:root {
  --bg-main: #f4f6f9;
  --bg-card: #ffffff;
  --primary: #1e3a8a;
  --primary-hover: #1d4ed8;
  --accent: #10b981;
  --danger: #ef4444;
  --text-dark: #1f2937;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --radius: 12px;
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -1px rgba(0,0,0,0.03);
}

* { 
  box-sizing: border-box; 
  margin: 0; 
  padding: 0; 
  font-family: 'Inter', system-ui, -apple-system, sans-serif; 
}

body { 
  background-color: var(--bg-main); 
  color: var(--text-dark); 
  min-height: 100vh; 
}

.hidden { display: none !important; }

/* TELAS DE AUTENTICAÇÃO */
.login-container { 
  display: flex; 
  align-items: center; 
  justify-content: center; 
  min-height: 100vh; 
  padding: 1rem; 
}

.login-card { 
  background: var(--bg-card); 
  padding: 2.5rem; 
  border-radius: var(--radius); 
  box-shadow: var(--shadow); 
  width: 100%; 
  max-width: 400px; 
}

.login-card h2 { 
  color: var(--primary); 
  margin-bottom: 0.5rem; 
  text-align: center; 
}

.login-card p { 
  color: var(--text-muted); 
  font-size: 0.9rem; 
  text-align: center; 
  margin-bottom: 1.5rem; 
}

/* COMPONENTES DE FORMULÁRIO E BOTAO */
.form-group { margin-bottom: 1.2rem; }

.form-group label { 
  display: block; 
  margin-bottom: 0.4rem; 
  font-weight: 500; 
  font-size: 0.85rem; 
  color: var(--text-dark); 
}

.form-control { 
  width: 100%; 
  padding: 0.75rem 1rem; 
  border: 1px solid var(--border); 
  border-radius: 8px; 
  font-size: 0.95rem; 
  outline: none; 
  transition: 0.2s; 
}

.form-control:focus { 
  border-color: var(--primary); 
  box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1); 
}

.btn { 
  width: 100%; 
  padding: 0.75rem 1rem; 
  border: none; 
  border-radius: 8px; 
  font-size: 0.95rem; 
  font-weight: 600; 
  cursor: pointer; 
  transition: 0.2s; 
  display: inline-flex; 
  align-items: center; 
  justify-content: center; 
  gap: 0.5rem; 
}

.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-accent { background: var(--accent); color: white; }
.btn-danger { background: var(--danger); color: white; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text-dark); }

.btn-link-discreto {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  text-decoration: underline;
  transition: color 0.2s;
}
.btn-link-discreto:hover { color: var(--primary); }

/* DASHBOARD LAYOUT */
.navbar { 
  background: var(--bg-card); 
  padding: 1rem 1.5rem; 
  border-bottom: 1px solid var(--border); 
  display: flex; 
  justify-content: space-between; 
  align-items: center; 
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar .brand { font-size: 1.25rem; font-weight: 700; color: var(--primary); }
.dashboard-container { max-width: 1400px; margin: 0 auto; padding: 1.5rem; }

.header-panel { 
  background: var(--bg-card); 
  padding: 1.5rem; 
  border-radius: var(--radius); 
  box-shadow: var(--shadow); 
  margin-bottom: 1.5rem; 
  display: flex; 
  flex-wrap: wrap; 
  justify-content: space-between; 
  align-items: center; 
  gap: 1rem; 
}

.aviario-details { display: flex; gap: 1.5rem; margin-top: 0.5rem; font-size: 0.9rem; color: var(--text-muted); }

/* CARDS DE SENSORES */
.section-title { font-size: 1.1rem; font-weight: 600; margin-bottom: 1rem; color: var(--primary); }
.sensors-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }

.sensor-card { 
  background: var(--bg-card); 
  padding: 1.25rem; 
  border-radius: var(--radius); 
  box-shadow: var(--shadow); 
  border-left: 4px solid var(--primary); 
}

.sensor-card .name { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 0.5rem; }
.sensor-card .values { display: flex; justify-content: space-between; align-items: baseline; }
.sensor-card .temp { font-size: 1.8rem; font-weight: 700; color: var(--text-dark); }
.sensor-card .umid { font-size: 1rem; font-weight: 500; color: var(--text-muted); }

/* GRÁFICOS E CONTAINER FIXO */
.grid-two-col { display: grid; grid-template-columns: 1fr; gap: 1.5rem; margin-bottom: 1.5rem; }
@media (min-width: 1024px) { .grid-two-col { grid-template-columns: 1fr 1fr; } }

.chart-card { background: var(--bg-card); padding: 1.5rem; border-radius: var(--radius); box-shadow: var(--shadow); }
.chart-controls { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1rem; justify-content: space-between; align-items: center; }
.filter-btn-group { display: flex; gap: 0.25rem; }
.filter-btn-group .btn { width: auto; padding: 0.4rem 0.8rem; font-size: 0.8rem; }

/* TRAVA DE ALTURA DO CANVAS PARA IMPEDIR QUE A PÁGINA CRESÇA */
.chart-wrapper {
    position: relative;
    height: 320px;
    width: 100%;
}

/* MODAL */
.modal { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); display: flex; align-items: center; justify-content: center; z-index: 1000; padding: 1rem; }
.modal-content { background: var(--bg-card); padding: 2rem; border-radius: var(--radius); width: 100%; max-width: 500px; box-shadow: var(--shadow); }
.modal-header { display: flex; justify-content: space-between; margin-bottom: 1.5rem; font-weight: 600; font-size: 1.1rem; }