/* Variables CSS */
:root {
    /* Colores tema claro */
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #06b6d4;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --background: #ffffff;
    --surface: #f9fafb;
    --border: #e5e7eb;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-dark: rgba(0, 0, 0, 0.2);
    
    /* Tipografía */
    --font-family: 'Inter', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    /* Espaciado */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Transiciones */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Bordes */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
}

/* Tema oscuro */
[data-theme="dark"] {
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --background: #111827;
    --surface: #1f2937;
    --border: #374151;
    --shadow: rgba(0, 0, 0, 0.3);
    --shadow-dark: rgba(0, 0, 0, 0.5);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

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

/* Partículas de fondo */
#particles-js {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.3;
}

/* Toggle de tema */
.theme-toggle {
    position: fixed;
    bottom: var(--spacing-xl);
    left: var(--spacing-xl);
    z-index: 1000;
}

.theme-btn {
    width: 50px;
    height: 50px;
    border: none;
    border-radius: var(--radius-full);
    background: var(--surface);
    color: var(--text-primary);
    font-size: var(--font-size-lg);
    cursor: pointer;
    box-shadow: 0 4px 20px var(--shadow);
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--border);
}

.theme-btn:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 8px 30px var(--shadow-dark);
    border-color: var(--primary-color);
}

/* Navegación */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 999;
    transition: all var(--transition-normal);
}

[data-theme="dark"] .navbar {
    background: rgba(17, 24, 39, 0.95);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo .logo-text {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    position: relative;
    transition: color var(--transition-fast);
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    transition: width var(--transition-fast);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: var(--transition-fast);
}

/* Sección Hero */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.hero-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero-text {
    animation: fadeInUp 1s ease-out;
}

.greeting {
    display: block;
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.name {
    display: block;
    font-size: var(--font-size-5xl);
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    font-size: var(--font-size-2xl);
    color: var(--accent-color);
    margin-bottom: var(--spacing-lg);
    font-weight: 600;
}

.typewriter {
    border-right: 2px solid var(--accent-color);
    animation: typing 3s steps(20) infinite, blink 1s infinite;
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.4);
}

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

.btn-secondary:hover {
    background: var(--surface);
    transform: translateY(-2px);
}

/* Imagen del hero */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInRight 1s ease-out 0.3s both;
}

.profile-container {
    position: relative;
    width: 300px;
    height: 300px;
}

.profile-ring {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 3px solid;
    border-image: linear-gradient(135deg, var(--primary-color), var(--secondary-color)) 1;
    border-radius: var(--radius-full);
    animation: rotate 10s linear infinite;
}

.profile-picture {
    width: 100%;
    height: 100%;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 120px;
    color: white;
    box-shadow: 0 20px 60px var(--shadow-dark);
}

/* Indicador de scroll */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    animation: bounce 2s infinite;
    transition: opacity var(--transition-normal), transform var(--transition-normal);
    z-index: 10;
}

.scroll-mouse {
    width: 25px;
    height: 40px;
    border: 2px solid var(--text-secondary);
    border-radius: 15px;
    position: relative;
}

.scroll-wheel {
    width: 3px;
    height: 6px;
    background: var(--text-secondary);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll-wheel 2s infinite;
}

/* Secciones */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-line {
    width: 80px;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    margin: 0 auto var(--spacing-lg);
    border-radius: var(--radius-full);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Sección Sobre mí */
.about {
    padding: var(--spacing-3xl) 0;
    background: var(--surface);
    position: relative;
    z-index: 2;
}

.about-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.8;
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.skills-container h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-lg);
    text-align: center;
    color: var(--text-primary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-xl);
    max-width: 900px;
    margin: 0 auto;
}

.skill-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-xl);
    background: var(--background);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 20px var(--shadow);
    transition: all var(--transition-normal);
    text-align: center;
    border: 2px solid transparent;
}

.skill-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px var(--shadow-dark);
    border-color: var(--primary-color);
}

.skill-item i {
    font-size: var(--font-size-3xl);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
}

.skill-item span {
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--font-size-lg);
}

/* Sección Contacto */
.contact {
    padding: var(--spacing-3xl) 0;
    position: relative;
    z-index: 2;
}

.contact-content {
    display: flex;
    justify-content: center;
    margin-top: var(--spacing-2xl);
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    max-width: 900px;
    width: 100%;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 20px var(--shadow);
    transition: all var(--transition-normal);
}

.contact-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--shadow-dark);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-xl);
}

.contact-details h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.contact-details a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* Footer */
.footer {
    background: var(--surface);
    padding: var(--spacing-2xl) 0;
    border-top: 1px solid var(--border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-content p {
    color: var(--text-secondary);
}

.footer-content .fas.fa-heart {
    color: #ef4444;
}

.social-links {
    display: flex;
    gap: var(--spacing-lg);
}

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--background);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-normal);
    box-shadow: 0 2px 10px var(--shadow);
}

.social-links a:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    transform: translateY(-2px);
}

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

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

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

@keyframes scroll-wheel {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(10px);
    }
}

@keyframes typing {
    0%, 50% {
        border-right-color: var(--accent-color);
    }
    51%, 100% {
        border-right-color: transparent;
    }
}

@keyframes blink {
    50% {
        border-right-color: transparent;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .theme-toggle {
        bottom: var(--spacing-lg);
        left: var(--spacing-lg);
        z-index: 1001;
    }
    
    .theme-btn {
        width: 45px;
        height: 45px;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--background);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px var(--shadow);
        padding: var(--spacing-xl) 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
        position: relative;
        z-index: 1001;
    }
    
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        text-align: center;
    }
    
    .name {
        font-size: var(--font-size-4xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-xl);
    }
    
    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .profile-container {
        width: 250px;
        height: 250px;
    }
    
    .profile-picture {
        font-size: 100px;
    }
    
    .contact-content {
        justify-content: center;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
        gap: var(--spacing-lg);
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-lg);
        text-align: center;
    }
    
    .section-title {
        font-size: var(--font-size-3xl);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .theme-toggle {
        bottom: var(--spacing-md);
        left: var(--spacing-md);
    }
    
    .theme-btn {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-base);
    }
    
    .name {
        font-size: var(--font-size-3xl);
    }
    
    .hero-description {
        font-size: var(--font-size-base);
    }
    
    .btn {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--font-size-sm);
    }
    
    .profile-container {
        width: 200px;
        height: 200px;
    }
    
    .profile-picture {
        font-size: 80px;
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
}