:root {
    --primary: #1b1c1f;
    --secondary: #3a7bd5;
    --accent: #20e3b2;
    --light: #242529;
    --dark: #1b1c1f;
    --text: #f2f2f3;
    --text-light: #0f0f11;
    --success: #2ecc71;
    --card-bg: #222;
    --border: #333;
}

*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text);
    background-color: var(--primary);
    scroll-behavior: smooth;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: 80px 0;
    scroll-margin-top: 100px; /* altura del header + un poco de margen */

}

h1, h2, h3, h4 {
    margin-bottom: 20px;
    color: var(--secondary);
}

p {
    margin-bottom: 15px;
}

a {
    text-decoration: none;
    color: var(--secondary);
    transition: color 0.3s;
}

a:hover {
    color: var(--accent);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 30px;
    background-color: var(--secondary);
    color: var(--text-light);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    justify-content: center;
}

.btn:hover {
    background-color: var(--accent);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(32, 227, 178, 0.3);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--secondary);
    color: var(--secondary);
}

.btn-outline:hover {
    background: var(--secondary);
    color: var(--text-light);
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--secondary);
    margin: 15px auto;
    border-radius: 2px;
}

/* Header */
header {
    background-color: var(--dark);
    color: var(--text);
    padding: 20px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    display: flex;
    align-items: center;
    color: var(--secondary);
}

.logo i {
    margin-right: 10px;
    color: var(--secondary);
}

.nav-links {
    display: flex;
    list-style: none;
    align-items: center;
}

.nav-links li {
    margin-left: 30px;
}

.nav-links a {
    color: var(--text);
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--secondary);
}

.language-selector {
    display: flex;
    margin-left: 20px;
}

.lang-btn {
    background: transparent;
    border: 1px solid var(--secondary);
    color: var(--text);
    padding: 5px 10px;
    cursor: pointer;
    transition: all 0.3s;
}

.lang-btn:first-child {
    border-radius: 3px 0 0 3px;
    border-right: none;
}

.lang-btn:last-child {
    border-radius: 0 3px 3px 0;
}

.lang-btn.active {
    background-color: var(--secondary);
    border-color: var(--secondary);
    color: var(--text-light);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--dark), #222);
    color: var(--text);
    padding: 150px 0 100px;
    margin-top: 70px;
}

.hero-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.hero-text {
    flex: 1;
}

.hero-image {
    flex: 1;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    max-width: 500px; /* limita ancho del contenedor */
    margin: 0 auto;
}

.image-placeholder {
    background: var(--card-bg);
    border: 2px dashed var(--secondary);
    border-radius: 10px;
    padding: 60px 40px;
    color: var(--secondary);
    text-align: center;
}

.image-placeholder.large {
    padding: 100px 60px;
}

.image-placeholder i {
    font-size: 4rem;
    margin-bottom: 20px;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    color: var(--secondary);
    animation: fadeIn 1s ease-in;
}

.hero p {
    font-size: 1.5rem;
    max-width: 800px;
    margin: 0 auto 30px;
    animation: fadeIn 1.5s ease-in;
}

.hero-flag {
    font-size: 2rem;
    margin-bottom: 20px;
    animation: bounce 2s infinite;
    color: var(--secondary);
}

/* About Section */
.about-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.about-text {
    flex: 1;
}

.stats {
    display: flex;
    justify-content: space-between;
    margin-top: 40px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--secondary);
    margin-bottom: 10px;
}

.stat-text {
    color: var(--text);
    font-size: 0.9rem;
}

.about-image {
    flex: 1;
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
}

.about-photo {
    width: 100%;
    max-width: 650px; /* ajusta el tamaño máximo a lo que quieras */
    height: auto;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    border: 3px solid var(--secondary);
}

/* Experience Section */
.experience {
    background-color: var(--light);
}

.timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 6px;
    background-color: var(--secondary);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -3px;
}

.timeline-item {
    padding: 10px 40px;
    position: relative;
    width: 50%;
    box-sizing: border-box;
}

.timeline-item:nth-child(odd) {
    left: 0;
}

.timeline-item:nth-child(even) {
    left: 50%;
}

.timeline-content {
    padding: 25px;
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    color: var(--text);
    position: relative;
}

.company-logo {
    position: absolute;
    top: -20px;
    right: 20px;
    background: var(--secondary);
    color: var(--text-light);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.timeline-date {
    font-weight: bold;
    color: var(--secondary);
    margin-bottom: 15px;
}

.experience-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 15px;
}

.experience-tag {
    background: rgba(58, 123, 213, 0.2);
    color: var(--secondary);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
}

/* Education Section */
.education {
    background-color: var(--primary);
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.education-card {
    background: var(--card-bg);
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s;
}

.education-card:hover {
    transform: translateY(-5px);
}

.education-icon {
    width: 70px;
    height: 70px;
    background: var(--secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--text-light);
    font-size: 1.8rem;
}

.education-date {
    color: var(--secondary);
    font-weight: bold;
    margin-bottom: 15px;
}

/* Skills Section */
.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.skill-category {
    background-color: var(--card-bg);
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s;
}

.skill-category:hover {
    transform: translateY(-5px);
}

.skill-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 25px;
}

.skill-header i {
    font-size: 2rem;
    color: var(--secondary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    transition: all 0.3s;
}

.skill-item:hover {
    background: rgba(58, 123, 213, 0.1);
    transform: translateX(5px);
}

.skill-item i {
    font-size: 1.5rem;
    color: var(--secondary);
    width: 30px;
    text-align: center;
}

.skill-item span {
    color: var(--text);
    font-weight: 500;
}

/* Projects Section */
.projects {
    background-color: var(--light);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.project-card {
    background: var(--card-bg);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s;
}

.project-card:hover {
    transform: translateY(-5px);
}

.project-img {
    height: 200px;
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: 3rem;
}

.project-img img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* mantiene proporción y rellena el contenedor */
    border-radius: 10px 10px 0 0; 
}
 
.project-info {
    padding: 25px;
    color: var(--text);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 15px 0;
}

.project-tag {
    background: rgba(58, 123, 213, 0.2);
    color: var(--secondary);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
}

.project-links {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.project-links .btn {
    flex: 1;
    justify-content: center;
    padding: 10px;
    font-size: 0.9rem;
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
}

.contact-info h3 {
    margin-bottom: 20px;
}

.contact-items {
    margin: 30px 0;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 25px;
    padding: 20px;
    background: var(--card-bg);
    border-radius: 8px;
    transition: transform 0.3s;
}

.contact-item:hover {
    transform: translateX(10px);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: 1.2rem;
}

.contact-details h4 {
    margin-bottom: 5px;
    color: var(--secondary);
}

.contact-social {
    justify-content: flex-start;
}

.contact-social a {
    margin: 0 15px 0 0;
}

/* Formulario de contacto */
.contact-form {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.contact-form h3 {
    text-align: center;
    margin-bottom: 30px;
}

.form-group {
    position: relative;
    margin-bottom: 30px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    background: var(--light);
    border: 2px solid var(--border);
    border-radius: 5px;
    color: var(--text);
    font-size: 16px;
    transition: all 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--secondary);
    outline: none;
    box-shadow: 0 0 0 2px rgba(58, 123, 213, 0.2);
}

.form-group label {
    position: absolute;
    top: 15px;
    left: 15px;
    color: #888;
    pointer-events: none;
    transition: all 0.3s;
    background: transparent;
}

.form-group input:focus ~ label,
.form-group textarea:focus ~ label,
.form-group input:not(:placeholder-shown) ~ label,
.form-group textarea:not(:placeholder-shown) ~ label {
    top: -12px;
    left: 10px;
    font-size: 14px;
    background: var(--card-bg);
    padding: 0 8px;
    color: var(--secondary);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: transparent;
}

.contact-form .btn {
    width: 100%;
    margin-top: 10px;
    justify-content: center;
}

/* Footer */
footer {
    background-color: var(--dark);
    color: var(--text);
    padding: 30px 0;
    border-top: 1px solid var(--border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
    color: var(--secondary);
}

/* Hero Image Desktop */
.hero-image {
    flex: 1;
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-photo {
    width: 100%;
    max-width: 400px; /* ancho máximo de la imagen */
    height: auto; /* mantener proporción */
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    border: 3px solid var(--secondary);
}

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-20px); }
    60% { transform: translateY(-10px); }
}

/* Responsive */
@media (max-width: 768px) {
    .hero-content,
    .about-content,
    .contact-content {
        flex-direction: column;
    }

    .hero-text {
        text-align: center;  /* centra los textos */
        display: flex;
        flex-direction: column;
        align-items: center; /* centra los botones y la bandera */
        gap: 20px; /* espacio entre elementos */
    }   
    
    .hero-content {
        gap: 30px;
    }
    
    .stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .timeline::after {
        left: 31px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
    }
    
    .timeline-item:nth-child(even) {
        left: 0;
    }
    
    /* NAV responsive */
    .nav-links {
        display: none;             /* se oculta por defecto */
        flex-direction: column;
        gap: 20px;
        position: absolute;
        top: 70px;                 /* altura del header */
        right: 20px;
        background-color: var(--dark);
        padding: 20px;
        border-radius: 10px;
        z-index: 1001;
    }

    .nav-links.active {
        display: flex;             /* se muestra al activar */
    }

    .nav-links li {
        margin: 0;
    }

    .hamburger {
        display: block;
        cursor: pointer;
        font-size: 1.8rem;
        color: var(--text);
        background: none;
        border: none;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.2rem;
    }
    
    .education-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    /* Contact Section centrado en móviles */
    .contact-content {
        display: flex;
        flex-direction: column;
        align-items: center;  /* centra horizontalmente */
        justify-content: center;
        gap: 30px; /* espacio entre formulario y info */
    }

    .contact-info {
        text-align: center;
    }

    .contact-items {
        display: flex;
        flex-direction: column;
        align-items: center; /* centra los items de contacto */
        gap: 15px;
    }

    .contact-form {
        width: 100%;
        max-width: 400px; /* limita ancho del formulario */
    }

    .footer-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }

    .hero-photo {
        max-width: 250px; /* más pequeña en móviles */
        width: 100%;
        height: auto;
        margin-top: 30px; /* espacio entre el texto y la foto */
    }

    .hero-image {
        flex: 1;
        text-align: center;
        display: flex;
        align-items: center;
        justify-content: center;
    }
}