/* ============================================
   EcoConsult — Estilos
   Paleta: verde escuro, branco, cinza claro
   ============================================ */

:root {
  --green-900: #0f3d24;
  --green-700: #1e5e3a;
  --green-500: #2e8b57;
  --green-300: #7cc295;
  --green-50:  #eaf5ef;
  --white:     #ffffff;
  --gray-50:   #f6f8f7;
  --gray-100:  #eef1ef;
  --gray-300:  #d4dad6;
  --gray-500:  #7b8580;
  --gray-700:  #3a4540;
  --gray-900:  #161b18;

  --radius: 14px;
  --shadow-sm: 0 1px 2px rgba(15,61,36,.06), 0 1px 3px rgba(15,61,36,.05);
  --shadow-md: 0 10px 30px -10px rgba(15,61,36,.18);
  --transition: 0.3s cubic-bezier(.4,0,.2,1);
}

/* Reset */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--gray-900);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; }

/* Layout */
.container { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section-alt { background: var(--gray-50); }

/* Tipografia */
h1, h2, h3, h4 { line-height: 1.2; color: var(--gray-900); font-weight: 700; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.2rem, 4.5vw, 3.6rem); }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); margin-bottom: 12px; }
h3 { font-size: 1.15rem; margin-bottom: 8px; }
h4 { font-size: 0.95rem; margin-bottom: 12px; color: var(--white); }
p  { color: var(--gray-700); }
.lead { font-size: 1.15rem; color: var(--gray-700); margin: 18px 0 32px; max-width: 540px; }
.muted { color: var(--gray-500); }
.small { font-size: 0.9rem; }
.accent { color: var(--green-700); }
.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green-700);
  background: var(--green-50);
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 16px;
}

/* Header */
.header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--gray-100);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 1.1rem; color: var(--green-900); }
.logo-mark { color: var(--green-500); font-size: 1.3rem; }
.nav-links { display: flex; gap: 32px; }
.nav-links a {
  font-size: 0.95rem; color: var(--gray-700); font-weight: 500;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--green-700); }

/* Botões */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 26px; border-radius: 999px; font-weight: 600; font-size: 0.95rem;
  transition: all var(--transition); white-space: nowrap;
}
.btn-sm { padding: 10px 18px; font-size: 0.88rem; }
.btn-primary { background: var(--green-700); color: var(--white); box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--green-900); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-ghost { color: var(--green-700); }
.btn-ghost:hover { color: var(--green-900); }
.btn-block { width: 100%; }

/* Hero */
.hero { padding: 80px 0 96px; background: linear-gradient(180deg, var(--green-50) 0%, var(--white) 100%); }
.hero-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 64px; align-items: center; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-visual svg { width: 100%; max-width: 460px; margin: 0 auto; }

/* Sobre */
.about-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 64px; align-items: start; }
.about-text p + p { margin-top: 16px; }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 36px; padding-top: 28px; border-top: 1px solid var(--gray-100); }
.stats div { display: flex; flex-direction: column; }
.stats strong { font-size: 1.8rem; color: var(--green-700); font-weight: 700; }
.stats span { font-size: 0.85rem; color: var(--gray-500); }

/* Section head */
.section-head { text-align: center; max-width: 640px; margin: 0 auto 56px; }
.section-head p { color: var(--gray-500); }

/* Serviços */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 32px;
  transition: all var(--transition);
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--green-300);
}
.service-card .icon {
  width: 48px; height: 48px;
  display: grid; place-items: center;
  border-radius: 12px;
  background: var(--green-50);
  color: var(--green-700);
  margin-bottom: 20px;
  transition: all var(--transition);
}
.service-card:hover .icon { background: var(--green-700); color: var(--white); }
.service-card .icon svg { width: 24px; height: 24px; }
.service-card p { font-size: 0.95rem; color: var(--gray-500); }

/* Contacto */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 64px; align-items: start; }
.contact-info { list-style: none; margin-top: 28px; }
.contact-info li { padding: 10px 0; border-bottom: 1px solid var(--gray-100); font-size: 0.95rem; color: var(--gray-700); }

.card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow-sm);
}
.form .field { margin-bottom: 18px; }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--gray-700); margin-bottom: 6px; }
.form input, .form select, .form textarea {
  width: 100%; padding: 12px 14px;
  font: inherit; color: var(--gray-900);
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
  border-radius: 10px;
  transition: all var(--transition);
}
.form input:focus, .form select:focus, .form textarea:focus {
  outline: none;
  background: var(--white);
  border-color: var(--green-500);
  box-shadow: 0 0 0 4px var(--green-50);
}
.form textarea { resize: vertical; min-height: 120px; }
.form input.invalid, .form select.invalid, .form textarea.invalid {
  border-color: #d9534f; background: #fdf2f2;
}

.feedback { margin-top: 14px; font-size: 0.9rem; min-height: 1.2em; }
.feedback.success { background-color: var(--green-700); color: #fff; padding: 10px !important; border-radius: 8px !important; }
.feedback.error   { color: #d9534f; }

/* Spinner */a
.spinner {
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: var(--white);
  border-radius: 50%;
  display: none;
  animation: spin 0.7s linear infinite;
}
.btn.loading .spinner { display: inline-block; }
.btn.loading .btn-label { opacity: 0.7; }
.btn.loading { pointer-events: none; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Footer */
.footer { background: var(--green-900); color: var(--white); padding: 64px 0 24px; margin-top: 0; }
.footer .logo-light { color: var(--white); }
.footer .logo-light .logo-mark { color: var(--green-300); }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 48px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,.1); }
.footer p, .footer .small, .footer .muted { color: rgba(255,255,255,0.65); }
.footer-bottom { padding-top: 24px; text-align: center; color: rgba(255,255,255,.5); font-size: 0.85rem; }
.socials { display: flex; gap: 10px; }
.socials a {
  width: 36px; height: 36px; display: grid; place-items: center;
  background: rgba(255,255,255,.08); border-radius: 50%;
  font-size: 0.75rem; font-weight: 600; text-transform: uppercase;
  transition: all var(--transition);
}
.socials a:hover { background: var(--green-500); transform: translateY(-2px); }

/* Reveal animations */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s ease, transform .8s ease; }
.reveal.in { opacity: 1; transform: none; }

/* Responsivo */
@media (max-width: 960px) {
  .hero-grid, .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { order: -1; max-width: 360px; margin: 0 auto; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .section { padding: 72px 0; }
}
@media (max-width: 640px) {
  .nav-links { display: none; }
  .services-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .form .row { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .card { padding: 24px; }
}