:root {
  --primary: #16344b;
  --primary-light: #24536d;
  --accent: #16856b;
  --background: #f3f6f9;
  --surface: #ffffff;
  --text: #203344;
  --muted: #66798a;
  --border: #dce5ec;
  --danger: #b42318;
  --radius: 12px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, Helvetica, sans-serif;
  background: var(--background);
  color: var(--text);
  line-height: 1.5;
}

[hidden] {
  display: none !important;
}

header {
  background: var(--primary);
  color: white;
  padding: 24px 6%;
}


.brand {
  display: flex;
  align-items: center;
  gap: 18px;
}

.brand-logo {
  width: 76px;
  height: 76px;
  object-fit: contain;
  background: #ffffff;
  padding: 7px;
  border-radius: 12px;
  flex-shrink: 0;
}

.brand-text {
  min-width: 0;
}

@media (max-width: 600px) {
  .brand {
    gap: 12px;
  }

  .brand-logo {
    width: 58px;
    height: 58px;
    padding: 5px;
  }
}

header h1 {
  margin: 0;
  font-size: 25px;
  letter-spacing: -0.5px;
}

header p {
  margin: 5px 0 0;
  color: #c6d8e5;
  font-size: 14px;
}

main {
  max-width: 1100px;
  margin: 36px auto;
  padding: 0 20px;
}

#login {
  max-width: 420px;
  margin: 55px auto;
}

#login,
#dashboard > section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: 0 4px 18px rgba(22, 52, 75, 0.05);
}

h2 {
  margin-top: 0;
  color: var(--primary);
  font-size: 22px;
}

h3 {
  color: var(--primary);
  font-size: 17px;
  margin-top: 0;
}

form {
  display: flex;
  flex-direction: column;
  gap: 11px;
}

label {
  font-size: 14px;
  font-weight: 600;
}

input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
  background: white;
  color: var(--text);
}

input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

button {
  padding: 12px 18px;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: white;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

button:hover {
  filter: brightness(0.93);
}

button:focus-visible {
  outline: 3px solid var(--primary-light);
  outline-offset: 3px;
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

#login-form button {
  margin-top: 12px;
}

#login-message {
  min-height: 22px;
  font-size: 14px;
  color: var(--danger);
}

#dashboard > section {
  margin-top: 20px;
}

#user-info {
  color: var(--muted);
}

#logout-button {
  background: var(--primary-light);
}

#clientes-lista,
#fazendas-lista,
#controladores-lista {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

@media (max-width: 600px) {
  header {
    padding: 20px;
  }

  header h1 {
    font-size: 21px;
  }

  main {
    margin: 20px auto;
    padding: 0 12px;
  }

  #login {
    margin: 25px auto;
  }

  #login,
  #dashboard > section {
    padding: 20px;
  }

  #clientes-lista,
  #fazendas-lista,
  #controladores-lista {
    grid-template-columns: 1fr;
  }
}