.card-content ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.card-content li {
    padding-left: 24px;
    position: relative;
    margin-bottom: 10px;
    color: #333;
    font-size: 14px;
}

.card-content li::before {
    content: "✔";
    position: absolute;
    left: 0;
    color: #4CAF50; /* verde profesional */
    font-size: 14px;
}


/* Reset y Variables */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-gray: #f1f5f9;
    --border-color: #e5e7eb;
    --success-color: #059669;
    --success-bg: #d1fae5;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --border-radius: 0.5rem;
    --border-radius-lg: 0.75rem;
    --transition: all 0.3s ease;
    --max-width: 1200px;
    
    /* Espaciado responsivo */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
}

/* Base Styles */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
    font-size: 16px;
}

/* Mejorar tamaño de fuente en móviles pequeños */
@media (max-width: 375px) {
    html {
        font-size: 14px;
    }
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-gray) 100%);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Mejorar padding en móviles */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
}

/* Header */
.header {
    position: sticky;
    top: 0;
    z-index: 50;
    width: 100%;
    border-bottom: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
    min-height: 60px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.icon-code {
    color: var(--primary-color);
    width: 24px;
    height: 24px;
}

.brand-text {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Mejorar navegación móvil */
.nav-links {
    display: none;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
}

.nav-link:hover {
    color: var(--primary-color);
    background: var(--bg-secondary);
}

.mobile-menu-btn {
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.mobile-menu-btn:hover {
    background: var(--bg-secondary);
}

.mobile-menu-btn span {
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding: var(--spacing-3xl) 0;
    text-align: center;
}

/* Reducir padding en móviles */
@media (max-width: 768px) {
    .hero {
        padding: var(--spacing-xl) 0;
    }
}

.hero-content {
    max-width: 64rem;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(2rem, 8vw, 4.5rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
    letter-spacing: -0.02em;
}

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

.hero-subtitle {
    font-size: clamp(1.125rem, 4vw, 1.875rem);
    font-weight: 300;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    letter-spacing: 0.02em;
}

.hero-description {
    font-size: clamp(1rem, 2.5vw, 1.125rem);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 42rem;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    justify-content: center;
    align-items: center;
}

/* Botones horizontales en pantallas más grandes */
@media (min-width: 480px) {
    .hero-buttons {
        flex-direction: row;
        flex-wrap: wrap;
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--border-radius);
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    min-width: 140px;
    justify-content: center;
    white-space: nowrap;
    /* Mejorar área táctil en móviles */
    min-height: 44px;
}

/* Botones más grandes en móviles */
@media (max-width: 480px) {
    .btn {
        width: 100%;
        max-width: 280px;
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: 1.125rem;
    }
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

/* Sections */
.section {
    padding: var(--spacing-3xl) 0;
}

/* Reducir padding en móviles */
@media (max-width: 768px) {
    .section {
        padding: var(--spacing-xl) 0;
    }
}

.section-white {
    background: var(--bg-primary);
}

.section-gray {
    background: var(--bg-gray);
}

.section-content {
    max-width: 64rem;
    margin: 0 auto;
}

.section-header {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    gap: var(--spacing-sm);
}

/* Stack header en móviles muy pequeños */
@media (max-width: 375px) {
    .section-header {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-xs);
    }
}

.section-icon {
    color: var(--primary-color);
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.section-title {
    font-size: clamp(1.5rem, 4vw, 1.875rem);
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

/* Cards */
.card {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    overflow: hidden;
    height: 100%;
}

.card-hover {
    transition: var(--transition);
}

.card-hover:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

/* Reducir hover effects en dispositivos táctiles */
@media (hover: none) {
    .card-hover:hover {
        transform: none;
        box-shadow: var(--shadow-sm);
    }
}

.card-header {
    padding: var(--spacing-lg) var(--spacing-lg) 0 var(--spacing-lg);
}

.card-content {
    padding: 0 var(--spacing-lg) var(--spacing-lg) var(--spacing-lg);
}

.card-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.card-icon {
    color: var(--primary-color);
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

/* Grid Layouts */
.cards-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

/* Responsive grids */
@media (min-width: 480px) {
    .skills-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 640px) {
    .skills-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (min-width: 768px) {
    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .cards-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Contact Items */
.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-xs);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.contact-item:hover {
    background: var(--bg-secondary);
}

.contact-icon {
    color: var(--text-muted);
    flex-shrink: 0;
    width: 20px;
    height: 20px;
}

/* Languages */
.language-item {
    margin-bottom: var(--spacing-lg);
}

.language-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xs);
}

.language-name {
    font-weight: 500;
    font-size: 0.925rem;
}

.language-percent {
    font-size: 0.825rem;
    color: var(--text-muted);
}

.progress-bar {
    width: 100%;
    height: 0.5rem;
    background: var(--border-color);
    border-radius: 9999px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-hover));
    border-radius: 9999px;
    transition: width 1s ease-in-out;
}

/* Experience */
.experience-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-xs);
    gap: var(--spacing-md);
}

/* Stack experience header en móviles */
@media (max-width: 640px) {
    .experience-header {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
}

.experience-company {
    font-size: clamp(1.125rem, 3vw, 1.25rem);
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.experience-position {
    font-size: clamp(1rem, 2.5vw, 1.125rem);
    font-weight: 500;
    color: var(--text-secondary);
    margin: 0;
}

.experience-period {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
    white-space: nowrap;
}

@media (max-width: 640px) {
    .experience-period {
        white-space: normal;
    }
}

.experience-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
    font-size: 0.95rem;
}

.experience-reference {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Skills */
.skill-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
}

.skill-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

/* Reducir hover effects en dispositivos táctiles */
@media (hover: none) {
    .skill-card:hover {
        transform: none;
    }
}

.skill-icon {
    color: var(--primary-color);
    width: 32px;
    height: 32px;
}

.skill-name {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.875rem;
    margin-bottom: 0;
}

.skill-badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 9999px;
    color: var(--text-muted);
    background: var(--bg-secondary);
}

/* Education */
.education-title {
    color: var(--primary-color);
    font-size: clamp(1rem, 2.5vw, 1.125rem);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.education-subtitle {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 0.95rem;
}

.education-badges {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.education-detail {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 9999px;
    border: 1px solid transparent;
}

.badge-success {
    background: var(--success-bg);
    color: var(--success-color);
}

.badge-outline {
    border-color: var(--border-color);
    color: var(--text-muted);
    background: transparent;
}

/* Contact */
.text-center {
    text-align: center;
}

.contact-description {
    font-size: clamp(1rem, 2.5vw, 1.125rem);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.contact-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: center;
}

@media (min-width: 480px) {
    .contact-buttons {
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
    }
}

/* Footer */
.footer {
    background: var(--text-primary);
    color: white;
    padding: var(--spacing-xl) 0;
}

.footer-content {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    gap: var(--spacing-md);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.footer-icon {
    color: white;
    width: 20px;
    height: 20px;
}

.footer-name {
    font-weight: 500;
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    justify-content: center;
}

.footer-social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    color: white;
    border-radius: var(--border-radius);
    transition: var(--transition);
    text-decoration: none;
}

.footer-social-link:hover {
    color: var(--primary-color);
    background: rgba(255, 255, 255, 0.1);
}

.footer-separator {
    height: 1px;
    background: #374151;
    margin: var(--spacing-md) 0;
}

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

.footer-copyright p {
    font-size: 0.875rem;
    color: #9ca3af;
    margin: 0;
}

/* Media Queries Organizadas */

/* Móviles pequeños (320px - 480px) */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero {
        padding: var(--spacing-xl) 0;
    }
    
    .section {
        padding: var(--spacing-xl) 0;
    }
    
    .nav {
        padding: var(--spacing-sm) 0;
    }
    
    .brand-text {
        font-size: 1rem;
    }
}

/* Móviles (480px - 768px) */
@media (min-width: 480px) and (max-width: 767px) {
    .hero-buttons {
        flex-direction: row;
        flex-wrap: wrap;
    }
    
    .contact-buttons {
        flex-direction: row;
        flex-wrap: wrap;
    }
}

/* Tablets (768px - 1024px) */
@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: none;
    }
    
    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        flex-direction: row;
    }
    
    .container {
        padding: 0 var(--spacing-lg);
    }
}

/* Desktop (1024px+) */
@media (min-width: 1024px) {
    .container {
        padding: 0 var(--spacing-xl);
    }
    
    .hero {
        padding: 6rem 0;
    }
    
    .section {
        padding: 5rem 0;
    }
    
    .cards-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Pantallas grandes (1200px+) */
@media (min-width: 1200px) {
    .hero {
        padding: 8rem 0;
    }
    
    .section {
        padding: 6rem 0;
    }
}

/* Animation for progress bars */
@keyframes fillProgress {
    from {
        width: 0;
    }
    to {
        width: var(--target-width);
    }
}

/* Mejoras de accesibilidad */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Mantener colores originales - modo oscuro removido */