.disabled-link {
    pointer-events: none;
    opacity: 0.5;
    position: relative;
    cursor: not-allowed;
}
.disabled-link .coming-soon {
    display: none;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--secondary-bg);
    color: var(--accent-color);
    font-size: 0.85rem;
    padding: 0.2rem 0.7rem;
    border-radius: var(--radius-sm);
    box-shadow: 0 2px 8px rgba(0,0,0,0.12);
    margin-top: 0.3rem;
    white-space: nowrap;
    z-index: 10;
    font-weight: 600;
    letter-spacing: 0.5px;
}
.disabled-link:hover .coming-soon,
.disabled-link:focus .coming-soon {
    display: block;
}
.highlight-accent {
    color: var(--accent-color);
    font-weight: 700;
    font-style: italic;
    letter-spacing: 0.5px;
    background: none;
}
/* CSS Custom Properties for theming */
:root {
    /* Colors */
    --primary-bg: #1a202c;
    --secondary-bg: #2D3748;
    --tertiary-bg: #4A5568;
    --accent-color: #9F7AEA;
    --accent-hover: #805AD5;
    --text-primary: #FFFFFF;
    --text-secondary: #E2E8F0;
    --text-muted: #A0AEC0;
    --border-color: #4A5568;
    --shadow-color: rgba(0, 0, 0, 0.2);
    --gradient-purple: linear-gradient(135deg, #9F7AEA 0%, #805AD5 100%);
    
    /* Typography */
    --font-primary: 'Lato', sans-serif;
    --font-heading: 'Merriweather', serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 2.5rem;
    
    /* Border radius */
    --radius-sm: 5px;
    --radius-md: 10px;
    --radius-lg: 15px;
    --radius-full: 50%;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Light theme variables */
.light-theme {
    --primary-bg: #f7fafc;
    --secondary-bg: #ffffff;
    --tertiary-bg: #e2e8f0;
    --text-primary: #1a202c;
    --text-secondary: #2d3748;
    --text-muted: #4a5568;
    --border-color: #e2e8f0;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--primary-bg);
    color: var(--text-secondary);
    line-height: 1.6;
    min-height: 100vh;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--primary-bg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity var(--transition-slow);
}

.loading-screen.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--accent-color);
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-md);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Main Content */
.main-content {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: var(--spacing-xl);
}

/* VCard Container */
.vcard {
    background-color: var(--secondary-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    max-width: 900px;
    width: 100%;
    text-align: center;
    box-shadow: 0 20px 40px var(--shadow-color);
    border: 1px solid var(--border-color);
    position: relative;
    animation: fadeInUp 0.8s ease-out;
}

.vcard::before {
    /* Línea decorativa superior eliminada */
}

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

/* Profile Picture */
.profile-picture-container {
    position: relative;
    display: inline-block;
    margin-bottom: var(--spacing-lg);
}

.profile-picture {
    width: 180px;
    height: 180px;
    border-radius: var(--radius-full);
    border: 5px solid var(--accent-color);
    object-fit: cover;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.profile-picture:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(159, 122, 234, 0.3);
}

.profile-picture-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(159, 122, 234, 0.8);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.profile-picture-container:hover .profile-picture-overlay {
    opacity: 1;
}

.profile-picture-overlay i {
    color: white;
    font-size: 2rem;
}

/* Profile Header */
.profile-header {
    margin-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: var(--spacing-lg);
}

.name {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3rem);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-purple);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title {
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--text-muted);
    letter-spacing: 1px;
}

/* Mission Section */
.mission-section {
    margin-bottom: var(--spacing-xl);
}

.mission {
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--text-secondary);
    max-width: 650px;
    margin: 0 auto;
    font-style: italic;
    position: relative;
    padding: 1.5rem 1.5rem 1.5rem 2.5rem;
}

.mission::before,
.mission-section {
    margin-bottom: 1.5rem;
}
.mission-quote {
    width: 100%;
    font-size: 1.08rem;
    font-family: 'Lato', Arial, sans-serif;
    color: var(--text-color);
    background: linear-gradient(120deg, rgba(159,122,234,0.07) 0%, rgba(45,55,72,0.07) 100%);
    border-radius: 1rem;
    padding: 1.1rem 1.3rem 1rem 1.3rem;
    box-shadow: 0 2px 10px 0 rgba(159,122,234,0.07), 0 1px 4px 0 rgba(0,0,0,0.06);
    margin: 0 auto 1.5rem auto;
    max-width: 100%;
    text-align: center;
    line-height: 1.5;
    border-left: 4px solid var(--accent-color);
    border-right: 4px solid var(--accent-color);
    position: relative;
    transition: box-shadow 0.2s;
}
.mission-quote:before {
    content: '\201C';
    font-size: 2.2rem;
    color: var(--accent-color);
    position: absolute;
    left: 0.7rem;
    top: 0.2rem;
    opacity: 0.18;
}
.mission-quote:after {
    content: '\201D';
    font-size: 2.2rem;
    color: var(--accent-color);
    position: absolute;
    right: 0.7rem;
    bottom: 0.2rem;
    opacity: 0.18;
}
.mission-quote .highlight-accent {
    color: var(--accent-color);
    font-weight: 700;
    font-family: 'Merriweather', serif;
    font-size: 1.08em;
}
.mission-main {
    display: block;
    font-size: 1em;
    font-family: 'Lato', Arial, sans-serif;
    color: var(--text-color);
    margin: 0.4em 0 0.1em 0;
    font-weight: 400;
}
.mission-secondary {
    display: block;
    font-size: 1em;
    color: var(--text-color);
    font-style: italic;
    margin-top: 0.3em;
}

.section-heading::after {
    /* Línea decorativa inferior eliminada */
}

.section-heading i {
    color: var(--accent-color);
}

/* Projects Section */
.projects-section {
    margin-bottom: var(--spacing-xl);
}

.projects-grid {
    display: grid;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.project {
    background-color: var(--primary-bg);
    padding: var(--spacing-xl);
    border-radius: var(--radius-md);
    text-align: left;
    border: 1px solid var(--border-color);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
    position: relative;
    will-change: transform;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
}

.project:hover, .project:focus {
    transform: scale(1.02);
    box-shadow: 0 12px 35px var(--shadow-color);
    border-color: var(--accent-color);
    text-decoration: none;
    color: inherit;
}

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

.project-title {
    font-weight: 700;
    color: var(--text-primary);
    font-size: 1.3rem;
    margin: 0;
}

.project-title a {
    color: inherit;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: color var(--transition-normal);
}

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

.project-title a i {
    font-size: 0.9rem;
    opacity: 0.7;
    transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.project-title a:hover i {
    opacity: 1;
    transform: translateX(3px);
}

.project-status {
    display: flex;
    gap: var(--spacing-xs);
}

.status-badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-badge.active {
    background-color: rgba(76, 175, 80, 0.2);
    color: #4CAF50;
}

.status-badge.development {
    background-color: rgba(255, 193, 7, 0.2);
    color: #FFC107;
}

.project-description {
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

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

.tag {
    background-color: rgba(159, 122, 234, 0.2);
    color: var(--accent-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
}

/* Expertise Section */
.expertise-section {
    margin-bottom: var(--spacing-xl);
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    justify-items: center;
}

.expertise-item {
    text-align: center;
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    background-color: var(--primary-bg);
    border: 1px solid var(--border-color);
    transition: transform var(--transition-normal), background-color var(--transition-normal);
}

.expertise-item:hover {
    transform: translateY(-3px);
    background-color: var(--tertiary-bg);
}

.expertise-item i {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: var(--spacing-md);
}

.expertise-item h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 1.1rem;
}

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

/* Status Section */
.status-section {
    margin-bottom: var(--spacing-xl);
}

.status {
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(159, 122, 234, 0.1) 0%, rgba(128, 90, 213, 0.1) 100%);
    border-left: 4px solid var(--accent-color);
    border-radius: var(--radius-sm);
    font-style: italic;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-align: left;
}

.status i {
    color: var(--accent-color);
    font-size: 1.2rem;
}

/* Contact Section */
.contact-section {
    margin-bottom: var(--spacing-xl);
}

.contact-section .contact-line {
    text-align: center;
    font-size: 1.05rem;
    color: var(--text-primary);
    background: linear-gradient(90deg, rgba(159,122,234,0.06), rgba(232,121,249,0.03));
    padding: calc(var(--spacing-sm) / 2) var(--spacing-md);
    border-radius: var(--radius-sm);
    display: inline-block;
    margin-top: var(--spacing-md);
}

.contact-section .contact-line a {
    color: var(--accent-color);
    font-weight: 600;
    text-decoration: none;
}

.contact-section .contact-line a:hover,
.contact-section .contact-line a:focus {
    text-decoration: underline;
    outline: none;
}

.contact-section .mail-icon {
    margin-right: 0.5rem;
    font-size: 0.95rem;
    vertical-align: middle;
}

.social-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.social-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    min-width: 80px;
}

.social-link:hover {
    color: var(--accent-color);
    transform: translateY(-3px);
    background-color: rgba(159, 122, 234, 0.1);
}

.social-link i {
    font-size: 2rem;
}

.social-link span {
    font-size: 0.9rem;
    font-weight: 500;
}

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--accent-color);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.2rem;
    box-shadow: 0 4px 12px rgba(159, 122, 234, 0.3);
    transition: all var(--transition-normal);
    z-index: 1000;
}

.theme-toggle:hover {
    background: var(--accent-hover);
    transform: scale(1.1);
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--accent-color);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.2rem;
    box-shadow: 0 4px 12px rgba(159, 122, 234, 0.3);
    transition: all var(--transition-normal);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--accent-hover);
    transform: scale(1.1);
}

/* Footer */
.footer {
    text-align: center;
    padding: var(--spacing-xl);
    background-color: var(--secondary-bg);
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-2xl);
}

.footer p {
    color: var(--text-muted);
    margin-bottom: var(--spacing-xs);
}

/* Responsive Design */
@media (max-width: 768px) {
    .main-content {
        padding: var(--spacing-md);
    }
    
    .vcard {
        padding: var(--spacing-lg);
    }
    
    .name {
        font-size: 2rem;
    }
    
    .title {
        font-size: 1.2rem;
    }
    
    .mission::before,
    .mission::after {
        display: none;
    }
    
    .project-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .expertise-grid {
        grid-template-columns: 1fr;
    }
    
    .social-links {
        gap: var(--spacing-md);
    }
    
    .social-link {
        min-width: 60px;
        padding: var(--spacing-sm);
    }
    
    .theme-toggle,
    .back-to-top {
        width: 45px;
        height: 45px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .profile-picture {
        width: 120px;
        height: 120px;
    }
    
    .mission {
        font-size: 1rem;
    }
    
    .section-heading {
        font-size: 1.5rem;
    }
    
    .social-links {
        flex-direction: column;
        align-items: center;
    }
    
    .social-link {
        flex-direction: row;
        justify-content: center;
        width: 100%;
        max-width: 200px;
    }
}

/* Print Styles */
@media print {
    .theme-toggle,
    .back-to-top,
    .loading-screen {
        display: none !important;
    }
    
    .vcard {
        box-shadow: none;
        border: 1px solid #000;
    }
    
    .social-link {
        color: #000 !important;
    }
}

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

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --border-color: #ffffff;
        --shadow-color: rgba(0, 0, 0, 0.5);
    }
    
    .vcard {
        border: 2px solid var(--accent-color);
    }
}