */
.btn {
    display: inline-block;
    padding: 12px 25px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.3s ease, transform 0.2s ease;
    text-align: center;
}

.btn:hover {
    transform: translateY(-2px);
}

/* ESTILOS DEL ENCABEZADO (HERO SECTION) */
.hero-section {
    position: relative;
    background-image: url('img/Fondo.jpg');
    background-size: cover;
    background-position: center;
    color: var(--color-text-light);
    padding: 80px 0;
    text-align: center;
    overflow: hidden; 
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6); 
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.profile-pic {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    border: 5px solid var(--color-primary);
    margin-bottom: 20px;
    box-shadow: 0 0 15px rgba(255, 65, 54, 0.5);
}

.hero-section h1 {
    margin: 10px 0 5px 0;
    font-size: 3em;
    color: var(--color-primary);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
}

.hero-section .tagline {
    font-size: 1.3em;
    margin-bottom: 20px;
    color: var(--color-text-light);
}

.hero-section .bio {
    max-width: 700px;
    margin: 0 auto 30px auto;
    font-size: 1.1em;
    line-height: 1.8;
}

.btn-github-header {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    border: 2px solid var(--color-primary);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.btn-github-header:hover {
    background-color: transparent;
    border-color: var(--color-text-light);
    color: var(--color-text-light);
}

/* ESTILOS DE LA SECCIÓN DE PROYECTOS */
.projects-section {
    padding: 60px 0;
    text-align: center;
    background-color: var(--color-background);
}

.projects-section h2 {
    font-size: 2.5em;
    color: var(--color-primary);
    margin-bottom: 50px;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 35px;
}

.project-card {
    background-color: var(--color-card-bg);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.4);
    text-align: left;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.6);
}

.project-image {
    width: 100%;
    height: 180px;
    background-color: var(--color-gray-light); 
    background-size: cover;
    background-position: center;
    border-bottom: 1px solid var(--color-gray-light);
}

.project-card h3 {
    color: var(--color-primary);
    font-size: 1.6em;
    margin: 20px 20px 10px 20px;
}

.project-card p {
    color: var(--color-text-light);
    font-size: 0.95em;
    margin: 0 20px 15px 20px;
    flex-grow: 1; 
}

.project-tags {
    margin: 0 20px 15px 20px;
}

.project-tags span {
    display: inline-block;
    background-color: #3a3a3a;
    color: var(--color-primary);
    font-size: 0.8em;
    padding: 5px 10px;
    border-radius: 4px;
    margin-right: 8px;
    margin-bottom: 8px;
}

.btn-project-github:hover {
    background-color: var(--color-primary);
    color: var(--color-secondary);
}

/* ESTILOS DE LA SECCIÓN DE CONTACTO */
.contact-section {
    background-color: var(--color-secondary);
    text-align: center;
    padding: 80px 0;
}

.contact-section h2 {
    font-size: 2.2em;
    color: var(--color-primary);
    margin-bottom: 20px;
}

.contact-section p {
    font-size: 1.1em;
    max-width: 600px;
    margin: 0 auto 40px auto;
    color: var(--color-text-light);
}

.btn-contact {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.btn-contact:hover {
    background-color: var(--color-text-light);
    color: var(--color-primary);
}

/* ESTILOS DEL PIE DE PÁGINA */
footer {
    text-align: center;
    padding: 30px 0;
    background-color: #000; 
    color: var(--color-gray-light);
    font-size: 0.9em;
    border-top: 1px solid var(--color-gray-light);
}

/* RESPONSIVE DESIGN */
@media (max-width: 900px) {
    .hero-section h1 {
        font-size: 2.2em;
    }
    .hero-section .tagline {
        font-size: 1em;
    }
    .hero-section .bio {
        font-size: 0.9em;
    }
    .projects-grid {
        grid-template-columns: 1fr; 
    }
    .project-card {
        margin: 0 auto;
        max-width: 350px;
    }
}

@media (max-width: 480px) {
    .profile-pic {
        width: 100px;
        height: 100px;
    }
    .hero-section h1 {
        font-size: 1.8em;
    }
    .btn {
        padding: 10px 20px;
        font-size: 0.9em;
    }
    .container {
        width: 95%;
    }
}