/* ================================================================
   Expert Gestão Rural — Folha de Estilos Principal
   Arquivo: css/style.css

   ESTRATÉGIA: Mobile-first
   - Estilos base = mobile (coluna única, menu oculto)
   - @media (min-width: 768px) = ativa grids e menu horizontal
================================================================ */


/* ----------------------------------------------------------------
   1. VARIÁVEIS CSS
---------------------------------------------------------------- */
:root {
  --color-primary:        #1c4d12;
  --color-primary-light:  #3a7a22;
  --color-primary-xlight: #7cb84a;
  --color-primary-bg:     #f5f7f2;
  --color-primary-soft:   #e8f0e0;
  --color-primary-border: #dde8d4;
  --color-card-bg:        #f8faf5;

  --color-dark:           #1a2214;
  --color-text:           #1a2214;
  --color-text-muted:     #5a6650;
  --color-text-light:     #4a5840;
  --color-border:         #eae8e0;

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:    'DM Sans', system-ui, sans-serif;

  --fs-xs:  0.75rem;
  --fs-sm:  0.875rem;
  --fs-md:  1rem;
  --fs-lg:  1.125rem;
  --fs-xl:  1.5rem;
  --fs-2xl: 1.75rem;
  --fs-3xl: 2.125rem;
  --fs-4xl: 2.5rem;

  --space-xs:  0.5rem;
  --space-sm:  0.75rem;
  --space-md:  1rem;
  --space-lg:  1.5rem;
  --space-xl:  2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  --radius-sm:   4px;
  --radius-md:   6px;
  --radius-lg:   10px;
  --radius-pill: 20px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.10);

  --transition: 0.2s ease;

  --container-max: 1080px;
  --header-height: 60px;  /* Mobile */
}


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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-md);
  font-weight: 400;
  line-height: 1.7;
  color: var(--color-text);
  background-color: #ffffff;
  -webkit-font-smoothing: antialiased;
}

img  { max-width: 100%; height: auto; display: block; }
a    { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
input, textarea, button { font-family: inherit; font-size: inherit; }

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}


/* ----------------------------------------------------------------
   3. LAYOUT UTILITÁRIOS
---------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

.section { padding-block: var(--space-2xl); }

.section__tag {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary-light);
  margin-bottom: var(--space-xs);
}

.section__title {
  font-family: var(--font-display);
  font-size: var(--fs-2xl);
  font-weight: 600;
  line-height: 1.25;
  color: var(--color-dark);
  margin-bottom: var(--space-sm);
}

.section__subtitle {
  font-size: var(--fs-sm);
  font-weight: 300;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-xl);
}

.section__header { margin-bottom: var(--space-xl); }


/* ----------------------------------------------------------------
   4. COMPONENTES
---------------------------------------------------------------- */

/* Botões */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  font-weight: 500;
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition), border-color var(--transition);
  border: 1.5px solid transparent;
  text-decoration: none;
  white-space: nowrap;
}

.btn--primary {
  background-color: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}
.btn--primary:hover { background-color: var(--color-primary-light); border-color: var(--color-primary-light); }

.btn--outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn--outline:hover { background-color: var(--color-primary-soft); }

.btn--full { width: 100%; }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }

/* Tag e Badge */
.tag {
  display: inline-block;
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.3rem 0.875rem;
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-md);
}

.badge {
  display: inline-block;
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 0.688rem;
  font-weight: 500;
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-sm);
}


/* ----------------------------------------------------------------
   5. HEADER / NAVEGAÇÃO
   Mobile-first:
   - Hambúrguer visível por padrão
   - Menu oculto por padrão (position:fixed fora da viewport)
   - Desktop (768px+): menu horizontal, hambúrguer oculto
---------------------------------------------------------------- */

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: #ffffff;
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}
.header--scrolled { box-shadow: var(--shadow-md); }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

/* Logo: tamanho mobile */
.nav__logo img {
  height: 96px;
  width: auto;
  object-fit: contain;
}

/* Hambúrguer: sempre visível no mobile */
.nav__toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
  min-width: 40px;
  min-height: 40px;
  flex-shrink: 0;
}

.nav__toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-dark);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Menu mobile: painel abaixo do header, oculto por padrão */
.nav__menu {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  z-index: 99;
  background-color: #ffffff;
  border-top: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  padding: var(--space-sm) var(--space-md) var(--space-md);

  display: flex;
  flex-direction: column;
  gap: 0;

  /* Oculto por padrão */
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease;
}

/* Aberto via JS */
.nav__menu--open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* Links no mobile */
.nav__link {
  display: block;
  padding: 0.875rem var(--space-sm);
  font-size: var(--fs-md);
  font-weight: 400;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
  border-radius: 0;
  transition: color var(--transition), background-color var(--transition);
}

.nav__link:last-child { border-bottom: none; }

.nav__link:hover, .nav__link.active {
  color: var(--color-primary);
  background-color: var(--color-primary-soft);
  border-radius: var(--radius-md);
}

.nav__link--cta {
  margin-top: var(--space-sm);
  background-color: var(--color-primary) !important;
  color: #ffffff !important;
  border-radius: var(--radius-md) !important;
  text-align: center;
  border-bottom: none !important;
  font-weight: 500;
  padding: 0.75rem var(--space-sm);
}
.nav__link--cta:hover { background-color: var(--color-primary-light) !important; }


/* ----------------------------------------------------------------
   6. SEÇÕES — Base mobile (coluna única, flex)
---------------------------------------------------------------- */

/* Hero */
.hero {
  background-color: var(--color-primary-bg);
  border-bottom: 1px solid #e0ddd5;
  padding-block: var(--space-2xl);
}

.hero__grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--fs-3xl);
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-dark);
  margin-bottom: var(--space-md);
}

.hero__description {
  font-size: var(--fs-sm);
  font-weight: 300;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.hero__actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.hero__image {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.hero__image-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #8fb876 0%, #4a7a2a 55%, var(--color-primary) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
}

.hero__image-placeholder p {
  font-size: var(--fs-xs);
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* Strip */
.strip {
  background-color: var(--color-primary);
  color: #ffffff;
  padding-block: var(--space-lg);
}

.strip p {
  font-size: var(--fs-sm);
  font-weight: 300;
  line-height: 1.65;
  text-align: center;
  opacity: 0.95;
}

.strip strong { font-weight: 500; }

/* Sobre */
.about {
  background-color: #ffffff;
  border-bottom: 1px solid var(--color-border);
}

.about__grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.about__text {
  font-size: var(--fs-sm);
  font-weight: 300;
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: var(--space-md);
}

.about__text strong { font-weight: 500; color: var(--color-dark); }

.about__values {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.value-item { display: flex; gap: var(--space-md); align-items: flex-start; }

.value-item__icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  background-color: var(--color-primary-soft);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.value-item strong { display: block; font-size: var(--fs-sm); font-weight: 500; color: var(--color-dark); margin-bottom: 2px; }
.value-item p { font-size: var(--fs-sm); font-weight: 300; color: var(--color-text-muted); }

/* Serviços */
.services {
  background-color: var(--color-card-bg);
  border-bottom: 1px solid var(--color-border);
}

.services__grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.service-card {
  background-color: #ffffff;
  border: 1px solid var(--color-primary-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: box-shadow var(--transition), transform var(--transition);
}

.service-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }

.service-card__num {
  display: block;
  font-size: var(--fs-xs);
  font-weight: 500;
  color: var(--color-primary-xlight);
  letter-spacing: 0.08em;
  margin-bottom: var(--space-sm);
}

.service-card__icon {
  width: 44px;
  height: 44px;
  background-color: var(--color-primary-soft);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
}

.service-card__title { font-size: var(--fs-md); font-weight: 500; color: var(--color-dark); margin-bottom: var(--space-xs); line-height: 1.35; }
.service-card__description { font-size: var(--fs-sm); font-weight: 300; color: var(--color-text-muted); line-height: 1.65; margin-bottom: var(--space-md); }
.service-card__tags { display: flex; flex-wrap: wrap; gap: var(--space-xs); }

/* Approach */
.approach {
  background-color: var(--color-primary-bg);
  border-bottom: 1px solid #e0ddd5;
}

.approach__grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.approach__steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.step { display: flex; gap: var(--space-md); align-items: flex-start; }

.step__num {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  background-color: var(--color-primary);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-xs);
  font-weight: 500;
}

.step__title { font-size: var(--fs-sm); font-weight: 500; color: var(--color-dark); margin-bottom: 4px; }
.step__description { font-size: var(--fs-sm); font-weight: 300; color: var(--color-text-muted); line-height: 1.6; }

.approach__callout {
  background-color: var(--color-primary);
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
}

.approach__callout h3 {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  font-weight: 600;
  margin-bottom: var(--space-md);
  line-height: 1.3;
}

.approach__callout p { font-size: var(--fs-sm); font-weight: 300; line-height: 1.7; opacity: 0.9; margin-bottom: var(--space-lg); }

.callout__badge {
  display: inline-block;
  background-color: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.25);
  color: rgba(255,255,255,0.92);
  font-size: var(--fs-xs);
  padding: 0.4rem 0.875rem;
  border-radius: var(--radius-md);
}

/* Contato */
.contact { background-color: #ffffff; }

.contact__grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.contact__description { font-size: var(--fs-sm); font-weight: 300; color: var(--color-text-muted); line-height: 1.7; margin-bottom: var(--space-xl); }
.contact__list { display: flex; flex-direction: column; gap: var(--space-sm); }
.contact__item { display: flex; align-items: center; gap: var(--space-sm); }

.contact__icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  background-color: var(--color-primary-soft);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact__link { font-size: var(--fs-sm); color: var(--color-text-muted); transition: color var(--transition); }
.contact__link:hover { color: var(--color-primary); }

.contact__form-wrapper {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-primary-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-md);
}

/* Formulário */
.form__row { display: flex; flex-direction: column; gap: var(--space-sm); }
.form__group { margin-bottom: var(--space-sm); }

.form__label {
  display: block;
  font-size: var(--fs-xs);
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: 5px;
}

.form__label span { color: var(--color-primary); }

.form__input,
.form__textarea {
  width: 100%;
  padding: 0.65rem 0.875rem;
  background-color: #ffffff;
  border: 1px solid #ccd8bf;
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  font-weight: 300;
  color: var(--color-dark);
  transition: border-color var(--transition);
  -webkit-appearance: none;
  appearance: none;
}

.form__input:focus,
.form__textarea:focus { outline: none; border-color: var(--color-primary); }

.form__input.input--error,
.form__textarea.input--error { border-color: #c0392b; }

.form__textarea { resize: vertical; min-height: 96px; }

.form__error { display: block; font-size: var(--fs-xs); color: #c0392b; margin-top: 4px; min-height: 16px; }

.form__honeypot { position: absolute; left: -9999px; top: auto; width: 1px; height: 1px; overflow: hidden; }

.form__feedback {
  margin-top: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  text-align: center;
}

.form__feedback--success { background-color: #e8f5e9; color: #2e7d32; border: 1px solid #a5d6a7; }
.form__feedback--error   { background-color: #fdecea; color: #c62828; border: 1px solid #ef9a9a; }


/* ----------------------------------------------------------------
   7. FOOTER — Mobile: coluna única
---------------------------------------------------------------- */
.footer { background-color: var(--color-dark); }

.footer__grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  padding-top: var(--space-xl);
  padding-bottom: var(--space-lg);
}

.footer__brand img { margin-bottom: var(--space-md); }
.footer__tagline { font-size: var(--fs-sm); font-weight: 300; color: rgba(255,255,255,0.4); line-height: 1.65; }

.footer__links-title {
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
  margin-bottom: var(--space-sm);
}

.footer__links ul { display: flex; flex-direction: column; gap: var(--space-xs); }
.footer__link { font-size: var(--fs-sm); font-weight: 300; color: rgba(255,255,255,0.55); transition: color var(--transition); }
a.footer__link:hover { color: rgba(255,255,255,0.9); }

.footer__bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-block: var(--space-md); }
.footer__bottom p { font-size: var(--fs-xs); font-weight: 300; color: rgba(255,255,255,0.28); text-align: center; }
.footer__version {
  margin-left: 0.45rem;
  font-size: 0.72em;
  letter-spacing: 0.04em;
  opacity: 0.55;
}


/* ----------------------------------------------------------------
   8. BOTÃO WHATSAPP
---------------------------------------------------------------- */
.whatsapp-btn {
  position: fixed;
  bottom: var(--space-md);
  right: var(--space-md);
  z-index: 90;
  width: 52px;
  height: 52px;
  background-color: #25d366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(37,211,102,0.4);
  transition: background-color var(--transition), transform var(--transition);
}

.whatsapp-btn:hover { background-color: #1da851; transform: scale(1.08); }


/* ================================================================
   9. DESKTOP — min-width: 768px
   Ativa grids, exibe menu horizontal, oculta hambúrguer
================================================================ */
@media (min-width: 768px) {

  :root { --header-height: 72px; }

  .container { padding-inline: var(--space-xl); }
  .section   { padding-block:  var(--space-3xl); }

  /* Nav desktop */
  .nav__logo img { height: 144px; }

  .nav__toggle { display: none; } /* Oculta hambúrguer */

  /* Menu: linha horizontal estática */
  .nav__menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    flex-direction: row;
    align-items: center;
    gap: var(--space-xl);
    padding: 0;
    background: none;
    border: none;
    box-shadow: none;
  }

  .nav__link {
    display: inline-block;
    padding: 0;
    font-size: var(--fs-sm);
    border-bottom: none;
    position: relative;
  }

  .nav__link:hover, .nav__link.active {
    background-color: transparent;
    border-radius: 0;
  }

  /* Sublinhado animado */
  .nav__link:not(.nav__link--cta)::after {
    content: '';
    position: absolute;
    bottom: -2px; left: 0;
    width: 0; height: 1.5px;
    background-color: var(--color-primary);
    transition: width var(--transition);
  }
  .nav__link:not(.nav__link--cta):hover::after,
  .nav__link:not(.nav__link--cta).active::after { width: 100%; }

  .nav__link--cta {
    margin-top: 0;
    padding: 0.5rem 1.25rem !important;
    border-radius: var(--radius-md) !important;
    text-align: left;
    background-color: var(--color-primary) !important;
  }

  /* Grids das seções */
  .hero__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
  }

  .hero { padding-block: var(--space-3xl); }
  .hero__title { font-size: var(--fs-4xl); }
  .hero__description { font-size: var(--fs-md); }
  .hero__actions { flex-direction: row; }
  .hero__image { aspect-ratio: 4 / 3; }

  .about__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: start;
  }

  .services__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
  }

  .approach__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
  }

  .contact__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: start;
  }

  .form__row { flex-direction: row; }

  .footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--space-2xl);
    padding-top: var(--space-2xl);
  }

  .footer__tagline { max-width: 260px; }

  .whatsapp-btn { bottom: var(--space-xl); right: var(--space-xl); width: 56px; height: 56px; }
}


/* ================================================================
   TABLET (768px – 1023px): Serviços em 2 colunas
================================================================ */
@media (min-width: 768px) and (max-width: 1023px) {
  .services__grid { grid-template-columns: repeat(2, 1fr); }
  .service-card:last-child {
    grid-column: 1 / -1;
    max-width: calc(50% - var(--space-xs));
    margin-inline: auto;
  }
}