/* =============================================================
   ETECH SYSTEMS - CSS OTIMIZADO E RESPONSIVO
=============================================================== */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy: #060d1a;
  --navy-2: #0b1628;
  --navy-3: #0f1f35;
  --cyan: #00d4ff;
  --cyan-brand: #29ABE2;
  --silver: #c8d6e8;
  --silver-dim: #8C9AA8;
  --white: #ffffff;
  --font: "Inter", system-ui, sans-serif;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font); background: var(--navy); color: var(--silver); line-height: 1.65; min-width: 320px; }
img, svg, iframe { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
input, textarea { font-family: inherit; }

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; }
.section__header { margin-bottom: 48px; }
.section__header--center { text-align: center; }
.section__tag { display: inline-block; font-size: 12px; font-weight: 600; letter-spacing: 2px; text-transform: uppercase; color: var(--cyan-brand); background: rgba(41,171,226,0.1); padding: 6px 14px; border-radius: 100px; margin-bottom: 12px; }
.section__title { font-size: 36px; font-weight: 800; color: var(--white); margin-bottom: 12px; }
.section__sub { font-size: 16px; color: var(--silver-dim); max-width: 600px; margin: 0 auto; }

/* =============================================================
   HEADER
=============================================================== */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(6,13,26,0.95); backdrop-filter: blur(10px); border-bottom: 1px solid rgba(255,255,255,0.05); padding: 16px 0; transition: var(--transition); }
.header__inner { display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: baseline; gap: 4px; font-size: 20px; font-weight: 800; }
.logo__etech { color: var(--cyan-brand); }
.logo__systems { color: var(--white); }
.logo__ltda { font-size: 10px; font-weight: 600; color: var(--silver-dim); }
.nav { display: flex; align-items: center; gap: 24px; }
.nav__link { font-size: 14px; font-weight: 500; color: var(--silver); transition: var(--transition); }
.nav__link:hover { color: var(--cyan-brand); }
.nav__link.active { color: var(--cyan-brand); }
.nav__link--cta { background: var(--cyan-brand); color: var(--navy); padding: 10px 20px; border-radius: 8px; font-weight: 600; }
.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; padding: 8px; }
.hamburger span { width: 24px; height: 2px; background: var(--white); transition: var(--transition); }

/* =============================================================
   HERO
=============================================================== */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; overflow: hidden; background: linear-gradient(135deg, var(--navy) 0%, var(--navy-2) 50%, var(--navy-3) 100%); }
.hero__bg { position: absolute; inset: 0; background: radial-gradient(circle at 70% 20%, rgba(41,171,226,0.15) 0%, transparent 50%), radial-gradient(circle at 20% 80%, rgba(0,128,255,0.1) 0%, transparent 40%); pointer-events: none; }
.hero__container { position: relative; z-index: 1; padding: 120px 20px 80px; display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.hero__content { }
.hero__image { position: relative; }
.hero__image img { width: 100%; height: auto; border-radius: 16px; box-shadow: 0 20px 60px rgba(0,0,0,0.4); }
.hero__eyebrow { display: flex; align-items: center; gap: 12px; font-size: 13px; font-weight: 600; letter-spacing: 3px; text-transform: uppercase; color: var(--cyan-brand); margin-bottom: 20px; }
.hero__eyebrow::before, .hero__eyebrow::after { content: ''; width: 32px; height: 2px; background: var(--cyan-brand); }
.hero__title { font-size: clamp(32px, 6vw, 56px); font-weight: 800; color: var(--white); line-height: 1.15; margin-bottom: 24px; }
.hero__title-highlight { background: linear-gradient(135deg, var(--cyan-brand), var(--cyan)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero__desc { font-size: 17px; color: var(--silver-dim); line-height: 1.8; margin-bottom: 36px; max-width: 540px; }
.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn { display: inline-block; padding: 14px 28px; font-size: 15px; font-weight: 600; border-radius: 8px; transition: var(--transition); }
.btn--primary { background: linear-gradient(135deg, var(--cyan-brand), #0080ff); color: var(--white); box-shadow: 0 8px 24px rgba(41,171,226,0.3); border: none; }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(41,171,226,0.4); }
.btn--outline { border: 2px solid rgba(255,255,255,0.2); color: var(--white); background: transparent; }
.btn--outline:hover { border-color: var(--cyan-brand); color: var(--cyan-brand); }
.hero__scroll { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 8px; color: var(--silver-dim); font-size: 12px; letter-spacing: 2px; animation: bounce 2s infinite; }
@keyframes bounce { 0%,100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(8px); } }

@media (max-width: 1024px) {
  .hero__container { grid-template-columns: 1fr; gap: 40px; }
  .hero__image { order: -1; max-width: 400px; margin: 0 auto; }
}

@media (max-width: 768px) {
  .hero { min-height: auto; padding: 100px 0 60px; }
  .hero__container { padding: 80px 20px 50px; grid-template-columns: 1fr; }
  .hero__image { display: none; }
  .hero__content { text-align: center; }
  .hero__eyebrow { justify-content: center; }
  .hero__eyebrow::before, .hero__eyebrow::after { width: 20px; }
  .hero__title { font-size: clamp(26px, 8vw, 36px); }
  .hero__desc { font-size: 14px; }
  .hero__actions { flex-direction: column; gap: 12px; }
  .hero__actions .btn { width: 100%; text-align: center; }
  .hero__scroll { display: none; }
}

/* =============================================================
   SOBRE
=============================================================== */
.sobre { position: relative; background: linear-gradient(180deg, var(--navy-2) 0%, var(--navy-3) 100%); overflow: hidden; }
.sobre__bg { position: absolute; inset: 0; background: radial-gradient(circle at 80% 0%, rgba(41,171,226,0.08) 0%, transparent 50%), radial-gradient(circle at 20% 100%, rgba(27,58,107,0.1) 0%, transparent 40%); pointer-events: none; }
.sobre .section__title { color: var(--white); }
.sobre .section__sub { color: var(--silver-dim); margin: 0 auto; }
.sobre__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; max-width: 1000px; margin: 0 auto; }
.sobre__card { background: linear-gradient(145deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02)); border: 1px solid rgba(255,255,255,0.08); border-radius: 20px; padding: 32px 24px; text-align: center; transition: var(--transition); }
.sobre__card:hover { transform: translateY(-4px); border-color: rgba(41,171,226,0.3); }
.sobre__icon { width: 56px; height: 56px; background: linear-gradient(135deg, var(--cyan-brand), #0080ff); border-radius: 16px; display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; box-shadow: 0 8px 24px rgba(41,171,226,0.3); }
.sobre__icon svg { stroke: var(--white); }
.sobre__card-title { font-size: 18px; font-weight: 700; color: var(--white); margin-bottom: 10px; }
.sobre__card-desc { font-size: 14px; color: var(--silver-dim); line-height: 1.6; }

/* =============================================================
   SERVIÇOS
=============================================================== */
.servicos__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service-card { background: var(--navy-2); border: 1px solid rgba(255,255,255,0.05); border-radius: 16px; padding: 32px 24px; transition: var(--transition); }
.service-card:hover { border-color: rgba(41,171,226,0.3); transform: translateY(-4px); }
.service-card__icon { width: 56px; height: 56px; background: linear-gradient(135deg, rgba(41,171,226,0.15), rgba(41,171,226,0.05)); border-radius: 14px; display: flex; align-items: center; justify-content: center; margin-bottom: 20px; }
.service-card__icon svg { stroke: var(--cyan-brand); }
.service-card__title { font-size: 18px; font-weight: 700; color: var(--white); margin-bottom: 10px; }
.service-card__desc { font-size: 14px; color: var(--silver-dim); line-height: 1.6; }

/* =============================================================
   CLIENTES
=============================================================== */
.clientes-track { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; }
.cliente-card { background: var(--white); padding: 16px 32px; border-radius: 10px; font-size: 16px; font-weight: 700; }
.cliente-card:nth-child(1) { color: #1B3A6B; }
.cliente-card:nth-child(2) { color: #CC0000; }
.cliente-card:nth-child(3) { color: #009145; }
.cliente-card:nth-child(4) { color: #FDB913; }
.cliente-card:nth-child(5) { color: #003DA5; }

/* =============================================================
   PORTFÓLIO
=============================================================== */
.portfolio { padding: 80px 0; background: var(--navy); }
.portfolio__container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.portfolio__header { text-align: center; margin-bottom: 40px; }
.portfolio__eyebrow { display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: 3px; text-transform: uppercase; color: var(--cyan-brand); margin-bottom: 14px; }
.portfolio__title { font-size: clamp(28px, 4vw, 40px); font-weight: 800; color: var(--white); margin-bottom: 14px; }
.portfolio__subtitle { font-size: 15px; color: var(--silver-dim); max-width: 500px; margin: 0 auto; }
.portfolio__filters { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-bottom: 36px; }
.filter-btn { font-size: 13px; font-weight: 600; padding: 10px 20px; border: 2px solid transparent; border-radius: 100px; cursor: pointer; background: var(--white); color: var(--navy); transition: var(--transition); }
.filter-btn:hover { border-color: var(--cyan-brand); color: var(--cyan-brand); }
.filter-btn.active { background: var(--navy); color: var(--white); border-color: var(--navy); }
.portfolio__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.portfolio-item { background: var(--navy-2); border-radius: 14px; overflow: hidden; transition: var(--transition); cursor: pointer; }
.portfolio-item:hover { transform: translateY(-6px); }
.portfolio-item.hidden { display: none; }
.portfolio-item__img-wrap { position: relative; padding-top: 62%; overflow: hidden; }
.portfolio-item__img-wrap img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.portfolio-item__overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(27,58,107,0.7), rgba(41,171,226,0.5)); display: flex; align-items: center; justify-content: center; opacity: 0; transition: var(--transition); }
.portfolio-item:hover .portfolio-item__overlay { opacity: 1; }
.zoom-icon { width: 48px; height: 48px; border: 2px solid rgba(255,255,255,0.8); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; transform: scale(0.8); transition: var(--transition); }
.portfolio-item:hover .zoom-icon { transform: scale(1); }
.portfolio-item__info { padding: 20px; }
.portfolio-item__tag { display: inline-block; font-size: 10px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; color: var(--cyan-brand); background: rgba(41,171,226,0.1); border-radius: 100px; padding: 4px 10px; margin-bottom: 10px; }
.portfolio-item__title { font-size: 16px; font-weight: 700; color: var(--white); margin-bottom: 8px; }
.portfolio-item__desc { font-size: 13px; color: var(--silver-dim); line-height: 1.5; }
.portfolio__count { text-align: center; margin-top: 28px; font-size: 13px; color: var(--silver-dim); }

/* LIGHTBOX */
.lightbox { position: fixed; inset: 0; z-index: 9999; display: flex; align-items: center; justify-content: center; padding: 20px; visibility: hidden; opacity: 0; transition: var(--transition); }
.lightbox.open { visibility: visible; opacity: 1; }
.lightbox__backdrop { position: absolute; inset: 0; background: rgba(10,20,40,0.9); cursor: pointer; }
.lightbox__box { position: relative; z-index: 1; background: var(--navy-2); border-radius: 14px; overflow: hidden; max-width: 800px; width: 100%; }
.lightbox__img-wrap { background: var(--navy); max-height: 50vh; }
.lightbox__img-wrap img { width: 100%; height: auto; max-height: 50vh; object-fit: contain; }
.lightbox__body { padding: 20px; display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; }
.lightbox__tag { font-size: 10px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; color: var(--cyan-brand); background: rgba(41,171,226,0.1); border-radius: 100px; padding: 4px 10px; display: inline-block; margin-bottom: 8px; }
.lightbox__title { font-size: 18px; font-weight: 800; color: var(--white); margin-bottom: 6px; }
.lightbox__desc { font-size: 14px; color: var(--silver-dim); }
.lightbox__close { flex-shrink: 0; width: 36px; height: 36px; border-radius: 50%; border: 2px solid rgba(255,255,255,0.2); background: transparent; cursor: pointer; display: flex; align-items: center; justify-content: center; color: var(--white); }
.lightbox__close:hover { background: var(--cyan-brand); border-color: var(--cyan-brand); }
.lightbox__nav { position: absolute; top: 50%; transform: translateY(-50%); width: 40px; height: 40px; border-radius: 50%; border: none; background: rgba(255,255,255,0.9); cursor: pointer; display: flex; align-items: center; justify-content: center; color: var(--navy); }
.lightbox__nav:hover { background: var(--cyan-brand); color: var(--white); }
.lightbox__nav--prev { left: 12px; }
.lightbox__nav--next { right: 12px; }

/* =============================================================
   CONTATO
=============================================================== */
.contato-premium { padding: 80px 0; background: var(--navy-2); }
.contato__body { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.contato-stack { display: flex; flex-direction: column; gap: 24px; }
.cinfo { background: var(--navy); border-radius: 16px; padding: 28px; }
.cinfo__brand { margin-bottom: 24px; }
.cinfo__logo { display: flex; align-items: baseline; gap: 4px; font-size: 18px; font-weight: 800; margin-bottom: 6px; }
.cinfo__logo-e { color: var(--cyan-brand); }
.cinfo__logo-s { color: var(--white); }
.cinfo__logo-l { font-size: 9px; color: var(--silver-dim); }
.cinfo__slogan { font-size: 12px; color: var(--silver-dim); }
.cinfo__rows { display: flex; flex-direction: column; gap: 16px; }
.crow { background: rgba(255,255,255,0.03); border-radius: 10px; padding: 14px; }
.crow__label { font-size: 11px; font-weight: 600; color: var(--cyan-brand); text-transform: uppercase; letter-spacing: 1px; display: block; margin-bottom: 6px; }
.crow__value { font-size: 15px; }
.crow__value a { color: var(--white); transition: var(--transition); display: inline-flex; align-items: center; gap: 6px; }
.crow__value a:hover { color: var(--cyan-brand); }
.wa-icon { flex-shrink: 0; }
.crow__value small { display: block; font-size: 12px; color: var(--silver-dim); margin-top: 4px; }
.cmap { border-radius: 16px; overflow: hidden; }
.cmap__frame { height: 180px; }
.cmap__frame iframe { width: 100%; height: 100%; border: none; }
.cmap__addr { background: var(--navy); padding: 16px; }
.cmap__addr-label { font-size: 10px; font-weight: 600; color: var(--cyan-brand); text-transform: uppercase; letter-spacing: 1px; display: block; margin-bottom: 4px; }
.cmap__addr-line { font-size: 14px; color: var(--white); }

.orcamento-box { background: var(--navy); border-radius: 16px; padding: 28px; }
.orcamento-box__header { margin-bottom: 24px; }
.orcamento-box__title { font-size: 20px; font-weight: 700; color: var(--white); }
.orcamento-form__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group--full { grid-column: span 2; }
.form-group label { font-size: 12px; font-weight: 600; color: var(--silver); }
.form-group input, .form-group textarea { background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); border-radius: 8px; padding: 12px 14px; font-size: 14px; color: var(--white); transition: var(--transition); }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--silver-dim); }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--cyan-brand); }
.orcamento-form__actions { margin-top: 20px; }
.orcamento-form__actions .btn { width: 100%; }

/* =============================================================
   FOOTER
=============================================================== */
.footer-premium { background: var(--navy); border-top: 1px solid rgba(255,255,255,0.05); }
.footer-premium__grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; padding: 48px 0; }
.fp-brand__logo { display: flex; align-items: baseline; gap: 4px; font-size: 18px; font-weight: 800; margin-bottom: 10px; }
.fe { color: var(--cyan-brand); }
.fs { color: var(--white); }
.fl { font-size: 9px; color: var(--silver-dim); }
.fp-brand__desc { font-size: 14px; color: var(--silver-dim); max-width: 280px; }
.fp-col__title { font-size: 14px; font-weight: 700; color: var(--white); margin-bottom: 16px; }
.fp-col__links { display: flex; flex-direction: column; gap: 10px; }
.fp-col__link { font-size: 14px; color: var(--silver-dim); transition: var(--transition); }
.fp-col__link:hover { color: var(--cyan-brand); }
.fp-contact__item { font-size: 13px; color: var(--silver-dim); margin-bottom: 10px; }
.fp-contact__item a { color: var(--white); }
.fp-contact__item a:hover { color: var(--cyan-brand); }
.footer-premium__bottom { border-top: 1px solid rgba(255,255,255,0.05); padding: 20px 0; text-align: center; }
.footer-premium__copy { font-size: 13px; color: var(--silver-dim); }

/* =============================================================
   RESPONSIVIDADE MOBILE
=============================================================== */
@media (max-width: 1024px) {
  .sobre__grid, .servicos__grid, .portfolio__grid { grid-template-columns: repeat(2, 1fr); }
  .contato__body { grid-template-columns: 1fr; }
  .footer-premium__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav { display: none; position: fixed; top: 60px; left: 0; right: 0; background: var(--navy-2); flex-direction: column; padding: 20px; gap: 16px; border-top: 1px solid rgba(255,255,255,0.1); }
  .nav.open { display: flex; }
  .hamburger { display: flex; }
  
  .hero { min-height: auto; padding: 100px 0 60px; }
  .hero__container { padding: 80px 20px 50px; }
  .hero__content { text-align: center; }
  .hero__eyebrow { justify-content: center; font-size: 11px; }
  .hero__eyebrow::before, .hero__eyebrow::after { width: 20px; }
  .hero__title { font-size: clamp(26px, 8vw, 36px); }
  .hero__desc { font-size: 14px; }
  .hero__actions { flex-direction: column; gap: 12px; }
  .hero__actions .btn { width: 100%; text-align: center; }
  .hero__scroll { display: none; }
  
  .section { padding: 60px 0; }
  .section__title { font-size: 26px; }
  .section__sub { font-size: 14px; }
  
  .sobre { padding: 60px 0; }
  .sobre__grid { grid-template-columns: 1fr; gap: 16px; }
  .sobre__card { padding: 24px 20px; }
  .sobre__icon { width: 48px; height: 48px; border-radius: 12px; }
  .sobre__icon svg { width: 20px; height: 20px; }
  .sobre__card-title { font-size: 16px; }
  .sobre__card-desc { font-size: 13px; }
  
  .servicos__grid { grid-template-columns: 1fr; gap: 16px; }
  .service-card { padding: 24px 20px; }
  
  .clientes-track { flex-direction: column; align-items: center; gap: 12px; }
  .cliente-card { width: 100%; max-width: 260px; text-align: center; }
  
  .portfolio { padding: 60px 0; }
  .portfolio__filters { gap: 8px; margin-bottom: 24px; }
  .filter-btn { padding: 8px 14px; font-size: 12px; }
  .portfolio__grid { grid-template-columns: 1fr; gap: 16px; }
  .portfolio-item__info { padding: 16px; }
  
  .lightbox__nav { display: none; }
  .lightbox__body { flex-direction: column; }
  
  .contato-premium { padding: 60px 0; }
  .cinfo, .orcamento-box { padding: 20px; }
  .orcamento-form__grid { grid-template-columns: 1fr; }
  .form-group--full { grid-column: span 1; }
  .orcamento-form__actions .btn { width: 100%; }
  
  .footer-premium__grid { grid-template-columns: 1fr; gap: 32px; text-align: center; }
  .fp-brand__desc { max-width: 100%; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero__title { font-size: 24px; }
  .btn { padding: 12px 20px; font-size: 14px; }
  .section__tag { font-size: 10px; }
}