/* =============================================
   IVANTATECH — DESIGN SYSTEM (LIGHT · SOFTWARE)
   Palette: Vibrant Tech Green + Clean Slate
   ============================================= */

:root {
  --bg-main: #131313;
  --bg-white: #1c1b1b;
  --bg-section-alt: #0e0e0e;
  --bg-hero: linear-gradient(160deg, #0e0e0e 0%, #131313 100%);

  --text-heading: #ffffff;
  --text-body: #e5e2e1;
  --text-muted: #a98a7d;
  --text-light: #e2bfb0;

  --accent-1: #ff6b00;
  --accent-2: #ffb693;
  --accent-3: #561f00;
  --accent-glow: rgba(255,107,0,.15);

  --gradient-hero: linear-gradient(135deg, #ff6b00 0%, #ffb693 100%);
  --gradient-cta:  linear-gradient(135deg, #ff6b00 0%, #ffb693 100%);

  --border-light: #353534;
  --border-card: #2a2a2a;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,.1);
  --shadow-card: 0 4px 24px rgba(0,0,0,.2);
  --shadow-card-hover: 0 12px 40px rgba(255,107,0,.15);
  --shadow-lg: 0 20px 60px rgba(0,0,0,.3);

  --font-heading: 'Geist', sans-serif;
  --font-body: 'Geist', sans-serif;

  --ease-out: cubic-bezier(.22,1,.36,1);
  --ease-spring: cubic-bezier(.34,1.56,.64,1);
}

/* ============ RESET ============ */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{font-family:var(--font-body);background:var(--bg-main);color:var(--text-body);line-height:1.65;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}
button{cursor:pointer;border:none;background:none;font-family:inherit}
input,textarea{font-family:inherit}



/* ============ UTILITY ============ */
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:120px 0}
.section-tag{font-family:var(--font-heading);font-size:.8rem;font-weight:600;letter-spacing:3px;text-transform:uppercase;color:var(--accent-1);margin-bottom:12px}
.section-title{font-family:var(--font-heading);font-size:clamp(2rem,4vw,3rem);font-weight:800;line-height:1.15;margin-bottom:16px;color:var(--text-heading)}
.section-sub{max-width:580px;color:var(--text-light);font-size:1.05rem;margin-bottom:56px}
.gradient-text{background:var(--gradient-hero);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

/* ============ BUTTONS ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 32px;font-size:.95rem;font-weight:600;border-radius:var(--radius-md);transition:all .35s var(--ease-out);letter-spacing:.3px}
.btn-primary{background:var(--gradient-cta);color:#fff;box-shadow:0 4px 24px rgba(23,201,100,.2)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 36px rgba(23,201,100,.3)}
.btn-outline{border:1.5px solid var(--border-light);color:var(--text-heading);background:var(--bg-white)}
.btn-outline:hover{border-color:var(--accent-1);background:rgba(23,201,100,.04);transform:translateY(-2px)}
.btn-lg{padding:18px 44px;font-size:1.05rem;border-radius:var(--radius-lg)}
.btn-full{width:100%}

/* ============ NAVBAR ============ */
.navbar {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 48px);
  max-width: 1200px;
  z-index: 1000;
  padding: 14px 0;
  border-radius: 100px;
  background: rgba(19, 19, 19, 0.5);
  backdrop-filter: blur(12px) saturate(1.5);
  -webkit-backdrop-filter: blur(12px) saturate(1.5);
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: all 0.4s var(--ease-out);
}
.navbar.scrolled {
  padding: 10px 0;
  background: rgba(19, 19, 19, 0.85);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  border-color: rgba(255, 255, 255, 0.1);
}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between}
.logo{font-family:var(--font-heading);font-size:1.55rem;font-weight:800;letter-spacing:-.5px;color:var(--text-heading)}
.logo span{color:var(--accent-1)}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-links a{font-size:.9rem;font-weight:500;color:var(--text-light);transition:color .3s;position:relative}
.nav-links a::after{content:'';position:absolute;bottom:-4px;left:0;right:0;height:2px;background:var(--accent-1);transform:scaleX(0);transform-origin:right;transition:transform .35s var(--ease-out)}
.nav-links a:hover{color:var(--text-heading)}
.nav-links a:hover::after{transform:scaleX(1);transform-origin:left}
.nav-cta{background:rgba(23,201,100,.06)!important;color:var(--accent-1)!important;padding:10px 22px!important;border-radius:var(--radius-md)!important;border:1px solid rgba(23,201,100,.18)!important}
.nav-cta::after{display:none!important}
.nav-cta:hover{background:rgba(23,201,100,.12)!important}
.mobile-toggle{display:none;flex-direction:column;gap:5px;padding:4px}
.mobile-toggle span{width:24px;height:2px;background:var(--text-heading);border-radius:2px;transition:all .3s var(--ease-out)}
.nav-logo { height: 38px; width: auto; display: block; }

/* ============ HERO ============ */
.hero{min-height:100vh;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;padding:120px 24px 80px;background:var(--bg-hero);z-index:1}
.hero::before{content:'';position:absolute;top:-40%;right:-20%;width:800px;height:800px;border-radius:50%;background:radial-gradient(circle,rgba(23,201,100,.05) 0%,transparent 70%);pointer-events:none}
.gradient-blinds-container {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 0;
  pointer-events: none;
}
.beams-container {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 0;
  pointer-events: none;
}
.hero-orb{position:absolute;top:50%;left:55%;transform:translate(-50%,-50%);width:700px;height:700px;max-width:95vw;max-height:95vh;z-index:0;opacity:.45;cursor:pointer;pointer-events:auto}
.hero-orb canvas{display:block;width:100%!important;height:100%!important}
.hero-content{position:relative;z-index:1;max-width:780px;text-align:center}
.hero-tag{font-family:var(--font-heading);font-size:.8rem;font-weight:600;letter-spacing:3px;text-transform:uppercase;color:var(--accent-1);margin-bottom:20px}
.hero-title{font-family:var(--font-heading);font-size:clamp(2.8rem,6vw,4.5rem);font-weight:900;line-height:1.08;margin-bottom:24px;letter-spacing:-1px;color:var(--text-heading)}
.hero-sub{font-size:1.15rem;color:var(--text-light);max-width:560px;margin:0 auto 40px;line-height:1.75}
.hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.hero-stats-row{display:flex;justify-content:center;gap:48px;margin-top:64px;padding-top:32px;border-top:1px solid var(--border-light)}
.hero-stat strong{display:block;font-family:var(--font-heading);font-size:1.5rem;font-weight:800;color:var(--text-heading)}
.hero-stat span{font-size:.82rem;color:var(--text-muted)}

/* ============ SERVICES SHOWCASE ============ */
.srv-showcase{background:var(--bg-section-alt);color:var(--text-body);overflow:hidden;position:relative;z-index:2}
.srv-header{padding:100px 0 60px;text-align:center}
.srv-tag{font-family:var(--font-heading);font-size:.75rem;font-weight:600;letter-spacing:4px;text-transform:uppercase;color:var(--accent-1);margin-bottom:16px;opacity:.9}
.srv-title{font-family:var(--font-heading);font-size:clamp(2.8rem,6vw,5rem);font-weight:900;line-height:1.05;letter-spacing:-2px;color:var(--text-heading)}
.srv-title em{font-style:normal;background:linear-gradient(135deg,var(--accent-1),#22c55e);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.srv-panels{max-width:1200px;margin:0 auto;padding:0 24px 100px;position:relative;display:grid;grid-template-columns:1fr 1fr 1fr;gap:32px;align-items:start}

.srv-col-left {
  padding-top: 80px;
}
.srv-col-center {
  padding-top: 0px;
}
.srv-col-right {
  padding-top: 160px;
}

.srv-panel-wrap {
  position: sticky;
  top: 120px;
  margin-bottom: 60px;
  transform-origin: top center;
  will-change: transform, opacity;
}

/* Individual panel */
.srv-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  gap: 20px;
  padding: 32px 32px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 182, 147, 0.05) 100%);
  backdrop-filter: blur(24px) saturate(1.8);
  -webkit-backdrop-filter: blur(24px) saturate(1.8);
  border: 1px solid rgba(255, 182, 147, 0.12);
  border-radius: 24px;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4), inset 0 0 80px rgba(255, 255, 255, 0.02);
  overflow: hidden;
  cursor: pointer;
  transition: all 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}
.srv-panel:hover {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 182, 147, 0.09) 100%);
  border-color: rgba(255, 182, 147, 0.25);
  box-shadow: 0 12px 40px 0 rgba(0, 0, 0, 0.5), inset 0 0 80px rgba(255, 182, 147, 0.04);
}

/* Dark ambient glow on hover */
.srv-panel-bg{position:absolute;inset:0;opacity:0;transition:opacity .6s ease;background:radial-gradient(ellipse 60% 80% at 75% 50%,var(--accent-glow),transparent);pointer-events:none;z-index:0}
.srv-panel:hover .srv-panel-bg{opacity:1}

/* Content side */
.srv-panel-content{position:relative;z-index:1}
.srv-num{font-family:var(--font-heading);font-size:.65rem;font-weight:700;letter-spacing:3px;color:var(--text-muted);display:block;margin-bottom:12px}
.srv-name{font-family:var(--font-heading);font-size:clamp(1.3rem,2.5vw,1.8rem);font-weight:900;line-height:1.1;letter-spacing:-0.5px;margin-bottom:12px;color:var(--text-heading);transition:color .4s}
.srv-panel:hover .srv-name{color:var(--accent-1)}

.srv-desc{font-size:.85rem;color:var(--text-light);line-height:1.6;margin-bottom:0;transition:all .5s;max-height:0;overflow:hidden;opacity:0}
.srv-panel:hover .srv-desc{max-height:120px;opacity:1;margin-bottom:16px}

.srv-features{list-style:none;padding:0;margin:0 0 16px;max-height:0;overflow:hidden;opacity:0;transition:all .5s cubic-bezier(.22,1,.36,1) .1s}
.srv-panel:hover .srv-features{max-height:200px;opacity:1}
.srv-features li{position:relative;padding:4px 0 4px 16px;font-size:.8rem;color:var(--text-body);line-height:1.5}
.srv-features li::before{content:'→';position:absolute;left:0;color:var(--accent-1);font-size:.7rem}

.srv-cta{display:inline-flex;align-items:center;gap:8px;padding:8px 20px;font-size:.8rem;font-weight:600;color:var(--text-heading);background:var(--bg-section-alt);border:1px solid var(--border-light);border-radius:50px;transition:all .35s var(--ease-out);text-decoration:none;opacity:0;transform:translateY(10px);max-height:0;overflow:hidden}
.srv-panel:hover .srv-cta{opacity:1;transform:translateY(0);max-height:50px;margin-top:4px}
.srv-cta:hover{background:var(--accent-1);border-color:var(--accent-1);color:#fff}

/* Visual side — ring + icon */
.srv-panel-visual{position:relative;z-index:1;display:flex;align-items:center;justify-content:center;height:140px;width:100%;order:-1}
.srv-ring{position:absolute;width:110px;height:110px;border-radius:50%;border:1px solid var(--border-light);transition:all .7s cubic-bezier(.22,1,.36,1)}
.srv-panel:hover .srv-ring{width:140px;height:140px;border-color:var(--accent-1);box-shadow:0 0 40px var(--accent-glow),inset 0 0 30px var(--accent-glow)}
.srv-icon-lg{width:40px;height:40px;color:var(--text-muted);transition:all .5s cubic-bezier(.22,1,.36,1);position:relative;z-index:1}
.srv-panel:hover .srv-icon-lg{color:var(--accent-1);transform:scale(1.15)}

/* Responsive */
@media(max-width:900px){
  .srv-panels{grid-template-columns:1fr;padding:0 24px 60px}
  .srv-col-left,.srv-col-center,.srv-col-right{padding-top:0}
  .srv-panel{padding:40px 24px;text-align:center;align-items:center}
  .srv-panel-visual{height:140px}
  .srv-ring{width:120px;height:120px}
  .srv-panel:hover .srv-ring{width:150px;height:150px}
  .srv-icon-lg{width:48px;height:48px}
  .srv-desc,.srv-features{max-height:none;opacity:1;margin-bottom:12px}
  .srv-cta{opacity:1;transform:none;max-height:none}
  .srv-panel:hover{transform:none}
}


/* ============ PORTFOLIO ============ */
.portfolio{background:var(--bg-section-alt)}
.portfolio-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:28px}
.portfolio-card{border-radius:var(--radius-lg);overflow:hidden;background:var(--bg-white);border:1px solid var(--border-card);transition:all .4s var(--ease-out); perspective: 1000px;}
.portfolio-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-card-hover);border-color:rgba(23,201,100,.12)}
.portfolio-card-inner {
  position: relative; width: 100%; height: 100%;
  transform-style: preserve-3d;
  transition: transform .6s var(--ease-out);
}
.portfolio-card:hover .portfolio-card-inner { transform: rotateY(180deg); }
.portfolio-card-front, .portfolio-card-back {
  position: absolute; inset: 0; backface-visibility: hidden; border-radius: var(--radius-lg);
}
.portfolio-card-front {
  position: relative; /* Overriding absolute for normal flow sizing */
}
.portfolio-card-back {
  transform: rotateY(180deg);
  background: var(--gradient-hero);
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; padding: 32px; color: #fff; gap: 12px;
}
.portfolio-img{height:200px;position:relative;display:flex;align-items:flex-end;padding:16px}
.portfolio-overlay{position:absolute;inset:0;background:rgba(0,0,0,.2);display:flex;align-items:flex-end;padding:16px;opacity:0;transition:opacity .35s}
.portfolio-card:hover .portfolio-overlay{opacity:1}
.portfolio-label{background:rgba(255,255,255,.92);backdrop-filter:blur(8px);padding:6px 14px;border-radius:var(--radius-sm);font-size:.78rem;font-weight:600;letter-spacing:.5px;text-transform:uppercase;color:var(--text-heading)}
.portfolio-info{padding:24px}
.portfolio-info h3{font-family:var(--font-heading);font-size:1.15rem;font-weight:700;margin-bottom:8px;color:var(--text-heading)}
.portfolio-info p{color:var(--text-light);font-size:.9rem;margin-bottom:16px;line-height:1.65}
.portfolio-tech{display:flex;gap:8px;flex-wrap:wrap}
.portfolio-tech span{background:rgba(23,201,100,.06);color:var(--accent-1);font-size:.75rem;font-weight:600;padding:4px 12px;border-radius:50px;letter-spacing:.3px}

/* ============ ABOUT (Process) ============ */
.process{background:var(--bg-white);position:relative;z-index:3}
.process-timeline{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:28px;position:relative}
.process-step{background:var(--bg-section-alt);border:1px solid var(--border-card);border-radius:var(--radius-lg);padding:40px 32px;transition:all .4s var(--ease-out);position:relative}
.process-step:hover{transform:translateY(-6px);border-color:rgba(23,201,100,.18);box-shadow:var(--shadow-card-hover)}
.step-number{font-family:var(--font-heading);font-size:3rem;font-weight:900;background:var(--gradient-hero);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1;margin-bottom:20px}
.step-content h3{font-family:var(--font-heading);font-size:1.2rem;font-weight:700;margin-bottom:10px;color:var(--text-heading)}
.step-content p{color:var(--text-light);font-size:.92rem;line-height:1.7}

/* ============ TESTIMONIALS ============ */
.testimonials{background:var(--bg-section-alt);position:relative;z-index:4}
.testimonial-slider{position:relative;overflow:hidden}
.testimonial-track{display:flex;transition:transform .6s var(--ease-out)}
.testimonial-card{min-width:100%;padding:48px;background:var(--bg-white);border:1px solid var(--border-card);border-radius:var(--radius-xl)}
.testimonial-stars{color:#f59e0b;font-size:1.2rem;margin-bottom:20px;letter-spacing:3px}
.testimonial-card>p{font-size:1.15rem;line-height:1.8;color:var(--text-light);margin-bottom:28px;font-style:italic}
.testimonial-author{display:flex;align-items:center;gap:14px}
.author-avatar{width:48px;height:48px;border-radius:50%;flex-shrink:0}
.testimonial-author strong{display:block;font-size:.95rem;color:var(--text-heading)}
.testimonial-author span{font-size:.82rem;color:var(--text-muted)}
.testimonial-nav{display:flex;align-items:center;justify-content:center;gap:16px;margin-top:32px}
.t-nav-btn{width:44px;height:44px;border-radius:50%;border:1px solid var(--border-light);color:var(--text-heading);font-size:1rem;display:flex;align-items:center;justify-content:center;transition:all .3s;background:var(--bg-white)}
.t-nav-btn:hover{border-color:var(--accent-1);background:rgba(23,201,100,.05);color:var(--accent-1)}
.t-dots{display:flex;gap:8px}
.t-dot{width:8px;height:8px;border-radius:50%;background:var(--text-muted);transition:all .3s;cursor:pointer;border:none}
.t-dot.active{background:var(--accent-1);width:24px;border-radius:4px}

/* ============ CTA ============ */
.cta{background:var(--gradient-cta);text-align:center;position:relative;overflow:hidden;z-index:5}
.cta::before{content:'';position:absolute;width:500px;height:500px;background:rgba(255,255,255,.1);border-radius:50%;top:-200px;right:-100px}
.cta::after{content:'';position:absolute;width:300px;height:300px;background:rgba(0,0,0,.06);border-radius:50%;bottom:-100px;left:-50px}
.cta-inner{position:relative;z-index:1}
.cta h2{font-family:var(--font-heading);font-size:clamp(2rem,4vw,2.8rem);font-weight:800;margin-bottom:16px;color:#fff}
.cta p{font-size:1.1rem;color:rgba(255,255,255,.85);max-width:520px;margin:0 auto 36px}
.cta .btn-primary{background:#fff!important;color:var(--accent-3)!important;box-shadow:0 4px 24px rgba(0,0,0,.15);font-weight:700}
.cta .btn-primary:hover{box-shadow:0 8px 36px rgba(0,0,0,.2)}

/* ============ CONTACT ============ */
.contact{background:var(--bg-white);position:relative;z-index:6}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.contact-info p{color:var(--text-light);margin-bottom:32px;font-size:1rem}
.contact-details{display:flex;flex-direction:column;gap:20px;margin-bottom:32px}
.contact-detail{display:flex;align-items:center;gap:14px;color:var(--text-body);font-size:.95rem}
.contact-detail svg{width:20px;height:20px;color:var(--accent-1);flex-shrink:0}
.social-links{display:flex;gap:12px}
.social-link{width:42px;height:42px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);background:var(--bg-section-alt);border:1px solid var(--border-card);color:var(--text-light);transition:all .3s}
.social-link svg{width:18px;height:18px}
.social-link:hover{border-color:var(--accent-1);color:var(--accent-1);transform:translateY(-2px);background:rgba(23,201,100,.05)}
.contact-form{background:var(--bg-section-alt);border:1px solid var(--border-card);border-radius:var(--radius-xl);padding:40px}
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:.85rem;font-weight:600;color:var(--text-body);margin-bottom:8px}
.form-group input,.form-group textarea{width:100%;padding:14px 18px;background:var(--bg-white);border:1px solid var(--border-light);border-radius:var(--radius-md);color:var(--text-heading);font-size:.95rem;transition:border-color .3s,box-shadow .3s;outline:none}
.form-group input::placeholder,.form-group textarea::placeholder{color:var(--text-muted)}
.form-group input:focus,.form-group textarea:focus{border-color:var(--accent-1);box-shadow:0 0 0 3px rgba(23,201,100,.1)}
.form-group textarea{resize:vertical;min-height:120px}

/* ============ FOOTER ============ */
.footer{padding:40px 0;border-top:1px solid var(--border-light);background:var(--bg-main);position:relative;z-index:7}
.footer-inner{display:flex;align-items:center;justify-content:space-between}
.footer p{color:var(--text-muted);font-size:.85rem}

/* ============ ANIMATIONS ============ */
.reveal {
  opacity: 0;
  transform: perspective(900px) rotateX(10deg) translateY(36px);
  transition: opacity .65s var(--ease-out), transform .65s var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: perspective(900px) rotateX(0deg) translateY(0);
}

/* ============ PORTFOLIO PAGE ============ */
.portfolio-hero{padding-top:160px;padding-bottom:40px}
.active-link{color:var(--accent-1)!important}
.active-link::after{transform:scaleX(1)!important;transform-origin:left!important}

/* ============ RESPONSIVE ============ */
@media(max-width:900px){.about-grid{grid-template-columns:1fr}.about-visual{display:none}.contact-grid{grid-template-columns:1fr}}
@media(max-width:768px){.section{padding:80px 0}.mobile-toggle{display:flex}.nav-links{position:fixed;top:0;right:-100%;width:280px;height:100vh;background:var(--bg-white);flex-direction:column;padding:80px 32px 32px;gap:24px;transition:right .4s var(--ease-out);box-shadow:-8px 0 40px rgba(0,0,0,.1)}.nav-links.open{right:0}.hero-stats-row{gap:24px}.hero-title{font-size:clamp(2.2rem,8vw,3.5rem)}.testimonial-card{padding:28px}.footer-inner{flex-direction:column;gap:12px;text-align:center}.portfolio-hero{padding-top:120px}}