:root{--primary-color:#3498db;--primary-dark:#2980b9;--secondary-color:#2c3e50;--accent-color:#f39c12;--text-color:#333;--text-light:#999;--text-dark:#666;--text-white:#fff;--background-light:#f8f9fa;--background-dark:#1e293b;--border-color:#e1e1e1;--bitcoin-color:#f7931a;--gradient-primary:linear-gradient(135deg,#3498db,#2c3e50);--gradient-dark:linear-gradient(135deg,#2c3e50,#1a202c);--shadow-sm:0 1px 3px rgba(0,0,0,0.1);--shadow-md:0 4px 6px rgba(0,0,0,0.1);--shadow-lg:0 10px 15px rgba(0,0,0,0.1);--shadow-xl:0 20px 25px rgba(0,0,0,0.1);--border-radius-sm:4px;--border-radius-md:8px;--border-radius-lg:16px;--border-radius-full:9999px;--spacing-xs:0.25rem;--spacing-sm:0.5rem;--spacing-md:1rem;--spacing-lg:2rem;--spacing-xl:4rem;--transition-fast:0.2s ease;--transition-medium:0.3s ease;--transition-slow:0.5s ease;--container-width:1200px}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;font-size:16px}body{font-family:Roboto,sans-serif;line-height:1.6;color:var(--text-color);background-color:var(--background-light);overflow-x:hidden}a{text-decoration:none;color:var(--primary-color);transition:color var(--transition-fast)}a:hover{color:var(--primary-dark)}img{max-width:100%;height:auto}ul{list-style:none}section{padding:var(--spacing-xl) 0}h1,h2,h3,h4,h5,h6{font-family:Montserrat,sans-serif;font-weight:700;line-height:1.2;margin-bottom:var(--spacing-md);color:var(--secondary-color)}h1{font-size:3rem}h2{font-size:2.5rem}h3{font-size:1.75rem}h4{font-size:1.5rem}p{margin-bottom:var(--spacing-md)}.section-header{text-align:center;max-width:800px;margin:0 auto var(--spacing-xl)}.section-header h2{position:relative;display:inline-block;margin-bottom:var(--spacing-md);padding-bottom:var(--spacing-md)}.section-header h2:after{content:"";position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:80px;height:3px;background:var(--primary-color);border-radius:var(--border-radius-full)}.section-header p{color:var(--text-dark);font-size:1.1rem}.skill-header p{color:var(--text-light)}.container{width:100%;max-width:var(--container-width);padding:0 var(--spacing-lg);margin:0 auto}.row{display:flex;flex-wrap:wrap;margin:0 -15px}.col{padding:0 15px}#header{position:fixed;top:0;left:0;width:100%;z-index:1000;background-color:rgba(0,0,0,.2);background-color:#fff;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);transition:all var(--transition-medium);padding:var(--spacing-md) 0;box-shadow:var(--shadow-md)}#main-nav{display:flex;justify-content:space-between;align-items:center;gap:1rem}.logo h1{font-size:1.5rem;margin-bottom:0}.logo span{color:var(--primary-color)}.nav-links{display:flex;gap:1.5rem;align-items:center}.nav-links li a{color:var(--text-color);font-weight:500;padding:var(--spacing-sm) 0;position:relative}.nav-links li a:after{content:"";position:absolute;bottom:0;left:0;width:0;height:2px;background-color:var(--primary-color);transition:width var(--transition-medium)}.nav-links li a:hover:after{width:100%}.nav-links li a.btn-primary{color:white;padding:var(--spacing-sm) var(--spacing-lg);border-radius:var(--border-radius-full)}.nav-links li a.btn-primary:after{display:none}.nav-links.active{display:flex;flex-direction:column;position:absolute;top:100%;left:0;width:100%;background-color:white;box-shadow:var(--shadow-md);padding:var(--spacing-md);z-index:10}.mobile-menu-icon.active i:before{content:"\f00d"}.mobile-menu-icon{display:none;font-size:1.5rem;cursor:pointer}.lang-dropdown{position:relative;display:inline-block}.lang-btn{cursor:pointer;font-weight:500;color:var(--text-color);border:none;display:flex;align-items:center;gap:.25rem;transition:all var(--transition-fast)}.lang-btn:hover{border-color:var(--primary-color);color:var(--primary-color)}.arrow{font-size:.7rem}.lang-options{position:absolute;top:calc(100% + .25rem);right:0;background:#fff;border:1px solid var(--border-color);border-radius:var(--border-radius-md);box-shadow:var(--shadow-md);list-style:none;padding:var(--spacing-sm) 0;min-width:140px;z-index:10000}.lang-options li a{display:block;padding:var(--spacing-sm) var(--spacing-md);color:var(--text-color);text-decoration:none;transition:background-color var(--transition-fast)}.lang-options li a:hover{background-color:var(--primary-color);color:#fff}.hero{padding-top:6rem;min-height:700px;background:var(--gradient-primary);color:var(--text-white);display:flex;align-items:center;position:relative;overflow:hidden}.hero:before{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background-image:url(/hero-bg-4.jpg);background-size:cover;background-position:50%;opacity:.1}.hero .container{display:flex;align-items:center;justify-content:space-between;position:relative;z-index:1}.hero-content{max-width:600px}.hero-content h1{font-size:4rem;margin-bottom:var(--spacing-sm);color:var(--text-white)}.hero-content span{font-size:1.5rem;font-weight:400;color:rgba(255,255,255,.8);margin-bottom:var(--spacing-xs)}.hero-content h2{font-size:2rem;background-image:linear-gradient(45deg,var(--primary-color),var(--accent-color));background:#f39c12;-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:var(--spacing-md)}.hero-content p{font-size:1.2rem;color:rgba(255,255,255,.9);margin-bottom:var(--spacing-lg)}.hero-buttons{margin-bottom:var(--spacing-lg)}.hero-buttons,.tech-stack{display:flex;gap:var(--spacing-md)}.tech-stack{align-items:center;color:rgba(255,255,255,.9);font-size:.9rem}.tech-icons{display:flex;gap:var(--spacing-sm);font-size:1.5rem}.tech-icons i{transition:transform var(--transition-fast)}.tech-icons i:hover{transform:translateY(-5px)}.hero-image{position:relative;z-index:2}.hero-image img{max-height:450px;border-radius:var(--border-radius-lg);box-shadow:var(--shadow-xl);animation:float 6s ease-in-out infinite}.about{background-color:white;position:relative}.about-content{display:flex;align-items:center;gap:var(--spacing-xl)}.about-image{flex:1 1}.about-image img{border-radius:var(--border-radius-lg);box-shadow:var(--shadow-lg)}.about-text{flex:1.5 1}.about-text h3{position:relative;padding-left:var(--spacing-md);margin-bottom:var(--spacing-md)}.about-text h3:before{content:"";position:absolute;left:0;top:0;height:100%;width:3px;background-color:var(--primary-color);border-radius:var(--border-radius-full)}.about-details{display:flex;flex-wrap:wrap;gap:var(--spacing-md);margin:var(--spacing-lg) 0}.detail-item{display:flex;align-items:center;gap:var(--spacing-sm);min-width:200px}.detail-item i{color:var(--primary-color);font-size:1.2rem}.about-buttons{display:flex;gap:var(--spacing-md);margin-top:var(--spacing-lg)}.skills{background-color:var(--background-dark);padding:var(--spacing-xl) 0}.skills,.skills .section-header h2{color:var(--text-white)}.skill-circles{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:var(--spacing-lg);gap:var(--spacing-lg);margin-bottom:var(--spacing-xl)}.skill-circle-item{display:flex;flex-direction:column;align-items:center;text-align:center}.circle-progress-container{position:relative;margin-bottom:var(--spacing-md)}.circle-progress{position:relative;display:flex;justify-content:center;align-items:center}.circle-svg{transform:rotate(-90deg)}.circle-bg{stroke:rgba(255,255,255,.1)}.circle-fill{stroke:var(--primary-color);transition:stroke-dashoffset 2s ease}.circle-percentage{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:1.8rem;font-weight:700;color:var(--text-white)}.skill-circle-item h4{color:var(--text-white);font-size:1.2rem;margin-top:var(--spacing-sm)}@media screen and (max-width:1024px){.skill-circles{grid-template-columns:repeat(2,1fr);gap:var(--spacing-xl)}}@media screen and (max-width:576px){.skill-circles{grid-template-columns:1fr}}.skills-categories{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));grid-gap:var(--spacing-lg);gap:var(--spacing-lg)}.skill-category{background-color:rgba(255,255,255,.05);border-radius:var(--border-radius-md);padding:var(--spacing-lg);transition:transform var(--transition-medium),background-color var(--transition-medium);height:100%}.skill-category:hover{transform:translateY(-10px);background-color:rgba(255,255,255,.08);box-shadow:var(--shadow-lg)}.category-header{display:flex;align-items:center;gap:var(--spacing-sm);margin-bottom:var(--spacing-md)}.category-header i{font-size:1.8rem;color:var(--primary-color)}.category-header h3{color:var(--text-white);margin-bottom:0;font-size:1.3rem}.tech-badges{display:flex;flex-wrap:wrap;gap:10px}.tech-badge{background-color:rgba(52,152,219,.2);color:var(--text-white);padding:6px 12px;border-radius:var(--border-radius-full);font-size:.85rem;transition:all var(--transition-fast);border:1px solid rgba(52,152,219,.3)}.tech-badge:hover{background-color:rgba(52,152,219,.4);transform:translateY(-3px);box-shadow:0 3px 5px rgba(0,0,0,.2)}.skills-cta{text-align:center;margin-top:var(--spacing-xl);padding:var(--spacing-lg);background-color:rgba(255,255,255,.05);border-radius:var(--border-radius-md)}.skills-cta p{margin-bottom:var(--spacing-md);font-size:1.1rem}@keyframes progressAnimation{0%{width:0}to{width:100%}}.skill-progress.animate .progress{animation:progressAnimation 1.5s ease-out forwards}@media screen and (max-width:768px){.skills-categories{grid-template-columns:1fr}.tech-badges{justify-content:center}}.services{background-color:white}.services-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));grid-gap:var(--spacing-lg);gap:var(--spacing-lg)}.service-card{background-color:white;border-radius:var(--border-radius-md);padding:var(--spacing-lg);box-shadow:var(--shadow-md);transition:transform var(--transition-medium),box-shadow var(--transition-medium);position:relative;z-index:1;overflow:hidden}.service-card:before{content:"";position:absolute;top:0;left:0;width:100%;height:5px;background:var(--gradient-primary);z-index:-1}.service-card:hover{transform:translateY(-10px);box-shadow:var(--shadow-lg)}.service-icon{width:70px;height:70px;background-color:rgba(52,152,219,.1);border-radius:var(--border-radius-full);display:flex;align-items:center;justify-content:center;margin-bottom:var(--spacing-md)}.service-icon i{font-size:1.8rem;color:var(--primary-color)}.service-card h3{margin-bottom:var(--spacing-sm)}.service-features{margin:var(--spacing-md) 0}.service-features li{padding:var(--spacing-xs) 0;display:flex;align-items:center}.service-features li:before{content:"✓";color:var(--primary-color);margin-right:var(--spacing-sm);font-weight:700}.btn-text{display:inline-flex;align-items:center;gap:var(--spacing-sm);color:var(--primary-color);font-weight:500;transition:gap var(--transition-medium)}.btn-text:hover{gap:var(--spacing-md)}.portfolio{background-color:var(--background-light)}.portfolio-filters{display:flex;justify-content:center;flex-wrap:wrap;gap:var(--spacing-sm);margin-bottom:var(--spacing-lg)}.filter-btn{background:none;border:none;color:var(--text-color);padding:var(--spacing-sm) var(--spacing-md);cursor:pointer;font-weight:500;transition:all var(--transition-fast);border-radius:var(--border-radius-full)}.filter-btn.active,.filter-btn:hover{background-color:var(--primary-color);color:white}.portfolio-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));grid-gap:var(--spacing-lg);gap:var(--spacing-lg)}.portfolio-item{border-radius:var(--border-radius-md);overflow:hidden;box-shadow:var(--shadow-md);background-color:white;transition:transform var(--transition-medium),box-shadow var(--transition-medium)}.portfolio-item:hover{transform:translateY(-10px);box-shadow:var(--shadow-lg)}.portfolio-image{position:relative;overflow:hidden;height:200px}.portfolio-image>img{width:100%;height:100%;object-fit:cover;transition:transform var(--transition-medium)}.portfolio-item:hover .portfolio-image img{transform:scale(1.1)}.portfolio-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.7);display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity var(--transition-medium)}.portfolio-item:hover .portfolio-overlay{opacity:1}.portfolio-info{text-align:center;color:white;padding:var(--spacing-md)}.portfolio-info h3{color:white;margin-bottom:var(--spacing-sm)}.portfolio-links{display:flex;justify-content:center;gap:var(--spacing-md);margin-top:var(--spacing-md)}.portfolio-links a{width:40px;height:40px;border-radius:var(--border-radius-full);background-color:var(--primary-color);color:white;display:flex;align-items:center;justify-content:center;transition:background-color var(--transition-fast)}.portfolio-links a:hover{background-color:var(--accent-color)}.portfolio-details{padding:var(--spacing-md)}.portfolio-details h4{margin-bottom:var(--spacing-xs)}.portfolio-details p{color:var(--text-dark);font-size:.9rem;margin-bottom:0}.portfolio-more{text-align:center;margin-top:var(--spacing-xl)}.testimonials{background-color:white}.testimonials-slider{max-width:800px;margin:0 auto}.testimonial-item{padding:var(--spacing-lg);background-color:var(--background-light);border-radius:var(--border-radius-md);box-shadow:var(--shadow-md);position:relative;margin-bottom:var(--spacing-md)}.testimonial-item:before{content:'"';position:absolute;top:20px;left:20px;font-size:6rem;font-family:Georgia,serif;color:rgba(52,152,219,.1);line-height:1}.testimonial-content p{font-style:italic;margin-bottom:var(--spacing-md);padding-left:var(--spacing-lg)}.client-info{display:flex;align-items:center;padding-left:var(--spacing-lg)}.client-info h4,.client-info p{margin-bottom:0}.client-info p{font-size:.9rem;color:var(--text-dark)}.faq{background-color:var(--background-light)}.faq-list{max-width:800px;margin:0 auto}.faq-item{margin-bottom:var(--spacing-md);background-color:white;border-radius:var(--border-radius-md);box-shadow:var(--shadow-sm);overflow:hidden}.faq-question{padding:var(--spacing-md);cursor:pointer;display:flex;justify-content:space-between;align-items:center}.faq-question h3{margin-bottom:0;font-size:1.1rem}.faq-toggle{background-color:var(--primary-color);color:white;width:24px;height:24px;border-radius:var(--border-radius-full);display:flex;align-items:center;justify-content:center;transition:transform var(--transition-fast)}.faq-item.active .faq-toggle{transform:rotate(45deg)}.faq-answer{padding:0 var(--spacing-md) var(--spacing-md);display:none}.faq-item.active .faq-answer{display:block}.contact{background-color:white}.contact-content{display:grid;grid-template-columns:1fr 1.5fr;grid-gap:var(--spacing-xl);gap:var(--spacing-xl)}.contact-info{gap:var(--spacing-lg)}.contact-info,.contact-item{display:flex;flex-direction:column}.contact-item{gap:var(--spacing-sm)}.contact-item>h3>i{color:var(--primary-color);font-size:1.8rem;margin-bottom:var(--spacing-sm)}.social-links{display:flex;gap:var(--spacing-md)}.social-links a{width:40px;height:40px;border-radius:var(--border-radius-full);background-color:var(--primary-color);color:white;display:flex;align-items:center;justify-content:center;transition:transform var(--transition-fast),background-color var(--transition-fast)}.social-links a:hover{transform:translateY(-5px);background-color:var(--primary-dark)}.contact-form{background-color:var(--background-light);padding:var(--spacing-xl);border-radius:var(--border-radius-md);box-shadow:var(--shadow-md)}.form-group{margin-bottom:var(--spacing-md)}.form-group input,.form-group textarea{width:100%;padding:var(--spacing-md);border:1px solid var(--border-color);border-radius:var(--border-radius-md);font-family:inherit;font-size:1rem;transition:border-color var(--transition-fast)}.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--primary-color)}.form-group textarea{min-height:150px;resize:vertical}.donation{background-color:var(--background-dark)}.donation,.donation .section-header h2{color:white}.donation-content{display:flex;justify-content:center;align-items:center}.qrcode{text-align:center;padding:var(--spacing-lg);background-color:white;border-radius:var(--border-radius-md);box-shadow:var(--shadow-lg)}.qrcode img{margin-bottom:var(--spacing-md)}.qrcode p{margin-bottom:0;color:var(--text-color)}.qrcode strong{color:var(--bitcoin-color)}#footer{background-color:var(--secondary-color);color:white;padding:var(--spacing-xl) 0 var(--spacing-md)}.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));grid-gap:var(--spacing-xl);gap:var(--spacing-xl);margin-bottom:var(--spacing-xl)}.footer-logo h3{color:white;margin-bottom:var(--spacing-xs)}.footer-logo p{color:rgba(255,255,255,.7)}.footer-links h4,.footer-social h4{color:white;margin-bottom:var(--spacing-md)}.footer-links ul{display:flex;flex-direction:column;gap:var(--spacing-sm)}.footer-links ul li a{color:rgba(255,255,255,.7);transition:color var(--transition-fast)}.footer-links ul li a:hover{color:var(--primary-color)}.footer-social .social-links{margin-top:var(--spacing-md)}.btn-primary,.btn-secondary{font:inherit;display:inline-block;border:none;padding:var(--spacing-md) var(--spacing-lg);border-radius:var(--border-radius-full);font-weight:500;text-align:center;cursor:pointer;transition:all var(--transition-fast)}.btn-primary{background-color:var(--primary-color);color:white}.btn-primary:hover{background-color:var(--primary-dark);transform:translateY(-3px);box-shadow:var(--shadow-md);color:white}.btn-secondary{background-color:transparent;color:var(--primary-color);border:2px solid var(--primary-color)}.btn-secondary:hover{background-color:var(--primary-color);color:white;transform:translateY(-3px);box-shadow:var(--shadow-md)}.btn-orange{display:inline-block;padding:var(--spacing-md) var(--spacing-lg);border-radius:var(--border-radius-full);font-weight:500;text-align:center;cursor:pointer;transition:all var(--transition-fast);background-color:#f39c12;color:white;border:none;box-shadow:var(--shadow-sm)}.btn-orange:hover{background-color:#e67e22;transform:translateY(-3px);box-shadow:var(--shadow-md);color:white}.btn-orange:active{transform:translateY(-1px);box-shadow:var(--shadow-sm)}.btn-orange-outline{background-color:transparent;color:#f39c12;border:2px solid #f39c12}.btn-orange-outline:hover{background-color:#f39c12;color:white}.btn-orange-sm{padding:var(--spacing-sm) var(--spacing-md);font-size:.9rem}.btn-orange-lg{padding:var(--spacing-lg) var(--spacing-xl);font-size:1.1rem}.back-to-top{position:fixed;right:30px;bottom:30px;width:50px;height:50px;border-radius:var(--border-radius-full);background-color:var(--primary-color);color:white;display:flex;align-items:center;justify-content:center;font-size:1.2rem;opacity:0;visibility:hidden;transition:all var(--transition-fast);z-index:999}.back-to-top.active{opacity:1;visibility:visible}.back-to-top:hover{background-color:var(--primary-dark);transform:translateY(-5px)}@keyframes float{0%{transform:translateY(0)}50%{transform:translateY(-15px)}to{transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@media screen and (min-width:768px){.hero{height:100vh}}@media screen and (max-width:1024px){html{font-size:15px}.hero{min-height:600px}.hero-content h1{font-size:3rem}.contact-content{grid-template-columns:1fr}}@media screen and (max-width:768px){html{font-size:14px}.nav-links{display:none}.mobile-menu-icon{display:block}.hero .container{flex-direction:column;text-align:center}.hero-content{margin-bottom:var(--spacing-xl)}.hero-buttons,.tech-stack{justify-content:center}.about-content{flex-direction:column}.skills-categories{grid-template-columns:1fr}.portfolio-grid{grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}}@media screen and (max-width:576px){.section-header h2{font-size:2rem}.hero-content h1{font-size:2.5rem}.hero-content h3{font-size:1.5rem}.hero-buttons{flex-direction:column;width:100%}.btn-primary,.btn-secondary{width:100%}.service-card{padding:var(--spacing-md)}.portfolio-filters{flex-direction:column;align-items:center}.filter-btn{width:100%;text-align:center}.contact-form{padding:var(--spacing-md)}.footer-content{grid-template-columns:1fr;gap:var(--spacing-lg)}}@media screen and (max-width:380px){.hero-content h1{font-size:2rem}.hero-content h3{font-size:1.2rem}.section-header h2{font-size:1.8rem}.section-header p{font-size:1rem}.portfolio-item{min-width:100%}}.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:1000}.modal{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:white;padding:1.5rem 2rem;border-radius:8px;box-shadow:0 5px 15px rgba(0,0,0,.3);max-width:90vw;width:400px;z-index:1001;text-align:center}