/* ===== Casarinotech — Design Tokens ===== */
:root{
  --bg: #0d0f16;
  --bg-alt: #12151f;
  --card-bg: #171b28;
  --card-border: #262c3f;
  --blue: #2f9bf4;
  --blue-light: #4fc3f7;
  --blue-dark: #1565c0;
  --text: #f5f7fa;
  --text-muted: #9aa3b8;
  --radius: 14px;
  --container: 1180px;
  --shadow: 0 20px 40px -20px rgba(0,0,0,.5);
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1,h2,h3{
  font-family:'Poppins', 'Inter', sans-serif;
  line-height: 1.25;
  margin: 0 0 .6em;
}
p{ margin: 0 0 1em; color: var(--text-muted); }
a{ color: inherit; text-decoration: none; }
ul{ list-style:none; margin:0; padding:0; }
img{ max-width: 100%; display:block; }
button{ font-family: inherit; cursor:pointer; }

.container{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow{
  display:inline-block;
  color: var(--blue-light);
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-size: .8rem;
  margin-bottom: .6em;
}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: .5em;
  padding: .85em 1.8em;
  border-radius: 999px;
  font-weight: 600;
  font-size: .95rem;
  border: 2px solid transparent;
  transition: transform .15s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease;
  white-space: nowrap;
}
.btn--primary{
  background: var(--blue);
  color: #fff;
  box-shadow: 0 10px 24px -8px rgba(47,155,244,.6);
}
.btn--primary:hover{ background: #4aa8f7; transform: translateY(-2px); }
.btn--outline{
  border-color: var(--blue);
  color: var(--blue-light);
  background: transparent;
}
.btn--outline:hover{ background: rgba(47,155,244,.12); transform: translateY(-2px); }
.btn--sm{ padding: .6em 1.4em; font-size: .85rem; }

/* ===== Header ===== */
.header{
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13,15,22,.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--card-border);
}
.header__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height: 76px;
}
.brand{ display:flex; align-items:center; gap:.7em; }
.brand__mark{ width: 40px; height: 40px; }
.brand__text{ display:flex; flex-direction:column; line-height:1.15; }
.brand__name{ font-family:'Poppins',sans-serif; font-weight:600; letter-spacing:.02em; font-size:1.05rem; }
.brand__name strong{ color: var(--blue-light); font-weight:800; }
.brand__tagline{ font-size:.62rem; letter-spacing:.16em; color: var(--text-muted); text-transform: uppercase; }

.nav{ display:flex; align-items:center; gap: 2.2em; }
.nav__link{
  color: var(--text-muted);
  font-weight: 500;
  font-size: .95rem;
  position: relative;
  padding: .3em 0;
  transition: color .2s ease;
}
.nav__link:hover, .nav__link.active{ color: var(--text); }
.nav__link.active::after{
  content:"";
  position:absolute;
  left:0; right:0; bottom:-4px;
  height: 2px;
  background: var(--blue);
  border-radius: 2px;
}

.header__actions{ display:flex; align-items:center; gap: 1em; }
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width: 40px;
  height: 40px;
  background:none;
  border:none;
  padding:0;
}
.nav-toggle span{ display:block; height:2px; width:100%; background: var(--text); border-radius:2px; transition: transform .2s ease, opacity .2s ease; }
.nav-toggle.open span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2){ opacity:0; }
.nav-toggle.open span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero ===== */
.hero{
  position: relative;
  padding: 120px 0 100px;
  text-align: center;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(47,155,244,.18), transparent 55%),
    linear-gradient(180deg, #0b0d13 0%, #10141f 100%);
}
.hero__bg{
  position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(20,20,30,.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20,20,30,.15) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse at 50% 20%, black, transparent 70%);
  opacity: .5;
}
.hero__content{ position:relative; z-index:1; max-width: 780px; }
.hero__logo{ width: 84px; height: 84px; margin: 0 auto 28px; opacity:.95; filter: drop-shadow(0 0 30px rgba(47,155,244,.45)); }
.hero__title{ font-size: clamp(2rem, 4.5vw, 3rem); font-weight: 700; color:#fff; }
.hero__subtitle{ font-size: 1.1rem; max-width: 560px; margin: 0 auto 2em; }
.hero__actions{ display:flex; gap: 1em; justify-content:center; flex-wrap:wrap; }

/* ===== About ===== */
.about{ padding: 110px 0; background: var(--bg); }
.about__grid{ display:grid; grid-template-columns: 1.05fr .95fr; gap: 64px; align-items:center; }
.about h2{ font-size: clamp(1.7rem, 3vw, 2.2rem); color:#fff; }
.about__stats{ display:flex; gap: 2.2em; margin-top: 1.6em; flex-wrap: wrap; }
.about__stats li{ display:flex; flex-direction:column; }
.about__stats strong{ font-family:'Poppins',sans-serif; font-size:1.6rem; color: var(--blue-light); }
.about__stats span{ font-size:.8rem; color: var(--text-muted); }
.about__media{ border-radius: var(--radius); overflow:hidden; box-shadow: var(--shadow); border: 1px solid var(--card-border); }
.about__illustration{ width:100%; height:auto; display:block; }

/* ===== Services ===== */
.services{ position:relative; padding: 110px 0; background: var(--bg-alt); overflow:hidden; }
.services__bg{
  position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(47,155,244,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(47,155,244,.08) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at 50% 0%, black, transparent 75%);
}
.section-heading{ text-align:center; max-width: 640px; margin: 0 auto 60px; position:relative; z-index:1; }
.section-heading h2{ font-size: clamp(1.7rem, 3vw, 2.2rem); color:#fff; }
.services__grid{ position:relative; z-index:1; display:grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.services__grid .service-card:last-child:nth-child(odd){ grid-column: 1 / -1; max-width: calc(50% - 14px); margin: 0 auto; }
.service-card{
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align:center;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.service-card:hover{ transform: translateY(-6px); border-color: var(--blue); box-shadow: var(--shadow); }
.service-card__icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width: 68px; height: 68px;
  border-radius: 50%;
  background: rgba(47,155,244,.1);
  color: var(--blue-light);
  margin-bottom: 20px;
}
.service-card__icon svg{ width: 32px; height: 32px; }
.service-card h3{ color:#fff; font-size: 1.15rem; }
.service-card p{ font-size: .92rem; margin-bottom:0; }

/* ===== Projects ===== */
.projects{ padding: 110px 0; background: var(--bg); }
.project + .project{ margin-top: 32px; }
.project{
  display:grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 40px;
  align-items:center;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 28px;
}
.project__gallery{
  display:grid;
  grid-template-columns: 1.4fr 1fr;
  grid-template-rows: repeat(2, 1fr);
  gap: 12px;
  height: 100%;
}
.project__img{
  width:100%;
  height:100%;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--card-border);
}
.project__img--main{ grid-row: 1 / 3; aspect-ratio: 3/4; height:100%; }
.project__gallery .project__img:not(.project__img--main){ aspect-ratio: 4/3; }
.project__gallery--duo{ grid-template-columns: 1fr 1fr; grid-template-rows: 1fr; }
.project__gallery--duo .project__img--main,
.project__gallery--duo .project__img{ grid-row: auto; aspect-ratio: 3/4; }
.project__gallery--solo{ display:block; height:100%; }
.project__gallery--solo .project__img{ aspect-ratio: 4/3; }
.project__photo{ position:relative; margin:0; }
.project__gallery--duo .project__photo{ aspect-ratio: 3/4; }
.project__photo .project__img{ width:100%; height:100%; }
.project__badge{
  position:absolute; top:12px; left:12px;
  background: rgba(13,15,22,.78);
  color:#fff;
  font-size:.72rem;
  font-weight:700;
  letter-spacing:.06em;
  text-transform:uppercase;
  padding:.35em .9em;
  border-radius:999px;
}
.project__badge--after{ background: rgba(47,155,244,.9); }
.project__client{ display:inline-block; color: var(--blue-light); font-weight:600; font-size: .8rem; letter-spacing: .04em; margin-bottom: .5em; }
.project__info h3{ color:#fff; font-size: 1.3rem; }
.project__info p{ font-size: .95rem; margin-bottom:0; }

/* ===== Testimonials ===== */
.testimonials{ position:relative; padding: 110px 0; background: var(--bg-alt); overflow:hidden; }
.testimonials__bg{
  position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(47,155,244,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(47,155,244,.08) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at 50% 0%, black, transparent 75%);
}
.testimonials__grid{ position:relative; z-index:1; display:grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.testimonials__grid .testimonial-card:last-child:nth-child(odd){ grid-column: 1 / -1; max-width: calc(50% - 14px); margin: 0 auto; }
.testimonial-card{
  margin:0;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 32px;
}
.testimonial-card__quote{ display:inline-flex; color: var(--blue); opacity:.6; margin-bottom: 12px; }
.testimonial-card__quote svg{ width: 34px; height: 26px; }
.testimonial-card__stars{ color: var(--blue-light); letter-spacing: .2em; font-size: .95rem; margin: 0 0 .8em; }
.testimonial-card__text{ font-size: .96rem; margin-bottom: 1.4em; }
.testimonial-card__author{ font-size: .85rem; color: var(--text); font-weight:600; font-style: normal; }

/* ===== CTA Banner ===== */
.cta-banner{
  padding: 70px 0;
  text-align: center;
  background: linear-gradient(135deg, rgba(47,155,244,.14), transparent 60%), var(--bg-alt);
  border-top: 1px solid var(--card-border);
  border-bottom: 1px solid var(--card-border);
}
.cta-banner__inner h2{
  color:#fff;
  font-size: clamp(1.4rem, 3vw, 2rem);
  max-width: 720px;
  margin: 0 auto 28px;
}

/* ===== Contact ===== */
.contact{ padding: 110px 0; background: var(--bg); }
.contact__grid{ display:grid; grid-template-columns: 1.2fr .8fr; gap: 48px; align-items:start; }
.contact__form{
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 32px;
  display:flex;
  flex-direction:column;
  gap: 18px;
}
.form-row{ display:grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-field{ display:flex; flex-direction:column; gap:.4em; }
.form-field label{ font-size:.8rem; color: var(--text-muted); }
.form-field input, .form-field textarea{
  background: var(--bg-alt);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: .85em 1em;
  color: var(--text);
  font-family: inherit;
  font-size: .95rem;
  resize: vertical;
  transition: border-color .2s ease;
}
.form-field input:focus, .form-field textarea:focus{ outline:none; border-color: var(--blue); }
.contact__form .btn{ align-self:flex-start; }
.form-feedback{ font-size:.9rem; min-height: 1.2em; color: var(--blue-light); margin:0; }

.contact__info{ display:flex; flex-direction:column; gap: 28px; }
.info-list{ display:flex; flex-direction:column; gap: 18px; }
.info-list li{ display:flex; align-items:center; gap: 14px; color: var(--text-muted); }
.info-list__icon{
  flex-shrink:0;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: rgba(47,155,244,.1);
  color: var(--blue-light);
}
.info-list__icon svg{ width: 18px; height: 18px; }

/* ===== Footer ===== */
.footer{ background: var(--bg-alt); border-top: 1px solid var(--card-border); padding: 28px 0; }
.footer__inner{ display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap: 12px; }
.footer p{ margin:0; font-size: .85rem; }
.socials{ display:flex; gap: 14px; }
.socials a{
  display:inline-flex; align-items:center; justify-content:center;
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid var(--card-border);
  color: var(--text-muted);
  transition: color .2s ease, border-color .2s ease;
}
.socials a svg{ width: 16px; height: 16px; }
.socials a:hover{ color: var(--blue-light); border-color: var(--blue); }

/* ===== Floating WhatsApp button ===== */
.whatsapp-float{
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 200;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: #25D366;
  color: #fff;
  box-shadow: 0 10px 24px -6px rgba(0,0,0,.5);
  transition: transform .2s ease, box-shadow .2s ease;
}
.whatsapp-float svg{ width: 30px; height: 30px; }
.whatsapp-float:hover{ transform: translateY(-3px) scale(1.05); box-shadow: 0 14px 28px -6px rgba(0,0,0,.55); }

@media (max-width: 480px){
  .whatsapp-float{ right: 16px; bottom: 16px; width: 52px; height: 52px; }
  .whatsapp-float svg{ width: 26px; height: 26px; }
}

/* ===== Reveal animation ===== */
.reveal{ opacity:0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible{ opacity:1; transform:none; }

/* ===== Responsive ===== */
@media (max-width: 900px){
  .about__grid, .contact__grid{ grid-template-columns: 1fr; }
  .about__media{ order:-1; }
  .services__grid{ grid-template-columns: 1fr; }
  .services__grid .service-card:last-child:nth-child(odd){ max-width: none; }
  .project{ grid-template-columns: 1fr; }
  .project__gallery:not(.project__gallery--duo):not(.project__gallery--solo){ grid-template-columns: 1fr 1fr; grid-template-rows: auto auto; }
  .project__gallery:not(.project__gallery--duo):not(.project__gallery--solo) .project__img--main{ grid-row: 1 / 2; grid-column: 1 / 3; aspect-ratio: 16/9; }
  .project__gallery--solo .project__img{ aspect-ratio: 16/9; }
  .testimonials__grid{ grid-template-columns: 1fr; }
  .testimonials__grid .testimonial-card:last-child:nth-child(odd){ max-width: none; }
}

@media (max-width: 760px){
  .nav{
    position:absolute;
    top: 76px; left:0; right:0;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--card-border);
    flex-direction:column;
    align-items:flex-start;
    gap: 0;
    padding: 8px 24px 16px;
    transform: translateY(-8px);
    opacity:0;
    pointer-events:none;
    transition: opacity .2s ease, transform .2s ease;
  }
  .nav.open{ transform: translateY(0); opacity:1; pointer-events:auto; }
  .nav__link{ width:100%; padding: 12px 0; border-bottom: 1px solid var(--card-border); }
  .nav__link:last-child{ border-bottom:none; }
  .header__actions .btn--sm{ display:none; }
  .nav-toggle{ display:flex; }
  .form-row{ grid-template-columns: 1fr; }
}

@media (max-width: 480px){
  .hero{ padding: 96px 0 70px; }
  .about, .services, .contact{ padding: 80px 0; }
}