/* Local Inter font (TrueType) */
@font-face {
  font-family: "Inter";
  src: url("../fonts/Inter.ttf") format("truetype");
  font-weight: 400;   /* adjust if it’s Regular, use 700 for Bold, etc. */
  font-style: normal;
  font-display: swap;
}

body {
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}

/* Reset and Base */
html{box-sizing:border-box;-webkit-text-size-adjust:100%}
*,*::before,*::after{box-sizing:inherit}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Inter',sans-serif;line-height:1.6;color:#ffffff;background:#1B2123;overflow-x:hidden}
img,svg,video{max-width:100%;height:auto;display:block}

/* Fluid type scale */
:root{
  --step--1: clamp(0.88rem, 0.85rem + 0.2vw, 0.98rem);
  --step-0 : clamp(1.00rem, 0.95rem + 0.4vw, 1.125rem);
  --step-1 : clamp(1.25rem, 1.10rem + 1.2vw, 1.75rem);
  --step-2 : clamp(1.75rem, 1.50rem + 2.2vw, 2.50rem);
  --step-3 : clamp(2.25rem, 1.80rem + 3.5vw, 3.25rem);
}
body{font-size:var(--step-0)}
h1{font-size:var(--step-3);line-height:1.1}
h2{font-size:var(--step-2);line-height:1.15}
p{font-size:var(--step-0)}

/* Container */
.container{width:min(1100px,100% - 2rem);margin-inline:auto}
@media (max-width:768px){.container{width:min(1200px,100% - 1.5rem)}}
@media (max-width:480px){.container{width:min(1200px,100% - 2rem)}}

/* Navbar */
.navbar{position:fixed;top:0;left:0;right:0;background:rgba(27,33,35,.95);backdrop-filter:blur(10px);z-index:1000;box-shadow:0 2px 20px rgba(0,0,0,.3)}
.nav-container{width:min(1100px,100% - 2rem);margin:0 auto;display:flex;justify-content:space-between;align-items:center;height:70px}
.nav-logo a{font-weight:700;color:#fff;text-decoration:none;font-size:1.3em}
.nav-menu{display:flex;list-style:none;gap:2rem}
.nav-link{color:#fff;text-decoration:none;font-weight:500;position:relative}
.nav-link::after{content:'';position:absolute;left:0;bottom:-5px;height:2px;width:0;background:#00d4ff;transition:width .3s ease}
.nav-link:hover::after{width:100%}
.nav-toggle{display:none;background:none;border:0;width:44px;height:44px}
.nav-toggle span{display:block;height:2px;margin:7px 0;background:#fff}

@media (max-width:768px){
  .nav-toggle{display:block}
  .nav-menu{position:absolute;top:100%;left:0;right:0;display:none;flex-direction:column;gap:0;background:rgba(27,33,35,.98);border-top:1px solid rgba(255,255,255,.08);padding:.75rem 1rem}
  .nav-menu.open{display:flex}
  .nav-menu a{padding:.75rem 0;width:100%}
}

/* Hero */
.hero{min-height:calc(100vh - 64px);display:grid;align-items:center;color:#fff;padding-top:calc(72px + env(safe-area-inset-top, 0px));position:relative;overflow:hidden;background-image:linear-gradient(135deg, rgba(27,33,35,.88) 0%, rgba(42,50,53,.66) 50%, rgba(27,33,35,.88) 100%), url('../images/background.png');background-size:cover;background-position:center bottom;background-repeat:no-repeat}
.hero::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 30% 50%, rgba(0,212,255,.10) 0%, transparent 50%);pointer-events:none}
/* Fade-out overlay into next section */
.hero::after{content:'';position:absolute;left:0;right:0;bottom:0;height:140px;background:linear-gradient(180deg, rgba(27,33,35,0) 0%, rgba(27,33,35,1) 100%);pointer-events:none}
.hero-container{width:min(1100px,100% - 2rem);margin-inline:auto;display:grid;grid-template-columns:1fr 1fr;gap:4rem;align-items:center}
.hero-content{max-width:760px}
.hero-title{font-size:clamp(1.9rem,6vw,3.5rem);font-weight:700;line-height:1.2;margin:0 0 1.5rem}
.hero-description{font-size:clamp(1rem,3.8vw,1.2rem);opacity:.9;line-height:1.6;margin:0 0 2rem}
.hero-buttons{display:flex;gap:1rem;flex-wrap:wrap}
.hero-image{display:flex;align-items:center;justify-content:center}
.hero-img{max-width:100%;height:auto}
.hero-placeholder{width:300px;height:300px;background:rgba(0,212,255,.1);border-radius:50%;display:flex;align-items:center;justify-content:center;border:2px solid rgba(0,212,255,.3);backdrop-filter:blur(10px);box-shadow:0 0 50px rgba(0,212,255,.2)}

/* Buttons */
.btn{display:inline-block;padding:12px 30px;border-radius:50px;text-decoration:none;font-weight:600;transition:all .3s ease;border:0;cursor:pointer;font-size:1rem}
a,button{min-height:44px}
@media (max-width:480px){.btn{width:100%}}
.btn-primary{background:linear-gradient(135deg,#00d4ff 0%,#0099cc 100%);color:#fff}
.btn-primary:hover{background:linear-gradient(135deg,#0099cc 0%,#007799 100%);transform:translateY(-2px);box-shadow:0 10px 25px rgba(0,212,255,.3)}
.btn-secondary{background:transparent;color:#fff;border:2px solid #fff}
.btn-secondary:hover{background:#fff;color:#1B2123;transform:translateY(-2px)}

/* Prefer modern viewport units when supported */
@supports (height: 100dvh){
  .hero{min-height:calc(100dvh - 64px)}
}

/* Sections */
.section-header{text-align:center;margin:0 0 4rem}
.section-header h2{font-weight:700;margin:0 0 1rem;color:#fff}
.section-header p{color:#a0a0a0;max-width:600px;margin:0 auto}
.about,.services,.projects,.contact{position:relative;padding:100px 0;scroll-margin-top:80px}
.about{background:#1B2123}
.services{background:#171d1f}
.projects{background:#141a1c}
.projects-content ul{list-style:disc inside;margin-left:1rem}
.projects-content li{margin:.4rem 0}
.contact{background:#10171a}

/* Grids */
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem;margin-top:2rem}
.services-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.5rem}
@media (max-width:992px){.grid-3{grid-template-columns:repeat(2,1fr)}}
@media (max-width:768px){.grid-3{grid-template-columns:1fr}}

/* Cards */
.feature,.service-card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:15px;box-shadow:0 5px 20px rgba(0,0,0,.3);padding:2rem;transition:transform .3s ease}
.feature:hover,.service-card:hover{transform:translateY(-6px)}
.service-icon{width:80px;height:80px;margin:0 auto 1.5rem;border-radius:50%;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#00d4ff,#0099cc);box-shadow:0 5px 15px rgba(0,212,255,.3)}
.service-icon i{color:#fff;font-size:2rem}

/* Contact */
.contact-content{display:grid;grid-template-columns:1fr 1fr;gap:4rem;max-width:1000px;margin:0 auto}
.contact-info{display:flex;flex-direction:column;gap:2rem}
.contact-item{display:flex;align-items:center;gap:1rem;padding:1.5rem;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:10px}
.contact-item i{font-size:1.5rem;color:#00d4ff;width:40px;text-align:center}
.contact-form{background:rgba(255,255,255,.05);padding:2rem;border-radius:15px;border:1px solid rgba(255,255,255,.1)}
.form-group{margin-bottom:1.5rem}
.form-group input,.form-group textarea{width:100%;padding:12px 15px;border:2px solid rgba(255,255,255,.2);border-radius:8px;font-size:1rem;background:rgba(255,255,255,.05);color:#fff}
.form-group input:focus,.form-group textarea:focus{outline:none;border-color:#00d4ff;background:rgba(255,255,255,.1)}

/* Footer */
.footer{background:#0f1416;color:#fff;padding:60px 0 20px;border-top:1px solid rgba(255,255,255,.1)}
.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem;margin-bottom:2rem}
.footer-section ul{list-style:none}
.footer-section ul li{margin-bottom:.5rem}
.footer-section ul li a{color:#d1d5db;text-decoration:none}
.social-links{display:flex;gap:1rem;margin-top:1.5rem}
.social-links a{width:40px;height:40px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;text-decoration:none;transition:all .3s ease}
.social-links a:hover{background:#00d4ff;transform:translateY(-2px);box-shadow:0 5px 15px rgba(0,212,255,.3)}

/* Responsive tweaks */
@media (max-width:768px){
  .hero-container{grid-template-columns:1fr;gap:2rem;text-align:left}
  .container{padding-left:1rem;padding-right:1rem}
  .nav-container{padding-left:1rem;padding-right:1rem}
  .hero-description{max-width:65ch}
  .hero-buttons{flex-direction:column;align-items:flex-start}
  .about,.services,.projects,.contact{padding:64px 0}
  .section-header{margin:0 0 3rem}
  .contact-content{grid-template-columns:1fr;gap:2rem}
  .features-grid{grid-template-columns:1fr}
  .services-grid{grid-template-columns:1fr}
}
@media (max-width:480px){
  .hero{padding-top:calc(72px + env(safe-area-inset-top, 0px))}
  .hero-title{font-size:clamp(1.75rem,8vw,2.4rem);line-height:1.18;letter-spacing:-.01em;margin-bottom:12px}
  .hero-description{font-size:clamp(1rem,3.7vw,1.0625rem);line-height:1.6;letter-spacing:.005em;margin-bottom:16px}
  .hero-buttons{gap:10px}
  .hero-buttons .btn{width:100%;padding:14px 16px}
  .hero-placeholder{width:220px;height:220px;opacity:.85;transform:scale(.8);transform-origin:center}
  .about,.services,.projects,.contact{padding:56px 0}
  .section-header{margin:0 0 2.25rem}
}

/* Tablet adjustments (481–768px) */
@media (min-width:481px) and (max-width:768px){
  .hero{min-height:calc(100svh - 72px)}
  .hero-title{font-size:clamp(2.1rem,5vw,2.8rem)}
}

/* Preserve desktop look (≥1024px) */
@media (min-width:1024px){
  .hero{min-height:clamp(520px,70vh,880px);padding-top:70px}
}


/* Visually hidden utility for labels */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}