/* Reset e estilos base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-primary-green: #27ae60;
  --color-primary-green-darker: #1e8449;
  --color-primary-green-light: #d6f5e8;

  --color-primary-red: #c0392b;
  --color-primary-red-darker: #a93226;
  --color-primary-red-light: #f8d7da;
  --color-accent-blue: #2980b9;
  --color-accent-blue-darker: #21618c;
  --color-secondary-dark: #34495e;
  --color-text-medium: #7f8c8d;
  --color-text-light: #333b41;
  --color-background-light: #ecf0f1;
  --color-background-card: #fff;
  --color-border-light: #dee2e6;
  --color-hover-light: #f8f9fa;

  --spacing-unit: 1rem;
  --border-radius-default: 8px;
  --box-shadow-default: 0 4px 15px rgba(0, 0, 0, 0.1);
  --transition-speed: 0.3s;

  --color-warning: #f39c12;
  --color-warning-darker: #e67e22;
  --color-warning-light: #fdf3d7;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--color-secondary-dark);
  background-color: var(--color-background-light);
}

a {
  text-decoration: none;
  color: var(--color-accent-blue);
  transition: color var(--transition-speed);
}

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

ul {
  list-style: none;
}

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

header {
  background-color: var(--color-background-card);
  box-shadow: var(--box-shadow-default);
  padding: var(--spacing-unit);
  position: sticky;
  top: 0;
  z-index: 1000;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

.logo h1 {
  font-size: 1.8rem;
  color: var(--color-primary-green);
  margin: 0;
}

.logo h1 span:first-child {
  color: var(--color-primary-green);
}

.logo h1 span:last-child {
  color: var(--color-primary-red);
}


.nav-links {
  display: flex;
  gap: var(--spacing-unit);
  align-items: center;
}

.nav-links a {
  padding: 8px 12px;
  border-radius: 4px;
  transition: background-color var(--transition-speed), color var(--transition-speed);
  color: var(--color-secondary-dark);
}

.nav-links a:hover {
  background-color: var(--color-hover-light);
  color: var(--color-primary-green-darker);
}

/* Botões */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 10px 20px;
  border-radius: var(--border-radius-default);
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition-speed), transform 0.2s, box-shadow var(--transition-speed);
  border: none;
  text-align: center;
  white-space: nowrap;
  color: white !important;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  /* Sombra leve para todos os botões */
}

.btn:hover {
  transform: translateY(-3px);
  /* Mais destaque no hover */
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
  /* Sombra mais forte no hover */
}

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

.primary-btn:hover {
  background-color: var(--color-primary-green-darker);
}

.secondary-btn {
  background-color: var(--color-accent-blue);
}

.secondary-btn:hover {
  background-color: var(--color-accent-blue-darker);
}

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

.danger-btn:hover {
  background-color: var(--color-primary-red-darker);
}

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

.warning-btn:hover {
  background-color: var(--color-warning-darker);
}

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

.success-btn:hover {
  background-color: var(--color-primary-green-darker);
}

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

.register-btn:hover {
  background-color: var(--color-primary-green-darker);
}

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

.logout-btn:hover {
  background-color: var(--color-primary-red-darker);
}


/* Hero section */
.hero {
  background-color: var(--color-primary-green);
  /* Verde primário */
  color: white;
  padding: calc(var(--spacing-unit) * 5) calc(var(--spacing-unit) * 2);
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero h2 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-unit);
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: calc(var(--spacing-unit) * 1.5);
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: calc(var(--spacing-unit) * 1.25);
}

/* Features section */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: calc(var(--spacing-unit) * 1.5);
  padding: calc(var(--spacing-unit) * 3) calc(var(--spacing-unit) * 2);
  max-width: 1200px;
  margin: 0 auto;
}

.feature-card {
  background-color: var(--color-background-card);
  padding: calc(var(--spacing-unit) * 1.5);
  border-radius: var(--border-radius-default);
  box-shadow: var(--box-shadow-default);
  text-align: center;
  transition: transform var(--transition-speed);
}

.feature-card:hover {
  transform: translateY(-8px);
  /* Mais destaque no hover */
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.feature-card h3 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--color-secondary-dark);
}

/* Footer */
footer {
  background-color: var(--color-secondary-dark);
  color: white;
  text-align: center;
  padding: var(--spacing-unit);
  margin-top: calc(var(--spacing-unit) * 3);
}

/* Formulários - Estilos genéricos consolidados aqui */
.auth-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: calc(100vh - 150px);
  padding: var(--spacing-unit);
}

.auth-card {
  background-color: var(--color-background-card);
  padding: calc(var(--spacing-unit) * 1.5);
  border-radius: var(--border-radius-default);
  box-shadow: var(--box-shadow-default);
  width: 100%;
  max-width: 400px;
}

.auth-card h2 {
  text-align: center;
  margin-bottom: calc(var(--spacing-unit) * 1.25);
  color: var(--color-secondary-dark);
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--color-secondary-dark);
}

.form-group input:not([type="checkbox"]),
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--color-border-light);
  border-radius: 4px;
  font-size: 1rem;
  color: var(--color-secondary-dark);
  background-color: var(--color-background-card);
  transition: border-color var(--transition-speed);
}

.form-group input:focus:not([type="checkbox"]),
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--color-accent-blue);
  outline: none;
  box-shadow: 0 0 0 2px rgba(var(--color-accent-blue), 0.3);
  /* Sombra de foco mais visível */
}

/* Estilo para campos com erro de validação (usado pelo JS) */
.form-group input.error,
.form-group textarea.error,
.form-group select.error {
  border-color: var(--color-primary-red);
  box-shadow: 0 0 0 2px rgba(var(--color-primary-red), 0.3);
}

.radio-group {
  display: flex;
  gap: calc(var(--spacing-unit) * 1.25);
}

.auth-links {
  margin-top: calc(var(--spacing-unit) * 1.25);
  text-align: center;
}

.auth-links a {
  color: var(--color-accent-blue);
}

/* Mensagens de feedback */
.message {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  padding: 12px 20px;
  border-radius: var(--border-radius-default);
  z-index: 10000;
  opacity: 0;
  transition: opacity 0.3s ease-in-out, transform 0.3s ease-in-out;
  box-shadow: var(--box-shadow-default);
  min-width: 250px;
  text-align: center;
}

.message.show {
  opacity: 1;
  transform: translateX(-50%);
}

.error-message {
  background-color: var(--color-primary-red-light);
  color: var(--color-primary-red-darker);
  border: 1px solid darken(var(--color-primary-red-light), 5%);
  padding: var(--spacing-unit);
  border-radius: var(--border-radius-default);
  margin-bottom: var(--spacing-unit);
}

.alert {
  padding: var(--spacing-unit);
  border-radius: var(--border-radius-default);
  margin-bottom: var(--spacing-unit);
  font-weight: 500;
}

.alert-danger {
  background-color: var(--color-primary-red-light);
  color: var(--color-primary-red-darker);
  border: 1px solid darken(var(--color-primary-red-light), 5%);
}

.alert-success {
  background-color: var(--color-primary-green-light);
  color: var(--color-primary-green-darker);
  border: 1px solid darken(var(--color-primary-green-light), 5%);
}

.checkbox {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.checkbox input {
  margin-top: 3px;
}

/* Responsividade Geral */
@media (max-width: 768px) {
  .container {
    padding: var(--spacing-unit);
  }

  nav {
    flex-direction: column;
    padding: calc(var(--spacing-unit) * 0.5);
  }

  .nav-links {
    margin-top: var(--spacing-unit);
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
  }

  .hero {
    padding: calc(var(--spacing-unit) * 3) 0.5rem;
  }

  .hero h2 {
    font-size: 2rem;
  }

  .hero-buttons {
    flex-direction: column;
    gap: 0.5rem;
  }

  .features {
    padding: calc(var(--spacing-unit) * 2) 0.5rem;
  }

  .feature-card {
    padding: var(--spacing-unit);
  }

  .auth-container {
    padding: 0;
    min-height: calc(100vh - 100px);
  }

  .auth-card {
    border-radius: 0;
    box-shadow: none;
    padding: var(--spacing-unit);
  }

  footer {
    margin-top: calc(var(--spacing-unit) * 2);
  }
}