/* Reset and CSS Variables */
:root {
    /* Colors */
    --bg-color: #0a0e1a; /* Dark theme background */
    --bg-card: #111827; /* Slightly lighter background for cards/sections */
    --text-main: #e2e8f0; /* Soft white for readability */
    --text-muted: #94a3b8; /* Gray text for secondary info */
    
    --accent-green: #00FF41; /* Terminal green */
    --accent-green-glow: rgba(0, 255, 65, 0.4);
    
    --accent-blue: #0066FF; /* Electric blue */
    --accent-blue-glow: rgba(0, 102, 255, 0.4);
    
    --border-color: rgba(255, 255, 255, 0.1);

    /* Typography */
    --font-main: 'Inter', sans-serif;
    --font-code: 'JetBrains Mono', monospace;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-norm: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

/* Typography elements */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: #ffffff;
}

a {
    color: var(--accent-green);
    text-decoration: none;
    transition: var(--transition-norm);
}

a:hover {
    color: var(--accent-blue);
    text-shadow: 0 0 8px var(--accent-blue-glow);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Utilities */
.section {
    padding: 100px 0;
    position: relative;
}

.section-title {
    font-family: var(--font-code);
    font-size: 2.5rem;
    margin-bottom: 3rem;
    display: inline-block;
}

.terminal-prefix {
    color: var(--accent-green);
    margin-right: 0.5rem;
}

.fade-in-section {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
    will-change: opacity, transform;
}

.fade-in-section.is-visible {
    opacity: 1;
    transform: none;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    font-family: var(--font-code);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-norm);
    border: 1px solid transparent;
}

.btn-primary {
    background-color: transparent;
    color: var(--accent-green);
    border-color: var(--accent-green);
    box-shadow: 0 0 10px rgba(0, 255, 65, 0.1);
}

.btn-primary:hover {
    background-color: var(--accent-green);
    color: var(--bg-color);
    box-shadow: 0 0 20px var(--accent-green-glow);
}

.btn-outline {
    background-color: transparent;
    color: var(--accent-blue);
    border-color: var(--accent-blue);
}

.btn-outline:hover {
    background-color: rgba(0, 102, 255, 0.1);
    box-shadow: 0 0 15px var(--accent-blue-glow);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(10, 14, 26, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-norm);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-family: var(--font-code);
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
    display: flex;
    align-items: center;
}

.logo:hover {
    color: #ffffff;
    text-shadow: none;
}

.logo-term {
    color: var(--accent-green);
    margin-right: 0.2rem;
}

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

.nav-link {
    color: var(--text-main);
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--accent-green);
    transition: width var(--transition-norm);
}

.nav-link:hover {
    color: var(--accent-green);
    text-shadow: none;
}

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

.nav-link.active {
    color: var(--accent-green);
}

.nav-link.active::after {
    width: 100%;
}

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

.btn-contact::after {
    display: none;
}

.btn-contact:hover {
    background-color: var(--accent-blue);
    color: var(--bg-color);
    box-shadow: 0 0 15px var(--accent-blue-glow);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-main);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    padding-top: 80px; /* offset for navbar */
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 800px;
    z-index: 10;
    position: relative;
}

.hero-greeting {
    font-family: var(--font-code);
    color: var(--accent-green);
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.hero-title {
    font-size: clamp(3rem, 8vw, 5rem);
    margin-bottom: 1rem;
    color: #ffffff;
}

.cursor-blink {
    animation: blink 1s step-end infinite;
    color: var(--accent-green);
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.hero-subtitle-wrapper {
    font-family: var(--font-code);
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    color: var(--text-main);
    margin-bottom: 2rem;
    background-color: rgba(0,0,0,0.3);
    padding: 1rem 1.2rem;
    border-radius: 4px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    border-left: 3px solid var(--accent-green);
    min-height: 110px;
    width: 100%;
    max-width: 550px;
}

.terminal-prompt {
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.typing-container {
    display: flex;
    align-items: center;
    min-height: 2.5rem;
    white-space: nowrap;
    overflow: hidden;
}

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

.hero-description {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 600px;
}

.hero-description strong {
    color: var(--text-main);
}

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

/* Footer Section */
.footer {
    background-color: var(--bg-card);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.footer-content p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-social {
    display: flex;
    gap: 1.5rem;
}

.footer-social a {
    color: var(--text-main);
    font-size: 1.2rem;
    border: 1px solid var(--border-color);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition-norm);
}

.footer-social a:hover {
    color: var(--accent-green);
    border-color: var(--accent-green);
    box-shadow: 0 0 10px var(--accent-green-glow);
    transform: translateY(-3px);
}

/* Particles Background */
#particles-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: 0.4;
}

/* Sobre Mí Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

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

.about-highlights {
    list-style: none;
    margin-top: 2rem;
}

.about-highlights li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    color: var(--text-main);
}

.about-highlights i {
    color: var(--accent-green);
    margin-right: 1rem;
    font-size: 1.2rem;
}

.terminal-window {
    background-color: #000;
    border-radius: 8px;
    border: 1px solid #333;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    font-family: var(--font-code);
}

.terminal-header {
    background-color: #1a1b26;
    padding: 0.5rem 1rem;
    display: flex;
    align-items: center;
    border-bottom: 1px solid #333;
}

.terminal-header .dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: 8px;
    display: inline-block;
}

.terminal-header .red { background-color: #ff5f56; }
.terminal-header .yellow { background-color: #ffbd2e; }
.terminal-header .green { background-color: #27c93f; }

.terminal-header .title {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-left: auto;
    margin-right: auto;
}

.terminal-body {
    padding: 1.5rem;
    color: #a9b1d6;
    font-size: 0.95rem;
    line-height: 1.5;
}

.terminal-body .prompt {
    color: var(--accent-green);
}

.terminal-body .success {
    color: var(--accent-green);
}

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

.service-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2.5rem 2rem;
    transition: var(--transition-norm);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-green));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-norm);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    border-color: rgba(0, 255, 65, 0.2);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    font-size: 2.5rem;
    color: var(--accent-blue);
    margin-bottom: 1.5rem;
    transition: var(--transition-norm);
}

.service-card:hover .service-icon {
    color: var(--accent-green);
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-family: var(--font-code);
}

.service-card p {
    color: var(--text-muted);
    font-size: 1rem;
    line-height: 1.6;
}

/* Stack Section */
.stack-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.stack-category {
    background-color: rgba(17, 24, 39, 0.5);
    border: 1px dashed rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 8px;
    transition: var(--transition-norm);
}

.stack-category:hover {
    border-color: var(--accent-green);
    background-color: rgba(17, 24, 39, 0.8);
}

.stack-category h3 {
    font-size: 1.2rem;
    color: var(--text-main);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

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

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.tech-tag, .custom-tags span {
    background-color: rgba(0, 102, 255, 0.1);
    color: var(--accent-blue);
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
    font-size: 0.85rem;
    font-family: var(--font-code);
    border: 1px solid rgba(0, 102, 255, 0.2);
    transition: var(--transition-short);
}

.tech-tag:hover, .custom-tags span:hover {
    background-color: rgba(0, 255, 65, 0.1);
    color: var(--accent-green);
    border-color: rgba(0, 255, 65, 0.3);
}

/* Proyectos Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.project-card {
    background-color: var(--bg-card);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition-norm);
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 255, 65, 0.1);
    border-color: var(--accent-green);
}

.project-content {
    padding: 2.5rem 2rem;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.project-category {
    font-family: var(--font-code);
    color: var(--accent-green);
    font-size: 0.85rem;
    display: inline-block;
    margin-bottom: 0.5rem;
}

.project-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #fff;
}

.project-card p {
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    flex-grow: 1; /* Pushes tags to the bottom */
}

.custom-tags {
    margin-top: auto;
}

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-main);
}

.contact-info p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.contact-method i {
    font-size: 1.5rem;
    color: var(--accent-green);
    background-color: rgba(0, 255, 65, 0.1);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    border: 1px solid rgba(0, 255, 65, 0.2);
    transition: var(--transition-norm);
}

.contact-method:hover i {
    background-color: var(--accent-green);
    color: var(--bg-color);
    box-shadow: 0 0 15px var(--accent-green-glow);
}

.contact-method h4 {
    margin-bottom: 0.2rem;
    font-family: var(--font-code);
    font-size: 1rem;
}

.contact-method p {
    margin-bottom: 0;
    font-size: 0.95rem;
    color: var(--text-muted);
}

.contact-form-container {
    background-color: var(--bg-card);
    padding: 2.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.contact-form .form-group {
    margin-bottom: 1.5rem;
}

.contact-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-family: var(--font-code);
    color: var(--accent-blue);
    font-size: 0.9rem;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 0.8rem 1rem;
    background-color: rgba(10, 14, 26, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    color: var(--text-main);
    font-family: var(--font-main);
    transition: var(--transition-norm);
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent-green);
    box-shadow: 0 0 10px rgba(0, 255, 65, 0.1);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: rgba(255, 255, 255, 0.2);
}

.w-100 {
    width: 100%;
    margin-top: 1rem;
}

/* Media Queries for Responsiveness */
@media (max-width: 900px) {
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    
    .nav-links {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: var(--bg-color);
        flex-direction: column;
        justify-content: center;
        gap: 2.5rem;
        transition: left var(--transition-norm);
        z-index: 999;
    }
    
    .nav-links.nav-active {
        left: 0;
    }
    
    .nav-link {
        font-size: 1.2rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-subtitle-wrapper {
        font-size: 0.95rem; /* Slightly smaller for mobile phones to fit string */
        padding: 0.8rem 1rem;
    }
}