/* ============================================
   DESIGN SYSTEM
   ============================================ */
:root {
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --primary-light: rgba(59,130,246,0.1);
  --primary-glow: rgba(59,130,246,0.3);
  --bg: #0a0a0a;
  --bg-secondary: #111111;
  --bg-card: #161616;
  --bg-card-hover: #1e1e1e;
  --bg-input: #1a1a1a;
  --text: #f5f5f5;
  --text-secondary: #a0a0a0;
  --text-muted: #666666;
  --border: rgba(255,255,255,0.08);
  --border-hover: rgba(255,255,255,0.15);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.4);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 32px var(--primary-glow);
  --success: #22c55e;
  --error: #ef4444;
  --warning: #f59e0b;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  --font: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.5rem;
  --text-5xl: 3.5rem;
  --leading-tight: 1.2;
  --leading-normal: 1.6;
  --leading-relaxed: 1.8;
  --weight-normal: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.4s ease;
  --container: 1200px;
  --container-narrow: 800px;
  --nav-height: 120px;
}
[data-theme="light"] {
  --bg: #f8f9fa;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f0f1f3;
  --bg-input: #f0f1f3;
  --text: #111111;
  --text-secondary: #555555;
  --text-muted: #999999;
  --border: rgba(0,0,0,0.08);
  --border-hover: rgba(0,0,0,0.15);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.1);
}

/* RESET */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:var(--leading-normal);transition:background var(--transition-base),color var(--transition-base)}
a{color:var(--primary);text-decoration:none;transition:color var(--transition-fast)}
a:hover{color:var(--primary-hover)}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;outline:none}
input,textarea,select{font-family:inherit;outline:none}

/* UTILS */
.container{max-width:var(--container);margin:0 auto;padding:0 var(--space-lg)}
.section{padding:var(--space-4xl) 0}
.section--alt{background:var(--bg-secondary)}
.badge{display:inline-block;padding:var(--space-xs) var(--space-md);background:var(--primary-light);color:var(--primary);font-size:var(--text-xs);font-weight:var(--weight-semibold);border-radius:var(--radius-full);text-transform:uppercase;letter-spacing:1px}

/* BTNS */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:14px 28px;font-size:var(--text-sm);font-weight:var(--weight-semibold);border-radius:var(--radius-lg);transition:all var(--transition-base);white-space:nowrap}
.btn--primary{background:var(--primary);color:#fff;box-shadow:0 4px 16px var(--primary-glow)}
.btn--primary:hover{background:var(--primary-hover);transform:translateY(-2px);box-shadow:0 8px 24px var(--primary-glow);color:#fff}
.btn--outline{background:transparent;color:var(--text);border:2px solid var(--border)}
.btn--outline:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}
.btn--lg{padding:18px 36px;font-size:var(--text-base)}
.btn--sm{padding:10px 20px;font-size:var(--text-xs)}

/* NAVBAR */
.navbar{position:fixed;top:0;left:0;right:0;height:var(--nav-height);background:rgba(10,10,10,0.8);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border);z-index:1000;transition:background var(--transition-base)}
[data-theme="light"] .navbar{background:rgba(248,249,250,0.85)}
.navbar__inner{margin:0 auto;padding:0 var(--space-lg);height:100%;display:flex;align-items:center;justify-content:space-between;position:relative}
.navbar__brand{position:absolute;left:50%;transform:translateX(-50%)}
.navbar__logo{height:110px;width:auto}
.navbar__brand:hover{opacity:0.8}
.logo-subtitle{fill:#111111;transition:fill var(--transition-base)}
[data-theme="dark"] .logo-subtitle{fill:#e0e0e0}
.navbar__right{display:flex;align-items:center;gap:var(--space-sm)}
.navbar__menu{display:flex;align-items:center;gap:var(--space-sm)}
.navbar__link{padding:8px 16px;color:var(--text-secondary);font-size:var(--text-sm);font-weight:var(--weight-medium);border-radius:var(--radius-md);transition:all var(--transition-fast)}
.navbar__link:hover,.navbar__link.active{color:var(--text);background:var(--primary-light)}
.navbar__actions--left{display:flex;align-items:center;gap:var(--space-sm)}
.theme-toggle{width:40px;height:40px;border-radius:50%;background:var(--bg-card);color:var(--text);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:1.1rem;transition:all var(--transition-fast)}
.theme-toggle:hover{background:var(--bg-card-hover);border-color:var(--border-hover);transform:scale(1.05)}
.hamburger{display:none;width:40px;height:40px;flex-direction:column;align-items:center;justify-content:center;gap:5px;background:transparent;border:none;cursor:pointer}
.hamburger span{display:block;width:22px;height:2px;background:var(--text);border-radius:2px;transition:all var(--transition-base)}
.hamburger.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* COVER */
.cover{width:100%;overflow:hidden;margin-top:var(--nav-height);margin-bottom:0}
.cover__img{width:100%;height:auto;display:block}

/* HERO */
.hero{padding:var(--space-md) 0 var(--space-4xl);position:relative}
.hero__content{max-width:700px}
.hero__badge{margin-bottom:var(--space-lg)}
.hero__title{font-size:var(--text-5xl);font-weight:var(--weight-bold);line-height:var(--leading-tight);margin-bottom:var(--space-lg)}
.hero__title span{background:linear-gradient(135deg,var(--primary),#8b5cf6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero__desc{font-size:var(--text-lg);color:var(--text-secondary);line-height:var(--leading-relaxed);margin-bottom:var(--space-xl);max-width:540px}
.hero__actions{display:flex;gap:var(--space-md);flex-wrap:wrap}
.hero__stats{display:flex;gap:var(--space-2xl);margin-top:var(--space-3xl);padding-top:var(--space-xl);border-top:1px solid var(--border)}
.hero__stat-value{font-size:var(--text-3xl);font-weight:var(--weight-bold);color:var(--text)}
.hero__stat-label{font-size:var(--text-xs);color:var(--text-muted);text-transform:uppercase;letter-spacing:1px;margin-top:var(--space-xs)}

/* SECTION HEADER */
.section-header{text-align:center;margin-bottom:var(--space-3xl)}
.section-header__badge{margin-bottom:var(--space-md)}
.section-header__title{font-size:var(--text-4xl);font-weight:var(--weight-bold);margin-bottom:var(--space-md)}
.section-header__desc{font-size:var(--text-lg);color:var(--text-secondary);max-width:560px;margin:0 auto}

/* SERVICES */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-lg)}
.service-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-xl);padding:var(--space-xl);transition:all var(--transition-base);position:relative;overflow:hidden}
.service-card:hover{border-color:var(--primary);transform:translateY(-4px);box-shadow:var(--shadow-glow)}
.service-card__icon{width:56px;height:56px;border-radius:var(--radius-lg);background:var(--primary-light);display:flex;align-items:center;justify-content:center;font-size:1.6rem;margin-bottom:var(--space-lg)}
.service-card__title{font-size:var(--text-xl);font-weight:var(--weight-semibold);margin-bottom:var(--space-sm)}
.service-card__desc{font-size:var(--text-sm);color:var(--text-secondary);line-height:var(--leading-relaxed)}
.service-card__price{margin-top:var(--space-lg);font-size:var(--text-sm);color:var(--primary);font-weight:var(--weight-semibold)}

/* PORTFOLIO */
.portfolio-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-md)}
.portfolio-item{position:relative;border-radius:var(--radius-xl);overflow:hidden;aspect-ratio:16/10;background:var(--bg-card);border:1px solid var(--border);cursor:pointer;transition:all var(--transition-base)}
.portfolio-item:hover{transform:scale(1.02);border-color:var(--primary);box-shadow:var(--shadow-md)}
.portfolio-item__overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(0,0,0,0.85) 0%,rgba(0,0,0,0.2) 40%,transparent 60%);display:flex;flex-direction:column;justify-content:flex-end;padding:var(--space-lg);opacity:1;transition:background var(--transition-base)}
.portfolio-item__tag{font-size:var(--text-xs);color:var(--primary);font-weight:var(--weight-semibold);margin-bottom:var(--space-xs)}
.portfolio-item__title{font-size:var(--text-lg);font-weight:var(--weight-semibold);color:#fff}
.portfolio-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:2.5rem;background:linear-gradient(135deg,var(--bg-card) 0%,var(--bg-card-hover) 100%)}
.portfolio-item img.portfolio-img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}

/* TESTIMONIALS */
.testimonials-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-lg)}
.testimonial-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-xl);padding:var(--space-xl);transition:all var(--transition-base)}
.testimonial-card:hover{border-color:var(--border-hover);transform:translateY(-2px)}
.testimonial-card__stars{color:var(--warning);font-size:var(--text-sm);margin-bottom:var(--space-md)}
.testimonial-card__text{font-size:var(--text-sm);color:var(--text-secondary);line-height:var(--leading-relaxed);margin-bottom:var(--space-lg);font-style:italic}
.testimonial-card__author{display:flex;align-items:center;gap:var(--space-md)}
.testimonial-card__avatar{width:44px;height:44px;border-radius:50%;background:var(--primary-light);display:flex;align-items:center;justify-content:center;font-weight:var(--weight-bold);color:var(--primary);font-size:var(--text-sm);object-fit:cover}
.testimonial-card__name{font-size:var(--text-sm);font-weight:var(--weight-semibold)}
.testimonial-card__role{font-size:var(--text-xs);color:var(--text-muted)}

/* ABOUT */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-3xl);align-items:center}
.about__image{border-radius:var(--radius-xl);overflow:hidden;aspect-ratio:4/3;background:linear-gradient(135deg,var(--bg-card) 0%,var(--bg-card-hover) 100%);display:flex;align-items:center;justify-content:center;font-size:4rem;border:1px solid var(--border)}
.about__content .badge{margin-bottom:var(--space-lg)}
.about__title{font-size:var(--text-3xl);font-weight:var(--weight-bold);margin-bottom:var(--space-lg)}
.about__text{font-size:var(--text-base);color:var(--text-secondary);line-height:var(--leading-relaxed);margin-bottom:var(--space-xl)}
.about__features{display:flex;flex-direction:column;gap:var(--space-md)}
.about__feature{display:flex;align-items:flex-start;gap:var(--space-md)}
.about__feature-icon{width:40px;height:40px;border-radius:var(--radius-md);background:var(--primary-light);display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--primary)}
.about__feature-text strong{display:block;font-size:var(--text-sm);margin-bottom:2px}
.about__feature-text span{font-size:var(--text-xs);color:var(--text-secondary)}

/* FAQ */
.faq-list{max-width:var(--container-narrow);margin:0 auto;display:flex;flex-direction:column;gap:var(--space-md)}
.faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:all var(--transition-base)}
.faq-item.active{border-color:var(--primary)}
.faq-item__question{width:100%;padding:var(--space-lg);display:flex;align-items:center;justify-content:space-between;background:transparent;color:var(--text);font-size:var(--text-base);font-weight:var(--weight-medium);text-align:left;cursor:pointer;transition:color var(--transition-fast)}
.faq-item__question:hover{color:var(--primary)}
.faq-item__icon{font-size:var(--text-lg);color:var(--text-muted);transition:transform var(--transition-base);flex-shrink:0;margin-left:var(--space-md)}
.faq-item.active .faq-item__icon{transform:rotate(45deg);color:var(--primary)}
.faq-item__answer{max-height:0;overflow:hidden;transition:max-height var(--transition-slow),padding var(--transition-slow)}
.faq-item.active .faq-item__answer{max-height:300px;padding:0 var(--space-lg) var(--space-lg)}
.faq-item__answer p{font-size:var(--text-sm);color:var(--text-secondary);line-height:var(--leading-relaxed)}

/* CONTACT */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-3xl)}
.contact__info{display:flex;flex-direction:column;gap:var(--space-xl)}
.contact__info-title{font-size:var(--text-2xl);font-weight:var(--weight-bold)}
.contact__info-desc{font-size:var(--text-base);color:var(--text-secondary);line-height:var(--leading-relaxed)}
.contact__methods{display:flex;flex-direction:column;gap:var(--space-md)}
.contact__method{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-md);background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);transition:all var(--transition-fast)}
.contact__method:hover{border-color:var(--primary);background:var(--primary-light)}
.contact__method-icon{width:44px;height:44px;border-radius:var(--radius-md);background:var(--primary-light);display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0}
.contact__method-label{font-size:var(--text-xs);color:var(--text-muted)}
.contact__method-value{font-size:var(--text-sm);font-weight:var(--weight-medium)}
.contact__form{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-xl);padding:var(--space-xl)}
.form-group{margin-bottom:var(--space-md)}
.form-group label{display:block;font-size:var(--text-xs);color:var(--text-muted);margin-bottom:var(--space-sm);font-weight:var(--weight-medium);text-transform:uppercase;letter-spacing:0.5px}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:12px 16px;border-radius:var(--radius-md);border:1px solid var(--border);background:var(--bg-input);color:var(--text);font-size:var(--text-sm);transition:border var(--transition-fast)}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{border-color:var(--primary)}
.form-group textarea{resize:vertical;min-height:120px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-md)}
.form-success{display:none;text-align:center;padding:var(--space-2xl)}
.form-success.show{display:block}
.form-success__icon{font-size:3rem;margin-bottom:var(--space-md)}
.form-success__title{font-size:var(--text-xl);font-weight:var(--weight-bold);margin-bottom:var(--space-sm)}
.form-success__desc{font-size:var(--text-sm);color:var(--text-secondary)}

/* CTA */
.cta{text-align:center;padding:var(--space-4xl) 0;position:relative;overflow:hidden}
.cta::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(59,130,246,0.05),rgba(139,92,246,0.05));pointer-events:none}
.cta__title{font-size:var(--text-4xl);font-weight:var(--weight-bold);margin-bottom:var(--space-md);position:relative}
.cta__desc{font-size:var(--text-lg);color:var(--text-secondary);margin-bottom:var(--space-xl);position:relative}
.cta .btn{position:relative}

/* FOOTER */
.footer{border-top:1px solid var(--border);padding:var(--space-2xl) 0 var(--space-lg)}
.footer__inner{display:flex;align-items:center;justify-content:center;flex-direction:column;gap:var(--space-md);text-align:center}
.footer__brand{display:flex;align-items:center;justify-content:center}
.footer__logo{height:70px;width:auto}
.footer__brand:hover{opacity:0.8}
.logo-subtitle{fill:#111111;transition:fill var(--transition-base)}
[data-theme="dark"] .logo-subtitle{fill:#e0e0e0}
.footer__links{display:flex;gap:var(--space-lg)}
.footer__link{font-size:var(--text-sm);color:var(--text-muted);transition:color var(--transition-fast)}
.footer__link:hover{color:var(--primary)}
.footer__copy{width:100%;text-align:center;font-size:var(--text-xs);color:var(--text-muted);margin-top:var(--space-lg);padding-top:var(--space-lg);border-top:1px solid var(--border)}

/* SCROLL TO TOP */
.scroll-top{position:fixed;bottom:var(--space-lg);right:var(--space-lg);width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;border:none;display:flex;align-items:center;justify-content:center;font-size:1.2rem;box-shadow:var(--shadow-glow);cursor:pointer;opacity:0;visibility:hidden;transform:translateY(20px);transition:all var(--transition-base);z-index:100}
.scroll-top.visible{opacity:1;visibility:visible;transform:translateY(0)}
.scroll-top:hover{background:var(--primary-hover);transform:translateY(-2px)}

/* ANIMATIONS */
.fade-in{opacity:0;transform:translateY(24px);transition:opacity 0.6s ease,transform 0.6s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}
.fade-in-left{opacity:0;transform:translateX(-24px);transition:opacity 0.6s ease,transform 0.6s ease}
.fade-in-left.visible{opacity:1;transform:translateX(0)}
.fade-in-right{opacity:0;transform:translateX(24px);transition:opacity 0.6s ease,transform 0.6s ease}
.fade-in-right.visible{opacity:1;transform:translateX(0)}

/* RESPONSIVE */
@media(max-width:1024px){
  .services-grid,.testimonials-grid{grid-template-columns:repeat(2,1fr)}
  .about-grid,.contact-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
  .navbar__menu{display:none;position:fixed;top:var(--nav-height);left:0;right:0;bottom:0;background:var(--bg);flex-direction:column;padding:var(--space-xl);gap:var(--space-sm);z-index:999}
  .navbar__menu.open{display:flex}
  .navbar__menu.open .navbar__link{background:var(--primary);color:#fff}
  .navbar__menu.open .navbar__link:hover,.navbar__menu.open .navbar__link.active{background:var(--primary-hover)}
  .navbar__link{width:100%;padding:var(--space-md);font-size:var(--text-lg)}
  .hamburger{display:flex}
  .navbar__logo{height:60px}
  .hero__title{font-size:var(--text-3xl)}
  .hero__stats{flex-direction:column;gap:var(--space-lg)}
  .services-grid,.portfolio-grid,.testimonials-grid{grid-template-columns:1fr}
  .section{padding:var(--space-3xl) 0}
  .section-header__title{font-size:var(--text-3xl)}
  .form-row{grid-template-columns:1fr}
  .cta__title{font-size:var(--text-3xl)}
}
@media(max-width:480px){
  .navbar__logo{height:48px}
  .hero__title{font-size:var(--text-2xl)}
  .hero__actions{flex-direction:column}
  .hero__actions .btn{width:100%}
  .container{padding:0 var(--space-md)}
}