:root {
    /* Color Palette */
    --bg-primary: #0a192f;
    --bg-secondary: #112240;
    --bg-tertiary: #233554;
    --text-main: #ccd6f6;
    --text-muted: #8892b0;
    --accent: #0ea5e9; /* Electric Blue */
    --accent-hover: #38bdf8;
    --accent-transparent: rgba(14, 165, 233, 0.1);
    
    /* Typography */
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
}

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

html {
    scroll-behavior: smooth;
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--text-main);
    font-weight: 600;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

ul {
    list-style: none;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 100px 0;
}

.section-title {
    font-size: 2rem;
    margin-bottom: 2.5rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    display: block;
    width: 60%;
    height: 3px;
    background-color: var(--accent);
    margin-top: 8px;
    border-radius: 2px;
}

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

.text-accent {
    color: var(--accent);
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(10, 25, 47, 0.85);
    backdrop-filter: blur(10px);
    z-index: 100;
    padding: 1rem 0;
    transition: var(--transition);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.navbar.scrolled {
    padding: 0.8rem 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    font-family: var(--font-heading);
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-main);
    font-size: 0.9rem;
    font-weight: 500;
}

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

.nav-btn {
    border: 1px solid var(--accent);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    color: var(--accent) !important;
}

.nav-btn:hover {
    background-color: var(--accent-transparent);
}

.hamburger {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--accent);
}

/* Language Toggle */
body.lang-en .lang-es { display: none !important; }
body.lang-es .lang-en { display: none !important; }

.nav-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.lang-toggle-btn {
    background: transparent;
    border: 1px solid var(--accent);
    color: var(--accent);
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
    cursor: pointer;
    font-family: var(--font-heading);
    font-size: 0.9rem;
    transition: var(--transition);
}

.lang-toggle-btn:hover {
    background: var(--accent-transparent);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    padding: 0 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.greeting {
    color: var(--accent);
    font-family: var(--font-body);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.name {
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 0.5rem;
    line-height: 1.1;
}

.title {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.hero-desc {
    color: var(--text-muted);
    max-width: 600px;
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 0.8rem 1.8rem;
    border-radius: 4px;
    font-size: 1rem;
    font-family: var(--font-heading);
    font-weight: 500;
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background-color: transparent;
    color: var(--accent);
    border: 1px solid var(--accent);
}

.btn-primary:hover {
    background-color: var(--accent-transparent);
}

.btn-secondary {
    background-color: var(--accent);
    color: var(--bg-primary);
    border: 1px solid var(--accent);
}

.btn-secondary:hover {
    background-color: var(--accent-hover);
    border-color: var(--accent-hover);
}

/* About Section */
.about-content {
    display: flex;
    gap: 3rem;
    align-items: flex-start;
}

.about-text {
    flex: 1;
    color: var(--text-muted);
}

.about-text p {
    margin-bottom: 1.5rem;
}

.about-info {
    margin-top: 2rem;
    display: grid;
    gap: 1rem;
}

.about-info li {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    color: var(--text-main);
}

.about-info i {
    color: var(--accent);
    width: 20px;
    text-align: center;
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.skill-category {
    background-color: var(--bg-secondary);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 10px 30px -15px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease;
}

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

.skill-category h3 {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-main);
}

.skill-category h3 i {
    color: var(--accent);
}

.skill-items {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.skill-pill {
    background-color: var(--bg-tertiary);
    color: var(--text-main);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border: 1px solid transparent;
    transition: var(--transition);
}

.skill-pill:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* Experience Section */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 20px;
    width: 2px;
    background-color: var(--bg-tertiary);
}

.timeline-item {
    position: relative;
    padding-left: 60px;
    margin-bottom: 3rem;
}

.timeline-dot {
    position: absolute;
    left: 14px;
    top: 5px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background-color: var(--accent);
    border: 3px solid var(--bg-primary);
}

.timeline-content {
    background-color: var(--bg-secondary);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 10px 30px -15px rgba(0, 0, 0, 0.5);
}

.timeline-content h3 {
    font-size: 1.3rem;
    margin-bottom: 0.2rem;
}

.timeline-content .company {
    color: var(--accent);
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.timeline-content .date {
    display: inline-block;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.timeline-content p {
    color: var(--text-muted);
}

/* Timeline CTA */
.timeline-item-cta .timeline-content {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--accent-transparent);
    box-shadow: 0 10px 30px -15px var(--accent);
}

.timeline-item-cta .timeline-dot {
    background-color: var(--bg-primary);
    border: 3px solid var(--accent);
    box-shadow: 0 0 10px var(--accent-transparent);
    animation: pulse 2s infinite;
}

.cta-btn {
    margin-top: 1.5rem;
    display: inline-block;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(14, 165, 233, 0.4);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(14, 165, 233, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(14, 165, 233, 0);
    }
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.project-card {
    background-color: var(--bg-secondary);
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s ease;
    box-shadow: 0 10px 30px -15px rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-10px);
}

.project-content {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.folder-icon {
    font-size: 2.5rem;
    color: var(--accent);
}

.project-links a {
    color: var(--text-main);
    font-size: 1.2rem;
    margin-left: 1rem;
}

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

.project-title {
    font-size: 1.4rem;
    margin-bottom: 1rem;
}

.project-desc {
    color: var(--text-muted);
    margin-bottom: 2rem;
    flex-grow: 1;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    font-family: var(--font-body);
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Contact Section */
.contact {
    max-width: 600px;
    margin: 0 auto;
}

.contact-desc {
    color: var(--text-muted);
    margin-bottom: 3rem;
}

.contact-methods {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.contact-btn {
    padding: 1rem 2rem;
    border-radius: 4px;
    font-family: var(--font-heading);
    font-size: 1rem;
    background-color: transparent;
    border: 1px solid var(--accent);
    color: var(--accent);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.contact-btn:hover {
    background-color: var(--accent-transparent);
}

.linkedin-btn {
    border-color: #0077b5;
    color: #0077b5;
}

.linkedin-btn:hover {
    background-color: rgba(0, 119, 181, 0.1);
}

/* Footer */
footer {
    padding: 2rem 0;
    background-color: var(--bg-secondary);
}

footer p {
    color: var(--text-muted);
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.footer-socials {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.footer-socials a {
    color: var(--text-muted);
    font-size: 1.2rem;
}

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

/* Media Queries */
@media (max-width: 768px) {
    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--bg-secondary);
        flex-direction: column;
        padding: 2rem 0;
        gap: 1.5rem;
        box-shadow: 0 10px 10px rgba(0,0,0,0.2);
        transform: translateY(-150%);
        transition: transform 0.3s ease-in-out;
        z-index: 99;
    }

    .nav-links.active {
        transform: translateY(0);
    }

    .hamburger {
        display: block;
    }

    .hero {
        text-align: left;
    }

    .hero-cta {
        flex-direction: column;
    }

    .section {
        padding: 80px 0;
    }
}