/* ===================================
   VARIABLES CSS - Paleta Minimalista
   =================================== */
:root {
    /* Colores base */
    --color-bg: #FAFAFA;
    --color-surface: #FFFFFF;
    --color-text-primary: #1A1A1A;
    --color-text-secondary: #666666;
    --color-accent: #2D2D2D;
    --color-border: #E5E5E5;
    
    /* Tipografía */
    --font-mono: 'IBM Plex Mono', 'Courier New', monospace;
    --font-display: 'Space Mono', monospace;
    
    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Transiciones */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===================================
   RESET & BASE
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-mono);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===================================
   TYPOGRAPHY
   =================================== */
h1, h2, h3 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: clamp(2.5rem, 8vw, 5rem);
}

h2 {
    font-size: clamp(2rem, 5vw, 3rem);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.5rem);
}

p {
    font-size: 1rem;
    line-height: 1.8;
}

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

strong {
    font-weight: 600;
}

/* ===================================
   LAYOUT
   =================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

section {
    padding: var(--spacing-xl) 0;
    position: relative;
}

/* ===================================
   NAVIGATION
   =================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    backdrop-filter: blur(10px);
    background: rgba(250, 250, 250, 0.9);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.05em;
}

.nav-logo:hover {
    opacity: 0.7;
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
}

.nav-link {
    font-size: 0.9rem;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-accent);
    transition: width 0.3s ease;
}

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

/* ===================================
   HERO SECTION
   =================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding-top: var(--spacing-xl);
    overflow: hidden;
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 2;
    animation: fadeInUp 1s ease-out;
}

.hero-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.hero-title {
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.hero-decoration {
    position: absolute;
    top: 20%;
    right: 10%;
    width: 300px;
    height: 300px;
    border: 1px solid var(--color-border);
    border-radius: 50%;
    opacity: 0.3;
    animation: float 6s ease-in-out infinite;
}

/* ===================================
   BUTTONS
   =================================== */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    border: 1px solid var(--color-accent);
    transition: var(--transition);
    cursor: pointer;
}

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

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

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

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

/* ===================================
   SECTION HEADERS
   =================================== */
.section-header {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.section-number {
    font-family: var(--font-display);
    font-size: 1rem;
    color: var(--color-text-secondary);
}

.section-title {
    font-weight: 700;
}

/* ===================================
   ABOUT SECTION
   =================================== */
.about {
    background: var(--color-surface);
}

.about-content {
    max-width: 800px;
}

.about-intro {
    font-size: 1.25rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

.about-text p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* ===================================
   PROJECTS SECTION
   =================================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.project-card {
    border: 1px solid var(--color-border);
    padding: var(--spacing-md);
    background: var(--color-surface);
    transition: var(--transition);
    position: relative;
}

.project-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
}

.project-number {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    font-family: var(--font-display);
    font-size: 0.75rem;
    color: var(--color-text-secondary);
}

.project-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.project-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
    line-height: 1.6;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.tag {
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    border: 1px solid var(--color-border);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.project-links {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.project-link {
    font-size: 0.85rem;
    font-weight: 500;
    position: relative;
}

.project-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-accent);
    transition: width 0.3s ease;
}

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

/* ===================================
   SKILLS SECTION
   =================================== */
.skills {
    background: var(--color-surface);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.skill-category-title {
    font-family: var(--font-display);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-xs);
    border-bottom: 1px solid var(--color-border);
}

.skill-list {
    list-style: none;
}

.skill-list li {
    padding: var(--spacing-xs) 0;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    position: relative;
    padding-left: var(--spacing-sm);
}

.skill-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

.languages {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.languages-title {
    font-family: var(--font-display);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
}

.languages-list {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

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

/* ===================================
   CONTACT SECTION
   =================================== */
.contact-content {
    max-width: 600px;
}

.contact-text {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-secondary);
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1rem;
    padding: var(--spacing-sm);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.contact-link:hover {
    border-color: var(--color-accent);
    background: var(--color-surface);
}

.contact-icon {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.2rem;
    min-width: 30px;
}

/* ===================================
   FOOTER
   =================================== */
.footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-lg) 0;
    text-align: center;
}

.footer-text {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
}

.footer-subtext {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    opacity: 0.7;
}

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

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* ===================================
   RESPONSIVE
   =================================== */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }
    
    .nav-links {
        gap: var(--spacing-sm);
    }
    
    .nav-link {
        font-size: 0.8rem;
    }
    
    .hero {
        min-height: 90vh;
    }
    
    .hero-decoration {
        width: 200px;
        height: 200px;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .languages-list {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
}