/* File: /styles.css */
/* Design tokens */
:root{
  --bg-dark:#0d0d0d;
  --bg-dark-2:#111111;
  --bg-light:#f2f2f2;
  --bg-light-2:#e6e6e6;
  --text-dark:#333333;
  --text-light:#ffffff;
  --accent:#e10600;
  --radius:16px;
  --radius-sm:12px;
  --space-xs:8px;
  --space-sm:12px;
  --space:20px;
  --space-md:28px;
  --space-lg:40px;
  --maxw:1200px;
  --shadow:0 10px 30px rgba(0,0,0,.15);
  --shadow-hover:0 16px 40px rgba(0,0,0,.25);
  --focus:0 0 0 3px rgba(225,6,0,.35);
}

/* Base */
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,'Helvetica Neue',Arial,sans-serif;
  color:var(--text-dark);
  background:#fff;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-radius:var(--radius-sm)}
a{color:inherit;text-decoration:none}
a:focus,button:focus,input:focus,textarea:focus{outline:none;box-shadow:var(--focus);border-radius:8px}
.container{
  width:min(100% - 32px, var(--maxw));
  margin-inline:auto;
}
.section{padding: clamp(64px, 8vw, 96px) 0}
.section-light{background:var(--bg-light)}
.section-dark{background:var(--bg-dark);color:var(--text-light)}
.section-head{margin-bottom:var(--space-lg)}
.section-head h2{font-size:clamp(28px,3.2vw,36px);margin:0 0 var(--space-sm)}
.section-head p{opacity:.85;margin:0}

/* Header / Nav */
.skip-link{
  position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden;
}
.skip-link:focus{left:16px;top:16px;width:auto;height:auto;background:#fff;padding:8px 12px;border-radius:8px;z-index:10000}
.site-header{
  position:sticky;top:0;z-index:1000;background:rgba(13,13,13,.9);backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.nav-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;letter-spacing:.5px}
.brand-mark{display:inline-block;background:var(--accent);padding:6px 10px;border-radius:10px}
.brand-text{opacity:.95}
.site-nav ul{display:flex;gap:22px;align-items:center;margin:0;padding:0;list-style:none}
.site-nav a{color:#fff;opacity:.9}
.site-nav a:hover,.footer-nav a:hover,.social:hover{color:var(--accent)}
.btn-small{padding:.5rem .9rem;border:1px solid rgba(255,255,255,.15);border-radius:999px}
.hamburger{
  display:none;position:relative;width:40px;height:40px;background:transparent;border:1px solid rgba(255,255,255,.15);border-radius:10px;cursor:pointer;
}
.hamburger span{position:absolute;left:8px;right:8px;height:2px;background:#fff;transition:transform .3s,opacity .3s,top .3s}
.hamburger span:nth-child(1){top:12px}
.hamburger span:nth-child(2){top:19px}
.hamburger span:nth-child(3){top:26px}
.hamburger[aria-expanded="true"] span:nth-child(1){top:19px;transform:rotate(45deg)}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0}
.hamburger[aria-expanded="true"] span:nth-child(3){top:19px;transform:rotate(-45deg)}
@media (max-width: 900px){
  .hamburger{display:inline-block}
  .site-nav{
    position:fixed;inset:64px 16px auto 16px;background:var(--bg-dark-2);border:1px solid rgba(255,255,255,.08);
    border-radius:16px;box-shadow:var(--shadow);padding:12px;transform:translateY(-20px);opacity:0;pointer-events:none;transition:opacity .2s, transform .2s;
  }
  .site-nav.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .site-nav ul{flex-direction:column;align-items:stretch}
  .btn-small{border-color:rgba(255,255,255,.12)}
}

/* Hero */
.hero{
  position:relative;min-height:72vh;display:flex;align-items:center;overflow:hidden;
}
.hero-inner{position:relative;z-index:1;text-align:left}
.hero h1{font-size:clamp(34px,6vw,64px);margin:0 0 var(--space-md);line-height:1.1}
.hero p{font-size:clamp(16px,2.2vw,20px);opacity:.9;max-width:60ch}
.hero-cta{margin-top:var(--space-md);display:flex;gap:14px;flex-wrap:wrap}
.hero-bg-anim{
  position:absolute;inset:-20% -10% auto -10%;height:120%;background:
    radial-gradient(600px 300px at 20% 20%, rgba(225,6,0,.35), transparent 60%),
    radial-gradient(700px 400px at 80% 30%, rgba(255,255,255,.06), transparent 60%);
  filter:blur(40px);animation:float 12s ease-in-out infinite alternate;
}
@keyframes float{to{transform:translateY(-20px)}}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 22px;border-radius:12px;font-weight:600;transition:transform .15s, box-shadow .2s, background .2s, color .2s}
.btn:hover{transform:translateY(-1px)}
.btn-ghost{border:1px solid rgba(255,255,255,.18);color:#fff;background:transparent}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-primary{background:#fff;color:#000}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(225,6,0,.25)}
.btn-accent:hover{box-shadow:0 10px 28px rgba(225,6,0,.35)}

/* Grid helpers */
.grid{display:grid}
.grid-3{grid-template-columns:repeat(3,1fr)}
.gap-lg{gap:var(--space-lg)}
@media (max-width: 900px){.grid-3{grid-template-columns:repeat(2,1fr)}}
@media (max-width: 600px){.grid-3{grid-template-columns:1fr}}

/* Cards */
.card{
  background:#fff;border-radius:var(--radius);padding:24px;border:1px solid #e9e9e9;box-shadow:var(--shadow);
  transition:transform .2s, box-shadow .2s;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.section-dark .card{background:#121212;border-color:#1c1c1c}
.icon-wrap{width:44px;height:44px;border-radius:10px;display:grid;place-items:center;background:var(--bg-light-2)}
.section-dark .icon-wrap{background:#1a1a1a}
.icon{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:2}

/* Portfolio */
.portfolio-card img{aspect-ratio:4/3;object-fit:cover}
.portfolio-link{display:block;position:relative;overflow:hidden;border-radius:var(--radius)}
.portfolio-link::after{
  content:"";position:absolute;inset:0;background:linear-gradient(180deg, transparent 50%, rgba(225,6,0,.18));
  opacity:0;transition:opacity .25s;
}
.portfolio-link:hover::after{opacity:1}
.portfolio-meta{display:flex;align-items:center;justify-content:space-between;padding:12px 4px;color:var(--text-dark)}
.chip{background:var(--accent);color:#fff;padding:4px 10px;border-radius:999px;font-size:12px}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-lg)}
@media (max-width: 900px){.contact-grid{grid-template-columns:1fr}}
.contact-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.form-row{display:grid;gap:8px;margin-bottom:14px}
label{font-weight:600}
input,textarea{
  width:100%;padding:14px;border-radius:10px;border:1px solid #dcdcdc;background:#fff;font:inherit;
}
input:focus,textarea:focus{border-color:var(--accent)}
.field-error{color:var(--accent);min-height:18px;font-size:13px;margin:4px 0 0}
.req{color:var(--accent)}
.form-status{margin-top:10px;font-weight:600}

/* Testimonials Carousel */
.carousel{position:relative;overflow:hidden;border-radius:var(--radius);background:rgba(255,255,255,.02);border:1px solid rgba(255,255,255,.06)}
.carousel-track{display:flex;will-change:transform;transition:transform .5s ease}
.testimonial-card{
  min-width:100%;padding:clamp(24px,4vw,40px);display:grid;gap:12px;place-content:center;text-align:center
}
.testimonial-card blockquote{font-size:clamp(16px,2.2vw,20px);margin:0}
.testimonial-card figcaption{opacity:.8}
.carousel-dots{display:flex;justify-content:center;gap:10px;padding:14px}
.dot{
  width:10px;height:10px;border-radius:999px;border:1px solid rgba(255,255,255,.5);background:transparent;cursor:pointer
}
.dot.is-active,.dot:hover{background:var(--accent);border-color:var(--accent)}
@media (prefers-reduced-motion: reduce){
  .carousel-track{transition:none}
  .hero-bg-anim{animation:none}
}

/* Footer */
.site-footer{padding:40px 0;background:var(--bg-dark);color:#fff;border-top:1px solid rgba(255,255,255,.06)}
.footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:var(--space-lg);align-items:start}
@media (max-width: 900px){.footer-grid{grid-template-columns:1fr}}
.footer-nav{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.socials{display:flex;gap:14px;align-items:center}
.social-icon{width:20px;height:20px;fill:none;stroke:#fff;stroke-width:2}

/* Reveal on scroll */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease, transform .6s ease}
.reveal.visible{opacity:1;transform:none}

/* --- Floating WhatsApp FAB --- */
.fab{
  position:fixed;
  right:20px;bottom:20px;
  width:56px;height:56px;
  display:grid;place-items:center;
  color:#fff;background:var(--bg-dark);
  border:1px solid #1c1c1c;border-radius:999px;
  box-shadow:0 6px 16px rgba(0,0,0,.35), 0 0 0 0 rgba(225,6,0,.45);
  transition:transform .15s ease, box-shadow .3s ease, background .2s ease;
  z-index:1100;
  isolation:isolate; /* Why: keeps glow effect clean above content */
}
.fab:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,0,0,.45), 0 0 0 10px rgba(225,6,0,.18)}
.fab:focus{box-shadow:0 0 0 3px rgba(255,255,255,.2), 0 0 0 9px rgba(225,6,0,.35)}
.fab-icon{width:26px;height:26px}
.fab::after{
  content:"";position:absolute;inset:-6px;pointer-events:none;border-radius:inherit;
  box-shadow:0 0 24px 6px rgba(225,6,0,.45);
  opacity:.6;filter:blur(2px);
  animation:fabPulse 2.4s ease-in-out infinite;
}
@keyframes fabPulse{
  0%,100%{opacity:.55;transform:scale(1)}
  50%{opacity:.85;transform:scale(1.06)}
}
.fab-tooltip{
  position:absolute;right:68px;bottom:50%;
  transform:translateY(50%) translateX(8px);
  background:#111;color:#fff;border:1px solid #222;
  padding:6px 10px;border-radius:8px;font-size:12px;white-space:nowrap;
  box-shadow:0 10px 20px rgba(0,0,0,.25);
  opacity:0;pointer-events:none;transition:opacity .15s, transform .15s;
}
.fab:hover .fab-tooltip{opacity:1;transform:translateY(50%) translateX(0)}
@media (max-width: 600px){
  .fab{right:16px;bottom:16px;width:54px;height:54px}
  .fab-tooltip{display:none}
}
@media (prefers-reduced-motion: reduce){
  .fab::after{animation:none}
}

/* Utilities */
.small{font-size:.9rem;opacity:.9}