/* ============================================
   Variables CSS
   ============================================ */
:root {
    --color-bg: #0a0a0a;
    --color-bg-secondary: #111111;
    --color-bg-card: #1a1a1a;
    --color-primary: #6366f1;
    --color-primary-light: #818cf8;
    --color-secondary: #22d3ee;
    --color-accent: #f472b6;
    --color-text: #ffffff;
    --color-text-muted: #a1a1aa;
    --color-border: #27272a;
    --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    --gradient-accent: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    --font-primary: 'Space Grotesk', sans-serif;
    --font-secondary: 'Inter', sans-serif;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --border-radius: 12px;
    --border-radius-lg: 20px;
}

/* ============================================
   Reset y Base
   ============================================ */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth; /* Restaurado para scroll normal */
    font-size: 16px;
}

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

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, #f472b6 0%, #6366f1 50%, #22d3ee 100%);
    border-radius: 6px;
    border: 2px solid var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, #f472b6 0%, #818cf8 50%, #22d3ee 100%);
    box-shadow: 0 0 10px rgba(244, 114, 182, 0.5);
}

/* Firefox Scrollbar */
* {
    scrollbar-width: thin;
    scrollbar-color: #6366f1 var(--color-bg-secondary);
}

/* Smooth Scroll Wrapper */
#smooth-wrapper {
    overflow: hidden;
}

#smooth-content {
    overflow: visible;
}

/* Scroll Progress Bar */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #f472b6 0%, #6366f1 50%, #22d3ee 100%);
    transform-origin: 0%;
    transform: scaleX(0);
    z-index: 10001;
    box-shadow: 0 0 15px rgba(244, 114, 182, 0.6), 0 0 30px rgba(99, 102, 241, 0.4);
}

a {
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

button {
    cursor: pointer;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Cursor personalizado eliminado. Se usa solo el canvas fluido (#fluid). */

/* ============================================
   Partículas de Fondo
   ============================================ */
#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

/* Canvas del cursor fluido (WebGL) */
#fluid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none; /* no bloquear clics/scroll */
    z-index: 0; /* por detrás del contenido */
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--color-primary);
    border-radius: 50%;
    opacity: 0.3;
}

/* ============================================
   Navegación
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    padding: 15px 0;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 4px;
    font-family: var(--font-primary);
    font-size: 1.8rem;
    font-weight: 700;
}

.logo-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-dot {
    width: 8px;
    height: 8px;
    background: var(--color-secondary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.7; }
}

.nav-links {
    display: flex;
    gap: 40px;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
    padding: 5px 0;
    transition: var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-normal);
}

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

.nav-link:hover {
    color: var(--color-primary-light);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    padding: 5px;
}

.menu-toggle span {
    width: 25px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition-normal);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 100px 0;
    overflow: hidden;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text {
    z-index: 1;
}

.hero-greeting {
    font-size: 1.2rem;
    color: var(--color-primary-light);
    margin-bottom: 10px;
    font-weight: 500;
}

.hero-title {
    font-family: var(--font-primary);
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 20px;
}

.title-line {
    display: block;
    overflow: hidden;
}

.title-line:last-child {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-role {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 25px;
    font-size: 1.1rem;
}

.role-text {
    color: var(--color-text-muted);
}

.role-divider {
    color: var(--color-primary);
}

.hero-description {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    max-width: 500px;
    margin-bottom: 35px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

/* Botones */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 30px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    border: none;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4);
}

.btn-primary i {
    transition: var(--transition-normal);
}

.btn-primary:hover i {
    transform: translateX(5px);
}

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

.btn-secondary:hover {
    border-color: var(--color-primary);
    background: rgba(99, 102, 241, 0.1);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* Hero Visual */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.visual-container {
    position: relative;
    width: 400px;
    height: 400px;
}

.visual-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    border: 1px solid var(--color-border);
}

.visual-ring:nth-child(1) {
    width: 100%;
    height: 100%;
    animation: rotate 20s linear infinite;
}

.visual-ring:nth-child(2) {
    width: 80%;
    height: 80%;
    animation: rotate 15s linear infinite reverse;
}

.visual-ring:nth-child(3) {
    width: 60%;
    height: 60%;
    animation: rotate 10s linear infinite;
}

@keyframes rotate {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.profile-image {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--color-primary);
    box-shadow: 0 0 50px rgba(99, 102, 241, 0.3);
}

.profile-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-primary), transparent);
    animation: scrollLine 2s ease infinite;
}

@keyframes scrollLine {
    0% { transform: scaleY(0); transform-origin: top; }
    50% { transform: scaleY(1); transform-origin: top; }
    51% { transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ============================================
   Secciones Comunes
   ============================================ */
section {
    padding: 100px 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid var(--color-primary);
    border-radius: 50px;
    color: var(--color-primary-light);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 15px;
}

.section-title {
    font-family: var(--font-primary);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
}

/* ============================================
   About Section
   ============================================ */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-intro {
    font-size: 1.3rem;
    color: var(--color-text);
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-text p {
    color: var(--color-text-muted);
    margin-bottom: 15px;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid var(--color-border);
}

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

.stat-number {
    display: block;
    font-family: var(--font-primary);
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-top: 5px;
}

.about-image {
    position: relative;
}

.image-frame {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

/* Reduce ligeramente el tamaño de la segunda imagen (About) en desktop */
.about-image .image-frame {
    width: 85%;
    max-width: 380px;
    margin: 0 auto;
}

.frame-decoration {
    position: absolute;
    top: -20px;
    right: -20px;
    width: 100%;
    height: 100%;
    border: 2px solid var(--color-primary);
    border-radius: var(--border-radius-lg);
    z-index: -1;
}

.image-frame img {
    border-radius: var(--border-radius-lg);
    filter: grayscale(20%);
    transition: var(--transition-normal);
}

.image-frame:hover img {
    filter: grayscale(0%);
}

/* ============================================
   Skills Section
   ============================================ */
.skills {
    background: var(--color-bg-secondary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.skill-card {
    background: #1a1a1a !important;
    border: 1px solid #27272a !important;
    border-radius: var(--border-radius);
    padding: 30px 25px;
    text-align: center;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.skill-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition-normal);
}

.skill-card:hover {
    transform: translateY(-10px);
    border-color: #6366f1 !important;
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.2);
}

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

.skill-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(99, 102, 241, 0.1);
    font-size: 2rem;
    color: var(--color-primary-light);
    transition: var(--transition-normal);
}

.skill-card:hover .skill-icon {
    background: var(--gradient-primary);
    color: white;
    transform: scale(1.1);
}

.skill-card h3 {
    font-family: var(--font-primary);
    font-size: 1.1rem;
    margin-bottom: 15px;
}

.skill-bar {
    width: 100%;
    height: 6px;
    background: var(--color-border);
    border-radius: 3px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 3px;
    width: 0;
    transition: width 1s ease;
}

/* ============================================
   Projects Section
   ============================================ */
.projects {
    background: var(--color-bg);
    position: relative;
    overflow: hidden;
}

.projects-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.projects-particles .particle {
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--color-primary);
    border-radius: 50%;
    opacity: 0.15;
    box-shadow: 0 0 15px var(--color-primary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    position: relative;
    z-index: 2;
}

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

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
    border-color: var(--color-primary);
}

.project-image {
    position: relative;
    height: 220px;
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg) 100%);
    overflow: hidden;
}

.project-placeholder {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 4rem;
    color: var(--color-border);
    transition: var(--transition-normal);
}

.project-card:hover .project-placeholder {
    color: var(--color-primary);
    transform: translate(-50%, -50%) scale(1.1);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(99, 102, 241, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    opacity: 0;
    transition: var(--transition-normal);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-link {
    width: 50px;
    height: 50px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: 1.2rem;
    transform: translateY(20px);
    opacity: 0;
    transition: var(--transition-normal);
}

.project-card:hover .project-link {
    transform: translateY(0);
    opacity: 1;
}

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

.project-info {
    padding: 25px;
}

.project-category {
    display: inline-block;
    padding: 5px 12px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 20px;
    color: var(--color-primary-light);
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 12px;
}

.project-info h3 {
    font-family: var(--font-primary);
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.project-info p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    margin-bottom: 15px;
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.project-tech span {
    padding: 5px 12px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* ============================================
   Certificates Section
   ============================================ */
.certificates {
    background: var(--color-bg-secondary);
}

.certificates-slider {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

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

.certificate-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.2);
    border-color: var(--color-primary);
}

.certificate-image {
    height: 180px;
    overflow: hidden;
    background: white;
    padding: 10px;
}

.certificate-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: var(--transition-normal);
}

.certificate-card:hover .certificate-image img {
    transform: scale(1.05);
}

.certificate-info {
    padding: 20px;
    text-align: center;
}

.certificate-info h3 {
    font-family: var(--font-primary);
    font-size: 1rem;
    margin-bottom: 8px;
    color: var(--color-text);
}

.certificate-info p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* ============================================
   Contact Section
   ============================================ */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h3 {
    font-family: var(--font-primary);
    font-size: 2rem;
    margin-bottom: 20px;
}

.contact-info > p {
    color: var(--color-text-muted);
    margin-bottom: 30px;
    line-height: 1.8;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 50%;
    color: var(--color-primary-light);
    font-size: 1.2rem;
}

.contact-item span {
    display: block;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.contact-item a,
.contact-item p {
    font-weight: 500;
    transition: var(--transition-fast);
}

.contact-item a:hover {
    color: var(--color-primary-light);
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-link {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    font-size: 1.2rem;
    transition: var(--transition-normal);
}

.social-link:hover {
    background: var(--gradient-primary);
    border-color: transparent;
    transform: translateY(-5px);
}

/* Form */
.contact-form {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: 40px;
}

.form-group {
    position: relative;
    margin-bottom: 25px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px 0;
    background: transparent;
    border: none;
    border-bottom: 2px solid var(--color-border);
    color: var(--color-text);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition-normal);
    outline: none;
}

.form-group label {
    position: absolute;
    left: 0;
    top: 15px;
    color: var(--color-text-muted);
    font-size: 1rem;
    pointer-events: none;
    transition: var(--transition-normal);
}

.form-group input:focus,
.form-group textarea:focus {
    border-bottom-color: var(--color-primary);
}

.form-group input:focus ~ label,
.form-group input:valid ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:valid ~ label {
    top: -10px;
    font-size: 0.8rem;
    color: var(--color-primary-light);
}

.focus-border {
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-normal);
}

.form-group input:focus ~ .focus-border,
.form-group textarea:focus ~ .focus-border {
    left: 0;
    width: 100%;
}

.form-group textarea {
    resize: none;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--color-bg);
    padding: 40px 0;
    border-top: 1px solid var(--color-border);
}

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

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.footer-content p {
    color: var(--color-text-muted);
    margin-bottom: 10px;
}

.footer-content p i {
    color: var(--color-accent);
}

.copyright {
    font-size: 0.85rem;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
    .skills-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .certificates-slider {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .cursor, .cursor-follower {
        display: none;
    }
    
    body {
        cursor: auto;
    }
    
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--color-bg-secondary);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 30px;
        transition: var(--transition-normal);
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .menu-toggle {
        display: flex;
        z-index: 1001;
    }
    
    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }
    
    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-description {
        margin: 0 auto 35px;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .visual-container {
        width: 300px;
        height: 300px;
    }
    
    .profile-image {
        width: 220px;
        height: 220px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-image {
        order: -1;
    }
    
    .about-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 15px;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .certificates-slider {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .contact-form {
        padding: 30px 20px;
    }
}

@media (max-width: 480px) {
    .hero-role {
        flex-direction: column;
        gap: 5px;
    }
    
    .role-divider {
        display: none;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .btn {
        padding: 12px 25px;
        font-size: 0.9rem;
    }
}

/* ============================================
   Certificate Modal
   ============================================ */
.certificate-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
}

.certificate-modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    z-index: 2001;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 2002;
    width: 40px;
    height: 40px;
    background: rgba(99, 102, 241, 0.2);
    border: 1px solid var(--color-primary);
    border-radius: 50%;
    color: var(--color-primary-light);
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background: var(--color-primary);
    color: white;
}

.modal-image {
    width: 100%;
    background: white;
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
}

.modal-image img {
    width: 100%;
    height: auto;
    object-fit: contain;
    max-height: 500px;
}

.modal-info {
    padding: 30px;
    flex-grow: 1;
}

.modal-info h2 {
    font-family: var(--font-primary);
    font-size: 1.8rem;
    margin-bottom: 15px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.modal-info p {
    color: var(--color-text-muted);
    line-height: 1.8;
    font-size: 1rem;
}

/* ============================================
   Success Modal
   ============================================ */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    opacity: 0; /* start hidden, animated to 1 when opening */
}

.modal-content {
    position: relative;
    z-index: 10001;
    background: var(--color-bg-card);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    max-width: 500px;
    width: 90%;
}

.modal-body {
    padding: 50px 40px;
    text-align: center;
}

.success-icon {
    font-size: 4rem;
    color: #10b981;
    margin-bottom: 25px;
    animation: bounce 0.6s ease-in-out;
}

@keyframes bounce {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.modal-body h2 {
    font-size: 2rem;
    color: var(--color-text);
    margin-bottom: 15px;
    font-weight: 700;
}

.modal-body p {
    color: var(--color-text-muted);
    margin-bottom: 30px;
    font-size: 1rem;
    line-height: 1.6;
}

.modal-body .btn {
    min-width: 150px;
}

/* ============================================
   Animaciones de Scroll
   ============================================ */
.reveal {
    opacity: 0;
    transform: translateY(50px);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}