/* ==========================================================================
   MV Group — Gestão de Resíduos
   Folha de estilos principal (mobile-first)
   --------------------------------------------------------------------------
   Índice:
   1. Design tokens (variáveis CSS)
   2. Reset / base
   3. Utilitários e layout (container, grids, secções)
   4. Componentes (botões, cartões, badges, formulários)
   5. Cabeçalho e navegação
   6. Hero
   7. Secções específicas (serviços, galeria, certificações, CTA, contactos)
   8. Rodapé
   9. Animações de entrada (scroll reveal)
   ========================================================================== */

/* 1. DESIGN TOKENS
   ========================================================================== */
:root {
  /* Cores da marca (derivadas do logótipo MV) */
  --c-green: #2fcb5f;
  --c-green-dark: #1ea34a;
  --c-green-tint: #e8faee;
  --c-blue: #4255e5;
  --c-blue-dark: #2f3fb8;
  --c-blue-tint: #eceefc;

  /* Neutros */
  --c-ink: #10182b;        /* títulos */
  --c-body: #45506b;       /* texto corrente */
  --c-muted: #7b86a1;      /* texto secundário */
  --c-line: #e5e9f2;       /* bordas/divisórias */
  --c-bg: #ffffff;
  --c-bg-soft: #f6f8fc;    /* secções alternadas */

  /* Tipografia */
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --fs-hero: clamp(2.2rem, 5.5vw, 3.8rem);
  --fs-h2: clamp(1.7rem, 3.5vw, 2.5rem);
  --fs-h3: 1.25rem;
  --fs-body: 1.0625rem;
  --fs-small: 0.875rem;

  /* Espaçamento e forma */
  --section-pad: clamp(4rem, 9vw, 7rem);
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 3px rgba(16, 24, 43, 0.07);
  --shadow-md: 0 10px 30px -10px rgba(16, 24, 43, 0.15);
  --shadow-lg: 0 24px 60px -20px rgba(16, 24, 43, 0.25);

  --header-h: 76px;
}

/* 2. RESET / BASE
   ========================================================================== */
*,
*::before,
*::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 12px); }

body {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--c-body);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4 { color: var(--c-ink); line-height: 1.2; font-weight: 700; }

a { color: var(--c-blue); text-decoration: none; }
a:hover { color: var(--c-blue-dark); }

ul[role="list"] { list-style: none; }

:focus-visible { outline: 3px solid var(--c-blue); outline-offset: 2px; }

/* 3. UTILITÁRIOS E LAYOUT
   ========================================================================== */
.container { width: min(1180px, 100% - 2.5rem); margin-inline: auto; }

.section { padding-block: var(--section-pad); }
.section--soft { background: var(--c-bg-soft); }

/* Cabeçalho padrão de secção: kicker + título + lead */
.section-head { max-width: 640px; margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.section-head--center { margin-inline: auto; text-align: center; }

.kicker {
  display: inline-block;
  font-size: var(--fs-small);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-green-dark);
  background: var(--c-green-tint);
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}

.section-head h2 { font-size: var(--fs-h2); margin-bottom: 0.75rem; }
.section-head .lead { font-size: 1.125rem; color: var(--c-muted); }

/* 4. COMPONENTES
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 1rem;
  padding: 0.85rem 1.75rem;
  border-radius: 999px;
  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--primary { background: var(--c-green); color: #fff; box-shadow: 0 8px 20px -8px rgba(47, 203, 95, 0.6); }
.btn--primary:hover { background: var(--c-green-dark); color: #fff; }

.btn--secondary { background: var(--c-blue); color: #fff; box-shadow: 0 8px 20px -8px rgba(66, 85, 229, 0.6); }
.btn--secondary:hover { background: var(--c-blue-dark); color: #fff; }

.btn--ghost { background: transparent; color: var(--c-ink); border-color: var(--c-line); }
.btn--ghost:hover { border-color: var(--c-ink); color: var(--c-ink); }

.btn--light { background: #fff; color: var(--c-ink); }
.btn--light:hover { color: var(--c-blue); }

/* Cartão genérico */
.card {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }

/* Ícone circular dos cartões */
.card__icon {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: var(--c-green-tint);
  color: var(--c-green-dark);
  margin-bottom: 1.25rem;
}
.card__icon--blue { background: var(--c-blue-tint); color: var(--c-blue); }
.card__icon svg { width: 28px; height: 28px; }

.card h3 { font-size: var(--fs-h3); margin-bottom: 0.5rem; }

/* Lista de pontos com visto */
.checklist { list-style: none; margin-top: 1rem; display: grid; gap: 0.5rem; }
.checklist li { display: flex; gap: 0.6rem; align-items: baseline; }
.checklist li::before {
  content: "✓";
  flex: none;
  font-weight: 800;
  color: var(--c-green-dark);
}

/* 5. CABEÇALHO E NAVEGAÇÃO
   ========================================================================== */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.site-header.is-scrolled { border-color: var(--c-line); box-shadow: var(--shadow-sm); }

.site-header .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand { display: inline-flex; align-items: center; gap: 0.65rem; }
.brand img { width: 42px; height: 42px; }
.brand__name { font-weight: 800; font-size: 1.2rem; color: var(--c-ink); letter-spacing: -0.01em; }
.brand__name span { color: var(--c-green-dark); }

.main-nav ul { list-style: none; display: flex; align-items: center; gap: 2rem; }
.main-nav a { font-weight: 600; color: var(--c-ink); position: relative; }
.main-nav a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0; right: 100%; bottom: -6px;
  height: 2px;
  background: var(--c-green);
  transition: right 0.2s ease;
}
.main-nav a:not(.btn):hover::after,
.main-nav a[aria-current="page"]::after { right: 0; }

/* Botão hambúrguer — visível apenas em mobile */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: none;
  border: 0;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 24px;
  margin-inline: auto;
  background: var(--c-ink);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 820px) {
  .nav-toggle { display: flex; }

  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    background: #fff;
    border-bottom: 1px solid var(--c-line);
    box-shadow: var(--shadow-md);
    padding: 1.25rem 1.5rem 1.75rem;
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.25s ease, opacity 0.25s ease, visibility 0.25s;
  }
  .main-nav.is-open { transform: translateY(0); opacity: 1; visibility: visible; }
  .main-nav ul { flex-direction: column; align-items: stretch; gap: 0.25rem; }
  .main-nav a { display: block; padding: 0.75rem 0.5rem; border-radius: var(--radius-sm); }
  .main-nav a:not(.btn):hover { background: var(--c-bg-soft); }
  .main-nav .btn { justify-content: center; margin-top: 0.75rem; }
}

/* 6. HERO
   ========================================================================== */
.hero {
  position: relative;
  display: grid;
  align-items: center;
  min-height: min(92vh, 820px);
  padding-top: var(--header-h);
  color: #fff;
  isolation: isolate;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
/* Véu escuro + gradiente da marca por cima da fotografia */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(115deg, rgba(10, 16, 34, 0.88) 0%, rgba(10, 16, 34, 0.65) 55%, rgba(31, 163, 74, 0.35) 100%);
}

.hero__content { max-width: 680px; padding-block: 5rem; }

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--fs-small);
  font-weight: 600;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(6px);
  padding: 0.4rem 1rem;
  border-radius: 999px;
  margin-bottom: 1.5rem;
}
.hero__badge::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--c-green); }

.hero h1 { color: #fff; font-size: var(--fs-hero); font-weight: 800; letter-spacing: -0.02em; margin-bottom: 1.25rem; }
.hero h1 em { font-style: normal; color: var(--c-green); }

.hero p { font-size: 1.2rem; color: rgba(255, 255, 255, 0.85); max-width: 56ch; margin-bottom: 2.25rem; }

.hero__actions { display: flex; flex-wrap: wrap; gap: 1rem; }

/* Faixa de métricas sobreposta à base do hero */
.stats {
  position: relative;
  z-index: 5;
  margin-top: -4.5rem;
}
.stats__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.stat {
  padding: 2rem 1.5rem;
  text-align: center;
  border-top: 1px solid var(--c-line);
}
.stat:first-child { border-top: 0; }
.stat strong { display: block; font-size: 2.2rem; font-weight: 800; color: var(--c-ink); letter-spacing: -0.02em; }
.stat strong span { color: var(--c-green-dark); }
.stat small { color: var(--c-muted); font-size: var(--fs-small); }

@media (min-width: 720px) {
  .stat { border-top: 0; border-left: 1px solid var(--c-line); }
  .stat:first-child { border-left: 0; }
}

/* 7. SECÇÕES ESPECÍFICAS
   ========================================================================== */

/* 7.1 Pilares / grelha de cartões */
.grid-3 { display: grid; gap: 1.5rem; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-2 { display: grid; gap: 1.5rem; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }

/* 7.2 Sobre nós (texto + imagem) */
.about { display: grid; gap: 3rem; align-items: center; }
@media (min-width: 920px) { .about { grid-template-columns: 1.05fr 1fr; } }

.about__media { position: relative; }
.about__media img { border-radius: var(--radius); box-shadow: var(--shadow-lg); aspect-ratio: 4 / 3; object-fit: cover; }
/* Selo "desde 2012" sobre a imagem */
.about__seal {
  position: absolute;
  left: -1rem;
  bottom: -1.25rem;
  background: var(--c-blue);
  color: #fff;
  border-radius: var(--radius);
  padding: 1.1rem 1.5rem;
  box-shadow: var(--shadow-md);
}
.about__seal strong { display: block; font-size: 1.6rem; color: #fff; line-height: 1.1; }
.about__seal small { opacity: 0.85; }

.about__text h2 { font-size: var(--fs-h2); margin-bottom: 1rem; }
.about__text p + p { margin-top: 1rem; }
.about__text .btn { margin-top: 1.75rem; }

/* 7.3 Galeria */
.gallery {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, 1fr);
}
@media (min-width: 720px) { .gallery { grid-template-columns: repeat(3, 1fr); } }
.gallery a {
  display: block;
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform 0.35s ease;
}
.gallery a:hover img { transform: scale(1.05); }

/* 7.4 Certificações */
.cert-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: clamp(1.5rem, 5vw, 4rem);
}
.cert-strip img {
  height: 64px;
  width: auto;
  object-fit: contain;
  filter: grayscale(1);
  opacity: 0.7;
  transition: filter 0.2s ease, opacity 0.2s ease;
}
.cert-strip img:hover { filter: none; opacity: 1; }

/* 7.5 Banda CTA */
.cta {
  background: linear-gradient(120deg, var(--c-blue) 0%, var(--c-blue-dark) 60%, #1c2a8f 100%);
  border-radius: var(--radius);
  padding: clamp(2.5rem, 6vw, 4.5rem);
  display: grid;
  gap: 1.5rem;
  align-items: center;
  text-align: center;
}
@media (min-width: 820px) { .cta { grid-template-columns: 1fr auto; text-align: left; } }
.cta h2 { color: #fff; font-size: var(--fs-h2); margin-bottom: 0.5rem; }
.cta p { color: rgba(255, 255, 255, 0.85); }
.cta .btn { justify-self: center; }

/* 7.6 Página de serviços — fila alternada texto/imagem */
.service-row { display: grid; gap: 2.5rem; align-items: center; }
@media (min-width: 920px) {
  .service-row { grid-template-columns: 1fr 1fr; }
  .service-row--flip > .service-row__media { order: 2; }
}
.service-row__media img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  aspect-ratio: 16 / 11;
  object-fit: cover;
}
.service-row h3 { font-size: 1.5rem; margin-bottom: 0.75rem; }
.service-row + .service-row { margin-top: clamp(3rem, 7vw, 5rem); }

/* 7.7 Contactos */
.contact-layout { display: grid; gap: 2.5rem; }
@media (min-width: 920px) { .contact-layout { grid-template-columns: 0.9fr 1.1fr; } }

.contact-card { display: flex; gap: 1.1rem; align-items: flex-start; }
.contact-card + .contact-card { margin-top: 1.5rem; }
.contact-card .card__icon { margin-bottom: 0; flex: none; }
.contact-card h3 { font-size: 1.1rem; margin-bottom: 0.15rem; }
.contact-card a { font-weight: 600; }

/* Formulário */
.form { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); padding: clamp(1.5rem, 4vw, 2.5rem); box-shadow: var(--shadow-sm); }
.form__grid { display: grid; gap: 1.1rem; }
@media (min-width: 620px) { .form__grid--2col { grid-template-columns: 1fr 1fr; } }

.field label { display: block; font-weight: 600; font-size: var(--fs-small); color: var(--c-ink); margin-bottom: 0.35rem; }
.field input,
.field textarea {
  width: 100%;
  font: inherit;
  color: var(--c-ink);
  background: var(--c-bg-soft);
  border: 1.5px solid var(--c-line);
  border-radius: var(--radius-sm);
  padding: 0.8rem 1rem;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.field input:focus,
.field textarea:focus { outline: none; border-color: var(--c-blue); background: #fff; }
.field textarea { resize: vertical; min-height: 140px; }

.map-embed {
  border: 0;
  width: 100%;
  height: 360px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

/* 7.8 Hero interno (páginas secundárias) */
.page-hero {
  padding: calc(var(--header-h) + clamp(3.5rem, 8vw, 6rem)) 0 clamp(3.5rem, 8vw, 5rem);
  background:
    radial-gradient(1100px 480px at 85% -10%, var(--c-blue-tint) 0%, transparent 60%),
    radial-gradient(900px 420px at 5% 110%, var(--c-green-tint) 0%, transparent 55%),
    var(--c-bg-soft);
}
.page-hero h1 { font-size: clamp(2rem, 4.5vw, 3rem); margin-bottom: 0.85rem; letter-spacing: -0.02em; }
.page-hero .lead { font-size: 1.15rem; color: var(--c-body); max-width: 62ch; }
.page-hero .btn { margin-top: 1.75rem; }

/* 8. RODAPÉ
   ========================================================================== */
.site-footer { background: #0c1322; color: #98a2bd; padding: 4.5rem 0 0; }
.site-footer a { color: #cdd5e8; }
.site-footer a:hover { color: var(--c-green); }

.footer-grid {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  padding-bottom: 3rem;
}
.footer-grid h4 { color: #fff; font-size: 1rem; margin-bottom: 1rem; }
.footer-grid ul { list-style: none; display: grid; gap: 0.6rem; }
.site-footer .brand__name { color: #fff; }
.footer-about p { margin-top: 1rem; max-width: 36ch; font-size: var(--fs-small); }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1.5rem 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: space-between;
  font-size: var(--fs-small);
}

/* 9. ANIMAÇÕES DE ENTRADA
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible { opacity: 1; transform: none; }

/* Respeita utilizadores com preferência por menos movimento */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn:hover, .card:hover { transform: none; }
}

/* 10. CONFORMIDADE LEGAL
   ========================================================================== */

/* 10.1 Bloco legal do rodapé (aviso legal + links obrigatórios) */
.footer-legal {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1.75rem 0;
  display: grid;
  gap: 1.1rem;
}
.footer-legal__info {
  font-size: 0.8rem;
  color: #6d7892;
  max-width: 90ch;
  line-height: 1.8;
}
.footer-legal__info a { color: #98a2bd; }
.footer-legal__links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.5rem;
  font-size: 0.8rem;
}
.footer-legal__links a { color: #98a2bd; }
.footer-legal__links a:hover { color: var(--c-green); }

/* Selo do Livro de Reclamações Eletrónico */
.lr-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  padding: 0.4rem 0.9rem;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  transition: border-color 0.2s ease;
}
.lr-badge:hover { border-color: var(--c-green); }
.lr-badge svg { width: 18px; height: 18px; flex: none; }

/* 10.2 Páginas legais (privacidade, termos, RAL) */
.legal-content {
  max-width: 760px;
  padding-block: clamp(3rem, 6vw, 4.5rem);
}
.legal-content h2 {
  font-size: 1.35rem;
  margin: 2.25rem 0 0.75rem;
  scroll-margin-top: calc(var(--header-h) + 16px);
}
.legal-content h3 { font-size: 1.05rem; margin: 1.5rem 0 0.5rem; }
.legal-content p + p { margin-top: 0.85rem; }
.legal-content ul { margin: 0.85rem 0 0.85rem 1.25rem; display: grid; gap: 0.4rem; }
.legal-content .legal-updated {
  font-size: var(--fs-small);
  color: var(--c-muted);
  margin-bottom: 0.5rem;
}
.legal-content .placeholder {
  background: #fff3cd;
  border-radius: 4px;
  padding: 0 0.3rem;
  font-weight: 600;
  color: #7a5b00;
}

/* 10.3 Banner de consentimento de cookies (vidro fosco) */
.cookie-banner {
  position: fixed;
  z-index: 200;
  inset: auto 1rem 1rem 1rem;
  max-width: 720px;
  margin-inline: auto;
  background: rgba(12, 19, 34, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.5rem;
  color: #cdd5e8;
  font-size: var(--fs-small);
  line-height: 1.6;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.35s ease, transform 0.35s ease;
}
.cookie-banner.is-visible { opacity: 1; transform: none; }
.cookie-banner p { flex: 1 1 320px; margin: 0; }
.cookie-banner a { color: #fff; text-decoration: underline; }
.cookie-banner a:hover { color: var(--c-green); }
.cookie-banner__actions { display: flex; gap: 0.6rem; flex: none; }
.cookie-banner .btn { padding: 0.55rem 1.3rem; font-size: var(--fs-small); }
.cookie-banner .btn--reject {
  background: transparent;
  color: #cdd5e8;
  border-color: rgba(255, 255, 255, 0.25);
}
.cookie-banner .btn--reject:hover { border-color: #fff; color: #fff; }