/* ============================================================
   ZK PLAST — site institucional
   Tema escuro/azulado inspirado diretamente na logo oficial:
   fundo azul-marinho em todo o site (sem blocos brancos), com
   painéis translúcidos no lugar de cartões brancos.
   Ajuste as variáveis abaixo se receber um manual de marca com
   valores exatos (Pantone/RGB) no futuro.
   ============================================================ */

:root {
  --color-primary: #0A1B33;       /* azul-marinho da logo ZK Plast */
  --color-primary-light: #0B2A55;
  --color-accent: #0076FF;        /* azul vivo da logo ZK Plast (uso decorativo: ícones, bordas) */
  --color-accent-light: #4FA8FF;  /* mesma família, mais clara — uso em texto sobre fundo escuro */
  --color-accent-dark: #0058C4;

  --color-whatsapp: #25D366;
  --color-whatsapp-dark: #1EBE5A;

  --color-bg: #0A1B33;
  --color-bg-alt: #0B2A55;
  --color-bg-footer: #081A2E;
  --color-panel: rgba(255, 255, 255, 0.045);
  --color-panel-strong: rgba(255, 255, 255, 0.08);

  --color-heading: #FFFFFF;
  --color-text: #E7EDF5;
  --color-text-muted: #9FB0C3;
  --color-border: rgba(255, 255, 255, 0.12);

  --color-placeholder: #FDBA74;
  --color-placeholder-bg: rgba(253, 186, 116, 0.12);
  --color-placeholder-border: rgba(253, 186, 116, 0.5);

  --glow-bright: #006CEF;
  --glow-mid: #00357D;

  --font-heading: "Poppins", Arial, sans-serif;
  --font-body: "Inter", Arial, sans-serif;

  --radius: 10px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --header-h: 76px;
  --container-w: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background: radial-gradient(ellipse 140% 55% at 80% -10%, var(--glow-mid) 0%, var(--color-bg) 60%), var(--color-bg);
  line-height: 1.6;
}

img { max-width: 100%; display: block; }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-heading);
  margin: 0 0 0.5em;
  line-height: 1.25;
}

a { color: inherit; text-decoration: none; }

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

/* Marca visual dos textos que precisam ser substituídos pelo cliente */
.placeholder-tag {
  color: var(--color-placeholder);
  background: var(--color-placeholder-bg);
  border: 1px dashed var(--color-placeholder-border);
  border-radius: 4px;
  padding: 0 6px;
  font-size: 0.92em;
  font-style: italic;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-accent);
  color: #fff;
  padding: 12px 18px;
  z-index: 1000;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ===================== Botões ===================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn:focus-visible { outline: 3px solid var(--color-accent-light); outline-offset: 2px; }

.btn--whatsapp { background: var(--color-whatsapp); color: #fff; }
.btn--whatsapp:hover { background: var(--color-whatsapp-dark); }
.btn--whatsapp .icon { width: 18px; height: 18px; }

.btn--outline { border-color: rgba(255,255,255,0.7); color: #fff; }
.btn--outline:hover { background: rgba(255,255,255,0.12); }

.btn--primary { background: var(--color-accent); color: #fff; }
.btn--primary:hover { background: var(--color-accent-dark); }

.btn--lg { padding: 16px 36px; font-size: 1.05rem; }

/* ===================== Header ===================== */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  background: rgba(10, 27, 51, 0.8);
  backdrop-filter: blur(10px);
  z-index: 500;
  box-shadow: 0 1px 0 var(--color-border);
  transition: box-shadow 0.2s ease, background 0.2s ease;
}
.header.is-scrolled { background: rgba(10, 27, 51, 0.96); box-shadow: 0 6px 24px rgba(0,0,0,0.35); }

.header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 6px;
}
.header__logo-icon { height: 30px; width: auto; }
.header__logo-text {
  font-family: var(--font-heading);
  font-weight: 700;
  font-style: italic;
  font-size: 1.5rem;
  color: #fff;
  letter-spacing: -0.01em;
}

.nav__list {
  display: flex;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav__link {
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  padding: 6px 0;
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--color-accent-light);
  transition: width 0.2s ease;
}
.nav__link:hover::after { width: 100%; }

.header__actions { display: flex; align-items: center; gap: 16px; }
.header__whatsapp { padding: 10px 20px; font-size: 0.9rem; }
.nav__whatsapp-item { display: none; }
.header__whatsapp-mobile { width: 100%; justify-content: center; }

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===================== Hero ===================== */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,8,20,0.05) 0%, rgba(0,8,20,0.6) 100%);
}
.hero__content {
  position: relative;
  z-index: 2;
  color: #fff;
  padding-top: var(--header-h);
  max-width: 760px;
}
.hero__eyebrow {
  letter-spacing: 0.12em;
  font-weight: 600;
  color: var(--color-accent-light);
  margin-bottom: 14px;
  font-size: 0.85rem;
}
.hero__title {
  color: #fff;
  font-size: clamp(2rem, 4.2vw, 3.2rem);
  margin-bottom: 20px;
}
.hero__text {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.9);
  margin-bottom: 32px;
  max-width: 620px;
}
.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* ===================== Sections genéricas ===================== */
.section { padding: 96px 0; }
.section--alt { background: var(--color-bg-alt); }
.section--dark { background: var(--color-bg-footer); }

.eyebrow {
  color: var(--color-accent-light);
  font-weight: 700;
  letter-spacing: 0.08em;
  font-size: 0.82rem;
  text-transform: uppercase;
  margin: 0 0 10px;
}
.section__title { font-size: clamp(1.6rem, 3vw, 2.2rem); }
.section__head { max-width: 680px; margin: 0 auto 48px; text-align: center; }
.section__subtitle { color: var(--color-text-muted); margin-top: 10px; }

/* ===================== Seção com foto de fundo (reutilizável) ===================== */
.photo-section { position: relative; overflow: hidden; }
.photo-section__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: right center;
}
.photo-section__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8,20,40,0.86) 0%, rgba(8,20,40,0.92) 100%);
}
.photo-section .container { position: relative; z-index: 2; }

/* ===================== Sobre ===================== */
.about__text { max-width: 640px; }
.about__facts {
  list-style: none;
  padding: 0;
  margin: 20px 0;
  display: grid;
  gap: 10px;
}
.about__facts li { border-left: 3px solid var(--color-accent); padding-left: 12px; }

/* ===================== Cards de produtos ===================== */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 28px;
}
.card {
  background: var(--color-panel-strong);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  display: flex;
  flex-direction: column;
}
.card:hover { transform: translateY(-6px); box-shadow: 0 16px 36px rgba(0,0,0,0.45); border-color: rgba(255,255,255,0.24); }
.card__body { padding: 22px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card__body h3 { font-size: 1.1rem; }
.card__body p { color: var(--color-text-muted); margin: 0 0 8px; flex: 1; }
.card__link { color: var(--color-accent-light); font-weight: 600; }
.card__link:hover { text-decoration: underline; }

/* ===================== Diferenciais ===================== */
.diff-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 28px;
}
.diff {
  text-align: center;
  padding: 32px 20px;
  border-radius: var(--radius);
  background: var(--color-panel);
  border: 1px solid var(--color-border);
}
.diff__icon {
  width: 56px; height: 56px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
}
.diff h3 { font-size: 1.05rem; }
.diff p { color: var(--color-text-muted); margin: 0; font-size: 0.95rem; }

/* ===================== Localização ===================== */
.location {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  align-items: center;
}
.location__text p { color: var(--color-text-muted); margin-bottom: 20px; }
.location__map iframe { border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--color-border); }

/* ===================== Contato ===================== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 18px;
  margin-bottom: 40px;
}
.contact-card {
  background: var(--color-panel-strong);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  overflow-wrap: break-word;
  transition: background 0.2s ease;
}
.contact-card:not(.contact-card--static):hover { background: rgba(255,255,255,0.13); }
.contact-cta { text-align: center; }

/* ===================== Footer ===================== */
.footer { background: var(--color-bg-footer); color: rgba(255,255,255,0.85); padding-top: 64px; }
.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer__logo { display: flex; align-items: center; gap: 6px; margin-bottom: 14px; }
.footer__logo-icon { height: 34px; width: auto; }
.footer__logo-text {
  font-family: var(--font-heading);
  font-weight: 700;
  font-style: italic;
  font-size: 1.7rem;
  color: #fff;
  letter-spacing: -0.01em;
}
.footer__brand p { color: rgba(255,255,255,0.6); font-size: 0.92rem; }
.footer h4 { color: #fff; font-size: 0.95rem; margin-bottom: 16px; }
.footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.footer a:hover { color: var(--color-accent-light); }
.footer__bottom { padding: 20px 0; font-size: 0.85rem; color: rgba(255,255,255,0.5); }

.footer__social { display: flex; gap: 12px; }
.footer__social-link {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255,255,255,0.85);
  font-weight: 500;
  transition: color 0.2s ease;
}
.footer__social-link:hover { color: #fff; }
.footer__social-icon {
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--color-panel-strong);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  transition: background 0.2s ease, transform 0.15s ease;
}
.footer__social-icon svg { width: 18px; height: 18px; }
.footer__social-link:hover .footer__social-icon { background: var(--color-accent); transform: translateY(-2px); }

/* ===================== Botão flutuante WhatsApp ===================== */
.whatsapp-float {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 58px;
  height: 58px;
  background: var(--color-whatsapp);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  z-index: 400;
  color: #fff;
  transition: transform 0.2s ease, background 0.2s ease;
}
.whatsapp-float svg { width: 30px; height: 30px; }
.whatsapp-float:hover { background: var(--color-whatsapp-dark); transform: scale(1.08); }

/* ===================== Animação de entrada ===================== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ===================== Responsivo ===================== */
@media (max-width: 900px) {
  .location { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px) {
  .nav { display: none; }
  .hamburger { display: flex; }
  .header__whatsapp { display: none; }

  .nav.is-open {
    display: block;
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    background: var(--color-primary-light);
    box-shadow: 0 12px 24px rgba(0,0,0,0.45);
    padding: 12px 24px 24px;
  }
  .nav.is-open .nav__list { flex-direction: column; gap: 4px; }
  .nav.is-open .nav__link { display: block; padding: 12px 0; }
  .nav.is-open .nav__whatsapp-item { display: block; margin-top: 12px; }

  .footer__grid { grid-template-columns: 1fr; gap: 32px; }
  .section { padding: 64px 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { transition: none; opacity: 1; transform: none; }
  * { animation: none !important; }
}