/* ========================================
   MATRIB FLORESTAL - ESTILOS PRINCIPAIS
   Cores: Verde Escuro, Verde Médio, Branco, Cinza Claro, Preto Suave
======================================== */

:root {
  --color-primary: #1b5e20;        /* Verde escuro */
  --color-primary-light: #2e7d32;  /* Verde médio */
  --color-primary-lighter: #66bb6a; /* Verde claro */
  --color-secondary: #f5f5f5;      /* Cinza claro */
  --color-dark: #1a1a1a;           /* Preto suave */
  --color-white: #ffffff;          /* Branco */
  --color-text: #333333;           /* Texto principal */
  --color-text-light: #666666;     /* Texto secundário */
  --color-accent: #81c784;         /* Verde suave para destaques */
  --color-border: #e0e0e0;         /* Borda cinza */
  
  --font-family-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-size-base: 16px;
  --line-height-base: 1.6;
  --spacing-unit: 8px;
}

/* ========================================
   RESET E NORMALIZAÇÃO
======================================== */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-main);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-white);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--color-primary-light);
}

/* ========================================
   TIPOGRAFIA
======================================== */

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-dark);
  margin-bottom: calc(var(--spacing-unit) * 2);
}

h1 {
  font-size: 2.5rem;
  margin-bottom: calc(var(--spacing-unit) * 3);
}

h2 {
  font-size: 2rem;
  margin-bottom: calc(var(--spacing-unit) * 2.5);
}

h3 {
  font-size: 1.5rem;
  margin-bottom: calc(var(--spacing-unit) * 2);
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: calc(var(--spacing-unit) * 2);
  color: var(--color-text-light);
}

.subtitle {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: calc(var(--spacing-unit) * 1.5);
}

/* ========================================
   LAYOUT E CONTAINERS
======================================== */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 calc(var(--spacing-unit) * 2);
}

.section {
  padding: calc(var(--spacing-unit) * 8) 0;
}

.section.dark {
  background-color: var(--color-dark);
  color: var(--color-white);
}

.section.dark p {
  color: #cccccc;
}

.section.light-bg {
  background-color: var(--color-secondary);
}

/* ========================================
   HEADER E NAVEGAÇÃO
======================================== */

header {
  background-color: var(--color-white);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: calc(var(--spacing-unit) * 1.5) 0;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: calc(var(--spacing-unit) * 1);
}

.logo-icon {
  width: 30px;
  height: 30px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
}

nav ul {
  display: flex;
  list-style: none;
  gap: calc(var(--spacing-unit) * 3);
}

nav a {
  color: var(--color-text);
  font-weight: 500;
  transition: color 0.3s ease;
}

nav a:hover,
nav a.active {
  color: var(--color-primary);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
}

/* ========================================
   BOTÕES
======================================== */

.btn {
  display: inline-block;
  padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 3);
  border-radius: 4px;
  font-weight: 600;
  text-align: center;
  transition: all 0.3s ease;
  cursor: pointer;
  border: 2px solid transparent;
  text-decoration: none;
  font-size: 0.95rem;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background-color: var(--color-primary-light);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-secondary:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn-white {
  background-color: var(--color-white);
  color: var(--color-primary);
}

.btn-white:hover {
  background-color: var(--color-secondary);
}

.btn-whatsapp {
  display: inline-flex;
  align-items: center;
  gap: calc(var(--spacing-unit) * 1);
  background-color: #25d366;
  color: white;
}

.btn-whatsapp:hover {
  background-color: #1faa50;
}

.btn-full-width {
  width: 100%;
}

.btn-group {
  display: flex;
  gap: calc(var(--spacing-unit) * 2);
  flex-wrap: wrap;
}

/* ========================================
   CARDS
======================================== */

.card {
  background-color: var(--color-white);
  border-radius: 8px;
  padding: calc(var(--spacing-unit) * 3);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  border: 1px solid var(--color-border);
}

.card:hover {
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
  transform: translateY(-4px);
}

.card h3 {
  color: var(--color-primary);
  margin-bottom: calc(var(--spacing-unit) * 1.5);
}

.card p {
  font-size: 0.95rem;
}

.card.dark {
  background-color: var(--color-dark);
  color: var(--color-white);
}

.card.dark h3 {
  color: var(--color-accent);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: calc(var(--spacing-unit) * 3);
  margin-top: calc(var(--spacing-unit) * 3);
}

/* ========================================
   BANNER PRINCIPAL
======================================== */

.hero-banner {
  background-color: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: var(--color-white);
  padding: calc(var(--spacing-unit) * 12) 0;
  text-align: center;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-banner.home {
  background: url('../img/principal.png') center / cover no-repeat;
  background-attachment: fixed;
}

.hero-banner.quem-somos {
  background: url('../img/Quem-somos.png') center / cover no-repeat;
  background-attachment: fixed;
}

.hero-banner.quem-somos h1,
.hero-banner.quem-somos p {
  color: #000000;
}

.hero-banner.green-solid {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.hero-content {
  max-width: 700px;
  z-index: 1;
}

.hero-banner .subtitle {
  color: var(--color-accent);
}

.hero-banner h1 {
  color: var(--color-white);
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.hero-banner p {
  color: #f0f0f0;
  font-size: 1.1rem;
  margin-bottom: calc(var(--spacing-unit) * 3);
}

/* ========================================
   FORMULÁRIOS
======================================== */

.form-group {
  margin-bottom: calc(var(--spacing-unit) * 2.5);
}

label {
  display: block;
  margin-bottom: calc(var(--spacing-unit) * 1);
  font-weight: 600;
  color: var(--color-text);
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="url"],
select,
textarea {
  width: 100%;
  padding: calc(var(--spacing-unit) * 1.5);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-family: var(--font-family-main);
  font-size: var(--font-size-base);
  transition: border-color 0.3s ease;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
input[type="url"]:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(27, 94, 32, 0.1);
}

textarea {
  resize: vertical;
  min-height: 150px;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: calc(var(--spacing-unit) * 2);
}

.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--spacing-unit) * 2);
  margin-top: calc(var(--spacing-unit) * 1);
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: calc(var(--spacing-unit) * 1);
}

input[type="checkbox"],
input[type="radio"] {
  cursor: pointer;
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
}

/* ========================================
   FOOTER
======================================== */

footer {
  background-color: var(--color-dark);
  color: #cccccc;
  padding: calc(var(--spacing-unit) * 6) 0 calc(var(--spacing-unit) * 3);
  margin-top: calc(var(--spacing-unit) * 6);
}

footer h3 {
  color: var(--color-white);
  margin-bottom: calc(var(--spacing-unit) * 2);
}

footer a {
  color: #cccccc;
}

footer a:hover {
  color: var(--color-accent);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: calc(var(--spacing-unit) * 4);
  margin-bottom: calc(var(--spacing-unit) * 4);
}

.footer-section ul {
  list-style: none;
}

.footer-section li {
  margin-bottom: calc(var(--spacing-unit) * 1.5);
}

.footer-bottom {
  border-top: 1px solid #444;
  padding-top: calc(var(--spacing-unit) * 3);
  text-align: center;
  font-size: 0.9rem;
}

.footer-contact {
  font-size: 0.95rem;
  line-height: 1.8;
}

/* ========================================
   UTILITÁRIOS
======================================== */

.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.mt-1 { margin-top: calc(var(--spacing-unit) * 1); }
.mt-2 { margin-top: calc(var(--spacing-unit) * 2); }
.mt-3 { margin-top: calc(var(--spacing-unit) * 3); }
.mt-4 { margin-top: calc(var(--spacing-unit) * 4); }

.mb-1 { margin-bottom: calc(var(--spacing-unit) * 1); }
.mb-2 { margin-bottom: calc(var(--spacing-unit) * 2); }
.mb-3 { margin-bottom: calc(var(--spacing-unit) * 3); }
.mb-4 { margin-bottom: calc(var(--spacing-unit) * 4); }

.pt-1 { padding-top: calc(var(--spacing-unit) * 1); }
.pt-2 { padding-top: calc(var(--spacing-unit) * 2); }
.pt-3 { padding-top: calc(var(--spacing-unit) * 3); }
.pt-4 { padding-top: calc(var(--spacing-unit) * 4); }

.pb-1 { padding-bottom: calc(var(--spacing-unit) * 1); }
.pb-2 { padding-bottom: calc(var(--spacing-unit) * 2); }
.pb-3 { padding-bottom: calc(var(--spacing-unit) * 3); }
.pb-4 { padding-bottom: calc(var(--spacing-unit) * 4); }

.hidden {
  display: none !important;
}

.visible {
  display: block !important;
}

.success {
  color: #4caf50;
}

.error {
  color: #f44336;
}

.warning {
  color: #ff9800;
}

.info {
  color: var(--color-primary);
}

/* ========================================
   ANIMAÇÕES
======================================== */

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.animate-fade-in {
  animation: fadeIn 0.6s ease-out;
}

.animate-slide-in-left {
  animation: slideInLeft 0.6s ease-out;
}

.animate-slide-in-right {
  animation: slideInRight 0.6s ease-out;
}

/* ========================================
   RESPONSIVIDADE
======================================== */

@media (max-width: 768px) {
  .container {
    padding: 0 calc(var(--spacing-unit) * 1.5);
  }

  .section {
    padding: calc(var(--spacing-unit) * 5) 0;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  h3 {
    font-size: 1.25rem;
  }

  nav ul {
    gap: calc(var(--spacing-unit) * 1.5);
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    padding: calc(var(--spacing-unit) * 2);
    display: none;
  }

  nav ul.active {
    display: flex;
  }

  .menu-toggle {
    display: block;
  }

  .btn-group {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .hero-banner {
    padding: calc(var(--spacing-unit) * 8) calc(var(--spacing-unit) * 2);
    min-height: 350px;
  }

  .hero-banner h1 {
    font-size: 1.75rem;
  }

  .hero-banner p {
    font-size: 1rem;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .cards-grid {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .header-content {
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 2);
  }

  .logo {
    font-size: 1.25rem;
  }

  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.25rem;
  }

  h3 {
    font-size: 1rem;
  }

  .hero-banner {
    padding: calc(var(--spacing-unit) * 6) calc(var(--spacing-unit) * 1.5);
    min-height: 300px;
  }

  .hero-banner h1 {
    font-size: 1.5rem;
  }

  .btn {
    padding: calc(var(--spacing-unit) * 1.25) calc(var(--spacing-unit) * 2.5);
  }

  .checkbox-group {
    flex-direction: column;
  }
}